Add m-esr52 at 52.6.0

1 files changed, 201 insertions, 0 deletions

diff --git a/gfx/angle/src/libANGLE/FramebufferAttachment.h b/gfx/angle/src/libANGLE/FramebufferAttachment.h
new file mode 100755
index 000000000..41502737d
--- /dev/null
+++ b/gfx/angle/src/libANGLE/FramebufferAttachment.h
@@ -0,0 +1,201 @@
+//
+// Copyright (c) 2014 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.
+//
+
+// FramebufferAttachment.h: Defines the wrapper class gl::FramebufferAttachment, as well as the
+// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
+
+#ifndef LIBANGLE_FRAMEBUFFERATTACHMENT_H_
+#define LIBANGLE_FRAMEBUFFERATTACHMENT_H_
+
+#include "angle_gl.h"
+#include "common/angleutils.h"
+#include "libANGLE/angletypes.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/ImageIndex.h"
+#include "libANGLE/signal_utils.h"
+
+namespace egl
+{
+class Surface;
+}
+
+namespace rx
+{
+// An implementation-specific object associated with an attachment.
+
+class FramebufferAttachmentRenderTarget : angle::NonCopyable
+{
+  public:
+    FramebufferAttachmentRenderTarget() {}
+    virtual ~FramebufferAttachmentRenderTarget() {}
+};
+
+class FramebufferAttachmentObjectImpl;
+}
+
+namespace gl
+{
+class FramebufferAttachmentObject;
+struct Format;
+class Renderbuffer;
+class Texture;
+
+// FramebufferAttachment implements a GL framebuffer attachment.
+// Attachments are "light" containers, which store pointers to ref-counted GL objects.
+// We support GL texture (2D/3D/Cube/2D array) and renderbuffer object attachments.
+// Note: Our old naming scheme used the term "Renderbuffer" for both GL renderbuffers and for
+// framebuffer attachments, which confused their usage.
+
+class FramebufferAttachment final
+{
+  public:
+    FramebufferAttachment();
+
+    FramebufferAttachment(GLenum type,
+                          GLenum binding,
+                          const ImageIndex &textureIndex,
+                          FramebufferAttachmentObject *resource);
+
+    FramebufferAttachment(const FramebufferAttachment &other);
+    FramebufferAttachment &operator=(const FramebufferAttachment &other);
+
+    ~FramebufferAttachment();
+
+    // A framebuffer attachment points to one of three types of resources: Renderbuffers,
+    // Textures and egl::Surface. The "Target" struct indicates which part of the
+    // object an attachment references. For the three types:
+    //   - a Renderbuffer has a unique renderable target, and needs no target index
+    //   - a Texture has targets for every image and uses an ImageIndex
+    //   - a Surface has targets for Color and Depth/Stencil, and uses the attachment binding
+    class Target
+    {
+      public:
+        Target();
+        Target(GLenum binding, const ImageIndex &imageIndex);
+        Target(const Target &other);
+        Target &operator=(const Target &other);
+
+        GLenum binding() const { return mBinding; }
+        const ImageIndex &textureIndex() const { return mTextureIndex; }
+
+      private:
+        GLenum mBinding;
+        ImageIndex mTextureIndex;
+    };
+
+    void detach();
+    void attach(GLenum type,
+                GLenum binding,
+                const ImageIndex &textureIndex,
+                FramebufferAttachmentObject *resource);
+
+    // Helper methods
+    GLuint getRedSize() const;
+    GLuint getGreenSize() const;
+    GLuint getBlueSize() const;
+    GLuint getAlphaSize() const;
+    GLuint getDepthSize() const;
+    GLuint getStencilSize() const;
+    GLenum getComponentType() const;
+    GLenum getColorEncoding() const;
+
+    bool isTextureWithId(GLuint textureId) const { return mType == GL_TEXTURE && id() == textureId; }
+    bool isRenderbufferWithId(GLuint renderbufferId) const { return mType == GL_RENDERBUFFER && id() == renderbufferId; }
+
+    GLenum getBinding() const { return mTarget.binding(); }
+    GLuint id() const;
+
+    // These methods are only legal to call on Texture attachments
+    const ImageIndex &getTextureImageIndex() const;
+    GLenum cubeMapFace() const;
+    GLint mipLevel() const;
+    GLint layer() const;
+
+    // The size of the underlying resource the attachment points to. The 'depth' value will
+    // correspond to a 3D texture depth or the layer count of a 2D array texture. For Surfaces and
+    // Renderbuffers, it will always be 1.
+    Extents getSize() const;
+    const Format &getFormat() const;
+    GLsizei getSamples() const;
+    GLenum type() const { return mType; }
+    bool isAttached() const { return mType != GL_NONE; }
+
+    Renderbuffer *getRenderbuffer() const;
+    Texture *getTexture() const;
+    const egl::Surface *getSurface() const;
+
+    // "T" must be static_castable from FramebufferAttachmentRenderTarget
+    template <typename T>
+    gl::Error getRenderTarget(T **rtOut) const
+    {
+        // Cast through the pointer-to-pointer type
+        rx::FramebufferAttachmentRenderTarget *rtPtr = nullptr;
+        gl::Error error = getRenderTarget(&rtPtr);
+        *rtOut = static_cast<T*>(rtPtr);
+        return error;
+    }
+
+    bool operator==(const FramebufferAttachment &other) const;
+    bool operator!=(const FramebufferAttachment &other) const;
+
+  private:
+    gl::Error getRenderTarget(rx::FramebufferAttachmentRenderTarget **rtOut) const;
+
+    GLenum mType;
+    Target mTarget;
+    FramebufferAttachmentObject *mResource;
+};
+
+// A base class for objects that FBO Attachments may point to.
+class FramebufferAttachmentObject
+{
+  public:
+    FramebufferAttachmentObject() {}
+    virtual ~FramebufferAttachmentObject() {}
+
+    virtual Extents getAttachmentSize(const FramebufferAttachment::Target &target) const = 0;
+    virtual const Format &getAttachmentFormat(
+        const FramebufferAttachment::Target &target) const                                  = 0;
+    virtual GLsizei getAttachmentSamples(const FramebufferAttachment::Target &target) const = 0;
+
+    virtual void onAttach() = 0;
+    virtual void onDetach() = 0;
+    virtual GLuint getId() const = 0;
+
+    Error getAttachmentRenderTarget(const FramebufferAttachment::Target &target,
+                                    rx::FramebufferAttachmentRenderTarget **rtOut) const;
+
+    angle::BroadcastChannel *getDirtyChannel();
+
+  protected:
+    virtual rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const = 0;
+
+    angle::BroadcastChannel mDirtyChannel;
+};
+
+inline Extents FramebufferAttachment::getSize() const
+{
+    return mResource->getAttachmentSize(mTarget);
+}
+
+inline const Format &FramebufferAttachment::getFormat() const
+{
+    return mResource->getAttachmentFormat(mTarget);
+}
+
+inline GLsizei FramebufferAttachment::getSamples() const
+{
+    return mResource->getAttachmentSamples(mTarget);
+}
+
+inline gl::Error FramebufferAttachment::getRenderTarget(rx::FramebufferAttachmentRenderTarget **rtOut) const
+{
+    return mResource->getAttachmentRenderTarget(mTarget, rtOut);
+}
+
+} // namespace gl
+
+#endif // LIBANGLE_FRAMEBUFFERATTACHMENT_H_