kc3-lang/angle/src/libANGLE/renderer/null/ContextNULL.h

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• Hash : a825eb70
  Author :
  Date : 2019-11-21T11:37:17
  

  Implement BaseVertex draw calls for Vulkan, OpenGL, NULL contexts.
  
  This adds support for the following functions:
  
  - glDrawElementsBaseVertex
  - glDrawRangeElementsBaseVertex
  - glDrawElementsInstancedBaseVertex
  
  Bug: angleproject:3582
  Bug: angleproject:3402
  Bug: angleproject:4166
  Change-Id: I83770f62e3a918c0965fd4ca8c7d9e598b8b4154
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1929083
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/null/ContextNULL.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.
  //
  // ContextNULL.h:
  //    Defines the class interface for ContextNULL, implementing ContextImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_NULL_CONTEXTNULL_H_
  #define LIBANGLE_RENDERER_NULL_CONTEXTNULL_H_
  
  #include "libANGLE/renderer/ContextImpl.h"
  
  namespace rx
  {
  
  class AllocationTrackerNULL : angle::NonCopyable
  {
    public:
      explicit AllocationTrackerNULL(size_t maxTotalAllocationSize);
      ~AllocationTrackerNULL();
  
      // Check if it is possible to change an allocation from oldSize to newSize.  If it is possible,
      // the allocation is registered and true is returned else false is returned.
      bool updateMemoryAllocation(size_t oldSize, size_t newSize);
  
    private:
      size_t mAllocatedBytes;
      const size_t mMaxBytes;
  };
  
  class ContextNULL : public ContextImpl
  {
    public:
      ContextNULL(const gl::State &state,
                  gl::ErrorSet *errorSet,
                  AllocationTrackerNULL *allocationTracker);
      ~ContextNULL() override;
  
      angle::Result initialize() override;
  
      // Flush and finish.
      angle::Result flush(const gl::Context *context) override;
      angle::Result finish(const gl::Context *context) override;
  
      // Drawing methods.
      angle::Result drawArrays(const gl::Context *context,
                               gl::PrimitiveMode mode,
                               GLint first,
                               GLsizei count) override;
      angle::Result drawArraysInstanced(const gl::Context *context,
                                        gl::PrimitiveMode mode,
                                        GLint first,
                                        GLsizei count,
                                        GLsizei instanceCount) override;
      angle::Result drawArraysInstancedBaseInstance(const gl::Context *context,
                                                    gl::PrimitiveMode mode,
                                                    GLint first,
                                                    GLsizei count,
                                                    GLsizei instanceCount,
                                                    GLuint baseInstance) override;
  
      angle::Result drawElements(const gl::Context *context,
                                 gl::PrimitiveMode mode,
                                 GLsizei count,
                                 gl::DrawElementsType type,
                                 const void *indices) override;
      angle::Result drawElementsBaseVertex(const gl::Context *context,
                                           gl::PrimitiveMode mode,
                                           GLsizei count,
                                           gl::DrawElementsType type,
                                           const void *indices,
                                           GLint baseVertex) override;
      angle::Result drawElementsInstanced(const gl::Context *context,
                                          gl::PrimitiveMode mode,
                                          GLsizei count,
                                          gl::DrawElementsType type,
                                          const void *indices,
                                          GLsizei instances) override;
      angle::Result drawElementsInstancedBaseVertex(const gl::Context *context,
                                                    gl::PrimitiveMode mode,
                                                    GLsizei count,
                                                    gl::DrawElementsType type,
                                                    const void *indices,
                                                    GLsizei instances,
                                                    GLint baseVertex) override;
      angle::Result drawElementsInstancedBaseVertexBaseInstance(const gl::Context *context,
                                                                gl::PrimitiveMode mode,
                                                                GLsizei count,
                                                                gl::DrawElementsType type,
                                                                const void *indices,
                                                                GLsizei instances,
                                                                GLint baseVertex,
                                                                GLuint baseInstance) override;
      angle::Result drawRangeElements(const gl::Context *context,
                                      gl::PrimitiveMode mode,
                                      GLuint start,
                                      GLuint end,
                                      GLsizei count,
                                      gl::DrawElementsType type,
                                      const void *indices) override;
      angle::Result drawRangeElementsBaseVertex(const gl::Context *context,
                                                gl::PrimitiveMode mode,
                                                GLuint start,
                                                GLuint end,
                                                GLsizei count,
                                                gl::DrawElementsType type,
                                                const void *indices,
                                                GLint baseVertex) override;
      angle::Result drawArraysIndirect(const gl::Context *context,
                                       gl::PrimitiveMode mode,
                                       const void *indirect) override;
      angle::Result drawElementsIndirect(const gl::Context *context,
                                         gl::PrimitiveMode mode,
                                         gl::DrawElementsType type,
                                         const void *indirect) override;
  
      // CHROMIUM_path_rendering path drawing methods.
      void stencilFillPath(const gl::Path *path, GLenum fillMode, GLuint mask) override;
      void stencilStrokePath(const gl::Path *path, GLint reference, GLuint mask) override;
      void coverFillPath(const gl::Path *path, GLenum coverMode) override;
      void coverStrokePath(const gl::Path *path, GLenum coverMode) override;
      void stencilThenCoverFillPath(const gl::Path *path,
                                    GLenum fillMode,
                                    GLuint mask,
                                    GLenum coverMode) override;
  
      void stencilThenCoverStrokePath(const gl::Path *path,
                                      GLint reference,
                                      GLuint mask,
                                      GLenum coverMode) override;
  
      void coverFillPathInstanced(const std::vector<gl::Path *> &paths,
                                  GLenum coverMode,
                                  GLenum transformType,
                                  const GLfloat *transformValues) override;
      void coverStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                    GLenum coverMode,
                                    GLenum transformType,
                                    const GLfloat *transformValues) override;
      void stencilFillPathInstanced(const std::vector<gl::Path *> &paths,
                                    GLenum fillMode,
                                    GLuint mask,
                                    GLenum transformType,
                                    const GLfloat *transformValues) override;
      void stencilStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                      GLint reference,
                                      GLuint mask,
                                      GLenum transformType,
                                      const GLfloat *transformValues) override;
      void stencilThenCoverFillPathInstanced(const std::vector<gl::Path *> &paths,
                                             GLenum coverMode,
                                             GLenum fillMode,
                                             GLuint mask,
                                             GLenum transformType,
                                             const GLfloat *transformValues) override;
      void stencilThenCoverStrokePathInstanced(const std::vector<gl::Path *> &paths,
                                               GLenum coverMode,
                                               GLint reference,
                                               GLuint mask,
                                               GLenum transformType,
                                               const GLfloat *transformValues) override;
  
      // Device loss
      gl::GraphicsResetStatus getResetStatus() override;
  
      // Vendor and description strings.
      std::string getVendorString() const override;
      std::string getRendererDescription() const override;
  
      // EXT_debug_marker
      void insertEventMarker(GLsizei length, const char *marker) override;
      void pushGroupMarker(GLsizei length, const char *marker) override;
      void popGroupMarker() override;
  
      // KHR_debug
      void pushDebugGroup(GLenum source, GLuint id, const std::string &message) override;
      void popDebugGroup() override;
  
      // State sync with dirty bits.
      angle::Result syncState(const gl::Context *context,
                              const gl::State::DirtyBits &dirtyBits,
                              const gl::State::DirtyBits &bitMask) override;
  
      // Disjoint timer queries
      GLint getGPUDisjoint() override;
      GLint64 getTimestamp() override;
  
      // Context switching
      angle::Result onMakeCurrent(const gl::Context *context) override;
  
      // Native capabilities, unmodified by gl::Context.
      gl::Caps getNativeCaps() const override;
      const gl::TextureCapsMap &getNativeTextureCaps() const override;
      const gl::Extensions &getNativeExtensions() const override;
      const gl::Limitations &getNativeLimitations() const override;
  
      // Shader creation
      CompilerImpl *createCompiler() override;
      ShaderImpl *createShader(const gl::ShaderState &data) override;
      ProgramImpl *createProgram(const gl::ProgramState &data) override;
  
      // Framebuffer creation
      FramebufferImpl *createFramebuffer(const gl::FramebufferState &data) override;
  
      // Texture creation
      TextureImpl *createTexture(const gl::TextureState &state) override;
  
      // Renderbuffer creation
      RenderbufferImpl *createRenderbuffer(const gl::RenderbufferState &state) override;
  
      // Buffer creation
      BufferImpl *createBuffer(const gl::BufferState &state) override;
  
      // Vertex Array creation
      VertexArrayImpl *createVertexArray(const gl::VertexArrayState &data) override;
  
      // Query and Fence creation
      QueryImpl *createQuery(gl::QueryType type) override;
      FenceNVImpl *createFenceNV() override;
      SyncImpl *createSync() override;
  
      // Transform Feedback creation
      TransformFeedbackImpl *createTransformFeedback(
          const gl::TransformFeedbackState &state) override;
  
      // Sampler object creation
      SamplerImpl *createSampler(const gl::SamplerState &state) override;
  
      // Program Pipeline object creation
      ProgramPipelineImpl *createProgramPipeline(const gl::ProgramPipelineState &data) override;
  
      std::vector<PathImpl *> createPaths(GLsizei range) override;
  
      // Memory object creation.
      MemoryObjectImpl *createMemoryObject() override;
  
      // Semaphore creation.
      SemaphoreImpl *createSemaphore() override;
  
      // Overlay creation.
      OverlayImpl *createOverlay(const gl::OverlayState &state) override;
  
      angle::Result dispatchCompute(const gl::Context *context,
                                    GLuint numGroupsX,
                                    GLuint numGroupsY,
                                    GLuint numGroupsZ) override;
      angle::Result dispatchComputeIndirect(const gl::Context *context, GLintptr indirect) override;
  
      angle::Result memoryBarrier(const gl::Context *context, GLbitfield barriers) override;
      angle::Result memoryBarrierByRegion(const gl::Context *context, GLbitfield barriers) override;
  
      void handleError(GLenum errorCode,
                       const char *message,
                       const char *file,
                       const char *function,
                       unsigned int line);
  
    private:
      gl::Caps mCaps;
      gl::TextureCapsMap mTextureCaps;
      gl::Extensions mExtensions;
      gl::Limitations mLimitations;
  
      AllocationTrackerNULL *mAllocationTracker;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_NULL_CONTEXTNULL_H_
  

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