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

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• Hash : 70d79b76
  Author :
  Date : 2019-09-11T11:43:55
  

  GL: Add state validation functions to GL backend
  
  These functions validate that the driver's reported state matches
  ANGLE's internal state. Can be useful for debugging
  
  Bug: angleproject:3900
  Change-Id: I35d15e991986dcab114939c551a88549f09bd263
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1797254
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/VertexArrayGL.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.
  //
  
  // VertexArrayGL.h: Defines the class interface for VertexArrayGL.
  
  #ifndef LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  #define LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  
  #include "libANGLE/renderer/VertexArrayImpl.h"
  
  #include "common/mathutil.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/gl/ContextGL.h"
  
  namespace rx
  {
  
  class FunctionsGL;
  class StateManagerGL;
  
  class VertexArrayGL : public VertexArrayImpl
  {
    public:
      VertexArrayGL(const gl::VertexArrayState &data,
                    const FunctionsGL *functions,
                    StateManagerGL *stateManager);
      ~VertexArrayGL() override;
  
      void destroy(const gl::Context *context) override;
  
      angle::Result syncClientSideData(const gl::Context *context,
                                       const gl::AttributesMask &activeAttributesMask,
                                       GLint first,
                                       GLsizei count,
                                       GLsizei instanceCount) const;
      angle::Result syncDrawElementsState(const gl::Context *context,
                                          const gl::AttributesMask &activeAttributesMask,
                                          GLsizei count,
                                          gl::DrawElementsType type,
                                          const void *indices,
                                          GLsizei instanceCount,
                                          bool primitiveRestartEnabled,
                                          const void **outIndices) const;
  
      GLuint getVertexArrayID() const;
      GLuint getAppliedElementArrayBufferID() const;
  
      angle::Result syncState(const gl::Context *context,
                              const gl::VertexArray::DirtyBits &dirtyBits,
                              gl::VertexArray::DirtyAttribBitsArray *attribBits,
                              gl::VertexArray::DirtyBindingBitsArray *bindingBits) override;
  
      void applyNumViewsToDivisor(int numViews);
      void applyActiveAttribLocationsMask(const gl::AttributesMask &activeMask);
  
      void validateState() const;
  
    private:
      angle::Result syncDrawState(const gl::Context *context,
                                  const gl::AttributesMask &activeAttributesMask,
                                  GLint first,
                                  GLsizei count,
                                  gl::DrawElementsType type,
                                  const void *indices,
                                  GLsizei instanceCount,
                                  bool primitiveRestartEnabled,
                                  const void **outIndices) const;
  
      // Apply index data, only sets outIndexRange if attributesNeedStreaming is true
      angle::Result syncIndexData(const gl::Context *context,
                                  GLsizei count,
                                  gl::DrawElementsType type,
                                  const void *indices,
                                  bool primitiveRestartEnabled,
                                  bool attributesNeedStreaming,
                                  gl::IndexRange *outIndexRange,
                                  const void **outIndices) const;
  
      // Returns the amount of space needed to stream all attributes that need streaming
      // and the data size of the largest attribute
      void computeStreamingAttributeSizes(const gl::AttributesMask &attribsToStream,
                                          GLsizei instanceCount,
                                          const gl::IndexRange &indexRange,
                                          size_t *outStreamingDataSize,
                                          size_t *outMaxAttributeDataSize) const;
  
      // Stream attributes that have client data
      angle::Result streamAttributes(const gl::Context *context,
                                     const gl::AttributesMask &attribsToStream,
                                     GLsizei instanceCount,
                                     const gl::IndexRange &indexRange) const;
      void syncDirtyAttrib(const gl::Context *context,
                           size_t attribIndex,
                           const gl::VertexArray::DirtyAttribBits &dirtyAttribBits);
      void syncDirtyBinding(const gl::Context *context,
                            size_t bindingIndex,
                            const gl::VertexArray::DirtyBindingBits &dirtyBindingBits);
  
      void updateAttribEnabled(size_t attribIndex);
      void updateAttribPointer(const gl::Context *context, size_t attribIndex);
  
      bool supportVertexAttribBinding() const;
  
      void updateAttribFormat(size_t attribIndex);
      void updateAttribBinding(size_t attribIndex);
      void updateBindingBuffer(const gl::Context *context, size_t bindingIndex);
      void updateBindingDivisor(size_t bindingIndex);
  
      void updateElementArrayBufferBinding(const gl::Context *context) const;
  
      void callVertexAttribPointer(GLuint attribIndex,
                                   const gl::VertexAttribute &attrib,
                                   GLsizei stride,
                                   GLintptr offset) const;
  
      const FunctionsGL *mFunctions;
      StateManagerGL *mStateManager;
  
      GLuint mVertexArrayID;
      int mAppliedNumViews;
  
      // Remember the program's active attrib location mask so that attributes can be enabled/disabled
      // based on whether they are active in the program
      gl::AttributesMask mProgramActiveAttribLocationsMask;
  
      mutable gl::BindingPointer<gl::Buffer> mAppliedElementArrayBuffer;
  
      mutable std::vector<gl::VertexAttribute> mAppliedAttributes;
      mutable std::vector<gl::VertexBinding> mAppliedBindings;
  
      mutable size_t mStreamingElementArrayBufferSize;
      mutable GLuint mStreamingElementArrayBuffer;
  
      mutable size_t mStreamingArrayBufferSize;
      mutable GLuint mStreamingArrayBuffer;
  };
  
  ANGLE_INLINE angle::Result VertexArrayGL::syncDrawElementsState(
      const gl::Context *context,
      const gl::AttributesMask &activeAttributesMask,
      GLsizei count,
      gl::DrawElementsType type,
      const void *indices,
      GLsizei instanceCount,
      bool primitiveRestartEnabled,
      const void **outIndices) const
  {
      return syncDrawState(context, activeAttributesMask, 0, count, type, indices, instanceCount,
                           primitiveRestartEnabled, outIndices);
  }
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_VERTEXARRAYGL_H_
  

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