chromium/third_party/angle/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
{ … };

//
// Implementation of Generic Vertex Attributes for ES3.1
//
struct VertexAttribute final : private angle::NonCopyable
{ … };

ANGLE_INLINE 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(GLuint divisor, size_t drawCount, size_t instanceCount);

struct VertexAttribCurrentValueData
{ … };

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_