kc3-lang/angle/src/libANGLE/renderer/gl/SurfaceGL.h

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• Hash : b3eeb2a4
  Author :
  Date : 2019-08-05T17:02:43
  

  Emulate RGB textures using BGRX IOSurfaces.
  
  When the user requests an IOSurface Pbuffer with an RGB format, emulate the
  missing alpha channel by clearing it to 1.0 and masking reads and writes in
  shaders.
  
  BUG=angleproject:3766
  
  Change-Id: I58c992bf641d9ece0f923603f32640615150e4f3
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1737437
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  

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• src/libANGLE/renderer/gl/SurfaceGL.h

• //
  // Copyright 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.
  //
  
  // SurfaceGL.h: Defines the class interface for SurfaceGL.
  
  #ifndef LIBANGLE_RENDERER_GL_SURFACEGL_H_
  #define LIBANGLE_RENDERER_GL_SURFACEGL_H_
  
  #include "libANGLE/renderer/SurfaceImpl.h"
  
  namespace rx
  {
  
  class SurfaceGL : public SurfaceImpl
  {
    public:
      SurfaceGL(const egl::SurfaceState &state);
      ~SurfaceGL() override;
  
      FramebufferImpl *createDefaultFramebuffer(const gl::Context *context,
                                                const gl::FramebufferState &data) override;
      egl::Error getSyncValues(EGLuint64KHR *ust, EGLuint64KHR *msc, EGLuint64KHR *sbc) override;
  
      angle::Result initializeContents(const gl::Context *context,
                                       const gl::ImageIndex &imageIndex) override;
  
      virtual bool hasEmulatedAlphaChannel() const;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_SURFACEGL_H_
  

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