kc3-lang/angle/src/libANGLE/renderer/ContextImpl.h

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• Hash : cdecd97c
  Author :
  Date : 2019-06-25T14:22:41
  

  Add Draw base vertex and base instance function entrypoints
  
  Split from https://chromium-review.googlesource.com/c/angle/angle/+/1705035/27
  
  This patch adds entrypoints glDrawArraysInstancedBaseInstanceANGLE,
  glDrawElementsInstancedBaseVertexBaseInstanceANGLE,
  glMultiDrawArraysInstancedBaseInstanceANGLE,
  and glMultiDrawElementsInstancedBaseVertexBaseInstanceANGLE
  
  Implementation will come in a later separate patch.
  
  Bug: chromium:891861, angleproject:3402
  Change-Id: I18e19b850cddd79be4798b9ae7efe0680a050c7f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1750125
  Commit-Queue: Shrek Shao <shrekshao@google.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/ContextImpl.h

• //
  // Copyright 2016 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.
  //
  // ContextImpl:
  //   Implementation-specific functionality associated with a GL Context.
  //
  
  #ifndef LIBANGLE_RENDERER_CONTEXTIMPL_H_
  #define LIBANGLE_RENDERER_CONTEXTIMPL_H_
  
  #include <vector>
  
  #include "common/angleutils.h"
  #include "libANGLE/State.h"
  #include "libANGLE/renderer/GLImplFactory.h"
  
  namespace gl
  {
  class ErrorSet;
  class MemoryProgramCache;
  class Path;
  class Semaphore;
  struct Workarounds;
  }  // namespace gl
  
  namespace rx
  {
  class ContextImpl : public GLImplFactory
  {
    public:
      ContextImpl(const gl::State &state, gl::ErrorSet *errorSet);
      ~ContextImpl() override;
  
      virtual void onDestroy(const gl::Context *context) {}
  
      virtual angle::Result initialize() = 0;
  
      // Flush and finish.
      virtual angle::Result flush(const gl::Context *context)  = 0;
      virtual angle::Result finish(const gl::Context *context) = 0;
  
      // Drawing methods.
      virtual angle::Result drawArrays(const gl::Context *context,
                                       gl::PrimitiveMode mode,
                                       GLint first,
                                       GLsizei count)                  = 0;
      virtual angle::Result drawArraysInstanced(const gl::Context *context,
                                                gl::PrimitiveMode mode,
                                                GLint first,
                                                GLsizei count,
                                                GLsizei instanceCount) = 0;
      // Necessary for Vulkan since gl_InstanceIndex includes baseInstance
      virtual angle::Result drawArraysInstancedBaseInstance(const gl::Context *context,
                                                            gl::PrimitiveMode mode,
                                                            GLint first,
                                                            GLsizei count,
                                                            GLsizei instanceCount,
                                                            GLuint baseInstance) = 0;
  
      virtual angle::Result drawElements(const gl::Context *context,
                                         gl::PrimitiveMode mode,
                                         GLsizei count,
                                         gl::DrawElementsType type,
                                         const void *indices)                                = 0;
      virtual angle::Result drawElementsInstanced(const gl::Context *context,
                                                  gl::PrimitiveMode mode,
                                                  GLsizei count,
                                                  gl::DrawElementsType type,
                                                  const void *indices,
                                                  GLsizei instances)                         = 0;
      virtual angle::Result drawElementsInstancedBaseVertexBaseInstance(const gl::Context *context,
                                                                        gl::PrimitiveMode mode,
                                                                        GLsizei count,
                                                                        gl::DrawElementsType type,
                                                                        const void *indices,
                                                                        GLsizei instances,
                                                                        GLint baseVertex,
                                                                        GLuint baseInstance) = 0;
      virtual angle::Result drawRangeElements(const gl::Context *context,
                                              gl::PrimitiveMode mode,
                                              GLuint start,
                                              GLuint end,
                                              GLsizei count,
                                              gl::DrawElementsType type,
                                              const void *indices)                           = 0;
  
      virtual angle::Result drawArraysIndirect(const gl::Context *context,
                                               gl::PrimitiveMode mode,
                                               const void *indirect)   = 0;
      virtual angle::Result drawElementsIndirect(const gl::Context *context,
                                                 gl::PrimitiveMode mode,
                                                 gl::DrawElementsType type,
                                                 const void *indirect) = 0;
  
      // CHROMIUM_path_rendering path drawing methods.
      virtual void stencilFillPath(const gl::Path *path, GLenum fillMode, GLuint mask);
      virtual void stencilStrokePath(const gl::Path *path, GLint reference, GLuint mask);
      virtual void coverFillPath(const gl::Path *path, GLenum coverMode);
      virtual void coverStrokePath(const gl::Path *path, GLenum coverMode);
      virtual void stencilThenCoverFillPath(const gl::Path *path,
                                            GLenum fillMode,
                                            GLuint mask,
                                            GLenum coverMode);
  
      virtual void stencilThenCoverStrokePath(const gl::Path *path,
                                              GLint reference,
                                              GLuint mask,
                                              GLenum coverMode);
  
      virtual void coverFillPathInstanced(const std::vector<gl::Path *> &paths,
                                          GLenum coverMode,
                                          GLenum transformType,
                                          const GLfloat *transformValues);
      virtual void coverStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                            GLenum coverMode,
                                            GLenum transformType,
                                            const GLfloat *transformValues);
      virtual void stencilFillPathInstanced(const std::vector<gl::Path *> &paths,
                                            GLenum fillMode,
                                            GLuint mask,
                                            GLenum transformType,
                                            const GLfloat *transformValues);
      virtual void stencilStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                              GLint reference,
                                              GLuint mask,
                                              GLenum transformType,
                                              const GLfloat *transformValues);
      virtual void stencilThenCoverFillPathInstanced(const std::vector<gl::Path *> &paths,
                                                     GLenum coverMode,
                                                     GLenum fillMode,
                                                     GLuint mask,
                                                     GLenum transformType,
                                                     const GLfloat *transformValues);
      virtual void stencilThenCoverStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                                       GLenum coverMode,
                                                       GLint reference,
                                                       GLuint mask,
                                                       GLenum transformType,
                                                       const GLfloat *transformValues);
  
      // Device loss
      virtual gl::GraphicsResetStatus getResetStatus() = 0;
  
      // Vendor and description strings.
      virtual std::string getVendorString() const        = 0;
      virtual std::string getRendererDescription() const = 0;
  
      // EXT_debug_marker
      virtual void insertEventMarker(GLsizei length, const char *marker) = 0;
      virtual void pushGroupMarker(GLsizei length, const char *marker)   = 0;
      virtual void popGroupMarker()                                      = 0;
  
      // KHR_debug
      virtual void pushDebugGroup(GLenum source, GLuint id, const std::string &message) = 0;
      virtual void popDebugGroup()                                                      = 0;
  
      // KHR_parallel_shader_compile
      virtual void setMaxShaderCompilerThreads(GLuint count) {}
  
      // GL_ANGLE_texture_storage_external
      virtual void invalidateTexture(gl::TextureType target);
  
      // State sync with dirty bits.
      virtual angle::Result syncState(const gl::Context *context,
                                      const gl::State::DirtyBits &dirtyBits,
                                      const gl::State::DirtyBits &bitMask) = 0;
  
      // Disjoint timer queries
      virtual GLint getGPUDisjoint() = 0;
      virtual GLint64 getTimestamp() = 0;
  
      // Context switching
      virtual angle::Result onMakeCurrent(const gl::Context *context) = 0;
      virtual angle::Result onUnMakeCurrent(const gl::Context *context);
  
      // Native capabilities, unmodified by gl::Context.
      virtual gl::Caps getNativeCaps() const                         = 0;
      virtual const gl::TextureCapsMap &getNativeTextureCaps() const = 0;
      virtual const gl::Extensions &getNativeExtensions() const      = 0;
      virtual const gl::Limitations &getNativeLimitations() const    = 0;
  
      virtual angle::Result dispatchCompute(const gl::Context *context,
                                            GLuint numGroupsX,
                                            GLuint numGroupsY,
                                            GLuint numGroupsZ)         = 0;
      virtual angle::Result dispatchComputeIndirect(const gl::Context *context,
                                                    GLintptr indirect) = 0;
  
      virtual angle::Result memoryBarrier(const gl::Context *context, GLbitfield barriers) = 0;
      virtual angle::Result memoryBarrierByRegion(const gl::Context *context,
                                                  GLbitfield barriers)                     = 0;
  
      const gl::State &getState() { return mState; }
      int getClientMajorVersion() const { return mState.getClientMajorVersion(); }
      int getClientMinorVersion() const { return mState.getClientMinorVersion(); }
      const gl::Caps &getCaps() const { return mState.getCaps(); }
      const gl::TextureCapsMap &getTextureCaps() const { return mState.getTextureCaps(); }
      const gl::Extensions &getExtensions() const { return mState.getExtensions(); }
      const gl::Limitations &getLimitations() const { return mState.getLimitations(); }
  
      // A common GL driver behaviour is to trigger dynamic shader recompilation on a draw call,
      // based on the current render states. We store a mutable pointer to the program cache so
      // on draw calls we can store the refreshed shaders in the cache.
      void setMemoryProgramCache(gl::MemoryProgramCache *memoryProgramCache);
  
      void handleError(GLenum errorCode,
                       const char *message,
                       const char *file,
                       const char *function,
                       unsigned int line);
  
    protected:
      const gl::State &mState;
      gl::MemoryProgramCache *mMemoryProgramCache;
      gl::ErrorSet *mErrors;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_CONTEXTIMPL_H_
  

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