chromium/third_party/angle/src/libANGLE/Constants.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.
//

// Contants.h: Defines some implementation specific and gl constants

#ifndef LIBANGLE_CONSTANTS_H_
#define LIBANGLE_CONSTANTS_H_

#include "common/platform.h"

#include <stddef.h>

namespace gl
{

// The binary cache is currently left disable by default, and the application can enable it.
const size_t kDefaultMaxProgramCacheMemoryBytes = …;

enum
{ … };

namespace limits
{
// Almost all drivers use 2048 (the minimum value) as GL_MAX_VERTEX_ATTRIB_STRIDE.  ANGLE advertizes
// the same limit.
constexpr uint32_t kMaxVertexAttribStride = …;

// Some of the minimums required by GL, used to detect if the backend meets the minimum requirement.
// Currently, there's no need to separate these values per spec version.
constexpr uint32_t kMinimumComputeStorageBuffers = …;

// OpenGL ES 3.0+ Minimum Values
// Table 6.31 MAX_VERTEX_UNIFORM_BLOCKS minimum value = 12
// Table 6.32 MAX_FRAGMENT_UNIFORM_BLOCKS minimum value = 12
constexpr uint32_t kMinimumShaderUniformBlocks = …;
// Table 6.31 MAX_VERTEX_OUTPUT_COMPONENTS minimum value = 64
constexpr uint32_t kMinimumVertexOutputComponents = …;

// OpenGL ES 3.2+ Minimum Values
// Table 21.42 TEXTURE_BUFFER_OFFSET_ALIGNMENT minimum value = 256
constexpr uint32_t kMinTextureBufferOffsetAlignment = …;

}  // namespace limits

}  // namespace gl

#endif  // LIBANGLE_CONSTANTS_H_