kc3-lang/angle/src/libANGLE/renderer/gl/eagl/PbufferSurfaceEAGL.h

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• Hash : 79aa846e
  Author :
  Date : 2022-08-17T13:40:33
  

  Reland "Not recreate Framebuffer for eglMakeCurrent() call"
  
  This is a reland of commit bf9c815263455403e587a9d2b0fdb9fb8e964208
  
  Original change's description:
  > Not recreate Framebuffer for eglMakeCurrent() call
  >
  > Right now, in eglMakeCurrent() call, ANGLE always release the
  > default framebuffer object associated to the current context,
  > and create a new default framebuffer object for the new current
  > context. It impacts chrome performance, since chrome call
  > eglMakeCurrent() a lot. With this CL, the default framebuffer
  > will be created with gl::Context. When the surface is changed
  > by eglMakeCurrent() call, ANGLE will detach the previous surface
  > from the associated framebuffer, and attach the new surface to
  > the next current context's default framebuffer.
  >
  > Bug: chromium:1336126
  > Change-Id: Iaa747669250ae250245db383a716b4634df59ea4
  > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3827751
  > Commit-Queue: Peng Huang <penghuang@chromium.org>
  > Reviewed-by: Jamie Madill <jmadill@chromium.org>
  > Reviewed-by: Geoff Lang <geofflang@chromium.org>
  
  Bug: chromium:1336126
  Change-Id: Iade19004a4335ac7bc6ca176a3c14d34afff8c9e
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3877405
  Auto-Submit: Peng Huang <penghuang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/eagl/PbufferSurfaceEAGL.h

• //
  // Copyright 2020 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.
  //
  
  // PBufferSurfaceEAGL.h: an implementation of egl::Surface for PBuffers for the EAGL backend,
  //                       currently implemented using renderbuffers
  
  #ifndef LIBANGLE_RENDERER_GL_EAGL_PBUFFERSURFACEEAGL_H_
  #define LIBANGLE_RENDERER_GL_EAGL_PBUFFERSURFACEEAGL_H_
  
  #include "libANGLE/renderer/gl/SurfaceGL.h"
  
  namespace rx
  {
  
  class FunctionsGL;
  class RendererGL;
  class StateManagerGL;
  
  class PbufferSurfaceEAGL : public SurfaceGL
  {
    public:
      PbufferSurfaceEAGL(const egl::SurfaceState &state,
                         RendererGL *renderer,
                         EGLint width,
                         EGLint height);
      ~PbufferSurfaceEAGL() override;
  
      egl::Error initialize(const egl::Display *display) override;
      egl::Error makeCurrent(const gl::Context *context) override;
  
      egl::Error swap(const gl::Context *context) override;
      egl::Error postSubBuffer(const gl::Context *context,
                               EGLint x,
                               EGLint y,
                               EGLint width,
                               EGLint height) override;
      egl::Error querySurfacePointerANGLE(EGLint attribute, void **value) override;
      egl::Error bindTexImage(const gl::Context *context,
                              gl::Texture *texture,
                              EGLint buffer) override;
      egl::Error releaseTexImage(const gl::Context *context, EGLint buffer) override;
      void setSwapInterval(EGLint interval) override;
  
      EGLint getWidth() const override;
      EGLint getHeight() const override;
  
      EGLint isPostSubBufferSupported() const override;
      EGLint getSwapBehavior() const override;
  
      egl::Error attachToFramebuffer(const gl::Context *context,
                                     gl::Framebuffer *framebuffer) override;
      egl::Error detachFromFramebuffer(const gl::Context *context,
                                       gl::Framebuffer *framebuffer) override;
  
    private:
      unsigned mWidth;
      unsigned mHeight;
  
      // TODO(geofflang): Don't store these, they are potentially specific to a single GL context.
      // http://anglebug.com/2464
      const FunctionsGL *mFunctions;
      StateManagerGL *mStateManager;
  
      GLuint mColorRenderbuffer;
      GLuint mDSRenderbuffer;
      GLuint mFramebufferID;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_EAGL_PBUFFERSURFACEEAGL_H_
  

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