Add m-esr52 at 52.6.0

1 files changed, 318 insertions, 0 deletions

diff --git a/dom/canvas/WebGLUniformLocation.cpp b/dom/canvas/WebGLUniformLocation.cpp
new file mode 100644
index 000000000..ccd6685b0
--- /dev/null
+++ b/dom/canvas/WebGLUniformLocation.cpp
@@ -0,0 +1,318 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebGLUniformLocation.h"
+
+#include "GLContext.h"
+#include "mozilla/dom/ToJSValue.h"
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLActiveInfo.h"
+#include "WebGLContext.h"
+#include "WebGLProgram.h"
+
+namespace mozilla {
+
+WebGLUniformLocation::WebGLUniformLocation(WebGLContext* webgl,
+                                           const webgl::LinkedProgramInfo* linkInfo,
+                                           webgl::UniformInfo* info, GLuint loc,
+                                           size_t arrayIndex)
+    : WebGLContextBoundObject(webgl)
+    , mLinkInfo(linkInfo)
+    , mInfo(info)
+    , mLoc(loc)
+    , mArrayIndex(arrayIndex)
+{ }
+
+WebGLUniformLocation::~WebGLUniformLocation()
+{ }
+
+bool
+WebGLUniformLocation::ValidateForProgram(const WebGLProgram* prog,
+                                         const char* funcName) const
+{
+    // Check the weak-pointer.
+    if (!mLinkInfo) {
+        mContext->ErrorInvalidOperation("%s: This uniform location is obsolete because"
+                                        " its program has been successfully relinked.",
+                                        funcName);
+        return false;
+    }
+
+    if (mLinkInfo->prog != prog) {
+        mContext->ErrorInvalidOperation("%s: This uniform location corresponds to a"
+                                        " different program.", funcName);
+        return false;
+    }
+
+    return true;
+}
+
+static bool
+IsUniformSetterTypeValid(GLenum setterType, GLenum uniformType)
+{
+    // The order in this switch matches table 2.10 from OpenGL ES
+    // 3.0.4 (Aug 27, 2014) es_spec_3.0.4.pdf
+    switch (uniformType) {
+    case LOCAL_GL_FLOAT:
+    case LOCAL_GL_FLOAT_VEC2:
+    case LOCAL_GL_FLOAT_VEC3:
+    case LOCAL_GL_FLOAT_VEC4:
+        return setterType == LOCAL_GL_FLOAT;
+
+    case LOCAL_GL_INT:
+    case LOCAL_GL_INT_VEC2:
+    case LOCAL_GL_INT_VEC3:
+    case LOCAL_GL_INT_VEC4:
+        return setterType == LOCAL_GL_INT;
+
+    case LOCAL_GL_UNSIGNED_INT:
+    case LOCAL_GL_UNSIGNED_INT_VEC2:
+    case LOCAL_GL_UNSIGNED_INT_VEC3:
+    case LOCAL_GL_UNSIGNED_INT_VEC4:
+        return setterType == LOCAL_GL_UNSIGNED_INT;
+
+        /* bool can be set via any function: 0, 0.0f -> FALSE, _ -> TRUE */
+    case LOCAL_GL_BOOL:
+    case LOCAL_GL_BOOL_VEC2:
+    case LOCAL_GL_BOOL_VEC3:
+    case LOCAL_GL_BOOL_VEC4:
+        return (setterType == LOCAL_GL_INT   ||
+                setterType == LOCAL_GL_FLOAT ||
+                setterType == LOCAL_GL_UNSIGNED_INT);
+
+    case LOCAL_GL_FLOAT_MAT2:
+    case LOCAL_GL_FLOAT_MAT3:
+    case LOCAL_GL_FLOAT_MAT4:
+    case LOCAL_GL_FLOAT_MAT2x3:
+    case LOCAL_GL_FLOAT_MAT2x4:
+    case LOCAL_GL_FLOAT_MAT3x2:
+    case LOCAL_GL_FLOAT_MAT3x4:
+    case LOCAL_GL_FLOAT_MAT4x2:
+    case LOCAL_GL_FLOAT_MAT4x3:
+        return setterType == LOCAL_GL_FLOAT;
+
+        /* Samplers can only be set via Uniform1i */
+    case LOCAL_GL_SAMPLER_2D:
+    case LOCAL_GL_SAMPLER_3D:
+    case LOCAL_GL_SAMPLER_CUBE:
+    case LOCAL_GL_SAMPLER_2D_SHADOW:
+    case LOCAL_GL_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW:
+    case LOCAL_GL_SAMPLER_CUBE_SHADOW:
+
+    case LOCAL_GL_INT_SAMPLER_2D:
+    case LOCAL_GL_INT_SAMPLER_3D:
+    case LOCAL_GL_INT_SAMPLER_CUBE:
+    case LOCAL_GL_INT_SAMPLER_2D_ARRAY:
+
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_3D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
+        return setterType == LOCAL_GL_INT;
+
+    default:
+        MOZ_CRASH("GFX: Bad `uniformType`.");
+    }
+}
+
+bool
+WebGLUniformLocation::ValidateSizeAndType(uint8_t setterElemSize, GLenum setterType,
+                                          const char* funcName) const
+{
+    MOZ_ASSERT(mLinkInfo);
+
+    const auto& uniformElemSize = mInfo->mActiveInfo->mElemSize;
+    if (setterElemSize != uniformElemSize) {
+        mContext->ErrorInvalidOperation("%s: Function used differs from uniform size: %i",
+                                        funcName, uniformElemSize);
+        return false;
+    }
+
+    const auto& uniformElemType = mInfo->mActiveInfo->mElemType;
+    if (!IsUniformSetterTypeValid(setterType, uniformElemType)) {
+        mContext->ErrorInvalidOperation("%s: Function used is incompatible with uniform"
+                                        " type: %i",
+                                        funcName, uniformElemType);
+        return false;
+    }
+
+    return true;
+}
+
+bool
+WebGLUniformLocation::ValidateArrayLength(uint8_t setterElemSize, size_t setterArraySize,
+                                          const char* funcName) const
+{
+    MOZ_ASSERT(mLinkInfo);
+
+    if (setterArraySize == 0 ||
+        setterArraySize % setterElemSize)
+    {
+        mContext->ErrorInvalidValue("%s: Expected an array of length a multiple of %d,"
+                                    " got an array of length %d.",
+                                    funcName, setterElemSize, setterArraySize);
+        return false;
+    }
+
+    /* GLES 2.0.25, Section 2.10, p38
+     *   When loading `N` elements starting at an arbitrary position `k` in a uniform
+     *   declared as an array, elements `k` through `k + N - 1` in the array will be
+     *   replaced with the new values. Values for any array element that exceeds the
+     *   highest array element index used, as reported by `GetActiveUniform`, will be
+     *   ignored by GL.
+     */
+    if (!mInfo->mActiveInfo->mIsArray &&
+        setterArraySize != setterElemSize)
+    {
+        mContext->ErrorInvalidOperation("%s: Expected an array of length exactly %d"
+                                        " (since this uniform is not an array uniform),"
+                                        " got an array of length %d.",
+                                        funcName, setterElemSize, setterArraySize);
+        return false;
+    }
+
+    return true;
+}
+
+JS::Value
+WebGLUniformLocation::GetUniform(JSContext* js) const
+{
+    MOZ_ASSERT(mLinkInfo);
+
+    const uint8_t elemSize = mInfo->mActiveInfo->mElemSize;
+    static const uint8_t kMaxElemSize = 16;
+    MOZ_ASSERT(elemSize <= kMaxElemSize);
+
+    GLuint prog = mLinkInfo->prog->mGLName;
+
+    gl::GLContext* gl = mContext->GL();
+    gl->MakeCurrent();
+
+    switch (mInfo->mActiveInfo->mElemType) {
+    case LOCAL_GL_INT:
+    case LOCAL_GL_INT_VEC2:
+    case LOCAL_GL_INT_VEC3:
+    case LOCAL_GL_INT_VEC4:
+    case LOCAL_GL_SAMPLER_2D:
+    case LOCAL_GL_SAMPLER_3D:
+    case LOCAL_GL_SAMPLER_CUBE:
+    case LOCAL_GL_SAMPLER_2D_SHADOW:
+    case LOCAL_GL_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW:
+    case LOCAL_GL_SAMPLER_CUBE_SHADOW:
+    case LOCAL_GL_INT_SAMPLER_2D:
+    case LOCAL_GL_INT_SAMPLER_3D:
+    case LOCAL_GL_INT_SAMPLER_CUBE:
+    case LOCAL_GL_INT_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_3D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
+        {
+            GLint buffer[kMaxElemSize] = {0};
+            gl->fGetUniformiv(prog, mLoc, buffer);
+
+            if (elemSize == 1)
+                return JS::Int32Value(buffer[0]);
+
+            JSObject* obj = dom::Int32Array::Create(js, mContext, elemSize, buffer);
+            if (!obj) {
+                mContext->ErrorOutOfMemory("getUniform: Out of memory.");
+                return JS::NullValue();
+            }
+            return JS::ObjectOrNullValue(obj);
+        }
+
+    case LOCAL_GL_BOOL:
+    case LOCAL_GL_BOOL_VEC2:
+    case LOCAL_GL_BOOL_VEC3:
+    case LOCAL_GL_BOOL_VEC4:
+        {
+            GLint buffer[kMaxElemSize] = {0};
+            gl->fGetUniformiv(prog, mLoc, buffer);
+
+            if (elemSize == 1)
+                return JS::BooleanValue(buffer[0]);
+
+            bool boolBuffer[kMaxElemSize];
+            for (uint8_t i = 0; i < kMaxElemSize; i++)
+                boolBuffer[i] = buffer[i];
+
+            JS::RootedValue val(js);
+            // Be careful: we don't want to convert all of |uv|!
+            if (!dom::ToJSValue(js, boolBuffer, elemSize, &val)) {
+                mContext->ErrorOutOfMemory("getUniform: Out of memory.");
+                return JS::NullValue();
+            }
+            return val;
+        }
+
+    case LOCAL_GL_FLOAT:
+    case LOCAL_GL_FLOAT_VEC2:
+    case LOCAL_GL_FLOAT_VEC3:
+    case LOCAL_GL_FLOAT_VEC4:
+    case LOCAL_GL_FLOAT_MAT2:
+    case LOCAL_GL_FLOAT_MAT3:
+    case LOCAL_GL_FLOAT_MAT4:
+    case LOCAL_GL_FLOAT_MAT2x3:
+    case LOCAL_GL_FLOAT_MAT2x4:
+    case LOCAL_GL_FLOAT_MAT3x2:
+    case LOCAL_GL_FLOAT_MAT3x4:
+    case LOCAL_GL_FLOAT_MAT4x2:
+    case LOCAL_GL_FLOAT_MAT4x3:
+        {
+            GLfloat buffer[16] = {0.0f};
+            gl->fGetUniformfv(prog, mLoc, buffer);
+
+            if (elemSize == 1)
+                return JS::DoubleValue(buffer[0]);
+
+            JSObject* obj = dom::Float32Array::Create(js, mContext, elemSize, buffer);
+            if (!obj) {
+                mContext->ErrorOutOfMemory("getUniform: Out of memory.");
+                return JS::NullValue();
+            }
+            return JS::ObjectOrNullValue(obj);
+        }
+
+    case LOCAL_GL_UNSIGNED_INT:
+    case LOCAL_GL_UNSIGNED_INT_VEC2:
+    case LOCAL_GL_UNSIGNED_INT_VEC3:
+    case LOCAL_GL_UNSIGNED_INT_VEC4:
+        {
+            GLuint buffer[kMaxElemSize] = {0};
+            gl->fGetUniformuiv(prog, mLoc, buffer);
+
+            if (elemSize == 1)
+                return JS::DoubleValue(buffer[0]); // This is Double because only Int32 is special cased.
+
+            JSObject* obj = dom::Uint32Array::Create(js, mContext, elemSize, buffer);
+            if (!obj) {
+                mContext->ErrorOutOfMemory("getUniform: Out of memory.");
+                return JS::NullValue();
+            }
+            return JS::ObjectOrNullValue(obj);
+        }
+
+    default:
+        MOZ_CRASH("GFX: Invalid elemType.");
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+JSObject*
+WebGLUniformLocation::WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto)
+{
+    return dom::WebGLUniformLocationBinding::Wrap(js, this, givenProto);
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLUniformLocation)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLUniformLocation, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLUniformLocation, Release)
+
+} // namespace mozilla