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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.
//
#include "libANGLE/renderer/renderer_utils.h"
#include "image_util/copyimage.h"
#include "image_util/imageformats.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/Format.h"
#include <string.h>
namespace rx
{
namespace
{
typedef std::pair<gl::FormatType, ColorWriteFunction> FormatWriteFunctionPair;
typedef std::map<gl::FormatType, ColorWriteFunction> FormatWriteFunctionMap;
static inline void InsertFormatWriteFunctionMapping(FormatWriteFunctionMap *map,
GLenum format,
GLenum type,
ColorWriteFunction writeFunc)
{
map->insert(FormatWriteFunctionPair(gl::FormatType(format, type), writeFunc));
}
static FormatWriteFunctionMap BuildFormatWriteFunctionMap()
{
using namespace angle; // For image writing functions
FormatWriteFunctionMap map;
// clang-format off
// | Format | Type | Color write function |
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_BYTE, WriteColor<R8G8B8A8S, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, WriteColor<R4G4B4A4, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, WriteColor<R5G5B5A1, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, WriteColor<R10G10B10A2, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_FLOAT, WriteColor<R32G32B32A32F, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_HALF_FLOAT, WriteColor<R16G16B16A16F, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_HALF_FLOAT_OES, WriteColor<R16G16B16A16F, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT,
WriteColor<R16G16B16A16, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_SHORT, WriteColor<R16G16B16A16S, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_BYTE, WriteColor<R8G8B8A8S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16B16A16, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_SHORT, WriteColor<R16G16B16A16S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32B32A32, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_INT, WriteColor<R32G32B32A32S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV, WriteColor<R10G10B10A2, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_BYTE, WriteColor<R8G8B8S, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, WriteColor<R5G6B5, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, WriteColor<R11G11B10F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, WriteColor<R9G9B9E5, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_FLOAT, WriteColor<R32G32B32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_HALF_FLOAT, WriteColor<R16G16B16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_HALF_FLOAT_OES, WriteColor<R16G16B16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_SHORT,
WriteColor<R16G16B16, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_SHORT, WriteColor<R16G16B16S, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_BYTE, WriteColor<R8G8B8S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16B16, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_SHORT, WriteColor<R16G16B16S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32B32, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_INT, WriteColor<R32G32B32S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_UNSIGNED_BYTE, WriteColor<R8G8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_BYTE, WriteColor<R8G8S, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_FLOAT, WriteColor<R32G32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_HALF_FLOAT, WriteColor<R16G16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_HALF_FLOAT_OES, WriteColor<R16G16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_UNSIGNED_SHORT, WriteColor<R16G16, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RG, GL_SHORT, WriteColor<R16G16S, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_BYTE, WriteColor<R8G8S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_SHORT, WriteColor<R16G16S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_INT, WriteColor<R32G32S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_UNSIGNED_BYTE, WriteColor<R8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_BYTE, WriteColor<R8S, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_FLOAT, WriteColor<R32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_HALF_FLOAT, WriteColor<R16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_HALF_FLOAT_OES, WriteColor<R16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_UNSIGNED_SHORT, WriteColor<R16, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RED, GL_SHORT, WriteColor<R16S, GLfloat>);
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_BYTE, WriteColor<R8S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_SHORT, WriteColor<R16S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_INT, WriteColor<R32, GLuint> );
InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_INT, WriteColor<R32S, GLint> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, WriteColor<L8A8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_UNSIGNED_BYTE, WriteColor<L8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_UNSIGNED_BYTE, WriteColor<A8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_FLOAT, WriteColor<L32A32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_FLOAT, WriteColor<L32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_FLOAT, WriteColor<A32F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, WriteColor<L16A16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES, WriteColor<L16A16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT, WriteColor<L16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT_OES, WriteColor<L16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_HALF_FLOAT, WriteColor<A16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_HALF_FLOAT_OES, WriteColor<A16F, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_BYTE, WriteColor<B8G8R8A8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, WriteColor<A4R4G4B4, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, WriteColor<A1R5G5B5, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_SRGB_EXT, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLfloat> );
InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, NULL );
InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, NULL );
InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, NULL );
InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, NULL );
InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, NULL );
InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL );
InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_FLOAT, NULL );
InsertFormatWriteFunctionMapping(&map, GL_STENCIL, GL_UNSIGNED_BYTE, NULL );
InsertFormatWriteFunctionMapping(&map, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL );
InsertFormatWriteFunctionMapping(&map, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, NULL );
// clang-format on
return map;
}
} // anonymous namespace
PackPixelsParams::PackPixelsParams()
: format(GL_NONE), type(GL_NONE), outputPitch(0), packBuffer(nullptr), offset(0)
{
}
PackPixelsParams::PackPixelsParams(const gl::Rectangle &areaIn,
GLenum formatIn,
GLenum typeIn,
GLuint outputPitchIn,
const gl::PixelPackState &packIn,
ptrdiff_t offsetIn)
: area(areaIn),
format(formatIn),
type(typeIn),
outputPitch(outputPitchIn),
packBuffer(packIn.pixelBuffer.get()),
pack(packIn.alignment, packIn.reverseRowOrder),
offset(offsetIn)
{
}
void PackPixels(const PackPixelsParams ¶ms,
const angle::Format &sourceFormat,
int inputPitchIn,
const uint8_t *sourceIn,
uint8_t *destWithoutOffset)
{
uint8_t *destWithOffset = destWithoutOffset + params.offset;
const uint8_t *source = sourceIn;
int inputPitch = inputPitchIn;
if (params.pack.reverseRowOrder)
{
source += inputPitch * (params.area.height - 1);
inputPitch = -inputPitch;
}
const auto &sourceGLInfo = gl::GetInternalFormatInfo(sourceFormat.glInternalFormat);
if (sourceGLInfo.format == params.format && sourceGLInfo.type == params.type)
{
// Direct copy possible
for (int y = 0; y < params.area.height; ++y)
{
memcpy(destWithOffset + y * params.outputPitch, source + y * inputPitch,
params.area.width * sourceGLInfo.pixelBytes);
}
return;
}
ASSERT(sourceGLInfo.pixelBytes > 0);
gl::FormatType formatType(params.format, params.type);
ColorCopyFunction fastCopyFunc =
GetFastCopyFunction(sourceFormat.fastCopyFunctions, formatType);
GLenum sizedDestInternalFormat = gl::GetSizedInternalFormat(formatType.format, formatType.type);
const auto &destFormatInfo = gl::GetInternalFormatInfo(sizedDestInternalFormat);
if (fastCopyFunc)
{
// Fast copy is possible through some special function
for (int y = 0; y < params.area.height; ++y)
{
for (int x = 0; x < params.area.width; ++x)
{
uint8_t *dest =
destWithOffset + y * params.outputPitch + x * destFormatInfo.pixelBytes;
const uint8_t *src = source + y * inputPitch + x * sourceGLInfo.pixelBytes;
fastCopyFunc(src, dest);
}
}
return;
}
ColorWriteFunction colorWriteFunction = GetColorWriteFunction(formatType);
// Maximum size of any Color<T> type used.
uint8_t temp[16];
static_assert(sizeof(temp) >= sizeof(gl::ColorF) && sizeof(temp) >= sizeof(gl::ColorUI) &&
sizeof(temp) >= sizeof(gl::ColorI),
"Unexpected size of gl::Color struct.");
const auto &colorReadFunction = sourceFormat.colorReadFunction;
for (int y = 0; y < params.area.height; ++y)
{
for (int x = 0; x < params.area.width; ++x)
{
uint8_t *dest = destWithOffset + y * params.outputPitch + x * destFormatInfo.pixelBytes;
const uint8_t *src = source + y * inputPitch + x * sourceGLInfo.pixelBytes;
// readFunc and writeFunc will be using the same type of color, CopyTexImage
// will not allow the copy otherwise.
colorReadFunction(src, temp);
colorWriteFunction(temp, dest);
}
}
}
ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType)
{
static const FormatWriteFunctionMap formatTypeMap = BuildFormatWriteFunctionMap();
auto iter = formatTypeMap.find(formatType);
ASSERT(iter != formatTypeMap.end());
if (iter != formatTypeMap.end())
{
return iter->second;
}
else
{
return nullptr;
}
}
ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions,
const gl::FormatType &formatType)
{
auto iter = fastCopyFunctions.find(formatType);
return (iter != fastCopyFunctions.end()) ? iter->second : nullptr;
}
} // namespace rx
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