Merge branch 'master' into js-modules

48 files changed, 323 insertions, 1694 deletions

diff --git a/gfx/angle/src/libANGLE/renderer/gl/BlitGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/BlitGL.cpp
index b181822ff..0a624dcb1 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/BlitGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/BlitGL.cpp
@@ -30,7 +30,7 @@ gl::Error CheckCompileStatus(const rx::FunctionsGL *functions, GLuint shader)
         return gl::Error(GL_OUT_OF_MEMORY, "Failed to compile internal blit shader.");
     }
 
-    return gl::NoError();
+    return gl::Error(GL_NO_ERROR);
 }
 
 gl::Error CheckLinkStatus(const rx::FunctionsGL *functions, GLuint program)
@@ -43,7 +43,7 @@ gl::Error CheckLinkStatus(const rx::FunctionsGL *functions, GLuint program)
         return gl::Error(GL_OUT_OF_MEMORY, "Failed to link internal blit program.");
     }
 
-    return gl::NoError();
+    return gl::Error(GL_NO_ERROR);
 }
 
 } // anonymous namespace
@@ -58,9 +58,6 @@ BlitGL::BlitGL(const FunctionsGL *functions,
       mWorkarounds(workarounds),
       mStateManager(stateManager),
       mBlitProgram(0),
-      mSourceTextureLocation(-1),
-      mScaleLocation(-1),
-      mOffsetLocation(-1),
       mScratchFBO(0),
       mVAO(0)
 {
@@ -133,7 +130,11 @@ gl::Error BlitGL::copySubImageToLUMAWorkaroundTexture(GLuint texture,
                                                       const gl::Rectangle &sourceArea,
                                                       const gl::Framebuffer *source)
 {
-    ANGLE_TRY(initializeResources());
+    gl::Error error = initializeResources();
+    if (error.isError())
+    {
+        return error;
+    }
 
     // Blit the framebuffer to the first scratch texture
     const FramebufferGL *sourceFramebufferGL = GetImplAs<FramebufferGL>(source);
@@ -145,6 +146,7 @@ gl::Error BlitGL::copySubImageToLUMAWorkaroundTexture(GLuint texture,
     const gl::InternalFormat &internalFormatInfo =
         gl::GetInternalFormatInfo(copyTexImageFormat.internalFormat);
 
+    mStateManager->activeTexture(0);
     mStateManager->bindTexture(GL_TEXTURE_2D, mScratchTextures[0]);
     mFunctions->copyTexImage2D(GL_TEXTURE_2D, 0, copyTexImageFormat.internalFormat, sourceArea.x,
                                sourceArea.y, sourceArea.width, sourceArea.height, 0);
@@ -169,6 +171,7 @@ gl::Error BlitGL::copySubImageToLUMAWorkaroundTexture(GLuint texture,
                                      mScratchTextures[1], 0);
 
     // Render to the destination texture, sampling from the scratch texture
+    mStateManager->useProgram(mBlitProgram);
     mStateManager->setViewport(gl::Rectangle(0, 0, sourceArea.width, sourceArea.height));
     mStateManager->setScissorTestEnabled(false);
     mStateManager->setDepthRange(0.0f, 1.0f);
@@ -183,192 +186,16 @@ gl::Error BlitGL::copySubImageToLUMAWorkaroundTexture(GLuint texture,
     mStateManager->setRasterizerDiscardEnabled(false);
     mStateManager->bindTexture(GL_TEXTURE_2D, mScratchTextures[0]);
 
-    setScratchTextureParameter(GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    setScratchTextureParameter(GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    mStateManager->activeTexture(0);
-    mStateManager->bindTexture(GL_TEXTURE_2D, mScratchTextures[0]);
-
-    mStateManager->useProgram(mBlitProgram);
-    mFunctions->uniform1i(mSourceTextureLocation, 0);
-    mFunctions->uniform2f(mScaleLocation, 1.0, 1.0);
-    mFunctions->uniform2f(mOffsetLocation, 0.0, 0.0);
-
     mStateManager->bindVertexArray(mVAO, 0);
 
-    mFunctions->drawArrays(GL_TRIANGLES, 0, 3);
+    mFunctions->drawArrays(GL_TRIANGLES, 0, 6);
 
-    // Copy the swizzled texture to the destination texture
+    // Finally, copy the swizzled texture to the destination texture
     mStateManager->bindTexture(textureType, texture);
     mFunctions->copyTexSubImage2D(target, static_cast<GLint>(level), destOffset.x, destOffset.y, 0,
                                   0, sourceArea.width, sourceArea.height);
 
-    // Finally orphan the scratch textures so they can be GCed by the driver.
-    orphanScratchTextures();
-
-    return gl::NoError();
-}
-
-gl::Error BlitGL::blitColorBufferWithShader(const gl::Framebuffer *source,
-                                            const gl::Framebuffer *dest,
-                                            const gl::Rectangle &sourceAreaIn,
-                                            const gl::Rectangle &destAreaIn,
-                                            GLenum filter)
-{
-    ANGLE_TRY(initializeResources());
-
-    // Normalize the destination area to have positive width and height because we will use
-    // glViewport to set it, which doesn't allow negative width or height.
-    gl::Rectangle sourceArea = sourceAreaIn;
-    gl::Rectangle destArea   = destAreaIn;
-    if (destArea.width < 0)
-    {
-        destArea.x += destArea.width;
-        destArea.width = -destArea.width;
-        sourceArea.x += sourceArea.width;
-        sourceArea.width = -sourceArea.width;
-    }
-    if (destArea.height < 0)
-    {
-        destArea.y += destArea.height;
-        destArea.height = -destArea.height;
-        sourceArea.y += sourceArea.height;
-        sourceArea.height = -sourceArea.height;
-    }
-
-    const gl::FramebufferAttachment *readAttachment = source->getReadColorbuffer();
-    ASSERT(readAttachment->getSamples() <= 1);
-
-    // Compute the part of the source that will be sampled.
-    gl::Rectangle inBoundsSource;
-    {
-        gl::Extents sourceSize = readAttachment->getSize();
-        gl::Rectangle sourceBounds(0, 0, sourceSize.width, sourceSize.height);
-        gl::ClipRectangle(sourceArea, sourceBounds, &inBoundsSource);
-
-        // Note that inBoundsSource will have lost the orientation information.
-        ASSERT(inBoundsSource.width >= 0 && inBoundsSource.height >= 0);
-
-        // Early out when the sampled part is empty as the blit will be a noop,
-        // and it prevents a division by zero in later computations.
-        if (inBoundsSource.width == 0 || inBoundsSource.height == 0)
-        {
-            return gl::NoError();
-        }
-    }
-
-    // The blit will be emulated by getting the source of the blit in a texture and sampling it
-    // with CLAMP_TO_EDGE. The quad used to draw can trivially compute texture coordinates going
-    // from (0, 0) to (1, 1). These texture coordinates will need to be transformed to make two
-    // regions match:
-    //  - The region of the texture representing the source framebuffer region that will be sampled
-    //  - The region of the drawn quad that corresponds to non-clamped blit, this is the same as the
-    //    region of the source rectangle that is inside the source attachment.
-    //
-    //  These two regions, T (texture) and D (dest) are defined by their offset in texcoord space
-    //  in (0, 1)^2 and their size in texcoord space in (-1, 1)^2. The size can be negative to
-    //  represent the orientation of the blit.
-    //
-    //  Then if P is the quad texcoord, Q the texcoord inside T, and R the texture texcoord:
-    //    - Q = (P - D.offset) / D.size
-    //    - Q = (R - T.offset) / T.size
-    //  Hence R = (P - D.offset) / D.size * T.size - T.offset
-    //          = P * (T.size / D.size) + (T.offset - D.offset * T.size / D.size)
-
-    GLuint textureId;
-    gl::Vector2 TOffset;
-    gl::Vector2 TSize;
-
-    // TODO(cwallez) once texture dirty bits are landed, reuse attached texture instead of using
-    // CopyTexImage2D
-    {
-        textureId = mScratchTextures[0];
-        TOffset   = gl::Vector2(0.0, 0.0);
-        TSize     = gl::Vector2(1.0, 1.0);
-        if (sourceArea.width < 0)
-        {
-            TOffset.x = 1.0;
-            TSize.x   = -1.0;
-        }
-        if (sourceArea.height < 0)
-        {
-            TOffset.y = 1.0;
-            TSize.y   = -1.0;
-        }
-
-        GLenum format                 = readAttachment->getFormat().info->internalFormat;
-        const FramebufferGL *sourceGL = GetImplAs<FramebufferGL>(source);
-        mStateManager->bindFramebuffer(GL_READ_FRAMEBUFFER, sourceGL->getFramebufferID());
-        mStateManager->bindTexture(GL_TEXTURE_2D, textureId);
-
-        mFunctions->copyTexImage2D(GL_TEXTURE_2D, 0, format, inBoundsSource.x, inBoundsSource.y,
-                                   inBoundsSource.width, inBoundsSource.height, 0);
-    }
-
-    // Compute normalized sampled draw quad region
-    // It is the same as the region of the source rectangle that is in bounds.
-    gl::Vector2 DOffset;
-    gl::Vector2 DSize;
-    {
-        ASSERT(sourceArea.width != 0 && sourceArea.height != 0);
-        gl::Rectangle orientedInBounds = inBoundsSource;
-        if (sourceArea.width < 0)
-        {
-            orientedInBounds.x += orientedInBounds.width;
-            orientedInBounds.width = -orientedInBounds.width;
-        }
-        if (sourceArea.height < 0)
-        {
-            orientedInBounds.y += orientedInBounds.height;
-            orientedInBounds.height = -orientedInBounds.height;
-        }
-
-        DOffset =
-            gl::Vector2(static_cast<float>(orientedInBounds.x - sourceArea.x) / sourceArea.width,
-                        static_cast<float>(orientedInBounds.y - sourceArea.y) / sourceArea.height);
-        DSize = gl::Vector2(static_cast<float>(orientedInBounds.width) / sourceArea.width,
-                            static_cast<float>(orientedInBounds.height) / sourceArea.height);
-    }
-
-    ASSERT(DSize.x != 0.0 && DSize.y != 0.0);
-    gl::Vector2 texCoordScale  = gl::Vector2(TSize.x / DSize.x, TSize.y / DSize.y);
-    gl::Vector2 texCoordOffset = gl::Vector2(TOffset.x - DOffset.x * texCoordScale.x,
-                                             TOffset.y - DOffset.y * texCoordScale.y);
-
-    // Reset all the state except scissor and viewport
-    mStateManager->setDepthRange(0.0f, 1.0f);
-    mStateManager->setBlendEnabled(false);
-    mStateManager->setColorMask(true, true, true, true);
-    mStateManager->setSampleAlphaToCoverageEnabled(false);
-    mStateManager->setSampleCoverageEnabled(false);
-    mStateManager->setDepthTestEnabled(false);
-    mStateManager->setStencilTestEnabled(false);
-    mStateManager->setCullFaceEnabled(false);
-    mStateManager->setPolygonOffsetFillEnabled(false);
-    mStateManager->setRasterizerDiscardEnabled(false);
-
-    // Use the viewport to draw exactly to the destination rectangle
-    mStateManager->setViewport(destArea);
-
-    // Set uniforms
-    setScratchTextureParameter(GL_TEXTURE_MIN_FILTER, filter);
-    setScratchTextureParameter(GL_TEXTURE_MAG_FILTER, filter);
-    setScratchTextureParameter(GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    setScratchTextureParameter(GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    mStateManager->activeTexture(0);
-    mStateManager->bindTexture(GL_TEXTURE_2D, mScratchTextures[0]);
-
-    mStateManager->useProgram(mBlitProgram);
-    mFunctions->uniform1i(mSourceTextureLocation, 0);
-    mFunctions->uniform2f(mScaleLocation, texCoordScale.x, texCoordScale.y);
-    mFunctions->uniform2f(mOffsetLocation, texCoordOffset.x, texCoordOffset.y);
-
-    const FramebufferGL *destGL = GetImplAs<FramebufferGL>(dest);
-    mStateManager->bindFramebuffer(GL_DRAW_FRAMEBUFFER, destGL->getFramebufferID());
-
-    mStateManager->bindVertexArray(mVAO, 0);
-    mFunctions->drawArrays(GL_TRIANGLES, 0, 3);
-
-    return gl::NoError();
+    return gl::Error(GL_NO_ERROR);
 }
 
 gl::Error BlitGL::initializeResources()
@@ -378,38 +205,41 @@ gl::Error BlitGL::initializeResources()
         mBlitProgram = mFunctions->createProgram();
 
         // Compile the fragment shader
-        // It uses a single, large triangle, to avoid arithmetic precision issues where fragments
-        // with the same Y coordinate don't get exactly the same interpolated texcoord Y.
         const char *vsSource =
             "#version 150\n"
             "out vec2 v_texcoord;\n"
-            "uniform vec2 u_scale;\n"
-            "uniform vec2 u_offset;\n"
             "\n"
             "void main()\n"
             "{\n"
-            "    const vec2 quad_positions[3] = vec2[3]\n"
+            "    const vec2 quad_positions[6] = vec2[6]\n"
             "    (\n"
-            "        vec2(-0.5f, 0.0f),\n"
-            "        vec2( 1.5f, 0.0f),\n"
-            "        vec2( 0.5f, 2.0f)\n"
+            "        vec2(0.0f, 0.0f),\n"
+            "        vec2(0.0f, 1.0f),\n"
+            "        vec2(1.0f, 0.0f),\n"
+            "\n"
+            "        vec2(0.0f, 1.0f),\n"
+            "        vec2(1.0f, 0.0f),\n"
+            "        vec2(1.0f, 1.0f)\n"
             "    );\n"
             "\n"
             "    gl_Position = vec4((quad_positions[gl_VertexID] * 2.0) - 1.0, 0.0, 1.0);\n"
-            "    v_texcoord = quad_positions[gl_VertexID] * u_scale + u_offset;\n"
+            "    v_texcoord = quad_positions[gl_VertexID];\n"
             "}\n";
 
         GLuint vs = mFunctions->createShader(GL_VERTEX_SHADER);
         mFunctions->shaderSource(vs, 1, &vsSource, nullptr);
         mFunctions->compileShader(vs);
-        ANGLE_TRY(CheckCompileStatus(mFunctions, vs));
+        gl::Error error = CheckCompileStatus(mFunctions, vs);
 
         mFunctions->attachShader(mBlitProgram, vs);
         mFunctions->deleteShader(vs);
 
+        if (error.isError())
+        {
+            return error;
+        }
+
         // Compile the vertex shader
-        // It discards if the texcoord is outside (0, 1)^2 so the blitframebuffer workaround
-        // doesn't write when the point sampled is outside of the source framebuffer.
         const char *fsSource =
             "#version 150\n"
             "uniform sampler2D u_source_texture;\n"
@@ -418,28 +248,32 @@ gl::Error BlitGL::initializeResources()
             "\n"
             "void main()\n"
             "{\n"
-            "    if (clamp(v_texcoord, vec2(0.0), vec2(1.0)) != v_texcoord)\n"
-            "    {\n"
-            "        discard;\n"
-            "    }\n"
             "    output_color = texture(u_source_texture, v_texcoord);\n"
             "}\n";
 
         GLuint fs = mFunctions->createShader(GL_FRAGMENT_SHADER);
         mFunctions->shaderSource(fs, 1, &fsSource, nullptr);
         mFunctions->compileShader(fs);
-        ANGLE_TRY(CheckCompileStatus(mFunctions, fs));
+        error = CheckCompileStatus(mFunctions, fs);
 
         mFunctions->attachShader(mBlitProgram, fs);
         mFunctions->deleteShader(fs);
 
+        if (error.isError())
+        {
+            return error;
+        }
+
         mFunctions->linkProgram(mBlitProgram);
-        ANGLE_TRY(CheckLinkStatus(mFunctions, mBlitProgram));
+        error = CheckLinkStatus(mFunctions, mBlitProgram);
+        if (error.isError())
+        {
+            return error;
+        }
 
-        mSourceTextureLocation = mFunctions->getUniformLocation(mBlitProgram, "u_source_texture");
-        mScaleLocation         = mFunctions->getUniformLocation(mBlitProgram, "u_scale");
-        mOffsetLocation        = mFunctions->getUniformLocation(mBlitProgram, "u_offset");
+        GLuint textureUniform = mFunctions->getUniformLocation(mBlitProgram, "u_source_texture");
         mStateManager->useProgram(mBlitProgram);
+        mFunctions->uniform1i(textureUniform, 0);
     }
 
     for (size_t i = 0; i < ArraySize(mScratchTextures); i++)
@@ -447,6 +281,11 @@ gl::Error BlitGL::initializeResources()
         if (mScratchTextures[i] == 0)
         {
             mFunctions->genTextures(1, &mScratchTextures[i]);
+            mStateManager->bindTexture(GL_TEXTURE_2D, mScratchTextures[i]);
+
+            // Use nearest, non-mipmapped sampling with the scratch texture
+            mFunctions->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+            mFunctions->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
         }
     }
 
@@ -460,27 +299,6 @@ gl::Error BlitGL::initializeResources()
         mFunctions->genVertexArrays(1, &mVAO);
     }
 
-    return gl::NoError();
+    return gl::Error(GL_NO_ERROR);
 }
-
-void BlitGL::orphanScratchTextures()
-{
-    for (auto texture : mScratchTextures)
-    {
-        mStateManager->bindTexture(GL_TEXTURE_2D, texture);
-        mFunctions->texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, 0, GL_RGBA, GL_UNSIGNED_BYTE,
-                               nullptr);
-    }
-}
-
-void BlitGL::setScratchTextureParameter(GLenum param, GLenum value)
-{
-    for (auto texture : mScratchTextures)
-    {
-        mStateManager->bindTexture(GL_TEXTURE_2D, texture);
-        mFunctions->texParameteri(GL_TEXTURE_2D, param, value);
-        mFunctions->texParameteri(GL_TEXTURE_2D, param, value);
-    }
 }
-
-}  // namespace rx
diff --git a/gfx/angle/src/libANGLE/renderer/gl/BlitGL.h b/gfx/angle/src/libANGLE/renderer/gl/BlitGL.h
index b306ede29..3ab8319bb 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/BlitGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/BlitGL.h
@@ -52,26 +52,14 @@ class BlitGL : public angle::NonCopyable
                                                   const gl::Rectangle &sourceArea,
                                                   const gl::Framebuffer *source);
 
-    gl::Error blitColorBufferWithShader(const gl::Framebuffer *source,
-                                        const gl::Framebuffer *dest,
-                                        const gl::Rectangle &sourceArea,
-                                        const gl::Rectangle &destArea,
-                                        GLenum filter);
-
     gl::Error initializeResources();
 
   private:
-    void orphanScratchTextures();
-    void setScratchTextureParameter(GLenum param, GLenum value);
-
     const FunctionsGL *mFunctions;
     const WorkaroundsGL &mWorkarounds;
     StateManagerGL *mStateManager;
 
     GLuint mBlitProgram;
-    GLint mSourceTextureLocation;
-    GLint mScaleLocation;
-    GLint mOffsetLocation;
 
     GLuint mScratchTextures[2];
     GLuint mScratchFBO;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/BufferGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/BufferGL.cpp
index a5eda6b30..cd82733d7 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/BufferGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/BufferGL.cpp
@@ -29,10 +29,8 @@ static const GLenum SourceBufferOperationTarget = GL_COPY_READ_BUFFER;
 // supported GL versions and doesn't affect any current state when it changes.
 static const GLenum DestBufferOperationTarget = GL_ARRAY_BUFFER;
 
-BufferGL::BufferGL(const gl::BufferState &state,
-                   const FunctionsGL *functions,
-                   StateManagerGL *stateManager)
-    : BufferImpl(state),
+BufferGL::BufferGL(const FunctionsGL *functions, StateManagerGL *stateManager)
+    : BufferImpl(),
       mIsMapped(false),
       mMapOffset(0),
       mMapSize(0),
@@ -55,7 +53,7 @@ BufferGL::~BufferGL()
     mBufferID = 0;
 }
 
-gl::Error BufferGL::setData(GLenum /*target*/, const void *data, size_t size, GLenum usage)
+gl::Error BufferGL::setData(const void* data, size_t size, GLenum usage)
 {
     mStateManager->bindBuffer(DestBufferOperationTarget, mBufferID);
     mFunctions->bufferData(DestBufferOperationTarget, size, data, usage);
@@ -78,7 +76,7 @@ gl::Error BufferGL::setData(GLenum /*target*/, const void *data, size_t size, GL
     return gl::Error(GL_NO_ERROR);
 }
 
-gl::Error BufferGL::setSubData(GLenum /*target*/, const void *data, size_t size, size_t offset)
+gl::Error BufferGL::setSubData(const void* data, size_t size, size_t offset)
 {
     mStateManager->bindBuffer(DestBufferOperationTarget, mBufferID);
     mFunctions->bufferSubData(DestBufferOperationTarget, offset, size, data);
diff --git a/gfx/angle/src/libANGLE/renderer/gl/BufferGL.h b/gfx/angle/src/libANGLE/renderer/gl/BufferGL.h
index d886873fe..e787ec86e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/BufferGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/BufferGL.h
@@ -21,13 +21,11 @@ class StateManagerGL;
 class BufferGL : public BufferImpl
 {
   public:
-    BufferGL(const gl::BufferState &state,
-             const FunctionsGL *functions,
-             StateManagerGL *stateManager);
+    BufferGL(const FunctionsGL *functions, StateManagerGL *stateManager);
     ~BufferGL() override;
 
-    gl::Error setData(GLenum target, const void *data, size_t size, GLenum usage) override;
-    gl::Error setSubData(GLenum target, const void *data, size_t size, size_t offset) override;
+    gl::Error setData(const void* data, size_t size, GLenum usage) override;
+    gl::Error setSubData(const void* data, size_t size, size_t offset) override;
     gl::Error copySubData(BufferImpl* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size) override;
     gl::Error map(GLenum access, GLvoid **mapPtr) override;
     gl::Error mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr) override;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/ContextGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/ContextGL.cpp
index 8e378a4be..57dc222b9 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/ContextGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/ContextGL.cpp
@@ -62,8 +62,7 @@ ProgramImpl *ContextGL::createProgram(const gl::ProgramState &data)
 
 FramebufferImpl *ContextGL::createFramebuffer(const gl::FramebufferState &data)
 {
-    return new FramebufferGL(data, getFunctions(), getStateManager(), getWorkaroundsGL(),
-                             mRenderer->getBlitter(), false);
+    return new FramebufferGL(data, getFunctions(), getStateManager(), getWorkaroundsGL(), false);
 }
 
 TextureImpl *ContextGL::createTexture(const gl::TextureState &state)
@@ -78,9 +77,9 @@ RenderbufferImpl *ContextGL::createRenderbuffer()
                               getNativeTextureCaps());
 }
 
-BufferImpl *ContextGL::createBuffer(const gl::BufferState &state)
+BufferImpl *ContextGL::createBuffer()
 {
-    return new BufferGL(state, getFunctions(), getStateManager());
+    return new BufferGL(getFunctions(), getStateManager());
 }
 
 VertexArrayImpl *ContextGL::createVertexArray(const gl::VertexArrayState &data)
diff --git a/gfx/angle/src/libANGLE/renderer/gl/ContextGL.h b/gfx/angle/src/libANGLE/renderer/gl/ContextGL.h
index b3d5e0ee8..798a90436 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/ContextGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/ContextGL.h
@@ -47,7 +47,7 @@ class ContextGL : public ContextImpl
     RenderbufferImpl *createRenderbuffer() override;
 
     // Buffer creation
-    BufferImpl *createBuffer(const gl::BufferState &state) override;
+    BufferImpl *createBuffer() override;
 
     // Vertex Array creation
     VertexArrayImpl *createVertexArray(const gl::VertexArrayState &data) override;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.cpp
index 30c5c7b4e..e57513326 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.cpp
@@ -22,7 +22,8 @@
 namespace rx
 {
 
-DisplayGL::DisplayGL() : mRenderer(nullptr), mCurrentDrawSurface(nullptr)
+DisplayGL::DisplayGL()
+    : mRenderer(nullptr)
 {
 }
 
@@ -72,13 +73,6 @@ StreamProducerImpl *DisplayGL::createStreamProducerD3DTextureNV12(
 
 egl::Error DisplayGL::makeCurrent(egl::Surface *drawSurface, egl::Surface *readSurface, gl::Context *context)
 {
-    // Notify the previous surface (if it still exists) that it is no longer current
-    if (mCurrentDrawSurface && mSurfaceSet.find(mCurrentDrawSurface) != mSurfaceSet.end())
-    {
-        ANGLE_TRY(GetImplAs<SurfaceGL>(mCurrentDrawSurface)->unMakeCurrent());
-    }
-    mCurrentDrawSurface = nullptr;
-
     if (!drawSurface)
     {
         return egl::Error(EGL_SUCCESS);
@@ -89,10 +83,7 @@ egl::Error DisplayGL::makeCurrent(egl::Surface *drawSurface, egl::Surface *readS
     glContext->getStateManager()->pauseTransformFeedback(context->getContextState());
 
     SurfaceGL *glDrawSurface = GetImplAs<SurfaceGL>(drawSurface);
-    ANGLE_TRY(glDrawSurface->makeCurrent());
-    mCurrentDrawSurface = drawSurface;
-
-    return egl::Error(EGL_SUCCESS);
+    return glDrawSurface->makeCurrent();
 }
 
 gl::Version DisplayGL::getMaxSupportedESVersion() const
diff --git a/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.h b/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.h
index a63da6bbc..9f6515886 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/DisplayGL.h
@@ -12,11 +12,6 @@
 #include "libANGLE/renderer/DisplayImpl.h"
 #include "libANGLE/renderer/gl/FunctionsGL.h"
 
-namespace egl
-{
-class Surface;
-}
-
 namespace rx
 {
 
@@ -53,8 +48,6 @@ class DisplayGL : public DisplayImpl
     virtual const FunctionsGL *getFunctionsGL() const = 0;
 
     RendererGL *mRenderer;
-
-    egl::Surface *mCurrentDrawSurface;
 };
 
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.cpp
index 0a058f8ba..4606114ca 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.cpp
@@ -16,18 +16,14 @@
 #include "libANGLE/angletypes.h"
 #include "libANGLE/formatutils.h"
 #include "libANGLE/renderer/ContextImpl.h"
-#include "libANGLE/renderer/gl/BlitGL.h"
 #include "libANGLE/renderer/gl/FunctionsGL.h"
 #include "libANGLE/renderer/gl/RenderbufferGL.h"
 #include "libANGLE/renderer/gl/StateManagerGL.h"
 #include "libANGLE/renderer/gl/TextureGL.h"
 #include "libANGLE/renderer/gl/WorkaroundsGL.h"
-#include "libANGLE/renderer/gl/formatutilsgl.h"
-#include "libANGLE/renderer/gl/renderergl_utils.h"
 #include "platform/Platform.h"
 
 using namespace gl;
-using angle::CheckedNumeric;
 
 namespace rx
 {
@@ -36,13 +32,11 @@ FramebufferGL::FramebufferGL(const FramebufferState &state,
                              const FunctionsGL *functions,
                              StateManagerGL *stateManager,
                              const WorkaroundsGL &workarounds,
-                             BlitGL *blitter,
                              bool isDefault)
     : FramebufferImpl(state),
       mFunctions(functions),
       mStateManager(stateManager),
       mWorkarounds(workarounds),
-      mBlitter(blitter),
       mFramebufferID(0),
       mIsDefault(isDefault)
 {
@@ -56,13 +50,11 @@ FramebufferGL::FramebufferGL(GLuint id,
                              const FramebufferState &state,
                              const FunctionsGL *functions,
                              const WorkaroundsGL &workarounds,
-                             BlitGL *blitter,
                              StateManagerGL *stateManager)
     : FramebufferImpl(state),
       mFunctions(functions),
       mStateManager(stateManager),
       mWorkarounds(workarounds),
-      mBlitter(blitter),
       mFramebufferID(id),
       mIsDefault(true)
 {
@@ -220,14 +212,14 @@ GLenum FramebufferGL::getImplementationColorReadFormat() const
 {
     const auto *readAttachment = mState.getReadAttachment();
     const Format &format       = readAttachment->getFormat();
-    return format.info->getReadPixelsFormat();
+    return format.info->format;
 }
 
 GLenum FramebufferGL::getImplementationColorReadType() const
 {
     const auto *readAttachment = mState.getReadAttachment();
     const Format &format       = readAttachment->getFormat();
-    return format.info->getReadPixelsType();
+    return format.info->type;
 }
 
 Error FramebufferGL::readPixels(ContextImpl *context,
@@ -241,37 +233,10 @@ Error FramebufferGL::readPixels(ContextImpl *context,
     const PixelPackState &packState = context->getGLState().getPackState();
     mStateManager->setPixelPackState(packState);
 
-    nativegl::ReadPixelsFormat readPixelsFormat =
-        nativegl::GetReadPixelsFormat(mFunctions, mWorkarounds, format, type);
-    GLenum readFormat = readPixelsFormat.format;
-    GLenum readType   = readPixelsFormat.type;
-
     mStateManager->bindFramebuffer(GL_READ_FRAMEBUFFER, mFramebufferID);
+    mFunctions->readPixels(area.x, area.y, area.width, area.height, format, type, pixels);
 
-    if (mWorkarounds.packOverlappingRowsSeparatelyPackBuffer && packState.pixelBuffer.get() &&
-        packState.rowLength != 0 && packState.rowLength < area.width)
-    {
-        return readPixelsRowByRowWorkaround(area, readFormat, readType, packState, pixels);
-    }
-
-    if (mWorkarounds.packLastRowSeparatelyForPaddingInclusion)
-    {
-        gl::Extents size(area.width, area.height, 1);
-
-        bool apply;
-        ANGLE_TRY_RESULT(ShouldApplyLastRowPaddingWorkaround(size, packState, readFormat, readType,
-                                                             false, pixels),
-                         apply);
-
-        if (apply)
-        {
-            return readPixelsPaddingWorkaround(area, readFormat, readType, packState, pixels);
-        }
-    }
-
-    mFunctions->readPixels(area.x, area.y, area.width, area.height, readFormat, readType, pixels);
-
-    return gl::NoError();
+    return Error(GL_NO_ERROR);
 }
 
 Error FramebufferGL::blit(ContextImpl *context,
@@ -281,80 +246,15 @@ Error FramebufferGL::blit(ContextImpl *context,
                           GLenum filter)
 {
     const Framebuffer *sourceFramebuffer     = context->getGLState().getReadFramebuffer();
-    const Framebuffer *destFramebuffer       = context->getGLState().getDrawFramebuffer();
-
-    const FramebufferAttachment *colorReadAttachment = sourceFramebuffer->getReadColorbuffer();
-    GLsizei readAttachmentSamples                    = colorReadAttachment->getSamples();
-
-    bool needManualColorBlit = false;
-
-    // TODO(cwallez) when the filter is LINEAR and both source and destination are SRGB, we
-    // could avoid doing a manual blit.
-
-    // Prior to OpenGL 4.4 BlitFramebuffer (section 18.3.1 of GL 4.3 core profile) reads:
-    //      When values are taken from the read buffer, no linearization is performed, even
-    //      if the format of the buffer is SRGB.
-    // Starting from OpenGL 4.4 (section 18.3.1) it reads:
-    //      When values are taken from the read buffer, if FRAMEBUFFER_SRGB is enabled and the
-    //      value of FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING for the framebuffer attachment
-    //      corresponding to the read buffer is SRGB, the red, green, and blue components are
-    //      converted from the non-linear sRGB color space according [...].
-    {
-        bool sourceSRGB = colorReadAttachment != nullptr &&
-                          colorReadAttachment->getColorEncoding() == GL_SRGB;
-        needManualColorBlit =
-            needManualColorBlit || (sourceSRGB && mFunctions->isAtMostGL(gl::Version(4, 3)));
-    }
-
-    // Prior to OpenGL 4.2 BlitFramebuffer (section 4.3.2 of GL 4.1 core profile) reads:
-    //      Blit operations bypass the fragment pipeline. The only fragment operations which
-    //      affect a blit are the pixel ownership test and scissor test.
-    // Starting from OpenGL 4.2 (section 4.3.2) it reads:
-    //      When values are written to the draw buffers, blit operations bypass the fragment
-    //      pipeline. The only fragment operations which affect a blit are the pixel ownership
-    //      test,  the scissor test and sRGB conversion.
-    if (!needManualColorBlit)
-    {
-        bool destSRGB = false;
-        for (size_t i = 0; i < destFramebuffer->getDrawbufferStateCount(); ++i)
-        {
-            const FramebufferAttachment *attachment = destFramebuffer->getDrawBuffer(i);
-            if (attachment && attachment->getColorEncoding() == GL_SRGB)
-            {
-                destSRGB = true;
-                break;
-            }
-        }
-
-        needManualColorBlit =
-            needManualColorBlit || (destSRGB && mFunctions->isAtMostGL(gl::Version(4, 1)));
-    }
-
-    // Enable FRAMEBUFFER_SRGB if needed
-    mStateManager->setFramebufferSRGBEnabledForFramebuffer(true, this);
-
-    GLenum blitMask = mask;
-    if (needManualColorBlit && (mask & GL_COLOR_BUFFER_BIT) && readAttachmentSamples <= 1)
-    {
-        ANGLE_TRY(mBlitter->blitColorBufferWithShader(sourceFramebuffer, destFramebuffer,
-                                                      sourceArea, destArea, filter));
-        blitMask &= ~GL_COLOR_BUFFER_BIT;
-    }
-
-    if (blitMask == 0)
-    {
-        return gl::NoError();
-    }
-
     const FramebufferGL *sourceFramebufferGL = GetImplAs<FramebufferGL>(sourceFramebuffer);
+
     mStateManager->bindFramebuffer(GL_READ_FRAMEBUFFER, sourceFramebufferGL->getFramebufferID());
     mStateManager->bindFramebuffer(GL_DRAW_FRAMEBUFFER, mFramebufferID);
 
     mFunctions->blitFramebuffer(sourceArea.x, sourceArea.y, sourceArea.x1(), sourceArea.y1(),
-                                destArea.x, destArea.y, destArea.x1(), destArea.y1(), blitMask,
-                                filter);
+                                destArea.x, destArea.y, destArea.x1(), destArea.y1(), mask, filter);
 
-    return gl::NoError();
+    return Error(GL_NO_ERROR);
 }
 
 bool FramebufferGL::checkStatus() const
@@ -420,9 +320,17 @@ GLuint FramebufferGL::getFramebufferID() const
     return mFramebufferID;
 }
 
-bool FramebufferGL::isDefault() const
+void FramebufferGL::syncDrawState() const
 {
-    return mIsDefault;
+    if (mFunctions->standard == STANDARD_GL_DESKTOP)
+    {
+        // Enable SRGB blending for all framebuffers except the default framebuffer on Desktop
+        // OpenGL.
+        // When SRGB blending is enabled, only SRGB capable formats will use it but the default
+        // framebuffer will always use it if it is enabled.
+        // TODO(geofflang): Update this when the framebuffer binding dirty changes, when it exists.
+        mStateManager->setFramebufferSRGBEnabled(!mIsDefault);
+    }
 }
 
 void FramebufferGL::syncClearState(GLbitfield mask)
@@ -432,17 +340,17 @@ void FramebufferGL::syncClearState(GLbitfield mask)
         if (mWorkarounds.doesSRGBClearsOnLinearFramebufferAttachments &&
             (mask & GL_COLOR_BUFFER_BIT) != 0 && !mIsDefault)
         {
-            bool hasSRGBAttachment = false;
+            bool hasSRBAttachment = false;
             for (const auto &attachment : mState.getColorAttachments())
             {
                 if (attachment.isAttached() && attachment.getColorEncoding() == GL_SRGB)
                 {
-                    hasSRGBAttachment = true;
+                    hasSRBAttachment = true;
                     break;
                 }
             }
 
-            mStateManager->setFramebufferSRGBEnabled(hasSRGBAttachment);
+            mStateManager->setFramebufferSRGBEnabled(hasSRBAttachment);
         }
         else
         {
@@ -483,71 +391,4 @@ void FramebufferGL::syncClearBufferState(GLenum buffer, GLint drawBuffer)
         }
     }
 }
-gl::Error FramebufferGL::readPixelsRowByRowWorkaround(const gl::Rectangle &area,
-                                                      GLenum format,
-                                                      GLenum type,
-                                                      const gl::PixelPackState &pack,
-                                                      GLvoid *pixels) const
-{
-    intptr_t offset = reinterpret_cast<intptr_t>(pixels);
-
-    const gl::InternalFormat &glFormat =
-        gl::GetInternalFormatInfo(gl::GetSizedInternalFormat(format, type));
-    GLuint rowBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeRowPitch(area.width, pack.alignment, pack.rowLength),
-                     rowBytes);
-    GLuint skipBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeSkipBytes(rowBytes, 0, pack, false), skipBytes);
-
-    gl::PixelPackState directPack;
-    directPack.pixelBuffer = pack.pixelBuffer;
-    directPack.alignment   = 1;
-    mStateManager->setPixelPackState(directPack);
-    directPack.pixelBuffer.set(nullptr);
-
-    offset += skipBytes;
-    for (GLint row = 0; row < area.height; ++row)
-    {
-        mFunctions->readPixels(area.x, row + area.y, area.width, 1, format, type,
-                               reinterpret_cast<GLvoid *>(offset));
-        offset += row * rowBytes;
-    }
-
-    return gl::NoError();
-}
-
-gl::Error FramebufferGL::readPixelsPaddingWorkaround(const gl::Rectangle &area,
-                                                     GLenum format,
-                                                     GLenum type,
-                                                     const gl::PixelPackState &pack,
-                                                     GLvoid *pixels) const
-{
-    const gl::InternalFormat &glFormat =
-        gl::GetInternalFormatInfo(gl::GetSizedInternalFormat(format, type));
-    GLuint rowBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeRowPitch(area.width, pack.alignment, pack.rowLength),
-                     rowBytes);
-    GLuint skipBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeSkipBytes(rowBytes, 0, pack, false), skipBytes);
-
-    // Get all by the last row
-    if (area.height > 1)
-    {
-        mFunctions->readPixels(area.x, area.y, area.width, area.height - 1, format, type, pixels);
-    }
-
-    // Get the last row manually
-    gl::PixelPackState directPack;
-    directPack.pixelBuffer = pack.pixelBuffer;
-    directPack.alignment   = 1;
-    mStateManager->setPixelPackState(directPack);
-    directPack.pixelBuffer.set(nullptr);
-
-    intptr_t lastRowOffset =
-        reinterpret_cast<intptr_t>(pixels) + skipBytes + (area.height - 1) * rowBytes;
-    mFunctions->readPixels(area.x, area.y + area.height - 1, area.width, 1, format, type,
-                           reinterpret_cast<GLvoid *>(lastRowOffset));
-
-    return gl::NoError();
-}
 }  // namespace rx
diff --git a/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.h b/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.h
index a8bcb894c..69d4aef35 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/FramebufferGL.h
@@ -14,7 +14,6 @@
 namespace rx
 {
 
-class BlitGL;
 class FunctionsGL;
 class StateManagerGL;
 struct WorkaroundsGL;
@@ -26,7 +25,6 @@ class FramebufferGL : public FramebufferImpl
                   const FunctionsGL *functions,
                   StateManagerGL *stateManager,
                   const WorkaroundsGL &workarounds,
-                  BlitGL *blitter,
                   bool isDefault);
     // Constructor called when we need to create a FramebufferGL from an
     // existing framebuffer name, for example for the default framebuffer
@@ -35,7 +33,6 @@ class FramebufferGL : public FramebufferImpl
                   const gl::FramebufferState &data,
                   const FunctionsGL *functions,
                   const WorkaroundsGL &workarounds,
-                  BlitGL *blitter,
                   StateManagerGL *stateManager);
     ~FramebufferGL() override;
 
@@ -80,29 +77,17 @@ class FramebufferGL : public FramebufferImpl
 
     void syncState(const gl::Framebuffer::DirtyBits &dirtyBits) override;
 
+    void syncDrawState() const;
+
     GLuint getFramebufferID() const;
-    bool isDefault() const;
 
   private:
     void syncClearState(GLbitfield mask);
     void syncClearBufferState(GLenum buffer, GLint drawBuffer);
 
-    gl::Error readPixelsRowByRowWorkaround(const gl::Rectangle &area,
-                                           GLenum format,
-                                           GLenum type,
-                                           const gl::PixelPackState &pack,
-                                           GLvoid *pixels) const;
-
-    gl::Error readPixelsPaddingWorkaround(const gl::Rectangle &area,
-                                          GLenum format,
-                                          GLenum type,
-                                          const gl::PixelPackState &pack,
-                                          GLvoid *pixels) const;
-
     const FunctionsGL *mFunctions;
     StateManagerGL *mStateManager;
     const WorkaroundsGL &mWorkarounds;
-    BlitGL *mBlitter;
 
     GLuint mFramebufferID;
     bool mIsDefault;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.cpp
index fcbf211bc..9c3964e47 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.cpp
@@ -2283,21 +2283,11 @@ bool FunctionsGL::isAtLeastGL(const gl::Version &glVersion) const
     return standard == STANDARD_GL_DESKTOP && version >= glVersion;
 }
 
-bool FunctionsGL::isAtMostGL(const gl::Version &glVersion) const
-{
-    return standard == STANDARD_GL_DESKTOP && glVersion >= version;
-}
-
 bool FunctionsGL::isAtLeastGLES(const gl::Version &glesVersion) const
 {
     return standard == STANDARD_GL_ES && version >= glesVersion;
 }
 
-bool FunctionsGL::isAtMostGLES(const gl::Version &glesVersion) const
-{
-    return standard == STANDARD_GL_ES && glesVersion >= version;
-}
-
 bool FunctionsGL::hasExtension(const std::string &ext) const
 {
     return std::find(extensions.begin(), extensions.end(), ext) != extensions.end();
diff --git a/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.h b/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.h
index fa8634e57..e790d96fe 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/FunctionsGL.h
@@ -36,9 +36,7 @@ class FunctionsGL
     StandardGL standard;
     GLint profile;
     bool isAtLeastGL(const gl::Version &glVersion) const;
-    bool isAtMostGL(const gl::Version &glVersion) const;
     bool isAtLeastGLES(const gl::Version &glesVersion) const;
-    bool isAtMostGLES(const gl::Version &glesVersion) const;
 
     // Extensions
     std::vector<std::string> extensions;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/ProgramGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/ProgramGL.cpp
index 88c7df720..2c2c4e7ad 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/ProgramGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/ProgramGL.cpp
@@ -62,12 +62,12 @@ LinkResult ProgramGL::load(gl::InfoLog &infoLog, gl::BinaryInputStream *stream)
     // Verify that the program linked
     if (!checkLinkStatus(infoLog))
     {
-        return false;
+        return LinkResult(false, gl::Error(GL_NO_ERROR));
     }
 
     postLink();
 
-    return true;
+    return LinkResult(true, gl::Error(GL_NO_ERROR));
 }
 
 gl::Error ProgramGL::save(gl::BinaryOutputStream *stream)
@@ -167,7 +167,7 @@ LinkResult ProgramGL::link(const gl::ContextState &data, gl::InfoLog &infoLog)
     // Verify the link
     if (!checkLinkStatus(infoLog))
     {
-        return false;
+        return LinkResult(false, gl::Error(GL_NO_ERROR));
     }
 
     if (mWorkarounds.alwaysCallUseProgramAfterLink)
@@ -177,7 +177,7 @@ LinkResult ProgramGL::link(const gl::ContextState &data, gl::InfoLog &infoLog)
 
     postLink();
 
-    return true;
+    return LinkResult(true, gl::Error(GL_NO_ERROR));
 }
 
 GLboolean ProgramGL::validate(const gl::Caps & /*caps*/, gl::InfoLog * /*infoLog*/)
@@ -223,7 +223,7 @@ void ProgramGL::setUniform1iv(GLint location, GLsizei count, const GLint *v)
         std::vector<GLuint> &boundTextureUnits = mSamplerBindings[samplerIndex].boundTextureUnits;
 
         size_t copyCount =
-            std::min<size_t>(count, boundTextureUnits.size() - locationEntry.element);
+            std::max<size_t>(count, boundTextureUnits.size() - locationEntry.element);
         std::copy(v, v + copyCount, boundTextureUnits.begin() + locationEntry.element);
     }
 }
@@ -577,7 +577,7 @@ void ProgramGL::postLink()
             for (GLint arrayIndex = 1; arrayIndex < arraySize; ++arrayIndex)
             {
                 PathRenderingFragmentInput arrayElementInput;
-                arrayElementInput.name     = name + "[" + ToString(arrayIndex) + "]";
+                arrayElementInput.name     = name + "[" + std::to_string(arrayIndex) + "]";
                 arrayElementInput.location = baseLocation + arrayIndex;
                 mPathRenderingFragmentInputs.push_back(std::move(arrayElementInput));
             }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/RenderbufferGL.h b/gfx/angle/src/libANGLE/renderer/gl/RenderbufferGL.h
index 0ff0faeae..eeb164378 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/RenderbufferGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/RenderbufferGL.h
@@ -38,6 +38,12 @@ class RenderbufferGL : public RenderbufferImpl
 
     GLuint getRenderbufferID() const;
 
+    gl::Error getAttachmentRenderTarget(const gl::FramebufferAttachment::Target &target,
+                                        FramebufferAttachmentRenderTarget **rtOut) override
+    {
+        return gl::Error(GL_OUT_OF_MEMORY, "Not supported on OpenGL");
+    }
+
   private:
     const FunctionsGL *mFunctions;
     const WorkaroundsGL &mWorkarounds;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/RendererGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/RendererGL.cpp
index da1a65687..10c408d93 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/RendererGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/RendererGL.cpp
@@ -122,7 +122,6 @@ RendererGL::RendererGL(const FunctionsGL *functions, const egl::AttributeMap &at
 #ifndef NDEBUG
     if (mHasDebugOutput)
     {
-        mFunctions->enable(GL_DEBUG_OUTPUT);
         mFunctions->enable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
         mFunctions->debugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_HIGH, 0, nullptr, GL_TRUE);
         mFunctions->debugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_MEDIUM, 0, nullptr, GL_TRUE);
@@ -138,17 +137,6 @@ RendererGL::RendererGL(const FunctionsGL *functions, const egl::AttributeMap &at
     {
         mSkipDrawCalls = true;
     }
-
-    if (mWorkarounds.initializeCurrentVertexAttributes)
-    {
-        GLint maxVertexAttribs = 0;
-        mFunctions->getIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
-
-        for (GLint i = 0; i < maxVertexAttribs; ++i)
-        {
-            mFunctions->vertexAttrib4f(i, 0.0f, 0.0f, 0.0f, 1.0f);
-        }
-    }
 }
 
 RendererGL::~RendererGL()
diff --git a/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp
index 2a6d81583..bffc89ec9 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp
@@ -62,7 +62,6 @@ void SamplerGL::syncState(const gl::SamplerState &samplerState) const
     SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAX_LOD, &gl::SamplerState::maxLod);
     SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_MODE, &gl::SamplerState::compareMode);
     SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_FUNC, &gl::SamplerState::compareFunc);
-    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_SRGB_DECODE_EXT, &gl::SamplerState::sRGBDecode);
     // clang-format on
 }
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.cpp
index c9145b00a..400917b35 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.cpp
@@ -36,8 +36,8 @@ ShaderGL::~ShaderGL()
     }
 }
 
-ShCompileOptions ShaderGL::prepareSourceAndReturnOptions(std::stringstream *sourceStream,
-                                                         std::string * /*sourcePath*/)
+int ShaderGL::prepareSourceAndReturnOptions(std::stringstream *sourceStream,
+                                            std::string * /*sourcePath*/)
 {
     // Reset the previous state
     if (mShaderID != 0)
@@ -48,43 +48,13 @@ ShCompileOptions ShaderGL::prepareSourceAndReturnOptions(std::stringstream *sour
 
     *sourceStream << mData.getSource();
 
-    ShCompileOptions options = SH_INIT_GL_POSITION;
+    int options = SH_INIT_GL_POSITION;
 
     if (mWorkarounds.doWhileGLSLCausesGPUHang)
     {
         options |= SH_REWRITE_DO_WHILE_LOOPS;
     }
 
-    if (mWorkarounds.emulateAbsIntFunction)
-    {
-        options |= SH_EMULATE_ABS_INT_FUNCTION;
-    }
-
-    if (mWorkarounds.addAndTrueToLoopCondition)
-    {
-        options |= SH_ADD_AND_TRUE_TO_LOOP_CONDITION;
-    }
-
-    if (mWorkarounds.emulateIsnanFloat)
-    {
-        options |= SH_EMULATE_ISNAN_FLOAT_FUNCTION;
-    }
-
-    if (mWorkarounds.useUnusedBlocksWithStandardOrSharedLayout)
-    {
-        options |= SH_USE_UNUSED_STANDARD_SHARED_BLOCKS;
-    }
-
-    if (mWorkarounds.dontRemoveInvariantForFragmentInput)
-    {
-        options |= SH_DONT_REMOVE_INVARIANT_FOR_FRAGMENT_INPUT;
-    }
-
-    if (mWorkarounds.removeInvariantAndCentroidForESSL3)
-    {
-        options |= SH_REMOVE_INVARIANT_AND_CENTROID_FOR_ESSL3;
-    }
-
     return options;
 }
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.h b/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.h
index 0ecd89ce6..f35d2f711 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/ShaderGL.h
@@ -25,8 +25,8 @@ class ShaderGL : public ShaderImpl
     ~ShaderGL() override;
 
     // ShaderImpl implementation
-    ShCompileOptions prepareSourceAndReturnOptions(std::stringstream *sourceStream,
-                                                   std::string *sourcePath) override;
+    int prepareSourceAndReturnOptions(std::stringstream *sourceStream,
+                                      std::string *sourcePath) override;
     bool postTranslateCompile(gl::Compiler *compiler, std::string *infoLog) override;
     std::string getDebugInfo() const override;
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.cpp
index 3a227906f..1cf08b242 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.cpp
@@ -119,7 +119,6 @@ StateManagerGL::StateManagerGL(const FunctionsGL *functions, const gl::Caps &ren
       mClearDepth(1.0f),
       mClearStencil(0),
       mFramebufferSRGBEnabled(false),
-      mDitherEnabled(true),
       mTextureCubemapSeamlessEnabled(false),
       mMultisamplingEnabled(true),
       mSampleAlphaToOneEnabled(false),
@@ -743,21 +742,18 @@ gl::Error StateManagerGL::setGenericDrawState(const gl::ContextState &data)
         GLenum textureType = samplerUniform.textureType;
         for (GLuint textureUnitIndex : samplerUniform.boundTextureUnits)
         {
-            gl::Texture *texture = state.getSamplerTexture(textureUnitIndex, textureType);
+            const gl::Texture *texture = state.getSamplerTexture(textureUnitIndex, textureType);
             if (texture != nullptr)
             {
                 const TextureGL *textureGL = GetImplAs<TextureGL>(texture);
 
-                if (mTextures[textureType][textureUnitIndex] != textureGL->getTextureID() ||
-                    texture->hasAnyDirtyBit() || textureGL->hasAnyDirtyBit())
+                if (mTextures[textureType][textureUnitIndex] != textureGL->getTextureID())
                 {
                     activeTexture(textureUnitIndex);
                     bindTexture(textureType, textureGL->getTextureID());
-
-                    // TODO: Call this from the gl:: layer once other backends use dirty bits for
-                    // texture state.
-                    texture->syncImplState();
                 }
+
+                textureGL->syncState(textureUnitIndex);
             }
             else
             {
@@ -785,6 +781,7 @@ gl::Error StateManagerGL::setGenericDrawState(const gl::ContextState &data)
     const gl::Framebuffer *framebuffer = state.getDrawFramebuffer();
     const FramebufferGL *framebufferGL = GetImplAs<FramebufferGL>(framebuffer);
     bindFramebuffer(GL_DRAW_FRAMEBUFFER, framebufferGL->getFramebufferID());
+    framebufferGL->syncDrawState();
 
     // Seamless cubemaps are required for ES3 and higher contexts.
     setTextureCubemapSeamlessEnabled(data.getClientMajorVersion() >= 3);
@@ -1319,13 +1316,6 @@ void StateManagerGL::setClearStencil(GLint clearStencil)
 
 void StateManagerGL::syncState(const gl::State &state, const gl::State::DirtyBits &glDirtyBits)
 {
-    // The the current framebuffer binding sometimes requires resetting the srgb blending
-    if (glDirtyBits[gl::State::DIRTY_BIT_DRAW_FRAMEBUFFER_BINDING] &&
-        mFunctions->standard == STANDARD_GL_DESKTOP)
-    {
-        mLocalDirtyBits.set(gl::State::DIRTY_BIT_FRAMEBUFFER_SRGB);
-    }
-
     const auto &glAndLocalDirtyBits = (glDirtyBits | mLocalDirtyBits);
 
     if (!glAndLocalDirtyBits.any())
@@ -1523,7 +1513,7 @@ void StateManagerGL::syncState(const gl::State &state, const gl::State::DirtyBit
                 setPixelPackState(state.getPackState());
                 break;
             case gl::State::DIRTY_BIT_DITHER_ENABLED:
-                setDitherEnabled(state.isDitherEnabled());
+                // TODO(jmadill): implement this
                 break;
             case gl::State::DIRTY_BIT_GENERATE_MIPMAP_HINT:
                 // TODO(jmadill): implement this
@@ -1566,11 +1556,6 @@ void StateManagerGL::syncState(const gl::State &state, const gl::State::DirtyBit
                 setPathRenderingStencilState(state.getPathStencilFunc(), state.getPathStencilRef(),
                                              state.getPathStencilMask());
                 break;
-            case gl::State::DIRTY_BIT_FRAMEBUFFER_SRGB:
-                setFramebufferSRGBEnabledForFramebuffer(
-                    state.getFramebufferSRGB(),
-                    GetImplAs<FramebufferGL>(state.getDrawFramebuffer()));
-                break;
             default:
             {
                 ASSERT(dirtyBit >= gl::State::DIRTY_BIT_CURRENT_VALUE_0 &&
@@ -1600,41 +1585,6 @@ void StateManagerGL::setFramebufferSRGBEnabled(bool enabled)
         {
             mFunctions->disable(GL_FRAMEBUFFER_SRGB);
         }
-        mLocalDirtyBits.set(gl::State::DIRTY_BIT_FRAMEBUFFER_SRGB);
-    }
-}
-
-void StateManagerGL::setFramebufferSRGBEnabledForFramebuffer(bool enabled,
-                                                             const FramebufferGL *framebuffer)
-{
-    if (mFunctions->standard == STANDARD_GL_DESKTOP && framebuffer->isDefault())
-    {
-        // Obey the framebuffer sRGB state for blending on all framebuffers except the default
-        // framebuffer on Desktop OpenGL.
-        // When SRGB blending is enabled, only SRGB capable formats will use it but the default
-        // framebuffer will always use it if it is enabled.
-        // TODO(geofflang): Update this when the framebuffer binding dirty changes, when it exists.
-        setFramebufferSRGBEnabled(false);
-    }
-    else
-    {
-        setFramebufferSRGBEnabled(enabled);
-    }
-}
-
-void StateManagerGL::setDitherEnabled(bool enabled)
-{
-    if (mDitherEnabled != enabled)
-    {
-        mDitherEnabled = enabled;
-        if (mDitherEnabled)
-        {
-            mFunctions->enable(GL_DITHER);
-        }
-        else
-        {
-            mFunctions->disable(GL_DITHER);
-        }
     }
 }
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.h b/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.h
index 3c8c5389f..f7ec64772 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/StateManagerGL.h
@@ -27,7 +27,6 @@ class State;
 namespace rx
 {
 
-class FramebufferGL;
 class FunctionsGL;
 class TransformFeedbackGL;
 class QueryGL;
@@ -124,9 +123,6 @@ class StateManagerGL final : angle::NonCopyable
                            GLuint packBuffer);
 
     void setFramebufferSRGBEnabled(bool enabled);
-    void setFramebufferSRGBEnabledForFramebuffer(bool enabled, const FramebufferGL *framebuffer);
-
-    void setDitherEnabled(bool enabled);
 
     void setMultisamplingStateEnabled(bool enabled);
     void setSampleAlphaToOneStateEnabled(bool enabled);
@@ -268,7 +264,6 @@ class StateManagerGL final : angle::NonCopyable
     GLint mClearStencil;
 
     bool mFramebufferSRGBEnabled;
-    bool mDitherEnabled;
     bool mTextureCubemapSeamlessEnabled;
 
     bool mMultisamplingEnabled;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.cpp
index a1f0abba7..fcdddebe0 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.cpp
@@ -26,11 +26,6 @@ SurfaceGL::~SurfaceGL()
 FramebufferImpl *SurfaceGL::createDefaultFramebuffer(const gl::FramebufferState &data)
 {
     return new FramebufferGL(data, mRenderer->getFunctions(), mRenderer->getStateManager(),
-                             mRenderer->getWorkarounds(), mRenderer->getBlitter(), true);
-}
-
-egl::Error SurfaceGL::unMakeCurrent()
-{
-    return egl::Error(EGL_SUCCESS);
+                             mRenderer->getWorkarounds(), true);
 }
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.h b/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.h
index 681c365d2..329b562b9 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/SurfaceGL.h
@@ -22,10 +22,15 @@ class SurfaceGL : public SurfaceImpl
     SurfaceGL(const egl::SurfaceState &state, RendererGL *renderer);
     ~SurfaceGL() override;
 
+    gl::Error getAttachmentRenderTarget(const gl::FramebufferAttachment::Target &target,
+                                        FramebufferAttachmentRenderTarget **rtOut) override
+    {
+        return gl::Error(GL_OUT_OF_MEMORY, "Not supported on OpenGL");
+    }
+
     FramebufferImpl *createDefaultFramebuffer(const gl::FramebufferState &data) override;
 
     virtual egl::Error makeCurrent() = 0;
-    virtual egl::Error unMakeCurrent();
 
   private:
     RendererGL *mRenderer;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/TextureGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/TextureGL.cpp
index 589580505..8b78bdc01 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/TextureGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/TextureGL.cpp
@@ -8,7 +8,6 @@
 
 #include "libANGLE/renderer/gl/TextureGL.h"
 
-#include "common/BitSetIterator.h"
 #include "common/debug.h"
 #include "common/utilities.h"
 #include "libANGLE/State.h"
@@ -21,27 +20,21 @@
 #include "libANGLE/renderer/gl/StateManagerGL.h"
 #include "libANGLE/renderer/gl/WorkaroundsGL.h"
 #include "libANGLE/renderer/gl/formatutilsgl.h"
-#include "libANGLE/renderer/gl/renderergl_utils.h"
-
-using angle::CheckedNumeric;
 
 namespace rx
 {
 
-namespace
-{
-
-bool UseTexImage2D(GLenum textureType)
+static bool UseTexImage2D(GLenum textureType)
 {
     return textureType == GL_TEXTURE_2D || textureType == GL_TEXTURE_CUBE_MAP;
 }
 
-bool UseTexImage3D(GLenum textureType)
+static bool UseTexImage3D(GLenum textureType)
 {
     return textureType == GL_TEXTURE_2D_ARRAY || textureType == GL_TEXTURE_3D;
 }
 
-bool CompatibleTextureTarget(GLenum textureType, GLenum textureTarget)
+static bool CompatibleTextureTarget(GLenum textureType, GLenum textureTarget)
 {
     if (textureType != GL_TEXTURE_CUBE_MAP)
     {
@@ -53,13 +46,13 @@ bool CompatibleTextureTarget(GLenum textureType, GLenum textureTarget)
     }
 }
 
-bool IsLUMAFormat(GLenum format)
+static bool IsLUMAFormat(GLenum format)
 {
     return format == GL_LUMINANCE || format == GL_ALPHA || format == GL_LUMINANCE_ALPHA;
 }
 
-LUMAWorkaroundGL GetLUMAWorkaroundInfo(const gl::InternalFormat &originalFormatInfo,
-                                       GLenum destinationFormat)
+static LUMAWorkaroundGL GetLUMAWorkaroundInfo(const gl::InternalFormat &originalFormatInfo,
+                                              GLenum destinationFormat)
 {
     if (IsLUMAFormat(originalFormatInfo.format))
     {
@@ -74,35 +67,23 @@ LUMAWorkaroundGL GetLUMAWorkaroundInfo(const gl::InternalFormat &originalFormatI
     }
 }
 
-bool IsDepthStencilFormat(GLenum format)
+static bool IsDepthStencilFormat(GLenum format)
 {
     return format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL;
 }
 
-bool GetDepthStencilWorkaround(const gl::InternalFormat &originalFormatInfo)
+static bool GetDepthStencilWorkaround(const gl::InternalFormat &originalFormatInfo)
 {
     return IsDepthStencilFormat(originalFormatInfo.format);
 }
 
-LevelInfoGL GetLevelInfo(GLenum originalFormat, GLenum destinationFormat)
+static LevelInfoGL GetLevelInfo(GLenum originalFormat, GLenum destinationFormat)
 {
     const gl::InternalFormat &originalFormatInfo = gl::GetInternalFormatInfo(originalFormat);
     return LevelInfoGL(originalFormat, GetDepthStencilWorkaround(originalFormatInfo),
                        GetLUMAWorkaroundInfo(originalFormatInfo, destinationFormat));
 }
 
-gl::Texture::DirtyBits GetLevelWorkaroundDirtyBits()
-{
-    gl::Texture::DirtyBits bits;
-    bits.set(gl::Texture::DIRTY_BIT_SWIZZLE_RED);
-    bits.set(gl::Texture::DIRTY_BIT_SWIZZLE_GREEN);
-    bits.set(gl::Texture::DIRTY_BIT_SWIZZLE_BLUE);
-    bits.set(gl::Texture::DIRTY_BIT_SWIZZLE_ALPHA);
-    return bits;
-}
-
-}  // anonymous namespace
-
 LUMAWorkaroundGL::LUMAWorkaroundGL() : LUMAWorkaroundGL(false, GL_NONE)
 {
 }
@@ -153,14 +134,8 @@ TextureGL::~TextureGL()
     mTextureID = 0;
 }
 
-gl::Error TextureGL::setImage(GLenum target,
-                              size_t level,
-                              GLenum internalFormat,
-                              const gl::Extents &size,
-                              GLenum format,
-                              GLenum type,
-                              const gl::PixelUnpackState &unpack,
-                              const uint8_t *pixels)
+gl::Error TextureGL::setImage(GLenum target, size_t level, GLenum internalFormat, const gl::Extents &size, GLenum format, GLenum type,
+                              const gl::PixelUnpackState &unpack, const uint8_t *pixels)
 {
     if (mWorkarounds.unpackOverlappingRowsSeparatelyUnpackBuffer && unpack.pixelBuffer.get() &&
         unpack.rowLength != 0 && unpack.rowLength < size.width)
@@ -168,41 +143,13 @@ gl::Error TextureGL::setImage(GLenum target,
         // The rows overlap in unpack memory. Upload the texture row by row to work around
         // driver bug.
         reserveTexImageToBeFilled(target, level, internalFormat, size, format, type);
-
-        if (size.width == 0 || size.height == 0 || size.depth == 0)
-        {
-            return gl::NoError();
-        }
-
         gl::Box area(0, 0, 0, size.width, size.height, size.depth);
-        return setSubImageRowByRowWorkaround(target, level, area, format, type, unpack, pixels);
+        ANGLE_TRY(setSubImageRowByRowWorkaround(target, level, area, format, type, unpack, pixels));
     }
-
-    if (mWorkarounds.unpackLastRowSeparatelyForPaddingInclusion)
+    else
     {
-        bool apply;
-        ANGLE_TRY_RESULT(ShouldApplyLastRowPaddingWorkaround(size, unpack, format, type,
-                                                             UseTexImage3D(mState.mTarget), pixels),
-                         apply);
-
-        // The driver will think the pixel buffer doesn't have enough data, work around this bug
-        // by uploading the last row (and last level if 3D) separately.
-        if (apply)
-        {
-            reserveTexImageToBeFilled(target, level, internalFormat, size, format, type);
-
-            if (size.width == 0 || size.height == 0 || size.depth == 0)
-            {
-                return gl::NoError();
-            }
-
-            gl::Box area(0, 0, 0, size.width, size.height, size.depth);
-            return setSubImagePaddingWorkaround(target, level, area, format, type, unpack, pixels);
-        }
+        setImageHelper(target, level, internalFormat, size, format, type, pixels);
     }
-
-    setImageHelper(target, level, internalFormat, size, format, type, pixels);
-
     return gl::NoError();
 }
 
@@ -214,6 +161,7 @@ void TextureGL::setImageHelper(GLenum target,
                                GLenum type,
                                const uint8_t *pixels)
 {
+    UNUSED_ASSERTION_VARIABLE(&CompatibleTextureTarget); // Reference this function to avoid warnings.
     ASSERT(CompatibleTextureTarget(mState.mTarget, target));
 
     nativegl::TexImageFormat texImageFormat =
@@ -239,7 +187,7 @@ void TextureGL::setImageHelper(GLenum target,
         UNREACHABLE();
     }
 
-    setLevelInfo(level, 1, GetLevelInfo(internalFormat, texImageFormat.internalFormat));
+    mLevelInfo[level] = GetLevelInfo(internalFormat, texImageFormat.internalFormat);
 }
 
 void TextureGL::reserveTexImageToBeFilled(GLenum target,
@@ -264,47 +212,32 @@ gl::Error TextureGL::setSubImage(GLenum target, size_t level, const gl::Box &are
     nativegl::TexSubImageFormat texSubImageFormat =
         nativegl::GetTexSubImageFormat(mFunctions, mWorkarounds, format, type);
 
-    ASSERT(mLevelInfo[level].lumaWorkaround.enabled ==
-           GetLevelInfo(format, texSubImageFormat.format).lumaWorkaround.enabled);
-
     mStateManager->bindTexture(mState.mTarget, mTextureID);
     if (mWorkarounds.unpackOverlappingRowsSeparatelyUnpackBuffer && unpack.pixelBuffer.get() &&
         unpack.rowLength != 0 && unpack.rowLength < area.width)
     {
-        return setSubImageRowByRowWorkaround(target, level, area, format, type, unpack, pixels);
-    }
-
-    if (mWorkarounds.unpackLastRowSeparatelyForPaddingInclusion)
-    {
-        gl::Extents size(area.width, area.height, area.depth);
-
-        bool apply;
-        ANGLE_TRY_RESULT(ShouldApplyLastRowPaddingWorkaround(size, unpack, format, type,
-                                                             UseTexImage3D(mState.mTarget), pixels),
-                         apply);
-
-        // The driver will think the pixel buffer doesn't have enough data, work around this bug
-        // by uploading the last row (and last level if 3D) separately.
-        if (apply)
-        {
-            return setSubImagePaddingWorkaround(target, level, area, format, type, unpack, pixels);
-        }
+        ANGLE_TRY(setSubImageRowByRowWorkaround(target, level, area, format, type, unpack, pixels));
     }
-
-    if (UseTexImage2D(mState.mTarget))
+    else if (UseTexImage2D(mState.mTarget))
     {
         ASSERT(area.z == 0 && area.depth == 1);
         mFunctions->texSubImage2D(target, static_cast<GLint>(level), area.x, area.y, area.width,
                                   area.height, texSubImageFormat.format, texSubImageFormat.type,
                                   pixels);
     }
-    else
+    else if (UseTexImage3D(mState.mTarget))
     {
-        ASSERT(UseTexImage3D(mState.mTarget));
         mFunctions->texSubImage3D(target, static_cast<GLint>(level), area.x, area.y, area.z,
                                   area.width, area.height, area.depth, texSubImageFormat.format,
                                   texSubImageFormat.type, pixels);
     }
+    else
+    {
+        UNREACHABLE();
+    }
+
+    ASSERT(mLevelInfo[level].lumaWorkaround.enabled ==
+           GetLevelInfo(format, texSubImageFormat.format).lumaWorkaround.enabled);
 
     return gl::Error(GL_NO_ERROR);
 }
@@ -317,24 +250,26 @@ gl::Error TextureGL::setSubImageRowByRowWorkaround(GLenum target,
                                                    const gl::PixelUnpackState &unpack,
                                                    const uint8_t *pixels)
 {
-    gl::PixelUnpackState directUnpack;
-    directUnpack.pixelBuffer = unpack.pixelBuffer;
-    directUnpack.alignment   = 1;
-    mStateManager->setPixelUnpackState(directUnpack);
-    directUnpack.pixelBuffer.set(nullptr);
-
-    const gl::InternalFormat &glFormat =
-        gl::GetInternalFormatInfo(gl::GetSizedInternalFormat(format, type));
-    GLuint rowBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeRowPitch(area.width, unpack.alignment, unpack.rowLength),
-                     rowBytes);
+    gl::PixelUnpackState unpackToUse;
+    unpackToUse.pixelBuffer = unpack.pixelBuffer;
+    mStateManager->setPixelUnpackState(unpackToUse);
+    unpackToUse.pixelBuffer.set(nullptr);
+    const gl::Format &glFormat           = mState.getImageDesc(mState.mTarget, level).format;
+    GLuint rowBytes                      = 0;
+    ANGLE_TRY_RESULT(
+        glFormat.info->computeRowPitch(GL_NONE, area.width, unpack.alignment, unpack.rowLength),
+        rowBytes);
     GLuint imageBytes = 0;
-    ANGLE_TRY_RESULT(gl::InternalFormat::computeDepthPitch(area.height, unpack.imageHeight, rowBytes),
-                     imageBytes);
+    ANGLE_TRY_RESULT(
+        glFormat.info->computeDepthPitch(GL_NONE, area.width, area.height, unpack.alignment,
+                                         unpack.rowLength, unpack.imageHeight),
+        imageBytes);
     bool useTexImage3D = UseTexImage3D(mState.mTarget);
     GLuint skipBytes   = 0;
-    ANGLE_TRY_RESULT(glFormat.computeSkipBytes(rowBytes, imageBytes, unpack, useTexImage3D),
-                     skipBytes);
+    ANGLE_TRY_RESULT(
+        glFormat.info->computeSkipBytes(rowBytes, imageBytes, unpack.skipImages, unpack.skipRows,
+                                        unpack.skipPixels, useTexImage3D),
+        skipBytes);
 
     const uint8_t *pixelsWithSkip = pixels + skipBytes;
     if (useTexImage3D)
@@ -352,9 +287,8 @@ gl::Error TextureGL::setSubImageRowByRowWorkaround(GLenum target,
             }
         }
     }
-    else
+    else if (UseTexImage2D(mState.mTarget))
     {
-        ASSERT(UseTexImage2D(mState.mTarget));
         for (GLint row = 0; row < area.height; ++row)
         {
             GLint byteOffset         = row * rowBytes;
@@ -363,89 +297,10 @@ gl::Error TextureGL::setSubImageRowByRowWorkaround(GLenum target,
                                       area.width, 1, format, type, rowPixels);
         }
     }
-    return gl::NoError();
-}
-
-gl::Error TextureGL::setSubImagePaddingWorkaround(GLenum target,
-                                                  size_t level,
-                                                  const gl::Box &area,
-                                                  GLenum format,
-                                                  GLenum type,
-                                                  const gl::PixelUnpackState &unpack,
-                                                  const uint8_t *pixels)
-{
-    const gl::InternalFormat &glFormat =
-        gl::GetInternalFormatInfo(gl::GetSizedInternalFormat(format, type));
-    GLuint rowBytes = 0;
-    ANGLE_TRY_RESULT(glFormat.computeRowPitch(area.width, unpack.alignment, unpack.rowLength),
-                     rowBytes);
-    GLuint imageBytes = 0;
-    ANGLE_TRY_RESULT(gl::InternalFormat::computeDepthPitch(area.height, unpack.imageHeight, rowBytes),
-                     imageBytes);
-    bool useTexImage3D = UseTexImage3D(mState.mTarget);
-    GLuint skipBytes   = 0;
-    ANGLE_TRY_RESULT(glFormat.computeSkipBytes(rowBytes, imageBytes, unpack, useTexImage3D),
-                     skipBytes);
-
-    gl::PixelUnpackState directUnpack;
-    directUnpack.pixelBuffer = unpack.pixelBuffer;
-    directUnpack.alignment   = 1;
-
-    if (useTexImage3D)
-    {
-        // Upload all but the last slice
-        if (area.depth > 1)
-        {
-            mFunctions->texSubImage3D(target, static_cast<GLint>(level), area.x, area.y, area.z,
-                                      area.width, area.height, area.depth - 1, format, type,
-                                      pixels);
-        }
-
-        // Upload the last slice but its last row
-        if (area.height > 1)
-        {
-            // Do not include skipBytes in the last image pixel start offset as it will be done by
-            // the driver
-            GLint lastImageOffset          = (area.depth - 1) * imageBytes;
-            const GLubyte *lastImagePixels = pixels + lastImageOffset;
-            mFunctions->texSubImage3D(target, static_cast<GLint>(level), area.x, area.y,
-                                      area.z + area.depth - 1, area.width, area.height - 1, 1,
-                                      format, type, lastImagePixels);
-        }
-
-        // Upload the last row of the last slice "manually"
-        mStateManager->setPixelUnpackState(directUnpack);
-
-        GLint lastRowOffset =
-            skipBytes + (area.depth - 1) * imageBytes + (area.height - 1) * rowBytes;
-        const GLubyte *lastRowPixels = pixels + lastRowOffset;
-        mFunctions->texSubImage3D(target, static_cast<GLint>(level), area.x,
-                                  area.y + area.height - 1, area.z + area.depth - 1, area.width, 1,
-                                  1, format, type, lastRowPixels);
-    }
     else
     {
-        ASSERT(UseTexImage2D(mState.mTarget));
-
-        // Upload all but the last row
-        if (area.height > 1)
-        {
-            mFunctions->texSubImage2D(target, static_cast<GLint>(level), area.x, area.y, area.width,
-                                      area.height - 1, format, type, pixels);
-        }
-
-        // Upload the last row "manually"
-        mStateManager->setPixelUnpackState(directUnpack);
-
-        GLint lastRowOffset          = skipBytes + (area.height - 1) * rowBytes;
-        const GLubyte *lastRowPixels = pixels + lastRowOffset;
-        mFunctions->texSubImage2D(target, static_cast<GLint>(level), area.x,
-                                  area.y + area.height - 1, area.width, 1, format, type,
-                                  lastRowPixels);
+        UNREACHABLE();
     }
-
-    directUnpack.pixelBuffer.set(nullptr);
-
     return gl::NoError();
 }
 
@@ -476,7 +331,7 @@ gl::Error TextureGL::setCompressedImage(GLenum target, size_t level, GLenum inte
         UNREACHABLE();
     }
 
-    setLevelInfo(level, 1, GetLevelInfo(internalFormat, compressedTexImageFormat.internalFormat));
+    mLevelInfo[level] = GetLevelInfo(internalFormat, compressedTexImageFormat.internalFormat);
     ASSERT(!mLevelInfo[level].lumaWorkaround.enabled);
 
     return gl::Error(GL_NO_ERROR);
@@ -553,7 +408,7 @@ gl::Error TextureGL::copyImage(GLenum target, size_t level, const gl::Rectangle
         }
     }
 
-    setLevelInfo(level, 1, levelInfo);
+    mLevelInfo[level] = levelInfo;
 
     return gl::Error(GL_NO_ERROR);
 }
@@ -639,7 +494,8 @@ gl::Error TextureGL::setStorage(GLenum target, size_t levels, GLenum internalFor
                     if (internalFormatInfo.compressed)
                     {
                         GLuint dataSize = 0;
-                        ANGLE_TRY_RESULT(internalFormatInfo.computeCompressedImageSize(levelSize),
+                        ANGLE_TRY_RESULT(internalFormatInfo.computeCompressedImageSize(
+                                             GL_UNSIGNED_BYTE, levelSize),
                                          dataSize);
                         mFunctions->compressedTexImage2D(target, static_cast<GLint>(level),
                                                          texStorageFormat.internalFormat,
@@ -662,7 +518,7 @@ gl::Error TextureGL::setStorage(GLenum target, size_t levels, GLenum internalFor
                         {
                             GLuint dataSize = 0;
                             ANGLE_TRY_RESULT(internalFormatInfo.computeCompressedImageSize(
-                                                 levelSize),
+                                                 GL_UNSIGNED_BYTE, levelSize),
                                              dataSize);
                             mFunctions->compressedTexImage2D(
                                 face, static_cast<GLint>(level), texStorageFormat.internalFormat,
@@ -713,7 +569,7 @@ gl::Error TextureGL::setStorage(GLenum target, size_t levels, GLenum internalFor
                 {
                     GLuint dataSize = 0;
                     ANGLE_TRY_RESULT(
-                        internalFormatInfo.computeCompressedImageSize(levelSize),
+                        internalFormatInfo.computeCompressedImageSize(GL_UNSIGNED_BYTE, levelSize),
                         dataSize);
                     mFunctions->compressedTexImage3D(target, i, texStorageFormat.internalFormat,
                                                      levelSize.width, levelSize.height,
@@ -735,7 +591,11 @@ gl::Error TextureGL::setStorage(GLenum target, size_t levels, GLenum internalFor
         UNREACHABLE();
     }
 
-    setLevelInfo(0, levels, GetLevelInfo(internalFormat, texStorageFormat.internalFormat));
+    LevelInfoGL levelInfo = GetLevelInfo(internalFormat, texStorageFormat.internalFormat);
+    for (size_t level = 0; level < mLevelInfo.size(); level++)
+    {
+        mLevelInfo[level] = levelInfo;
+    }
 
     return gl::Error(GL_NO_ERROR);
 }
@@ -750,6 +610,8 @@ gl::Error TextureGL::setImageExternal(GLenum target,
 
 gl::Error TextureGL::generateMipmap()
 {
+    // Need to sync base level and max level to driver before calling GenerateMipmap.
+    syncState(0);
     mStateManager->bindTexture(mState.mTarget, mTextureID);
     mFunctions->generateMipmap(mState.mTarget);
 
@@ -758,7 +620,10 @@ gl::Error TextureGL::generateMipmap()
 
     ASSERT(maxLevel < mLevelInfo.size());
 
-    setLevelInfo(effectiveBaseLevel, maxLevel - effectiveBaseLevel, mLevelInfo[effectiveBaseLevel]);
+    for (GLuint level = effectiveBaseLevel; level <= maxLevel; level++)
+    {
+        mLevelInfo[level] = mLevelInfo[effectiveBaseLevel];
+    }
 
     return gl::Error(GL_NO_ERROR);
 }
@@ -770,7 +635,7 @@ void TextureGL::bindTexImage(egl::Surface *surface)
     // Make sure this texture is bound
     mStateManager->bindTexture(mState.mTarget, mTextureID);
 
-    setLevelInfo(0, 1, LevelInfoGL());
+    mLevelInfo[0] = LevelInfoGL();
 }
 
 void TextureGL::releaseTexImage()
@@ -796,121 +661,58 @@ gl::Error TextureGL::setEGLImageTarget(GLenum target, egl::Image *image)
     return gl::Error(GL_INVALID_OPERATION);
 }
 
-void TextureGL::syncState(const gl::Texture::DirtyBits &dirtyBits)
+template <typename T, typename ApplyTextureFuncType>
+static inline void SyncSamplerStateMember(const FunctionsGL *functions,
+                                          ApplyTextureFuncType applyTextureFunc,
+                                          const gl::SamplerState &newState,
+                                          gl::SamplerState &curState,
+                                          GLenum textureType,
+                                          GLenum name,
+                                          T(gl::SamplerState::*samplerMember))
 {
-    if (dirtyBits.none() && mLocalDirtyBits.none())
-    {
-        return;
-    }
-
-    mStateManager->bindTexture(mState.mTarget, mTextureID);
-
-    if (dirtyBits[gl::Texture::DIRTY_BIT_BASE_LEVEL] || dirtyBits[gl::Texture::DIRTY_BIT_MAX_LEVEL])
+    if (curState.*samplerMember != newState.*samplerMember)
     {
-        // Don't know if the previous base level was using any workarounds, always re-sync the
-        // workaround dirty bits
-        mLocalDirtyBits |= GetLevelWorkaroundDirtyBits();
+        applyTextureFunc();
+        curState.*samplerMember = newState.*samplerMember;
+        functions->texParameterf(textureType, name, static_cast<GLfloat>(curState.*samplerMember));
     }
-
-    for (auto dirtyBit : angle::IterateBitSet(dirtyBits | mLocalDirtyBits))
-    {
-        switch (dirtyBit)
-        {
-            case gl::Texture::DIRTY_BIT_MIN_FILTER:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_MIN_FILTER,
-                                          mState.getSamplerState().minFilter);
-                break;
-            case gl::Texture::DIRTY_BIT_MAG_FILTER:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_MAG_FILTER,
-                                          mState.getSamplerState().magFilter);
-                break;
-            case gl::Texture::DIRTY_BIT_WRAP_S:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_WRAP_S,
-                                          mState.getSamplerState().wrapS);
-                break;
-            case gl::Texture::DIRTY_BIT_WRAP_T:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_WRAP_T,
-                                          mState.getSamplerState().wrapT);
-                break;
-            case gl::Texture::DIRTY_BIT_WRAP_R:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_WRAP_R,
-                                          mState.getSamplerState().wrapR);
-                break;
-            case gl::Texture::DIRTY_BIT_MAX_ANISOTROPY:
-                mFunctions->texParameterf(mState.mTarget, GL_TEXTURE_MAX_ANISOTROPY_EXT,
-                                          mState.getSamplerState().maxAnisotropy);
-                break;
-            case gl::Texture::DIRTY_BIT_MIN_LOD:
-                mFunctions->texParameterf(mState.mTarget, GL_TEXTURE_MIN_LOD,
-                                          mState.getSamplerState().minLod);
-                break;
-            case gl::Texture::DIRTY_BIT_MAX_LOD:
-                mFunctions->texParameterf(mState.mTarget, GL_TEXTURE_MAX_LOD,
-                                          mState.getSamplerState().maxLod);
-                break;
-            case gl::Texture::DIRTY_BIT_COMPARE_MODE:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_COMPARE_MODE,
-                                          mState.getSamplerState().compareMode);
-                break;
-            case gl::Texture::DIRTY_BIT_COMPARE_FUNC:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_COMPARE_FUNC,
-                                          mState.getSamplerState().compareFunc);
-                break;
-            case gl::Texture::DIRTY_BIT_SRGB_DECODE:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_SRGB_DECODE_EXT,
-                                          mState.getSamplerState().sRGBDecode);
-                break;
-
-            // Texture state
-            case gl::Texture::DIRTY_BIT_SWIZZLE_RED:
-                syncTextureStateSwizzle(mFunctions, GL_TEXTURE_SWIZZLE_R,
-                                        mState.getSwizzleState().swizzleRed);
-                break;
-            case gl::Texture::DIRTY_BIT_SWIZZLE_GREEN:
-                syncTextureStateSwizzle(mFunctions, GL_TEXTURE_SWIZZLE_G,
-                                        mState.getSwizzleState().swizzleGreen);
-                break;
-            case gl::Texture::DIRTY_BIT_SWIZZLE_BLUE:
-                syncTextureStateSwizzle(mFunctions, GL_TEXTURE_SWIZZLE_B,
-                                        mState.getSwizzleState().swizzleBlue);
-                break;
-            case gl::Texture::DIRTY_BIT_SWIZZLE_ALPHA:
-                syncTextureStateSwizzle(mFunctions, GL_TEXTURE_SWIZZLE_A,
-                                        mState.getSwizzleState().swizzleAlpha);
-                break;
-            case gl::Texture::DIRTY_BIT_BASE_LEVEL:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_BASE_LEVEL,
-                                          mState.getEffectiveBaseLevel());
-                break;
-            case gl::Texture::DIRTY_BIT_MAX_LEVEL:
-                mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_MAX_LEVEL,
-                                          mState.getEffectiveMaxLevel());
-                break;
-            case gl::Texture::DIRTY_BIT_USAGE:
-                break;
-
-            default:
-                UNREACHABLE();
-        }
-    }
-
-    mLocalDirtyBits.reset();
 }
 
-bool TextureGL::hasAnyDirtyBit() const
+template <typename T, typename ApplyTextureFuncType>
+static inline void SyncTextureStateMember(const FunctionsGL *functions,
+                                          ApplyTextureFuncType applyTextureFunc,
+                                          const gl::TextureState &newState,
+                                          gl::TextureState &curState,
+                                          GLenum textureType,
+                                          GLenum name,
+                                          T(gl::TextureState::*stateMember))
 {
-    return mLocalDirtyBits.any();
+    if (curState.*stateMember != newState.*stateMember)
+    {
+        applyTextureFunc();
+        curState.*stateMember = newState.*stateMember;
+        functions->texParameterf(textureType, name, static_cast<GLfloat>(curState.*stateMember));
+    }
 }
 
-void TextureGL::syncTextureStateSwizzle(const FunctionsGL *functions, GLenum name, GLenum value)
+template <typename T, typename ApplyTextureFuncType>
+static inline void SyncTextureStateSwizzle(const FunctionsGL *functions,
+                                           ApplyTextureFuncType applyTextureFunc,
+                                           const LevelInfoGL &levelInfo,
+                                           const gl::SwizzleState &newState,
+                                           gl::SwizzleState &curState,
+                                           GLenum textureType,
+                                           GLenum name,
+                                           T(gl::SwizzleState::*stateMember))
 {
-    const LevelInfoGL &levelInfo = mLevelInfo[mState.getEffectiveBaseLevel()];
-    GLenum resultSwizzle         = value;
+    GLenum resultSwizzle = newState.*stateMember;
     if (levelInfo.lumaWorkaround.enabled || levelInfo.depthStencilWorkaround)
     {
         if (levelInfo.lumaWorkaround.enabled)
         {
-            switch (value)
+            UNUSED_ASSERTION_VARIABLE(levelInfo.lumaWorkaround.workaroundFormat);
+
+            switch (newState.*stateMember)
             {
             case GL_RED:
             case GL_GREEN:
@@ -964,7 +766,7 @@ void TextureGL::syncTextureStateSwizzle(const FunctionsGL *functions, GLenum nam
             case GL_ZERO:
             case GL_ONE:
                 // Don't modify the swizzle state when requesting ZERO or ONE.
-                resultSwizzle = value;
+                resultSwizzle = newState.*stateMember;
                 break;
 
             default:
@@ -974,11 +776,11 @@ void TextureGL::syncTextureStateSwizzle(const FunctionsGL *functions, GLenum nam
         }
         else if (levelInfo.depthStencilWorkaround)
         {
-            switch (value)
+            switch (newState.*stateMember)
             {
                 case GL_RED:
                     // Don't modify the swizzle state when requesting the red channel.
-                    resultSwizzle = value;
+                    resultSwizzle = newState.*stateMember;
                     break;
 
                 case GL_GREEN:
@@ -995,7 +797,7 @@ void TextureGL::syncTextureStateSwizzle(const FunctionsGL *functions, GLenum nam
                 case GL_ZERO:
                 case GL_ONE:
                     // Don't modify the swizzle state when requesting ZERO or ONE.
-                    resultSwizzle = value;
+                    resultSwizzle = newState.*stateMember;
                     break;
 
                 default:
@@ -1010,25 +812,65 @@ void TextureGL::syncTextureStateSwizzle(const FunctionsGL *functions, GLenum nam
 
     }
 
-    functions->texParameteri(mState.mTarget, name, resultSwizzle);
+    if (curState.*stateMember != resultSwizzle)
+    {
+        applyTextureFunc();
+        curState.*stateMember = resultSwizzle;
+        functions->texParameterf(textureType, name, static_cast<GLfloat>(resultSwizzle));
+    }
 }
 
-void TextureGL::setLevelInfo(size_t level, size_t levelCount, const LevelInfoGL &levelInfo)
+void TextureGL::syncState(size_t textureUnit) const
 {
-    ASSERT(levelCount > 0 && level + levelCount < mLevelInfo.size());
+    // Callback lamdba to bind this texture only if needed.
+    bool textureApplied   = false;
+    auto applyTextureFunc = [&]()
+    {
+        if (!textureApplied)
+        {
+            mStateManager->activeTexture(textureUnit);
+            mStateManager->bindTexture(mState.mTarget, mTextureID);
+            textureApplied = true;
+        }
+    };
 
-    GLuint baseLevel              = mState.getEffectiveBaseLevel();
-    bool needsResync              = level <= baseLevel && level + levelCount >= baseLevel &&
-                       (levelInfo.depthStencilWorkaround || levelInfo.lumaWorkaround.enabled);
-    if (needsResync)
+    // Sync texture state
+    // Apply the effective base level and max level instead of the base level and max level set from
+    // the API. This can help with buggy drivers.
+    if (mAppliedTextureState.getEffectiveBaseLevel() != mState.getEffectiveBaseLevel())
     {
-        mLocalDirtyBits |= GetLevelWorkaroundDirtyBits();
+        applyTextureFunc();
+        mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_BASE_LEVEL,
+                                  mState.getEffectiveBaseLevel());
     }
-
-    for (size_t i = level; i < level + levelCount; i++)
+    mAppliedTextureState.mBaseLevel = mState.mBaseLevel;
+    if (mAppliedTextureState.getEffectiveMaxLevel() != mState.getEffectiveMaxLevel())
     {
-        mLevelInfo[i] = levelInfo;
+        applyTextureFunc();
+        mFunctions->texParameteri(mState.mTarget, GL_TEXTURE_MAX_LEVEL,
+                                  mState.getEffectiveMaxLevel());
     }
+    mAppliedTextureState.mMaxLevel = mState.mMaxLevel;
+
+    // clang-format off
+    const LevelInfoGL &levelInfo = mLevelInfo[mState.getEffectiveBaseLevel()];
+    SyncTextureStateSwizzle(mFunctions, applyTextureFunc, levelInfo, mState.mSwizzleState, mAppliedTextureState.mSwizzleState, mState.mTarget, GL_TEXTURE_SWIZZLE_R, &gl::SwizzleState::swizzleRed);
+    SyncTextureStateSwizzle(mFunctions, applyTextureFunc, levelInfo, mState.mSwizzleState, mAppliedTextureState.mSwizzleState, mState.mTarget, GL_TEXTURE_SWIZZLE_G, &gl::SwizzleState::swizzleGreen);
+    SyncTextureStateSwizzle(mFunctions, applyTextureFunc, levelInfo, mState.mSwizzleState, mAppliedTextureState.mSwizzleState, mState.mTarget, GL_TEXTURE_SWIZZLE_B, &gl::SwizzleState::swizzleBlue);
+    SyncTextureStateSwizzle(mFunctions, applyTextureFunc, levelInfo, mState.mSwizzleState, mAppliedTextureState.mSwizzleState, mState.mTarget, GL_TEXTURE_SWIZZLE_A, &gl::SwizzleState::swizzleAlpha);
+
+    // Sync sampler state
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_MIN_FILTER, &gl::SamplerState::minFilter);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_MAG_FILTER, &gl::SamplerState::magFilter);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_WRAP_S, &gl::SamplerState::wrapS);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_WRAP_T, &gl::SamplerState::wrapT);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_WRAP_R, &gl::SamplerState::wrapR);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_MAX_ANISOTROPY_EXT, &gl::SamplerState::maxAnisotropy);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_MIN_LOD, &gl::SamplerState::minLod);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_MAX_LOD, &gl::SamplerState::maxLod);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_COMPARE_MODE, &gl::SamplerState::compareMode);
+    SyncSamplerStateMember(mFunctions, applyTextureFunc, mState.mSamplerState, mAppliedTextureState.mSamplerState, mState.mTarget, GL_TEXTURE_COMPARE_FUNC, &gl::SamplerState::compareFunc);
+    // clang-format on
 }
 
 GLuint TextureGL::getTextureID() const
diff --git a/gfx/angle/src/libANGLE/renderer/gl/TextureGL.h b/gfx/angle/src/libANGLE/renderer/gl/TextureGL.h
index 068284c5b..540e6c3c6 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/TextureGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/TextureGL.h
@@ -87,12 +87,16 @@ class TextureGL : public TextureImpl
 
     gl::Error setEGLImageTarget(GLenum target, egl::Image *image) override;
 
+    void syncState(size_t textureUnit) const;
     GLuint getTextureID() const;
 
-    void setBaseLevel(GLuint) override {}
+    gl::Error getAttachmentRenderTarget(const gl::FramebufferAttachment::Target &target,
+                                        FramebufferAttachmentRenderTarget **rtOut) override
+    {
+        return gl::Error(GL_OUT_OF_MEMORY, "Not supported on OpenGL");
+    }
 
-    void syncState(const gl::Texture::DirtyBits &dirtyBits) override;
-    bool hasAnyDirtyBit() const;
+    void setBaseLevel(GLuint) override {}
 
   private:
     void setImageHelper(GLenum target,
@@ -116,25 +120,12 @@ class TextureGL : public TextureImpl
                                             const gl::PixelUnpackState &unpack,
                                             const uint8_t *pixels);
 
-    gl::Error setSubImagePaddingWorkaround(GLenum target,
-                                           size_t level,
-                                           const gl::Box &area,
-                                           GLenum format,
-                                           GLenum type,
-                                           const gl::PixelUnpackState &unpack,
-                                           const uint8_t *pixels);
-
-    void syncTextureStateSwizzle(const FunctionsGL *functions, GLenum name, GLenum value);
-
-    void setLevelInfo(size_t level, size_t levelCount, const LevelInfoGL &levelInfo);
-
     const FunctionsGL *mFunctions;
     const WorkaroundsGL &mWorkarounds;
     StateManagerGL *mStateManager;
     BlitGL *mBlitter;
 
     std::vector<LevelInfoGL> mLevelInfo;
-    gl::Texture::DirtyBits mLocalDirtyBits;
 
     mutable gl::TextureState mAppliedTextureState;
     GLuint mTextureID;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/WorkaroundsGL.h b/gfx/angle/src/libANGLE/renderer/gl/WorkaroundsGL.h
index 105f94089..2549a2c47 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/WorkaroundsGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/WorkaroundsGL.h
@@ -21,13 +21,7 @@ struct WorkaroundsGL
           doWhileGLSLCausesGPUHang(false),
           finishDoesNotCauseQueriesToBeAvailable(false),
           alwaysCallUseProgramAfterLink(false),
-          unpackOverlappingRowsSeparatelyUnpackBuffer(false),
-          emulateAbsIntFunction(false),
-          addAndTrueToLoopCondition(false),
-          emulateIsnanFloat(false),
-          useUnusedBlocksWithStandardOrSharedLayout(false),
-          dontRemoveInvariantForFragmentInput(false),
-          removeInvariantAndCentroidForESSL3(false)
+          unpackOverlappingRowsSeparatelyUnpackBuffer(false)
     {
     }
 
@@ -73,53 +67,6 @@ struct WorkaroundsGL
 
     // In the case of unpacking from a pixel unpack buffer, unpack overlapping rows row by row.
     bool unpackOverlappingRowsSeparatelyUnpackBuffer;
-    // In the case of packing to a pixel pack buffer, pack overlapping rows row by row.
-    bool packOverlappingRowsSeparatelyPackBuffer;
-
-    // During initialization, assign the current vertex attributes to the spec-mandated defaults.
-    bool initializeCurrentVertexAttributes;
-
-    // abs(i) where i is an integer returns unexpected result on Intel Mac.
-    // Emulate abs(i) with i * sign(i).
-    bool emulateAbsIntFunction;
-
-    // On Intel Mac, calculation of loop conditions in for and while loop has bug.
-    // Add "&& true" to the end of the condition expression to work around the bug.
-    bool addAndTrueToLoopCondition;
-
-    // When uploading textures from an unpack buffer, some drivers count an extra row padding when
-    // checking if the pixel unpack buffer is big enough. Tracking bug: http://anglebug.com/1512
-    // For example considering the pixel buffer below where in memory, each row data (D) of the
-    // texture is followed by some unused data (the dots):
-    //     +-------+--+
-    //     |DDDDDDD|..|
-    //     |DDDDDDD|..|
-    //     |DDDDDDD|..|
-    //     |DDDDDDD|..|
-    //     +-------A--B
-    // The last pixel read will be A, but the driver will think it is B, causing it to generate an
-    // error when the pixel buffer is just big enough.
-    bool unpackLastRowSeparatelyForPaddingInclusion;
-
-    // Equivalent workaround when uploading data from a pixel pack buffer.
-    bool packLastRowSeparatelyForPaddingInclusion;
-
-    // On some Intel drivers, using isnan() on highp float will get wrong answer. To work around
-    // this bug, we use an expression to emulate function isnan().
-    // Tracking bug: http://crbug.com/650547
-    bool emulateIsnanFloat;
-
-    // On Mac with OpenGL version 4.1, unused std140 or shared uniform blocks will be
-    // treated as inactive which is not consistent with WebGL2.0 spec. Reference all members in a
-    // unused std140 or shared uniform block at the beginning of main to work around it.
-    bool useUnusedBlocksWithStandardOrSharedLayout;
-
-    // This flag will keep invariant declaration for input in fragment shader for GLSL >=4.20
-    // on AMD.
-    bool dontRemoveInvariantForFragmentInput;
-
-    // This flag is used to fix spec difference between GLSL 4.1 or lower and ESSL3.
-    bool removeInvariantAndCentroidForESSL3;
 };
 }
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.h b/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.h
index cc1b17bb7..0ba57b62b 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.h
@@ -35,8 +35,7 @@ class DisplayCGL : public DisplayGL
                                       const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                const egl::Config *configuration,
-                                               EGLenum buftype,
-                                               EGLClientBuffer clientBuffer,
+                                               EGLClientBuffer shareHandle,
                                                const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPixmapSurface(const egl::SurfaceState &state,
                                      const egl::Config *configuration,
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm b/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
index f87134c82..b9d5f39b0 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
@@ -128,8 +128,7 @@ SurfaceImpl *DisplayCGL::createPbufferSurface(const egl::SurfaceState &state,
 
 SurfaceImpl *DisplayCGL::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                        const egl::Config *configuration,
-                                                       EGLenum buftype,
-                                                       EGLClientBuffer clientBuffer,
+                                                       EGLClientBuffer shareHandle,
                                                        const egl::AttributeMap &attribs)
 {
     UNIMPLEMENTED();
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.h b/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.h
index 7cbb74da4..1e198bf5a 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.h
@@ -53,7 +53,7 @@ class PbufferSurfaceCGL : public SurfaceGL
 
     const FunctionsGL *mFunctions;
     StateManagerGL *mStateManager;
-    RendererGL *mRenderer;
+    const WorkaroundsGL &mWorkarounds;
 
     GLuint mFramebuffer;
     GLuint mColorRenderbuffer;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.mm b/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.mm
index c03d3836f..b9689177e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.mm
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.mm
@@ -28,7 +28,7 @@ PbufferSurfaceCGL::PbufferSurfaceCGL(const egl::SurfaceState &state,
       mHeight(height),
       mFunctions(functions),
       mStateManager(renderer->getStateManager()),
-      mRenderer(renderer),
+      mWorkarounds(renderer->getWorkarounds()),
       mFramebuffer(0),
       mColorRenderbuffer(0),
       mDSRenderbuffer(0)
@@ -136,8 +136,7 @@ EGLint PbufferSurfaceCGL::getSwapBehavior() const
 FramebufferImpl *PbufferSurfaceCGL::createDefaultFramebuffer(const gl::FramebufferState &state)
 {
     // TODO(cwallez) assert it happens only once?
-    return new FramebufferGL(mFramebuffer, state, mFunctions, mRenderer->getWorkarounds(),
-                             mRenderer->getBlitter(), mStateManager);
+    return new FramebufferGL(mFramebuffer, state, mFunctions, mWorkarounds, mStateManager);
 }
 
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.h b/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.h
index 165ab0486..d8f1a14d7 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.h
@@ -88,7 +88,6 @@ class WindowSurfaceCGL : public SurfaceGL
     CGLContextObj mContext;
     const FunctionsGL *mFunctions;
     StateManagerGL *mStateManager;
-    RendererGL *mRenderer;
     const WorkaroundsGL &mWorkarounds;
 
     GLuint mFramebuffer;
diff --git a/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm b/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm
index c2ac4dca4..b5375b1f9 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm
+++ b/gfx/angle/src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm
@@ -154,12 +154,11 @@
           mContext(context),
           mFunctions(functions),
           mStateManager(renderer->getStateManager()),
-          mRenderer(renderer),
           mWorkarounds(renderer->getWorkarounds()),
           mFramebuffer(0),
           mDSRenderbuffer(0)
-    {
-        pthread_mutex_init(&mSwapState.mutex, nullptr);
+{
+    pthread_mutex_init(&mSwapState.mutex, nullptr);
 }
 
 WindowSurfaceCGL::~WindowSurfaceCGL()
@@ -325,8 +324,7 @@ EGLint WindowSurfaceCGL::getSwapBehavior() const
 FramebufferImpl *WindowSurfaceCGL::createDefaultFramebuffer(const gl::FramebufferState &state)
 {
     // TODO(cwallez) assert it happens only once?
-    return new FramebufferGL(mFramebuffer, state, mFunctions, mWorkarounds, mRenderer->getBlitter(),
-                             mStateManager);
+    return new FramebufferGL(mFramebuffer, state, mFunctions, mWorkarounds, mStateManager);
 }
 
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp
index 693b61c9c..388832b2a 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp
@@ -33,6 +33,7 @@ SurfaceEGL::~SurfaceEGL()
     if (mSurface != EGL_NO_SURFACE)
     {
         EGLBoolean success = mEGL->destroySurface(mSurface);
+        UNUSED_ASSERTION_VARIABLE(success);
         ASSERT(success == EGL_TRUE);
     }
 }
@@ -103,6 +104,7 @@ EGLint SurfaceEGL::getWidth() const
 {
     EGLint value;
     EGLBoolean success = mEGL->querySurface(mSurface, EGL_WIDTH, &value);
+    UNUSED_ASSERTION_VARIABLE(success);
     ASSERT(success == EGL_TRUE);
     return value;
 }
@@ -111,6 +113,7 @@ EGLint SurfaceEGL::getHeight() const
 {
     EGLint value;
     EGLBoolean success = mEGL->querySurface(mSurface, EGL_HEIGHT, &value);
+    UNUSED_ASSERTION_VARIABLE(success);
     ASSERT(success == EGL_TRUE);
     return value;
 }
@@ -125,6 +128,7 @@ EGLint SurfaceEGL::getSwapBehavior() const
 {
     EGLint value;
     EGLBoolean success = mEGL->querySurface(mSurface, EGL_SWAP_BEHAVIOR, &value);
+    UNUSED_ASSERTION_VARIABLE(success);
     ASSERT(success == EGL_TRUE);
     return value;
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.cpp b/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.cpp
index b689578c9..4956c5b3f 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.cpp
@@ -159,6 +159,7 @@ SurfaceImpl *DisplayAndroid::createWindowSurface(const egl::SurfaceState &state,
                                        EGL_NONE};
     success = mEGL->chooseConfig(configAttribList, &config, 1, &numConfig);
     ASSERT(success && numConfig == 1);
+    UNUSED_ASSERTION_VARIABLE(success);
 
     return new WindowSurfaceEGL(state, mEGL, config, window, attribs.toIntVector(), mContext,
                                 getRenderer());
@@ -176,6 +177,7 @@ SurfaceImpl *DisplayAndroid::createPbufferSurface(const egl::SurfaceState &state
                                        EGL_NONE};
     success = mEGL->chooseConfig(configAttribList, &config, 1, &numConfig);
     ASSERT(success && numConfig == 1);
+    UNUSED_ASSERTION_VARIABLE(success);
 
     return new PbufferSurfaceEGL(state, mEGL, config, attribs.toIntVector(), mContext,
                                  getRenderer());
@@ -183,8 +185,7 @@ SurfaceImpl *DisplayAndroid::createPbufferSurface(const egl::SurfaceState &state
 
 SurfaceImpl *DisplayAndroid::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                            const egl::Config *configuration,
-                                                           EGLenum buftype,
-                                                           EGLClientBuffer clientBuffer,
+                                                           EGLClientBuffer shareHandle,
                                                            const egl::AttributeMap &attribs)
 {
     UNIMPLEMENTED();
@@ -214,6 +215,7 @@ void DisplayAndroid::getConfigAttrib(EGLConfig config, EGLint attribute, T *valu
     EGLint tmp;
     EGLBoolean success = mEGL->getConfigAttrib(config, attribute, &tmp);
     ASSERT(success == EGL_TRUE);
+    UNUSED_ASSERTION_VARIABLE(success);
     *value = tmp;
 }
 
@@ -231,6 +233,7 @@ egl::ConfigSet DisplayAndroid::generateConfigs()
     success =
         mEGL->chooseConfig(mConfigAttribList.data(), configs.data(), numConfigs, &numConfigs2);
     ASSERT(success == EGL_TRUE && numConfigs2 == numConfigs);
+    UNUSED_ASSERTION_VARIABLE(success);
 
     for (int i = 0; i < numConfigs; i++)
     {
diff --git a/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.h b/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.h
index 0be9bb465..693532fb4 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/egl/android/DisplayAndroid.h
@@ -36,8 +36,7 @@ class DisplayAndroid : public DisplayEGL
                                       const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                const egl::Config *configuration,
-                                               EGLenum buftype,
-                                               EGLClientBuffer clientBuffer,
+                                               EGLClientBuffer shareHandle,
                                                const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPixmapSurface(const egl::SurfaceState &state,
                                      const egl::Config *configuration,
diff --git a/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.cpp b/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.cpp
index 01549fcfa..6f5321632 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.cpp
@@ -308,9 +308,9 @@ uint32_t DisplayOzone::Buffer::getDRMFB()
 
 FramebufferGL *DisplayOzone::Buffer::framebufferGL(const gl::FramebufferState &state)
 {
-    return new FramebufferGL(
-        mGLFB, state, mDisplay->mFunctionsGL, mDisplay->getRenderer()->getWorkarounds(),
-        mDisplay->getRenderer()->getBlitter(), mDisplay->getRenderer()->getStateManager());
+    return new FramebufferGL(mGLFB, state, mDisplay->mFunctionsGL,
+                             mDisplay->getRenderer()->getWorkarounds(),
+                             mDisplay->getRenderer()->getStateManager());
 }
 
 void DisplayOzone::Buffer::present()
@@ -859,8 +859,7 @@ SurfaceImpl *DisplayOzone::createPbufferSurface(const egl::SurfaceState &state,
 
 SurfaceImpl *DisplayOzone::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                          const egl::Config *configuration,
-                                                         EGLenum buftype,
-                                                         EGLClientBuffer clientBuffer,
+                                                         EGLClientBuffer shareHandle,
                                                          const egl::AttributeMap &attribs)
 {
     UNIMPLEMENTED();
diff --git a/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.h b/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.h
index 77c669314..55a188c3e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/egl/ozone/DisplayOzone.h
@@ -122,8 +122,7 @@ class DisplayOzone final : public DisplayEGL
                                       const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                const egl::Config *configuration,
-                                               EGLenum buftype,
-                                               EGLClientBuffer clientBuffer,
+                                               EGLClientBuffer shareHandle,
                                                const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPixmapSurface(const egl::SurfaceState &state,
                                      const egl::Config *configuration,
diff --git a/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp b/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp
index c5219b4b8..1688be116 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.cpp
@@ -438,32 +438,6 @@ static GLenum GetNativeType(const FunctionsGL *functions,
     return result;
 }
 
-static GLenum GetNativeReadType(const FunctionsGL *functions,
-                                const WorkaroundsGL &workarounds,
-                                GLenum type)
-{
-    GLenum result = type;
-
-    if (functions->standard == STANDARD_GL_DESKTOP)
-    {
-        if (type == GL_HALF_FLOAT_OES)
-        {
-            // The enums differ for the OES half float extensions and desktop GL spec. Update it.
-            result = GL_HALF_FLOAT;
-        }
-    }
-
-    return result;
-}
-
-static GLenum GetNativeReadFormat(const FunctionsGL *functions,
-                                  const WorkaroundsGL &workarounds,
-                                  GLenum format)
-{
-    GLenum result = format;
-    return result;
-}
-
 TexImageFormat GetTexImageFormat(const FunctionsGL *functions,
                                  const WorkaroundsGL &workarounds,
                                  GLenum internalFormat,
@@ -538,16 +512,6 @@ RenderbufferFormat GetRenderbufferFormat(const FunctionsGL *functions,
         GetNativeInternalFormat(functions, workarounds, internalFormat, internalFormat);
     return result;
 }
-ReadPixelsFormat GetReadPixelsFormat(const FunctionsGL *functions,
-                                     const WorkaroundsGL &workarounds,
-                                     GLenum format,
-                                     GLenum type)
-{
-    ReadPixelsFormat result;
-    result.format = GetNativeReadFormat(functions, workarounds, format);
-    result.type   = GetNativeReadType(functions, workarounds, type);
-    return result;
-}
 }
 
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.h b/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.h
index 616f37af2..547d4783e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/formatutilsgl.h
@@ -112,16 +112,6 @@ struct RenderbufferFormat
 RenderbufferFormat GetRenderbufferFormat(const FunctionsGL *functions,
                                          const WorkaroundsGL &workarounds,
                                          GLenum internalFormat);
-
-struct ReadPixelsFormat
-{
-    GLenum format;
-    GLenum type;
-};
-ReadPixelsFormat GetReadPixelsFormat(const FunctionsGL *functions,
-                                     const WorkaroundsGL &workarounds,
-                                     GLenum format,
-                                     GLenum type);
 }
 
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.cpp b/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.cpp
index e98401d0a..0358a428e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.cpp
@@ -350,7 +350,7 @@ egl::Error DisplayGLX::initialize(egl::Display *display)
     bool isOpenGLES =
         eglAttributes.get(EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE) ==
         EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE;
-    if (isOpenGLES && (IsIntel(vendor) || IsNvidia(vendor)))
+    if (isOpenGLES && (vendor == VENDOR_ID_INTEL || vendor == VENDOR_ID_NVIDIA))
     {
         return egl::Error(EGL_NOT_INITIALIZED, "Intel or NVIDIA OpenGL ES drivers are not supported.");
     }
@@ -410,8 +410,7 @@ SurfaceImpl *DisplayGLX::createPbufferSurface(const egl::SurfaceState &state,
 
 SurfaceImpl *DisplayGLX::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                        const egl::Config *configuration,
-                                                       EGLenum buftype,
-                                                       EGLClientBuffer clientBuffer,
+                                                       EGLClientBuffer shareHandle,
                                                        const egl::AttributeMap &attribs)
 {
     UNIMPLEMENTED();
diff --git a/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.h b/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.h
index 7e870c2f3..79198395d 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/glx/DisplayGLX.h
@@ -53,8 +53,7 @@ class DisplayGLX : public DisplayGL
                                       const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                const egl::Config *configuration,
-                                               EGLenum buftype,
-                                               EGLClientBuffer clientBuffer,
+                                               EGLClientBuffer shareHandle,
                                                const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPixmapSurface(const egl::SurfaceState &state,
                                      const egl::Config *configuration,
diff --git a/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.cpp b/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.cpp
index 504a787f8..87fd24a61 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.cpp
@@ -11,8 +11,6 @@
 
 #include <limits>
 
-#include "common/mathutil.h"
-#include "libANGLE/Buffer.h"
 #include "libANGLE/Caps.h"
 #include "libANGLE/formatutils.h"
 #include "libANGLE/renderer/gl/FunctionsGL.h"
@@ -22,8 +20,6 @@
 #include <algorithm>
 #include <sstream>
 
-using angle::CheckedNumeric;
-
 namespace rx
 {
 VendorID GetVendorID(const FunctionsGL *functions)
@@ -871,81 +867,35 @@ void GenerateCaps(const FunctionsGL *functions, gl::Caps *caps, gl::TextureCapsM
         functions->isAtLeastGLES(gl::Version(3, 1));
 
     extensions->pathRendering = canEnableGLPathRendering || canEnableESPathRendering;
-
-    extensions->textureSRGBDecode = functions->hasGLExtension("GL_EXT_texture_sRGB_decode") ||
-                                    functions->hasGLESExtension("GL_EXT_texture_sRGB_decode");
-
-#if defined(ANGLE_PLATFORM_APPLE)
-    VendorID vendor = GetVendorID(functions);
-    if ((IsAMD(vendor) || IsIntel(vendor)) && *maxSupportedESVersion >= gl::Version(3, 0))
-    {
-        // Apple Intel/AMD drivers do not correctly use the TEXTURE_SRGB_DECODE property of sampler
-        // states.  Disable this extension when we would advertise any ES version that has samplers.
-        extensions->textureSRGBDecode = false;
-    }
-#endif
-
-    extensions->sRGBWriteControl = functions->isAtLeastGL(gl::Version(3, 0)) ||
-                                   functions->hasGLExtension("GL_EXT_framebuffer_sRGB") ||
-                                   functions->hasGLExtension("GL_ARB_framebuffer_sRGB") ||
-                                   functions->hasGLESExtension("GL_EXT_sRGB_write_control");
-
-#if defined(ANGLE_PLATFORM_ANDROID)
-    // SRGB blending does not appear to work correctly on the Nexus 5. Writing to an SRGB
-    // framebuffer with GL_FRAMEBUFFER_SRGB enabled and then reading back returns the same value.
-    // Disabling GL_FRAMEBUFFER_SRGB will then convert in the wrong direction.
-    extensions->sRGBWriteControl = false;
-#endif
 }
 
 void GenerateWorkarounds(const FunctionsGL *functions, WorkaroundsGL *workarounds)
 {
     VendorID vendor = GetVendorID(functions);
 
-    workarounds->dontRemoveInvariantForFragmentInput =
-        functions->standard == STANDARD_GL_DESKTOP && IsAMD(vendor);
-
     // Don't use 1-bit alpha formats on desktop GL with AMD or Intel drivers.
     workarounds->avoid1BitAlphaTextureFormats =
-        functions->standard == STANDARD_GL_DESKTOP && (IsAMD(vendor) || IsIntel(vendor));
+        functions->standard == STANDARD_GL_DESKTOP &&
+        (vendor == VENDOR_ID_AMD || vendor == VENDOR_ID_INTEL);
 
     workarounds->rgba4IsNotSupportedForColorRendering =
-        functions->standard == STANDARD_GL_DESKTOP && IsIntel(vendor);
-
-    workarounds->emulateAbsIntFunction = IsIntel(vendor);
-
-    workarounds->addAndTrueToLoopCondition = IsIntel(vendor);
-
-    workarounds->emulateIsnanFloat = IsIntel(vendor);
+        functions->standard == STANDARD_GL_DESKTOP && vendor == VENDOR_ID_INTEL;
 
     workarounds->doesSRGBClearsOnLinearFramebufferAttachments =
-        functions->standard == STANDARD_GL_DESKTOP && (IsIntel(vendor) || IsAMD(vendor));
+        functions->standard == STANDARD_GL_DESKTOP &&
+        (vendor == VENDOR_ID_INTEL || vendor == VENDOR_ID_AMD);
 
 #if defined(ANGLE_PLATFORM_APPLE)
     workarounds->doWhileGLSLCausesGPUHang = true;
-    workarounds->useUnusedBlocksWithStandardOrSharedLayout = true;
 #endif
 
     workarounds->finishDoesNotCauseQueriesToBeAvailable =
-        functions->standard == STANDARD_GL_DESKTOP && IsNvidia(vendor);
+        functions->standard == STANDARD_GL_DESKTOP && vendor == VENDOR_ID_NVIDIA;
 
     // TODO(cwallez): Disable this workaround for MacOSX versions 10.9 or later.
     workarounds->alwaysCallUseProgramAfterLink = true;
 
-    workarounds->unpackOverlappingRowsSeparatelyUnpackBuffer = IsNvidia(vendor);
-    workarounds->packOverlappingRowsSeparatelyPackBuffer     = IsNvidia(vendor);
-
-    workarounds->initializeCurrentVertexAttributes = IsNvidia(vendor);
-
-#if defined(ANGLE_PLATFORM_APPLE)
-    workarounds->unpackLastRowSeparatelyForPaddingInclusion = true;
-    workarounds->packLastRowSeparatelyForPaddingInclusion   = true;
-#else
-    workarounds->unpackLastRowSeparatelyForPaddingInclusion = IsNvidia(vendor);
-    workarounds->packLastRowSeparatelyForPaddingInclusion   = IsNvidia(vendor);
-#endif
-
-    workarounds->removeInvariantAndCentroidForESSL3 = functions->isAtMostGL(gl::Version(4, 1));
+    workarounds->unpackOverlappingRowsSeparatelyUnpackBuffer = vendor == VENDOR_ID_NVIDIA;
 }
 
 }
@@ -1001,45 +951,4 @@ uint8_t *MapBufferRangeWithFallback(const FunctionsGL *functions,
         return nullptr;
     }
 }
-
-gl::ErrorOrResult<bool> ShouldApplyLastRowPaddingWorkaround(const gl::Extents &size,
-                                                            const gl::PixelStoreStateBase &state,
-                                                            GLenum format,
-                                                            GLenum type,
-                                                            bool is3D,
-                                                            const void *pixels)
-{
-    if (state.pixelBuffer.get() == nullptr)
-    {
-        return false;
-    }
-
-    // We are using an pack or unpack buffer, compute what the driver thinks is going to be the
-    // last byte read or written. If it is past the end of the buffer, we will need to use the
-    // workaround otherwise the driver will generate INVALID_OPERATION and not do the operation.
-    CheckedNumeric<size_t> checkedEndByte;
-    CheckedNumeric<size_t> pixelBytes;
-    size_t rowPitch;
-
-    const gl::InternalFormat &glFormat =
-        gl::GetInternalFormatInfo(gl::GetSizedInternalFormat(format, type));
-    ANGLE_TRY_RESULT(glFormat.computePackUnpackEndByte(size, state, is3D), checkedEndByte);
-    ANGLE_TRY_RESULT(glFormat.computeRowPitch(size.width, state.alignment, state.rowLength),
-                     rowPitch);
-    pixelBytes = glFormat.pixelBytes;
-
-    checkedEndByte += reinterpret_cast<intptr_t>(pixels);
-
-    // At this point checkedEndByte is the actual last byte read.
-    // The driver adds an extra row padding (if any), mimic it.
-    ANGLE_TRY_CHECKED_MATH(pixelBytes);
-    if (pixelBytes.ValueOrDie() * size.width < rowPitch)
-    {
-        checkedEndByte += rowPitch - pixelBytes * size.width;
-    }
-
-    ANGLE_TRY_CHECKED_MATH(checkedEndByte);
-
-    return checkedEndByte.ValueOrDie() > static_cast<size_t>(state.pixelBuffer->getSize());
-}
 }
diff --git a/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.h b/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.h
index 1e9338fb5..3b0cab27e 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/renderergl_utils.h
@@ -11,8 +11,6 @@
 #define LIBANGLE_RENDERER_GL_RENDERERGLUTILS_H_
 
 #include "libANGLE/angletypes.h"
-#include "libANGLE/Error.h"
-#include "libANGLE/renderer/driver_utils.h"
 #include "libANGLE/renderer/gl/functionsgl_typedefs.h"
 
 #include <string>
@@ -49,13 +47,6 @@ uint8_t *MapBufferRangeWithFallback(const FunctionsGL *functions,
                                     size_t offset,
                                     size_t length,
                                     GLbitfield access);
-
-gl::ErrorOrResult<bool> ShouldApplyLastRowPaddingWorkaround(const gl::Extents &size,
-                                                            const gl::PixelStoreStateBase &state,
-                                                            GLenum format,
-                                                            GLenum type,
-                                                            bool is3D,
-                                                            const void *pixels);
 }
 
 #endif // LIBANGLE_RENDERER_GL_RENDERERGLUTILS_H_
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.cpp
deleted file mode 100644
index f19e8fdf3..000000000
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.cpp
+++ /dev/null
@@ -1,384 +0,0 @@
-//
-// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-
-// D3DTextureSurfaceWGL.cpp: WGL implementation of egl::Surface for D3D texture interop.
-
-#include "libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h"
-
-#include "libANGLE/renderer/gl/FramebufferGL.h"
-#include "libANGLE/renderer/gl/TextureGL.h"
-#include "libANGLE/renderer/gl/RendererGL.h"
-#include "libANGLE/renderer/gl/StateManagerGL.h"
-#include "libANGLE/renderer/gl/wgl/DisplayWGL.h"
-#include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
-
-namespace rx
-{
-
-namespace
-{
-
-egl::Error GetD3DTextureInfo(EGLClientBuffer clientBuffer,
-                             size_t *width,
-                             size_t *height,
-                             IUnknown **object,
-                             IUnknown **device)
-{
-    IUnknown *buffer = static_cast<IUnknown *>(clientBuffer);
-
-    IDirect3DTexture9 *texture9 = nullptr;
-    ID3D11Texture2D *texture11  = nullptr;
-    if (SUCCEEDED(buffer->QueryInterface<ID3D11Texture2D>(&texture11)))
-    {
-        D3D11_TEXTURE2D_DESC textureDesc;
-        texture11->GetDesc(&textureDesc);
-
-        // From table egl.restrictions in EGL_ANGLE_d3d_texture_client_buffer.
-        switch (textureDesc.Format)
-        {
-            case DXGI_FORMAT_R8G8B8A8_UNORM:
-            case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
-            case DXGI_FORMAT_B8G8R8A8_UNORM:
-            case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
-            case DXGI_FORMAT_R16G16B16A16_FLOAT:
-            case DXGI_FORMAT_R32G32B32A32_FLOAT:
-                break;
-
-            default:
-                SafeRelease(texture11);
-                return egl::Error(EGL_BAD_PARAMETER, "Unknown client buffer texture format: %u.",
-                                  textureDesc.Format);
-        }
-
-        ID3D11Device *d3d11Device = nullptr;
-        texture11->GetDevice(&d3d11Device);
-        if (d3d11Device == nullptr)
-        {
-            SafeRelease(texture11);
-            return egl::Error(EGL_BAD_PARAMETER,
-                              "Could not query the D3D11 device from the client buffer.");
-        }
-
-        if (width)
-        {
-            *width = textureDesc.Width;
-        }
-        if (height)
-        {
-            *height = textureDesc.Height;
-        }
-
-        if (device)
-        {
-            *device = d3d11Device;
-        }
-        else
-        {
-            SafeRelease(d3d11Device);
-        }
-
-        if (object)
-        {
-            *object = texture11;
-        }
-        else
-        {
-            SafeRelease(texture11);
-        }
-
-        return egl::Error(EGL_SUCCESS);
-    }
-    else if (SUCCEEDED(buffer->QueryInterface<IDirect3DTexture9>(&texture9)))
-    {
-        D3DSURFACE_DESC surfaceDesc;
-        if (FAILED(texture9->GetLevelDesc(0, &surfaceDesc)))
-        {
-            SafeRelease(texture9);
-            return egl::Error(EGL_BAD_PARAMETER,
-                              "Could not query description of the D3D9 surface.");
-        }
-
-        // From table egl.restrictions in EGL_ANGLE_d3d_texture_client_buffer.
-        switch (surfaceDesc.Format)
-        {
-            case D3DFMT_R8G8B8:
-            case D3DFMT_A8R8G8B8:
-            case D3DFMT_A16B16G16R16F:
-            case D3DFMT_A32B32G32R32F:
-                break;
-
-            default:
-                SafeRelease(texture9);
-                return egl::Error(EGL_BAD_PARAMETER, "Unknown client buffer texture format: %u.",
-                                  surfaceDesc.Format);
-        }
-
-        if (width)
-        {
-            *width = surfaceDesc.Width;
-        }
-        if (height)
-        {
-            *height = surfaceDesc.Height;
-        }
-
-        IDirect3DDevice9 *d3d9Device = nullptr;
-        HRESULT result               = texture9->GetDevice(&d3d9Device);
-        if (FAILED(result))
-        {
-            SafeRelease(texture9);
-            return egl::Error(EGL_BAD_PARAMETER,
-                              "Could not query the D3D9 device from the client buffer.");
-        }
-
-        if (device)
-        {
-            *device = d3d9Device;
-        }
-        else
-        {
-            SafeRelease(d3d9Device);
-        }
-
-        if (object)
-        {
-            *object = texture9;
-        }
-        else
-        {
-            SafeRelease(texture9);
-        }
-
-        return egl::Error(EGL_SUCCESS);
-    }
-    else
-    {
-        return egl::Error(EGL_BAD_PARAMETER,
-                          "Provided buffer is not a IDirect3DTexture9 or ID3D11Texture2D.");
-    }
-}
-
-}  // anonymous namespace
-
-D3DTextureSurfaceWGL::D3DTextureSurfaceWGL(const egl::SurfaceState &state,
-                                           RendererGL *renderer,
-                                           EGLClientBuffer clientBuffer,
-                                           DisplayWGL *display,
-                                           HGLRC wglContext,
-                                           HDC deviceContext,
-                                           const FunctionsGL *functionsGL,
-                                           const FunctionsWGL *functionsWGL)
-    : SurfaceGL(state, renderer),
-      mClientBuffer(clientBuffer),
-      mRenderer(renderer),
-      mDisplay(display),
-      mStateManager(renderer->getStateManager()),
-      mWorkarounds(renderer->getWorkarounds()),
-      mFunctionsGL(functionsGL),
-      mFunctionsWGL(functionsWGL),
-      mWGLContext(wglContext),
-      mDeviceContext(deviceContext),
-      mWidth(0),
-      mHeight(0),
-      mDeviceHandle(nullptr),
-      mObject(nullptr),
-      mBoundObjectTextureHandle(nullptr),
-      mBoundObjectRenderbufferHandle(nullptr),
-      mRenderbufferID(0),
-      mFramebufferID(0)
-{
-}
-
-D3DTextureSurfaceWGL::~D3DTextureSurfaceWGL()
-{
-    ASSERT(mBoundObjectTextureHandle == nullptr);
-
-    SafeRelease(mObject);
-
-    if (mDeviceHandle)
-    {
-        if (mBoundObjectRenderbufferHandle)
-        {
-            mFunctionsWGL->dxUnregisterObjectNV(mDeviceHandle, mBoundObjectRenderbufferHandle);
-            mBoundObjectRenderbufferHandle = nullptr;
-        }
-        mStateManager->deleteRenderbuffer(mRenderbufferID);
-
-        if (mBoundObjectTextureHandle)
-        {
-            mFunctionsWGL->dxUnregisterObjectNV(mDeviceHandle, mBoundObjectTextureHandle);
-            mBoundObjectTextureHandle = nullptr;
-        }
-
-        // GL framebuffer is deleted by the default framebuffer object
-        mFramebufferID = 0;
-
-        mDisplay->releaseD3DDevice(mDeviceHandle);
-        mDeviceHandle = nullptr;
-    }
-}
-
-egl::Error D3DTextureSurfaceWGL::ValidateD3DTextureClientBuffer(EGLClientBuffer clientBuffer)
-{
-    return GetD3DTextureInfo(clientBuffer, nullptr, nullptr, nullptr, nullptr);
-}
-
-egl::Error D3DTextureSurfaceWGL::initialize()
-{
-    IUnknown *device = nullptr;
-    ANGLE_TRY(GetD3DTextureInfo(mClientBuffer, &mWidth, &mHeight, &mObject, &device));
-
-    ASSERT(device != nullptr);
-    egl::Error error = mDisplay->registerD3DDevice(device, &mDeviceHandle);
-    SafeRelease(device);
-    if (error.isError())
-    {
-        return error;
-    }
-
-    mFunctionsGL->genRenderbuffers(1, &mRenderbufferID);
-    mStateManager->bindRenderbuffer(GL_RENDERBUFFER, mRenderbufferID);
-    mBoundObjectRenderbufferHandle = mFunctionsWGL->dxRegisterObjectNV(
-        mDeviceHandle, mObject, mRenderbufferID, GL_RENDERBUFFER, WGL_ACCESS_READ_WRITE_NV);
-    if (mBoundObjectRenderbufferHandle == nullptr)
-    {
-        return egl::Error(EGL_BAD_ALLOC, "Failed to register D3D object, error: 0x%08x.",
-                          HRESULT_CODE(GetLastError()));
-    }
-
-    mFunctionsGL->genFramebuffers(1, &mFramebufferID);
-    mStateManager->bindFramebuffer(GL_FRAMEBUFFER, mFramebufferID);
-    mFunctionsGL->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER,
-                                          mRenderbufferID);
-
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::makeCurrent()
-{
-    if (!mFunctionsWGL->makeCurrent(mDeviceContext, mWGLContext))
-    {
-        // TODO(geofflang): What error type here?
-        return egl::Error(EGL_CONTEXT_LOST, "Failed to make the WGL context current.");
-    }
-
-    if (!mFunctionsWGL->dxLockObjectsNV(mDeviceHandle, 1, &mBoundObjectRenderbufferHandle))
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to lock object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::unMakeCurrent()
-{
-    if (!mFunctionsWGL->dxUnlockObjectsNV(mDeviceHandle, 1, &mBoundObjectRenderbufferHandle))
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to unlock object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::swap()
-{
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height)
-{
-    UNIMPLEMENTED();
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::querySurfacePointerANGLE(EGLint attribute, void **value)
-{
-    UNIMPLEMENTED();
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::bindTexImage(gl::Texture *texture, EGLint buffer)
-{
-    ASSERT(mBoundObjectTextureHandle == nullptr);
-
-    const TextureGL *textureGL = GetImplAs<TextureGL>(texture);
-    GLuint textureID           = textureGL->getTextureID();
-
-    mBoundObjectTextureHandle = mFunctionsWGL->dxRegisterObjectNV(
-        mDeviceHandle, mObject, textureID, GL_TEXTURE_2D, WGL_ACCESS_READ_WRITE_NV);
-    if (mBoundObjectTextureHandle == nullptr)
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to register D3D object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-
-    if (!mFunctionsWGL->dxLockObjectsNV(mDeviceHandle, 1, &mBoundObjectTextureHandle))
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to lock object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-
-    return egl::Error(EGL_SUCCESS);
-}
-
-egl::Error D3DTextureSurfaceWGL::releaseTexImage(EGLint buffer)
-{
-    ASSERT(mBoundObjectTextureHandle != nullptr);
-    if (!mFunctionsWGL->dxUnlockObjectsNV(mDeviceHandle, 1, &mBoundObjectTextureHandle))
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to unlock object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-
-    if (!mFunctionsWGL->dxUnregisterObjectNV(mDeviceHandle, mBoundObjectTextureHandle))
-    {
-        DWORD error = GetLastError();
-        return egl::Error(EGL_BAD_ALLOC, "Failed to unregister D3D object, error: 0x%08x.",
-                          HRESULT_CODE(error));
-    }
-    mBoundObjectTextureHandle = nullptr;
-
-    return egl::Error(EGL_SUCCESS);
-}
-
-void D3DTextureSurfaceWGL::setSwapInterval(EGLint interval)
-{
-    UNIMPLEMENTED();
-}
-
-EGLint D3DTextureSurfaceWGL::getWidth() const
-{
-    return static_cast<EGLint>(mWidth);
-}
-
-EGLint D3DTextureSurfaceWGL::getHeight() const
-{
-    return static_cast<EGLint>(mHeight);
-}
-
-EGLint D3DTextureSurfaceWGL::isPostSubBufferSupported() const
-{
-    return EGL_FALSE;
-}
-
-EGLint D3DTextureSurfaceWGL::getSwapBehavior() const
-{
-    return EGL_BUFFER_PRESERVED;
-}
-
-FramebufferImpl *D3DTextureSurfaceWGL::createDefaultFramebuffer(const gl::FramebufferState &data)
-{
-    return new FramebufferGL(mFramebufferID, data, mFunctionsGL, mWorkarounds,
-                             mRenderer->getBlitter(), mStateManager);
-}
-}  // namespace rx
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h b/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h
deleted file mode 100644
index 8fb1d4003..000000000
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h
+++ /dev/null
@@ -1,86 +0,0 @@
-
-// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-
-// D3DTextureSurfaceWGL.h: WGL implementation of egl::Surface for D3D texture interop.
-
-#ifndef LIBANGLE_RENDERER_GL_WGL_D3DTEXTIRESURFACEWGL_H_
-#define LIBANGLE_RENDERER_GL_WGL_D3DTEXTIRESURFACEWGL_H_
-
-#include "libANGLE/renderer/gl/SurfaceGL.h"
-
-#include <GL/wglext.h>
-
-namespace rx
-{
-
-class FunctionsGL;
-class FunctionsWGL;
-class DisplayWGL;
-class StateManagerGL;
-struct WorkaroundsGL;
-
-class D3DTextureSurfaceWGL : public SurfaceGL
-{
-  public:
-    D3DTextureSurfaceWGL(const egl::SurfaceState &state,
-                         RendererGL *renderer,
-                         EGLClientBuffer clientBuffer,
-                         DisplayWGL *display,
-                         HGLRC wglContext,
-                         HDC deviceContext,
-                         const FunctionsGL *functionsGL,
-                         const FunctionsWGL *functionsWGL);
-    ~D3DTextureSurfaceWGL() override;
-
-    static egl::Error ValidateD3DTextureClientBuffer(EGLClientBuffer clientBuffer);
-
-    egl::Error initialize() override;
-    egl::Error makeCurrent() override;
-    egl::Error unMakeCurrent() override;
-
-    egl::Error swap() override;
-    egl::Error postSubBuffer(EGLint x, EGLint y, EGLint width, EGLint height) override;
-    egl::Error querySurfacePointerANGLE(EGLint attribute, void **value) override;
-    egl::Error bindTexImage(gl::Texture *texture, EGLint buffer) override;
-    egl::Error releaseTexImage(EGLint buffer) override;
-    void setSwapInterval(EGLint interval) override;
-
-    EGLint getWidth() const override;
-    EGLint getHeight() const override;
-
-    EGLint isPostSubBufferSupported() const override;
-    EGLint getSwapBehavior() const override;
-
-    FramebufferImpl *createDefaultFramebuffer(const gl::FramebufferState &data) override;
-
-  private:
-    EGLClientBuffer mClientBuffer;
-
-    RendererGL *mRenderer;
-
-    DisplayWGL *mDisplay;
-    StateManagerGL *mStateManager;
-    const WorkaroundsGL &mWorkarounds;
-    const FunctionsGL *mFunctionsGL;
-    const FunctionsWGL *mFunctionsWGL;
-
-    HGLRC mWGLContext;
-    HDC mDeviceContext;
-
-    size_t mWidth;
-    size_t mHeight;
-
-    HANDLE mDeviceHandle;
-    IUnknown *mObject;
-    HANDLE mBoundObjectTextureHandle;
-    HANDLE mBoundObjectRenderbufferHandle;
-
-    GLuint mRenderbufferID;
-    GLuint mFramebufferID;
-};
-}  // namespace rx
-
-#endif  // LIBANGLE_RENDERER_GL_WGL_D3DTEXTIRESURFACEWGL_H_
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.cpp
index 7c5214e82..e07457d10 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.cpp
@@ -36,7 +36,6 @@ DXGISwapChainWindowSurfaceWGL::DXGISwapChainWindowSurfaceWGL(const egl::SurfaceS
       mWindow(window),
       mStateManager(renderer->getStateManager()),
       mWorkarounds(renderer->getWorkarounds()),
-      mRenderer(renderer),
       mFunctionsGL(functionsGL),
       mFunctionsWGL(functionsWGL),
       mDevice(device),
@@ -293,8 +292,7 @@ EGLint DXGISwapChainWindowSurfaceWGL::getSwapBehavior() const
 FramebufferImpl *DXGISwapChainWindowSurfaceWGL::createDefaultFramebuffer(
     const gl::FramebufferState &data)
 {
-    return new FramebufferGL(mFramebufferID, data, mFunctionsGL, mWorkarounds,
-                             mRenderer->getBlitter(), mStateManager);
+    return new FramebufferGL(mFramebufferID, data, mFunctionsGL, mWorkarounds, mStateManager);
 }
 
 egl::Error DXGISwapChainWindowSurfaceWGL::setObjectsLocked(bool locked)
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h b/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h
index f516239c9..66444da9b 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h
@@ -66,7 +66,6 @@ class DXGISwapChainWindowSurfaceWGL : public SurfaceGL
 
     StateManagerGL *mStateManager;
     const WorkaroundsGL &mWorkarounds;
-    RendererGL *mRenderer;
     const FunctionsGL *mFunctionsGL;
     const FunctionsWGL *mFunctionsWGL;
 
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp
index 188321115..4647fe589 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp
@@ -14,15 +14,12 @@
 #include "libANGLE/Surface.h"
 #include "libANGLE/renderer/gl/RendererGL.h"
 #include "libANGLE/renderer/gl/renderergl_utils.h"
-#include "libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h"
 #include "libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h"
 #include "libANGLE/renderer/gl/wgl/FunctionsWGL.h"
 #include "libANGLE/renderer/gl/wgl/PbufferSurfaceWGL.h"
 #include "libANGLE/renderer/gl/wgl/WindowSurfaceWGL.h"
 #include "libANGLE/renderer/gl/wgl/wgl_utils.h"
 
-#include "platform/Platform.h"
-
 #include <EGL/eglext.h>
 #include <string>
 #include <sstream>
@@ -63,7 +60,7 @@ DisplayWGL::DisplayWGL()
       mOpenGLModule(nullptr),
       mFunctionsWGL(nullptr),
       mFunctionsGL(nullptr),
-      mHasRobustness(false),
+      mHasARBCreateContextRobustness(false),
       mWindowClass(0),
       mWindow(nullptr),
       mDeviceContext(nullptr),
@@ -178,7 +175,7 @@ egl::Error DisplayWGL::initialize(egl::Display *display)
     // Reinitialize the wgl functions to grab the extensions
     mFunctionsWGL->initialize(mOpenGLModule, dummyDeviceContext);
 
-    bool hasWGLCreateContextRobustness =
+    mHasARBCreateContextRobustness =
         mFunctionsWGL->hasExtension("WGL_ARB_create_context_robustness");
 
     // Destroy the dummy window and context
@@ -267,7 +264,7 @@ egl::Error DisplayWGL::initialize(egl::Display *display)
 
         std::vector<int> contextCreationAttributes;
 
-        if (hasWGLCreateContextRobustness)
+        if (mHasARBCreateContextRobustness)
         {
             contextCreationAttributes.push_back(WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB);
             contextCreationAttributes.push_back(WGL_LOSE_CONTEXT_ON_RESET_ARB);
@@ -343,17 +340,9 @@ egl::Error DisplayWGL::initialize(egl::Display *display)
     mFunctionsGL = new FunctionsGLWindows(mOpenGLModule, mFunctionsWGL->getProcAddress);
     mFunctionsGL->initialize();
 
-    mHasRobustness = mFunctionsGL->getGraphicsResetStatus != nullptr;
-    if (hasWGLCreateContextRobustness != mHasRobustness)
-    {
-        ANGLEPlatformCurrent()->logWarning(
-            "WGL_ARB_create_context_robustness exists but unable to OpenGL context with "
-            "robustness.");
-    }
-
     // Intel OpenGL ES drivers are not currently supported due to bugs in the driver and ANGLE
     VendorID vendor = GetVendorID(mFunctionsGL);
-    if (requestedDisplayType == EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE && IsIntel(vendor))
+    if (requestedDisplayType == EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE && vendor == VENDOR_ID_INTEL)
     {
         return egl::Error(EGL_NOT_INITIALIZED, "Intel OpenGL ES drivers are not supported.");
     }
@@ -369,7 +358,7 @@ egl::Error DisplayWGL::initialize(egl::Display *display)
         GetWindowThreadProcessId(nativeWindow, &windowProcessId);
 
         // AMD drivers advertise the WGL_NV_DX_interop and WGL_NV_DX_interop2 extensions but fail
-        mUseDXGISwapChains = !IsAMD(vendor) && (currentProcessId != windowProcessId);
+        mUseDXGISwapChains = vendor != VENDOR_ID_AMD && (currentProcessId != windowProcessId);
     }
     else
     {
@@ -465,13 +454,11 @@ SurfaceImpl *DisplayWGL::createPbufferSurface(const egl::SurfaceState &state,
 
 SurfaceImpl *DisplayWGL::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                        const egl::Config *configuration,
-                                                       EGLenum buftype,
-                                                       EGLClientBuffer clientBuffer,
+                                                       EGLClientBuffer shareHandle,
                                                        const egl::AttributeMap &attribs)
 {
-    ASSERT(buftype == EGL_D3D_TEXTURE_ANGLE);
-    return new D3DTextureSurfaceWGL(state, getRenderer(), clientBuffer, this, mWGLContext,
-                                    mDeviceContext, mFunctionsGL, mFunctionsWGL);
+    UNIMPLEMENTED();
+    return nullptr;
 }
 
 SurfaceImpl *DisplayWGL::createPixmapSurface(const egl::SurfaceState &state,
@@ -566,7 +553,7 @@ egl::ConfigSet DisplayWGL::generateConfigs()
 
 bool DisplayWGL::testDeviceLost()
 {
-    if (mHasRobustness)
+    if (mHasARBCreateContextRobustness)
     {
         return getRenderer()->getResetStatus() != GL_NO_ERROR;
     }
@@ -584,21 +571,6 @@ bool DisplayWGL::isValidNativeWindow(EGLNativeWindowType window) const
     return (IsWindow(window) == TRUE);
 }
 
-egl::Error DisplayWGL::validateClientBuffer(const egl::Config *configuration,
-                                            EGLenum buftype,
-                                            EGLClientBuffer clientBuffer,
-                                            const egl::AttributeMap &attribs) const
-{
-    switch (buftype)
-    {
-        case EGL_D3D_TEXTURE_ANGLE:
-            return D3DTextureSurfaceWGL::ValidateD3DTextureClientBuffer(clientBuffer);
-
-        default:
-            return DisplayGL::validateClientBuffer(configuration, buftype, clientBuffer, attribs);
-    }
-}
-
 std::string DisplayWGL::getVendorString() const
 {
     //UNIMPLEMENTED();
@@ -661,9 +633,7 @@ void DisplayWGL::generateExtensions(egl::DisplayExtensions *outExtensions) const
     outExtensions->postSubBuffer      = mUseDXGISwapChains;
     outExtensions->surfaceOrientation = mUseDXGISwapChains;
 
-    outExtensions->createContextRobustness = mHasRobustness;
-
-    outExtensions->d3dTextureClientBuffer = mFunctionsWGL->hasExtension("WGL_NV_DX_interop2");
+    outExtensions->createContextRobustness = mHasARBCreateContextRobustness;
 }
 
 void DisplayWGL::generateCaps(egl::Caps *outCaps) const
diff --git a/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.h b/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.h
index 509ea9b39..3f56ecf4f 100755
--- a/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.h
+++ b/gfx/angle/src/libANGLE/renderer/gl/wgl/DisplayWGL.h
@@ -37,8 +37,7 @@ class DisplayWGL : public DisplayGL
                                       const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                const egl::Config *configuration,
-                                               EGLenum buftype,
-                                               EGLClientBuffer clientBuffer,
+                                               EGLClientBuffer shareHandle,
                                                const egl::AttributeMap &attribs) override;
     SurfaceImpl *createPixmapSurface(const egl::SurfaceState &state,
                                      const egl::Config *configuration,
@@ -51,10 +50,6 @@ class DisplayWGL : public DisplayGL
     egl::Error restoreLostDevice() override;
 
     bool isValidNativeWindow(EGLNativeWindowType window) const override;
-    egl::Error validateClientBuffer(const egl::Config *configuration,
-                                    EGLenum buftype,
-                                    EGLClientBuffer clientBuffer,
-                                    const egl::AttributeMap &attribs) const override;
 
     egl::Error getDevice(DeviceImpl **device) override;
 
@@ -83,7 +78,7 @@ class DisplayWGL : public DisplayGL
     FunctionsWGL *mFunctionsWGL;
     FunctionsGL *mFunctionsGL;
 
-    bool mHasRobustness;
+    bool mHasARBCreateContextRobustness;
 
     ATOM mWindowClass;
     HWND mWindow;