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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.
//
// renderer_utils:
// Helper methods pertaining to most or all back-ends.
//
#ifndef LIBANGLE_RENDERER_RENDERER_UTILS_H_
#define LIBANGLE_RENDERER_RENDERER_UTILS_H_
#include <cstdint>
#include <map>
#include "libANGLE/angletypes.h"
namespace angle
{
struct Format;
}
namespace gl
{
struct FormatType;
struct InternalFormat;
}
namespace rx
{
using MipGenerationFunction = void (*)(size_t sourceWidth,
size_t sourceHeight,
size_t sourceDepth,
const uint8_t *sourceData,
size_t sourceRowPitch,
size_t sourceDepthPitch,
uint8_t *destData,
size_t destRowPitch,
size_t destDepthPitch);
typedef void (*ColorReadFunction)(const uint8_t *source, uint8_t *dest);
typedef void (*ColorWriteFunction)(const uint8_t *source, uint8_t *dest);
typedef void (*ColorCopyFunction)(const uint8_t *source, uint8_t *dest);
class FastCopyFunctionMap
{
public:
struct Entry
{
GLenum format;
GLenum type;
ColorCopyFunction func;
};
constexpr FastCopyFunctionMap() : FastCopyFunctionMap(nullptr, 0) {}
constexpr FastCopyFunctionMap(const Entry *data, size_t size) : mSize(size), mData(data) {}
bool has(const gl::FormatType &formatType) const;
ColorCopyFunction get(const gl::FormatType &formatType) const;
private:
size_t mSize;
const Entry *mData;
};
struct PackPixelsParams
{
PackPixelsParams();
PackPixelsParams(const gl::Rectangle &area,
GLenum format,
GLenum type,
GLuint outputPitch,
const gl::PixelPackState &pack,
ptrdiff_t offset);
gl::Rectangle area;
GLenum format;
GLenum type;
GLuint outputPitch;
gl::Buffer *packBuffer;
gl::PixelPackState pack;
ptrdiff_t offset;
};
void PackPixels(const PackPixelsParams ¶ms,
const angle::Format &sourceFormat,
int inputPitch,
const uint8_t *source,
uint8_t *destination);
ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType);
ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions,
const gl::FormatType &formatType);
using LoadImageFunction = void (*)(size_t width,
size_t height,
size_t depth,
const uint8_t *input,
size_t inputRowPitch,
size_t inputDepthPitch,
uint8_t *output,
size_t outputRowPitch,
size_t outputDepthPitch);
struct LoadImageFunctionInfo
{
LoadImageFunctionInfo() : loadFunction(nullptr), requiresConversion(false) {}
LoadImageFunctionInfo(LoadImageFunction loadFunction, bool requiresConversion)
: loadFunction(loadFunction), requiresConversion(requiresConversion)
{
}
LoadImageFunction loadFunction;
bool requiresConversion;
};
using LoadFunctionMap = LoadImageFunctionInfo (*)(GLenum);
} // namespace rx
#endif // LIBANGLE_RENDERER_RENDERER_UTILS_H_
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