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//
// 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.
//
// formatutils.h: Queries for GL image formats.
#ifndef LIBANGLE_FORMATUTILS_H_
#define LIBANGLE_FORMATUTILS_H_
#include "libANGLE/Caps.h"
#include "libANGLE/angletypes.h"
#include "angle_gl.h"
#include <cstddef>
#include <stdint.h>
namespace gl
{
struct Type
{
Type();
GLuint bytes;
GLuint bytesShift; // Bit shift by this value to effectively divide/multiply by "bytes" in a more optimal way
bool specialInterpretation;
};
const Type &GetTypeInfo(GLenum type);
struct InternalFormat
{
InternalFormat();
GLuint redBits;
GLuint greenBits;
GLuint blueBits;
GLuint luminanceBits;
GLuint alphaBits;
GLuint sharedBits;
GLuint depthBits;
GLuint stencilBits;
GLuint pixelBytes;
GLuint componentCount;
bool compressed;
GLuint compressedBlockWidth;
GLuint compressedBlockHeight;
GLenum format;
GLenum type;
GLenum componentType;
GLenum colorEncoding;
typedef bool (*SupportCheckFunction)(GLuint, const Extensions &);
SupportCheckFunction textureSupport;
SupportCheckFunction renderSupport;
SupportCheckFunction filterSupport;
GLuint computeRowPitch(GLenum formatType, GLsizei width, GLint alignment, GLint rowLength) const;
GLuint computeDepthPitch(GLenum formatType, GLsizei width, GLsizei height, GLint alignment, GLint rowLength) const;
GLuint computeBlockSize(GLenum formatType, GLsizei width, GLsizei height) const;
};
const InternalFormat &GetInternalFormatInfo(GLenum internalFormat);
GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type);
typedef std::set<GLenum> FormatSet;
const FormatSet &GetAllSizedInternalFormats();
}
#endif // LIBANGLE_FORMATUTILS_H_
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