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

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/VertexAttribute.h

• //
  // Copyright 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.
  //
  // Helper structures about Generic Vertex Attribute.
  //
  
  #ifndef LIBANGLE_VERTEXATTRIBUTE_H_
  #define LIBANGLE_VERTEXATTRIBUTE_H_
  
  #include "libANGLE/Buffer.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/Format.h"
  
  namespace gl
  {
  class VertexArray;
  
  //
  // Implementation of Generic Vertex Attribute Bindings for ES3.1. The members are intentionally made
  // private in order to hide implementation details.
  //
  class VertexBinding final : angle::NonCopyable
  {
    public:
      VertexBinding();
      explicit VertexBinding(GLuint boundAttribute);
      VertexBinding(VertexBinding &&binding);
      ~VertexBinding();
      VertexBinding &operator=(VertexBinding &&binding);
  
      GLuint getStride() const { return mStride; }
      void setStride(GLuint strideIn) { mStride = strideIn; }
  
      GLuint getDivisor() const { return mDivisor; }
      void setDivisor(GLuint divisorIn) { mDivisor = divisorIn; }
  
      GLintptr getOffset() const { return mOffset; }
      void setOffset(GLintptr offsetIn) { mOffset = offsetIn; }
  
      const BindingPointer<Buffer> &getBuffer() const { return mBuffer; }
  
      ANGLE_INLINE void setBuffer(const gl::Context *context, Buffer *bufferIn)
      {
          mBuffer.set(context, bufferIn);
      }
  
      // Skips ref counting for better inlined performance.
      ANGLE_INLINE void assignBuffer(Buffer *bufferIn) { mBuffer.assign(bufferIn); }
  
      void onContainerBindingChanged(const Context *context, int incr) const;
  
      const AttributesMask &getBoundAttributesMask() const { return mBoundAttributesMask; }
  
      void setBoundAttribute(size_t index) { mBoundAttributesMask.set(index); }
  
      void resetBoundAttribute(size_t index) { mBoundAttributesMask.reset(index); }
  
    private:
      GLuint mStride;
      GLuint mDivisor;
      GLintptr mOffset;
  
      BindingPointer<Buffer> mBuffer;
  
      // Mapping from this binding to all of the attributes that are using this binding.
      AttributesMask mBoundAttributesMask;
  };
  
  //
  // Implementation of Generic Vertex Attributes for ES3.1
  //
  struct VertexAttribute final : private angle::NonCopyable
  {
      explicit VertexAttribute(GLuint bindingIndex);
      VertexAttribute(VertexAttribute &&attrib);
      VertexAttribute &operator=(VertexAttribute &&attrib);
  
      // Called from VertexArray.
      void updateCachedElementLimit(const VertexBinding &binding);
      GLint64 getCachedElementLimit() const { return mCachedElementLimit; }
  
      bool enabled;  // For glEnable/DisableVertexAttribArray
      const angle::Format *format;
  
      const void *pointer;
      GLuint relativeOffset;
  
      GLuint vertexAttribArrayStride;  // ONLY for queries of VERTEX_ATTRIB_ARRAY_STRIDE
      GLuint bindingIndex;
  
      // Special value for the cached element limit on the integer overflow case.
      static constexpr GLint64 kIntegerOverflow = std::numeric_limits<GLint64>::min();
  
    private:
      // This is kept in sync by the VertexArray. It is used to optimize draw call validation.
      GLint64 mCachedElementLimit;
  };
  
  ANGLE_INLINE size_t ComputeVertexAttributeTypeSize(const VertexAttribute &attrib)
  {
      ASSERT(attrib.format);
      return attrib.format->pixelBytes;
  }
  
  // Warning: you should ensure binding really matches attrib.bindingIndex before using this function.
  size_t ComputeVertexAttributeStride(const VertexAttribute &attrib, const VertexBinding &binding);
  
  // Warning: you should ensure binding really matches attrib.bindingIndex before using this function.
  GLintptr ComputeVertexAttributeOffset(const VertexAttribute &attrib, const VertexBinding &binding);
  
  size_t ComputeVertexBindingElementCount(GLuint divisor, size_t drawCount, size_t instanceCount);
  
  struct VertexAttribCurrentValueData
  {
      union
      {
          GLfloat FloatValues[4];
          GLint IntValues[4];
          GLuint UnsignedIntValues[4];
      } Values;
      VertexAttribType Type;
  
      VertexAttribCurrentValueData();
  
      void setFloatValues(const GLfloat floatValues[4]);
      void setIntValues(const GLint intValues[4]);
      void setUnsignedIntValues(const GLuint unsignedIntValues[4]);
  };
  
  bool operator==(const VertexAttribCurrentValueData &a, const VertexAttribCurrentValueData &b);
  bool operator!=(const VertexAttribCurrentValueData &a, const VertexAttribCurrentValueData &b);
  
  }  // namespace gl
  
  #include "VertexAttribute.inc"
  
  #endif  // LIBANGLE_VERTEXATTRIBUTE_H_
  

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