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

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• Author : Chris Dalton
  Date : 2022-09-26 23:56:34
  Hash : a81679bc
  Message : Support EXT_shader_framebuffer_fetch on GLES All the frontend functionality for EXT_shader_framebuffer_fetch is already present, but only supported on Vulkan. This change wires it up for the native GLES backend as well. Bug: angleproject:7279 Bug: angleproject:7703 Change-Id: Ie1fce79e08a78662c8af65d33f3d8417c96cf58e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3920577 Commit-Queue: Chris Dalton <chris@rive.app> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

• src/libANGLE/renderer/gl/RendererGL.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.
  //
  
  // RendererGL.h: Defines the class interface for RendererGL.
  
  #ifndef LIBANGLE_RENDERER_GL_RENDERERGL_H_
  #define LIBANGLE_RENDERER_GL_RENDERERGL_H_
  
  #include <list>
  #include <mutex>
  
  #include "libANGLE/Caps.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/Version.h"
  #include "libANGLE/renderer/gl/renderergl_utils.h"
  #include "platform/FeaturesGL_autogen.h"
  
  namespace angle
  {
  struct FrontendFeatures;
  }  // namespace angle
  
  namespace gl
  {
  struct IndexRange;
  class Path;
  class State;
  }  // namespace gl
  
  namespace egl
  {
  class AttributeMap;
  }  // namespace egl
  
  namespace sh
  {
  struct BlockMemberInfo;
  }  // namespace sh
  
  namespace rx
  {
  class BlitGL;
  class ClearMultiviewGL;
  class ContextImpl;
  class DisplayGL;
  class FunctionsGL;
  class RendererGL;
  class StateManagerGL;
  
  // WorkerContext wraps a native GL context shared from the main context. It is used by the workers
  // for khr_parallel_shader_compile.
  class WorkerContext : angle::NonCopyable
  {
    public:
      virtual ~WorkerContext() {}
  
      virtual bool makeCurrent()   = 0;
      virtual void unmakeCurrent() = 0;
  };
  
  class [[nodiscard]] ScopedWorkerContextGL
  {
    public:
      ScopedWorkerContextGL(RendererGL *renderer, std::string *infoLog);
      ~ScopedWorkerContextGL();
  
      bool operator()() const;
  
    private:
      RendererGL *mRenderer = nullptr;
      bool mValid           = false;
  };
  
  class RendererGL : angle::NonCopyable
  {
    public:
      RendererGL(std::unique_ptr<FunctionsGL> functions,
                 const egl::AttributeMap &attribMap,
                 DisplayGL *display);
      virtual ~RendererGL();
  
      angle::Result flush();
      angle::Result finish();
  
      gl::GraphicsResetStatus getResetStatus();
  
      // EXT_debug_marker
      void insertEventMarker(GLsizei length, const char *marker);
      void pushGroupMarker(GLsizei length, const char *marker);
      void popGroupMarker();
  
      // KHR_debug
      void pushDebugGroup(GLenum source, GLuint id, const std::string &message);
      void popDebugGroup();
  
      GLint getGPUDisjoint();
      GLint64 getTimestamp();
  
      const gl::Version &getMaxSupportedESVersion() const;
      const FunctionsGL *getFunctions() const { return mFunctions.get(); }
      StateManagerGL *getStateManager() const { return mStateManager; }
      const angle::FeaturesGL &getFeatures() const { return mFeatures; }
      BlitGL *getBlitter() const { return mBlitter; }
      ClearMultiviewGL *getMultiviewClearer() const { return mMultiviewClearer; }
  
      MultiviewImplementationTypeGL getMultiviewImplementationType() const;
      const gl::Caps &getNativeCaps() const;
      const gl::TextureCapsMap &getNativeTextureCaps() const;
      const gl::Extensions &getNativeExtensions() const;
      const gl::Limitations &getNativeLimitations() const;
      ShPixelLocalStorageType getNativePixelLocalStorageType() const;
      void initializeFrontendFeatures(angle::FrontendFeatures *features) const;
  
      angle::Result dispatchCompute(const gl::Context *context,
                                    GLuint numGroupsX,
                                    GLuint numGroupsY,
                                    GLuint numGroupsZ);
      angle::Result dispatchComputeIndirect(const gl::Context *context, GLintptr indirect);
  
      angle::Result memoryBarrier(GLbitfield barriers);
      angle::Result memoryBarrierByRegion(GLbitfield barriers);
  
      void framebufferFetchBarrier();
  
      bool bindWorkerContext(std::string *infoLog);
      void unbindWorkerContext();
      // Checks if the driver has the KHR_parallel_shader_compile or ARB_parallel_shader_compile
      // extension.
      bool hasNativeParallelCompile();
      void setMaxShaderCompilerThreads(GLuint count);
  
      static unsigned int getMaxWorkerContexts();
  
      void setNeedsFlushBeforeDeleteTextures();
      void flushIfNecessaryBeforeDeleteTextures();
  
      void markWorkSubmitted();
  
      void handleGPUSwitch();
  
    protected:
      virtual WorkerContext *createWorkerContext(std::string *infoLog) = 0;
  
    private:
      void ensureCapsInitialized() const;
      void generateCaps(gl::Caps *outCaps,
                        gl::TextureCapsMap *outTextureCaps,
                        gl::Extensions *outExtensions,
                        gl::Limitations *outLimitations) const;
  
      mutable gl::Version mMaxSupportedESVersion;
  
      std::unique_ptr<FunctionsGL> mFunctions;
      StateManagerGL *mStateManager;
  
      BlitGL *mBlitter;
      ClearMultiviewGL *mMultiviewClearer;
  
      bool mUseDebugOutput;
  
      mutable bool mCapsInitialized;
      mutable gl::Caps mNativeCaps;
      mutable gl::TextureCapsMap mNativeTextureCaps;
      mutable gl::Extensions mNativeExtensions;
      mutable gl::Limitations mNativeLimitations;
      mutable MultiviewImplementationTypeGL mMultiviewImplementationType;
  
      bool mWorkDoneSinceLastFlush = false;
  
      // The thread-to-context mapping for the currently active worker threads.
      angle::HashMap<uint64_t, std::unique_ptr<WorkerContext>> mCurrentWorkerContexts;
      // The worker contexts available to use.
      std::list<std::unique_ptr<WorkerContext>> mWorkerContextPool;
      // Protect the concurrent accesses to worker contexts.
      std::mutex mWorkerMutex;
  
      bool mNativeParallelCompileEnabled;
  
      angle::FeaturesGL mFeatures;
  
      // Workaround for anglebug.com/4267
      bool mNeedsFlushBeforeDeleteTextures;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_RENDERERGL_H_