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

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• Hash : aa7203ef
  Author :
  Date : 2017-05-03T23:32:29
  

  Inherit privately from angle::NonCopyable.
  
  Make all inheritance from angle::NonCopyable private so the compiler
  complains about this (admittedly unlikely) code:
  
    class Foo: angle::NonCopyable {
        virtual ~Foo() { ... }
    };
    angle::NonCopyable *p = new Foo;
    delete p;
  
  In the above code ~Foo() is not called, only ~NonCopyable(), because the
  latter is not virtual.  Making it virtual would add overhead to all derived
  classes which don't already have a virtual method.
  
  Also tighten access in NonCopyable, because we can.
  
  BUG=angleproject:2026
  
  Change-Id: Id0dc4d959cfb7bb82cf49382118129abb1d3a4f0
  Reviewed-on: https://chromium-review.googlesource.com/495352
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
  

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• src/libANGLE/VertexAttribute.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.
  //
  // Helper structures about Generic Vertex Attribute.
  //
  
  #ifndef LIBANGLE_VERTEXATTRIBUTE_H_
  #define LIBANGLE_VERTEXATTRIBUTE_H_
  
  #include "libANGLE/Buffer.h"
  
  namespace gl
  {
  class VertexArray;
  
  //
  // Implementation of Generic Vertex Attribute Bindings for ES3.1
  //
  struct VertexBinding final : private angle::NonCopyable
  {
      VertexBinding();
      explicit VertexBinding(VertexBinding &&binding);
      VertexBinding &operator=(VertexBinding &&binding);
  
      GLuint stride;
      GLuint divisor;
      GLintptr offset;
  
      BindingPointer<Buffer> buffer;
  };
  
  //
  // Implementation of Generic Vertex Attributes for ES3.1
  //
  struct VertexAttribute final : private angle::NonCopyable
  {
      explicit VertexAttribute(GLuint bindingIndex);
      explicit VertexAttribute(VertexAttribute &&attrib);
      VertexAttribute &operator=(VertexAttribute &&attrib);
  
      bool enabled;  // For glEnable/DisableVertexAttribArray
      GLenum type;
      GLuint size;
      bool normalized;
      bool pureInteger;
  
      const void *pointer;
      GLintptr relativeOffset;
  
      GLuint vertexAttribArrayStride;  // ONLY for queries of VERTEX_ATTRIB_ARRAY_STRIDE
      GLuint bindingIndex;
  };
  
  bool operator==(const VertexAttribute &a, const VertexAttribute &b);
  bool operator!=(const VertexAttribute &a, const VertexAttribute &b);
  bool operator==(const VertexBinding &a, const VertexBinding &b);
  bool operator!=(const VertexBinding &a, const VertexBinding &b);
  
  size_t ComputeVertexAttributeTypeSize(const VertexAttribute &attrib);
  
  // 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(const VertexBinding &binding,
                                          size_t drawCount,
                                          size_t instanceCount);
  
  struct VertexAttribCurrentValueData
  {
      union
      {
          GLfloat FloatValues[4];
          GLint IntValues[4];
          GLuint UnsignedIntValues[4];
      };
      GLenum 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.inl"
  
  #endif // LIBANGLE_VERTEXATTRIBUTE_H_
  

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