kc3-lang/angle/src/libANGLE/VertexArray.h

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• Hash : 47110bf4
  Author :
  Date : 2016-04-20T11:13:22
  

  Implement CHROMIUM_copy_compressed_texture for D3D11.
  
  BUG=angleproject:1356
  
  Change-Id: Id563997d2921cf558c52a781ae66d8bde58d1f2f
  Reviewed-on: https://chromium-review.googlesource.com/339847
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/VertexArray.h

• //
  // Copyright (c) 2013 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.
  //
  // This class contains prototypes for representing GLES 3 Vertex Array Objects:
  //
  //   The buffer objects that are to be used by the vertex stage of the GL are collected
  //   together to form a vertex array object. All state related to the definition of data used
  //   by the vertex processor is encapsulated in a vertex array object.
  //
  
  #ifndef LIBANGLE_VERTEXARRAY_H_
  #define LIBANGLE_VERTEXARRAY_H_
  
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/Debug.h"
  #include "libANGLE/State.h"
  #include "libANGLE/VertexAttribute.h"
  
  #include <vector>
  
  namespace rx
  {
  class GLImplFactory;
  class VertexArrayImpl;
  }
  
  namespace gl
  {
  class Buffer;
  
  class VertexArrayState final : public angle::NonCopyable
  {
    public:
      explicit VertexArrayState(size_t maxAttribs);
      ~VertexArrayState();
  
      const std::string &getLabel() const { return mLabel; }
  
      const BindingPointer<Buffer> &getElementArrayBuffer() const { return mElementArrayBuffer; }
      size_t getMaxAttribs() const { return mVertexAttributes.size(); }
      size_t getMaxEnabledAttribute() const { return mMaxEnabledAttribute; }
      const std::vector<VertexAttribute> &getVertexAttributes() const { return mVertexAttributes; }
      const VertexAttribute &getVertexAttribute(size_t index) const
      {
          return mVertexAttributes[index];
      }
  
    private:
      friend class VertexArray;
      std::string mLabel;
      std::vector<VertexAttribute> mVertexAttributes;
      BindingPointer<Buffer> mElementArrayBuffer;
      size_t mMaxEnabledAttribute;
  };
  
  class VertexArray final : public LabeledObject
  {
    public:
      VertexArray(rx::GLImplFactory *factory, GLuint id, size_t maxAttribs);
      ~VertexArray();
  
      GLuint id() const;
  
      void setLabel(const std::string &label) override;
      const std::string &getLabel() const override;
  
      const VertexAttribute &getVertexAttribute(size_t attributeIndex) const;
  
      void detachBuffer(GLuint bufferName);
      void setVertexAttribDivisor(size_t index, GLuint divisor);
      void enableAttribute(size_t attributeIndex, bool enabledState);
      void setAttributeState(size_t attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
                             bool normalized, bool pureInteger, GLsizei stride, const void *pointer);
  
      void setElementArrayBuffer(Buffer *buffer);
  
      const BindingPointer<Buffer> &getElementArrayBuffer() const
      {
          return mState.getElementArrayBuffer();
      }
      size_t getMaxAttribs() const { return mState.getVertexAttributes().size(); }
      const std::vector<VertexAttribute> &getVertexAttributes() const
      {
          return mState.getVertexAttributes();
      }
  
      rx::VertexArrayImpl *getImplementation() const { return mVertexArray; }
  
      size_t getMaxEnabledAttribute() const { return mState.getMaxEnabledAttribute(); }
  
      enum DirtyBitType
      {
          DIRTY_BIT_ELEMENT_ARRAY_BUFFER,
  
          // Reserve bits for enabled flags
          DIRTY_BIT_ATTRIB_0_ENABLED,
          DIRTY_BIT_ATTRIB_MAX_ENABLED = DIRTY_BIT_ATTRIB_0_ENABLED + gl::MAX_VERTEX_ATTRIBS,
  
          // Reserve bits for attrib pointers
          DIRTY_BIT_ATTRIB_0_POINTER   = DIRTY_BIT_ATTRIB_MAX_ENABLED,
          DIRTY_BIT_ATTRIB_MAX_POINTER = DIRTY_BIT_ATTRIB_0_POINTER + gl::MAX_VERTEX_ATTRIBS,
  
          // Reserve bits for divisors
          DIRTY_BIT_ATTRIB_0_DIVISOR   = DIRTY_BIT_ATTRIB_MAX_POINTER,
          DIRTY_BIT_ATTRIB_MAX_DIVISOR = DIRTY_BIT_ATTRIB_0_DIVISOR + gl::MAX_VERTEX_ATTRIBS,
  
          DIRTY_BIT_UNKNOWN = DIRTY_BIT_ATTRIB_MAX_DIVISOR,
          DIRTY_BIT_MAX     = DIRTY_BIT_UNKNOWN,
      };
  
      typedef std::bitset<DIRTY_BIT_MAX> DirtyBits;
  
      void syncImplState();
      bool hasAnyDirtyBit() const { return mDirtyBits.any(); }
  
    private:
      GLuint mId;
  
      VertexArrayState mState;
      DirtyBits mDirtyBits;
  
      rx::VertexArrayImpl *mVertexArray;
  };
  
  }
  
  #endif // LIBANGLE_VERTEXARRAY_H_
  

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