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//
// Copyright 2016 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.
//
// Format:
// A universal description of typed GPU storage. Across multiple
// renderer back-ends, there are common formats and some distinct
// permutations, this enum encapsulates them all. Formats apply to
// textures, but could also apply to any typed data.
#ifndef LIBANGLE_RENDERER_FORMAT_H_
#define LIBANGLE_RENDERER_FORMAT_H_
#include "libANGLE/renderer/renderer_utils.h"
namespace angle
{
struct Format final : private angle::NonCopyable
{
enum class ID;
constexpr Format(ID id,
GLenum glFormat,
GLenum fboFormat,
rx::MipGenerationFunction mipGen,
const rx::FastCopyFunctionMap &fastCopyFunctions,
rx::ColorReadFunction colorRead,
rx::ColorWriteFunction colorWrite,
GLenum componentType,
GLuint redBits,
GLuint greenBits,
GLuint blueBits,
GLuint alphaBits,
GLuint depthBits,
GLuint stencilBits);
static const Format &Get(ID id);
static ID InternalFormatToID(GLenum internalFormat);
ID id;
// The closest matching GL internal format for the storage this format uses. Note that this
// may be a different internal format than the one this ANGLE format is used for.
GLenum glInternalFormat;
// The format we should report to the GL layer when querying implementation formats from a FBO.
// This might not be the same as the glInternalFormat, since some DXGI formats don't have
// matching GL format enums, like BGRA4, BGR5A1 and B5G6R6.
GLenum fboImplementationInternalFormat;
rx::MipGenerationFunction mipGenerationFunction;
rx::ColorReadFunction colorReadFunction;
rx::ColorWriteFunction colorWriteFunction;
// A map from a gl::FormatType to a fast pixel copy function for this format.
const rx::FastCopyFunctionMap &fastCopyFunctions;
GLenum componentType;
GLuint redBits;
GLuint greenBits;
GLuint blueBits;
GLuint alphaBits;
GLuint depthBits;
GLuint stencilBits;
};
constexpr Format::Format(ID id,
GLenum glFormat,
GLenum fboFormat,
rx::MipGenerationFunction mipGen,
const rx::FastCopyFunctionMap &fastCopyFunctions,
rx::ColorReadFunction colorRead,
rx::ColorWriteFunction colorWrite,
GLenum componentType,
GLuint redBits,
GLuint greenBits,
GLuint blueBits,
GLuint alphaBits,
GLuint depthBits,
GLuint stencilBits)
: id(id),
glInternalFormat(glFormat),
fboImplementationInternalFormat(fboFormat),
mipGenerationFunction(mipGen),
colorReadFunction(colorRead),
colorWriteFunction(colorWrite),
fastCopyFunctions(fastCopyFunctions),
componentType(componentType),
redBits(redBits),
greenBits(greenBits),
blueBits(blueBits),
alphaBits(alphaBits),
depthBits(depthBits),
stencilBits(stencilBits)
{
}
} // namespace angle
#include "libANGLE/renderer/Format_ID_autogen.inl"
#endif // LIBANGLE_RENDERER_FORMAT_H_
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