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image.cpp
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image.cpp
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/*
* Copyright 2011-2024 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bimg/blob/master/LICENSE
*/
#include "bimg_p.h"
#include <bx/hash.h>
#include <astcenc.h>
#include <bx/debug.h>
namespace bimg
{
static const ImageBlockInfo s_imageBlockInfo[] =
{
// +--------------------------------------------- bits per pixel
// | +----------------------------------------- block width
// | | +-------------------------------------- block height
// | | | +---------------------------------- block size
// | | | | +------------------------------- min blocks x
// | | | | | +---------------------------- min blocks y
// | | | | | | +------------------------ depth bits
// | | | | | | | +--------------------- stencil bits
// | | | | | | | | +---+---+---+----- r, g, b, a bits
// | | | | | | | | r g b a +-- encoding type
// | | | | | | | | | | | | |
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC1
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC2
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC3
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC4
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC5
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // BC6H
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // BC7
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ETC1
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ETC2
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ETC2A
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ETC2A1
{ 2, 8, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC12
{ 4, 4, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC14
{ 2, 8, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC12A
{ 4, 4, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC14A
{ 2, 8, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC22
{ 4, 4, 4, 8, 2, 2, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // PTC24
{ 4, 4, 4, 8, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ATC
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ATCE
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ATCI
{ 8, 4, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC4x4
{ 6, 5, 4, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC5x4
{ 6, 5, 5, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC5x5
{ 4, 6, 5, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC6x5
{ 4, 6, 6, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC6x6
{ 4, 8, 5, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC8x5
{ 3, 8, 6, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC8x6
{ 2, 8, 8, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC8x8
{ 3, 10, 5, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC10x5
{ 2, 10, 6, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC10x6
{ 2, 10, 8, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC10x8
{ 1, 10,10, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC10x10
{ 1, 12,10, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC12x10
{ 1, 12,12, 16, 1, 1, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // ASTC12x12
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Count) }, // Unknown
{ 1, 8, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // R1
{ 8, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 8, uint8_t(bx::EncodingType::Unorm) }, // A8
{ 8, 1, 1, 1, 1, 1, 0, 0, 8, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // R8
{ 8, 1, 1, 1, 1, 1, 0, 0, 8, 0, 0, 0, uint8_t(bx::EncodingType::Int ) }, // R8I
{ 8, 1, 1, 1, 1, 1, 0, 0, 8, 0, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // R8U
{ 8, 1, 1, 1, 1, 1, 0, 0, 8, 0, 0, 0, uint8_t(bx::EncodingType::Snorm) }, // R8S
{ 16, 1, 1, 2, 1, 1, 0, 0, 16, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // R16
{ 16, 1, 1, 2, 1, 1, 0, 0, 16, 0, 0, 0, uint8_t(bx::EncodingType::Int ) }, // R16I
{ 16, 1, 1, 2, 1, 1, 0, 0, 16, 0, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // R16U
{ 16, 1, 1, 2, 1, 1, 0, 0, 16, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // R16F
{ 16, 1, 1, 2, 1, 1, 0, 0, 16, 0, 0, 0, uint8_t(bx::EncodingType::Snorm) }, // R16S
{ 32, 1, 1, 4, 1, 1, 0, 0, 32, 0, 0, 0, uint8_t(bx::EncodingType::Int ) }, // R32I
{ 32, 1, 1, 4, 1, 1, 0, 0, 32, 0, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // R32U
{ 32, 1, 1, 4, 1, 1, 0, 0, 32, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // R32F
{ 16, 1, 1, 2, 1, 1, 0, 0, 8, 8, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // RG8
{ 16, 1, 1, 2, 1, 1, 0, 0, 8, 8, 0, 0, uint8_t(bx::EncodingType::Int ) }, // RG8I
{ 16, 1, 1, 2, 1, 1, 0, 0, 8, 8, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // RG8U
{ 16, 1, 1, 2, 1, 1, 0, 0, 8, 8, 0, 0, uint8_t(bx::EncodingType::Snorm) }, // RG8S
{ 32, 1, 1, 4, 1, 1, 0, 0, 16, 16, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // RG16
{ 32, 1, 1, 4, 1, 1, 0, 0, 16, 16, 0, 0, uint8_t(bx::EncodingType::Int ) }, // RG16I
{ 32, 1, 1, 4, 1, 1, 0, 0, 16, 16, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // RG16U
{ 32, 1, 1, 4, 1, 1, 0, 0, 16, 16, 0, 0, uint8_t(bx::EncodingType::Float) }, // RG16F
{ 32, 1, 1, 4, 1, 1, 0, 0, 16, 16, 0, 0, uint8_t(bx::EncodingType::Snorm) }, // RG16S
{ 64, 1, 1, 8, 1, 1, 0, 0, 32, 32, 0, 0, uint8_t(bx::EncodingType::Int ) }, // RG32I
{ 64, 1, 1, 8, 1, 1, 0, 0, 32, 32, 0, 0, uint8_t(bx::EncodingType::Uint ) }, // RG32U
{ 64, 1, 1, 8, 1, 1, 0, 0, 32, 32, 0, 0, uint8_t(bx::EncodingType::Float) }, // RG32F
{ 24, 1, 1, 3, 1, 1, 0, 0, 8, 8, 8, 0, uint8_t(bx::EncodingType::Unorm) }, // RGB8
{ 24, 1, 1, 3, 1, 1, 0, 0, 8, 8, 8, 0, uint8_t(bx::EncodingType::Int ) }, // RGB8I
{ 24, 1, 1, 3, 1, 1, 0, 0, 8, 8, 8, 0, uint8_t(bx::EncodingType::Uint ) }, // RGB8U
{ 24, 1, 1, 3, 1, 1, 0, 0, 8, 8, 8, 0, uint8_t(bx::EncodingType::Snorm) }, // RGB8S
{ 32, 1, 1, 4, 1, 1, 0, 0, 9, 9, 9, 5, uint8_t(bx::EncodingType::Float) }, // RGB9E5F
{ 32, 1, 1, 4, 1, 1, 0, 0, 8, 8, 8, 8, uint8_t(bx::EncodingType::Unorm) }, // BGRA8
{ 32, 1, 1, 4, 1, 1, 0, 0, 8, 8, 8, 8, uint8_t(bx::EncodingType::Unorm) }, // RGBA8
{ 32, 1, 1, 4, 1, 1, 0, 0, 8, 8, 8, 8, uint8_t(bx::EncodingType::Int ) }, // RGBA8I
{ 32, 1, 1, 4, 1, 1, 0, 0, 8, 8, 8, 8, uint8_t(bx::EncodingType::Uint ) }, // RGBA8U
{ 32, 1, 1, 4, 1, 1, 0, 0, 8, 8, 8, 8, uint8_t(bx::EncodingType::Snorm) }, // RGBA8S
{ 64, 1, 1, 8, 1, 1, 0, 0, 16, 16, 16, 16, uint8_t(bx::EncodingType::Unorm) }, // RGBA16
{ 64, 1, 1, 8, 1, 1, 0, 0, 16, 16, 16, 16, uint8_t(bx::EncodingType::Int ) }, // RGBA16I
{ 64, 1, 1, 8, 1, 1, 0, 0, 16, 16, 16, 16, uint8_t(bx::EncodingType::Uint ) }, // RGBA16U
{ 64, 1, 1, 8, 1, 1, 0, 0, 16, 16, 16, 16, uint8_t(bx::EncodingType::Float) }, // RGBA16F
{ 64, 1, 1, 8, 1, 1, 0, 0, 16, 16, 16, 16, uint8_t(bx::EncodingType::Snorm) }, // RGBA16S
{ 128, 1, 1, 16, 1, 1, 0, 0, 32, 32, 32, 32, uint8_t(bx::EncodingType::Int ) }, // RGBA32I
{ 128, 1, 1, 16, 1, 1, 0, 0, 32, 32, 32, 32, uint8_t(bx::EncodingType::Uint ) }, // RGBA32U
{ 128, 1, 1, 16, 1, 1, 0, 0, 32, 32, 32, 32, uint8_t(bx::EncodingType::Float) }, // RGBA32F
{ 16, 1, 1, 2, 1, 1, 0, 0, 5, 6, 5, 0, uint8_t(bx::EncodingType::Unorm) }, // B5G6R5
{ 16, 1, 1, 2, 1, 1, 0, 0, 5, 6, 5, 0, uint8_t(bx::EncodingType::Unorm) }, // R5G6B5
{ 16, 1, 1, 2, 1, 1, 0, 0, 4, 4, 4, 4, uint8_t(bx::EncodingType::Unorm) }, // BGRA4
{ 16, 1, 1, 2, 1, 1, 0, 0, 4, 4, 4, 4, uint8_t(bx::EncodingType::Unorm) }, // RGBA4
{ 16, 1, 1, 2, 1, 1, 0, 0, 5, 5, 5, 1, uint8_t(bx::EncodingType::Unorm) }, // BGR5A1
{ 16, 1, 1, 2, 1, 1, 0, 0, 5, 5, 5, 1, uint8_t(bx::EncodingType::Unorm) }, // RGB5A1
{ 32, 1, 1, 4, 1, 1, 0, 0, 10, 10, 10, 2, uint8_t(bx::EncodingType::Unorm) }, // RGB10A2
{ 32, 1, 1, 4, 1, 1, 0, 0, 11, 11, 10, 0, uint8_t(bx::EncodingType::Unorm) }, // RG11B10F
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Count) }, // UnknownDepth
{ 16, 1, 1, 2, 1, 1, 16, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // D16
{ 24, 1, 1, 3, 1, 1, 24, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // D24
{ 32, 1, 1, 4, 1, 1, 24, 8, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // D24S8
{ 32, 1, 1, 4, 1, 1, 32, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // D32
{ 16, 1, 1, 2, 1, 1, 16, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // D16F
{ 24, 1, 1, 3, 1, 1, 24, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // D24F
{ 32, 1, 1, 4, 1, 1, 32, 0, 0, 0, 0, 0, uint8_t(bx::EncodingType::Float) }, // D32F
{ 8, 1, 1, 1, 1, 1, 0, 8, 0, 0, 0, 0, uint8_t(bx::EncodingType::Unorm) }, // D0S8
};
BX_STATIC_ASSERT(TextureFormat::Count == BX_COUNTOF(s_imageBlockInfo) );
static const char* s_textureFormatName[] =
{
"BC1", // BC1
"BC2", // BC2
"BC3", // BC3
"BC4", // BC4
"BC5", // BC5
"BC6H", // BC6H
"BC7", // BC7
"ETC1", // ETC1
"ETC2", // ETC2
"ETC2A", // ETC2A
"ETC2A1", // ETC2A1
"PTC12", // PTC12
"PTC14", // PTC14
"PTC12A", // PTC12A
"PTC14A", // PTC14A
"PTC22", // PTC22
"PTC24", // PTC24
"ATC", // ATC
"ATCE", // ATCE
"ATCI", // ATCI
"ASTC4x4", // ASTC4x4
"ASTC5x4", // ASTC5x4
"ASTC5x5", // ASTC5x5
"ASTC6x5", // ASTC6x5
"ASTC6x6", // ASTC6x6
"ASTC8x5", // ASTC8x5
"ASTC8x6", // ASTC8x6
"ASTC8x8", // ASTC8x8
"ASTC10x5", // ASTC10x5
"ASTC10x6", // ASTC10x6
"ASTC10x8", // ASTC10x8
"ASTC10x10", // ASTC10x10
"ASTC12x10", // ASTC12x10
"ASTC12x12", // ASTC12x12
"<unknown>", // Unknown
"R1", // R1
"A8", // A8
"R8", // R8
"R8I", // R8I
"R8U", // R8U
"R8S", // R8S
"R16", // R16
"R16I", // R16I
"R16U", // R16U
"R16F", // R16F
"R16S", // R16S
"R32I", // R32I
"R32U", // R32U
"R32F", // R32F
"RG8", // RG8
"RG8I", // RG8I
"RG8U", // RG8U
"RG8S", // RG8S
"RG16", // RG16
"RG16I", // RG16I
"RG16U", // RG16U
"RG16F", // RG16F
"RG16S", // RG16S
"RG32I", // RG32I
"RG32U", // RG32U
"RG32F", // RG32F
"RGB8", // RGB8
"RGB8I", // RGB8I
"RGB8U", // RGB8U
"RGB8S", // RGB8S
"RGB9E5", // RGB9E5F
"BGRA8", // BGRA8
"RGBA8", // RGBA8
"RGBA8I", // RGBA8I
"RGBA8U", // RGBA8U
"RGBA8S", // RGBA8S
"RGBA16", // RGBA16
"RGBA16I", // RGBA16I
"RGBA16U", // RGBA16U
"RGBA16F", // RGBA16F
"RGBA16S", // RGBA16S
"RGBA32I", // RGBA32I
"RGBA32U", // RGBA32U
"RGBA32F", // RGBA32F
"B5G6R5", // B5G6R5
"R5G6B5", // R5G6B5
"BGRA4", // BGRA4
"RGBA4", // RGBA4
"BGR5A1", // BGR5A1
"RGB5A1", // RGB5A1
"RGB10A2", // RGB10A2
"RG11B10F", // RG11B10F
"<unknown>", // UnknownDepth
"D16", // D16
"D24", // D24
"D24S8", // D24S8
"D32", // D32
"D16F", // D16F
"D24F", // D24F
"D32F", // D32F
"D0S8", // D0S8
};
BX_STATIC_ASSERT(TextureFormat::Count == BX_COUNTOF(s_textureFormatName) );
bool isCompressed(TextureFormat::Enum _format)
{
return _format < TextureFormat::Unknown;
}
bool isColor(TextureFormat::Enum _format)
{
return _format > TextureFormat::Unknown
&& _format < TextureFormat::UnknownDepth
;
}
bool isDepth(TextureFormat::Enum _format)
{
return _format > TextureFormat::UnknownDepth
&& _format < TextureFormat::Count
;
}
bool isValid(TextureFormat::Enum _format)
{
return _format != TextureFormat::Unknown
&& _format != TextureFormat::UnknownDepth
&& _format != TextureFormat::Count
;
}
bool isFloat(TextureFormat::Enum _format)
{
return uint8_t(bx::EncodingType::Float) == s_imageBlockInfo[_format].encoding;
}
uint8_t getBitsPerPixel(TextureFormat::Enum _format)
{
return s_imageBlockInfo[_format].bitsPerPixel;
}
const ImageBlockInfo& getBlockInfo(TextureFormat::Enum _format)
{
return s_imageBlockInfo[_format];
}
uint8_t getBlockSize(TextureFormat::Enum _format)
{
return s_imageBlockInfo[_format].blockSize;
}
const char* getName(TextureFormat::Enum _format)
{
if (_format >= TextureFormat::Count)
{
return "Unknown?!";
}
return s_textureFormatName[_format];
}
TextureFormat::Enum getFormat(const char* _name)
{
for (uint32_t ii = 0; ii < TextureFormat::Count; ++ii)
{
const TextureFormat::Enum fmt = TextureFormat::Enum(ii);
if (isValid(fmt) )
{
if (0 == bx::strCmpI(s_textureFormatName[ii], _name) )
{
return fmt;
}
}
}
return TextureFormat::Unknown;
}
uint8_t imageGetNumMips(TextureFormat::Enum _format, uint16_t _width, uint16_t _height, uint16_t _depth)
{
const ImageBlockInfo& blockInfo = getBlockInfo(_format);
const uint16_t blockWidth = blockInfo.blockWidth;
const uint16_t blockHeight = blockInfo.blockHeight;
const uint16_t minBlockX = blockInfo.minBlockX;
const uint16_t minBlockY = blockInfo.minBlockY;
_width = bx::max<uint16_t>(blockWidth * minBlockX, ( (_width + blockWidth - 1) / blockWidth )*blockWidth);
_height = bx::max<uint16_t>(blockHeight * minBlockY, ( (_height + blockHeight - 1) / blockHeight)*blockHeight);
_depth = bx::max<uint16_t>(1, _depth);
uint8_t numMips = calcNumMips(true, _width, _height, _depth);
return numMips;
}
uint32_t imageGetSize(TextureInfo* _info, uint16_t _width, uint16_t _height, uint16_t _depth, bool _cubeMap, bool _hasMips, uint16_t _numLayers, TextureFormat::Enum _format)
{
const ImageBlockInfo& blockInfo = getBlockInfo(_format);
const uint8_t bpp = blockInfo.bitsPerPixel;
const uint16_t blockWidth = blockInfo.blockWidth;
const uint16_t blockHeight = blockInfo.blockHeight;
const uint16_t minBlockX = blockInfo.minBlockX;
const uint16_t minBlockY = blockInfo.minBlockY;
const uint8_t blockSize = blockInfo.blockSize;
_width = bx::max<uint16_t>(blockWidth * minBlockX, ( (_width + blockWidth - 1) / blockWidth)*blockWidth);
_height = bx::max<uint16_t>(blockHeight * minBlockY, ( (_height + blockHeight - 1) / blockHeight)*blockHeight);
_depth = bx::max<uint16_t>(1, _depth);
const uint8_t numMips = calcNumMips(_hasMips, _width, _height, _depth);
const uint32_t sides = _cubeMap ? 6 : 1;
uint32_t width = _width;
uint32_t height = _height;
uint32_t depth = _depth;
uint32_t size = 0;
for (uint32_t lod = 0; lod < numMips; ++lod)
{
width = bx::max<uint32_t>(blockWidth * minBlockX, ( (width + blockWidth - 1) / blockWidth )*blockWidth);
height = bx::max<uint32_t>(blockHeight * minBlockY, ( (height + blockHeight - 1) / blockHeight)*blockHeight);
depth = bx::max<uint32_t>(1, depth);
size += uint32_t(uint64_t(width/blockWidth * height/blockHeight * depth)*blockSize * sides);
width >>= 1;
height >>= 1;
depth >>= 1;
}
size *= _numLayers;
if (NULL != _info)
{
_info->format = _format;
_info->width = _width;
_info->height = _height;
_info->depth = _depth;
_info->numMips = numMips;
_info->numLayers = _numLayers;
_info->cubeMap = _cubeMap;
_info->storageSize = size;
_info->bitsPerPixel = bpp;
}
return size;
}
BX_NO_INLINE void imageSolid(void* _dst, uint32_t _width, uint32_t _height, uint32_t _solid)
{
uint32_t* dst = (uint32_t*)_dst;
for (uint32_t ii = 0, num = _width*_height; ii < num; ++ii)
{
*dst++ = _solid;
}
}
BX_NO_INLINE void imageCheckerboard(void* _dst, uint32_t _width, uint32_t _height, uint32_t _step, uint32_t _0, uint32_t _1)
{
uint32_t* dst = (uint32_t*)_dst;
for (uint32_t yy = 0; yy < _height; ++yy)
{
for (uint32_t xx = 0; xx < _width; ++xx)
{
uint32_t abgr = ( (xx/_step)&1) ^ ( (yy/_step)&1) ? _1 : _0;
*dst++ = abgr;
}
}
}
void imageRgba8Downsample2x2Ref(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, uint32_t _dstPitch, const void* _src)
{
const uint32_t dstWidth = _width/2;
const uint32_t dstHeight = _height/2;
if (0 == dstWidth
|| 0 == dstHeight)
{
return;
}
const uint8_t* src = (const uint8_t*)_src;
for (uint32_t zz = 0; zz < _depth; ++zz)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
uint8_t* dst = (uint8_t*)_dst + _dstPitch*yy;
const uint8_t* rgba = src;
for (uint32_t xx = 0; xx < dstWidth; ++xx, rgba += 8, dst += 4)
{
float rr = bx::toLinear(rgba[ 0]);
float gg = bx::toLinear(rgba[ 1]);
float bb = bx::toLinear(rgba[ 2]);
float aa = rgba[ 3];
rr += bx::toLinear(rgba[ 4]);
gg += bx::toLinear(rgba[ 5]);
bb += bx::toLinear(rgba[ 6]);
aa += rgba[ 7];
rr += bx::toLinear(rgba[_srcPitch+0]);
gg += bx::toLinear(rgba[_srcPitch+1]);
bb += bx::toLinear(rgba[_srcPitch+2]);
aa += rgba[_srcPitch+3];
rr += bx::toLinear(rgba[_srcPitch+4]);
gg += bx::toLinear(rgba[_srcPitch+5]);
bb += bx::toLinear(rgba[_srcPitch+6]);
aa += rgba[_srcPitch+7];
rr *= 0.25f;
gg *= 0.25f;
bb *= 0.25f;
aa *= 0.25f;
rr = bx::toGamma(rr);
gg = bx::toGamma(gg);
bb = bx::toGamma(bb);
dst[0] = (uint8_t)rr;
dst[1] = (uint8_t)gg;
dst[2] = (uint8_t)bb;
dst[3] = (uint8_t)aa;
}
}
}
}
BX_SIMD_INLINE bx::simd128_t simd_to_linear(bx::simd128_t _a)
{
using namespace bx;
const simd128_t f12_92 = simd_ld(12.92f, 12.92f, 12.92f, 1.0f);
const simd128_t f0_055 = simd_ld(0.055f, 0.055f, 0.055f, 0.0f);
const simd128_t f1_055 = simd_ld(1.055f, 1.055f, 1.055f, 1.0f);
const simd128_t f2_4 = simd_ld(2.4f, 2.4f, 2.4f, 1.0f);
const simd128_t f0_04045 = simd_ld(0.04045f, 0.04045f, 0.04045f, 0.0f);
const simd128_t lo = simd_div(_a, f12_92);
const simd128_t tmp0 = simd_add(_a, f0_055);
const simd128_t tmp1 = simd_div(tmp0, f1_055);
const simd128_t hi = simd_pow(tmp1, f2_4);
const simd128_t mask = simd_cmple(_a, f0_04045);
const simd128_t result = simd_selb(mask, hi, lo);
return result;
}
BX_SIMD_INLINE bx::simd128_t simd_to_gamma(bx::simd128_t _a)
{
using namespace bx;
const simd128_t f12_92 = simd_ld(12.92f, 12.92f, 12.92f, 1.0f);
const simd128_t f0_055 = simd_ld(0.055f, 0.055f, 0.055f, 0.0f);
const simd128_t f1_055 = simd_ld(1.055f, 1.055f, 1.055f, 1.0f);
const simd128_t f1o2_4 = simd_ld(1.0f/2.4f, 1.0f/2.4f, 1.0f/2.4f, 1.0f);
const simd128_t f0_0031308 = simd_ld(0.0031308f, 0.0031308f, 0.0031308f, 0.0f);
const simd128_t lo = simd_mul(_a, f12_92);
const simd128_t absa = simd_abs(_a);
const simd128_t tmp0 = simd_pow(absa, f1o2_4);
const simd128_t tmp1 = simd_mul(tmp0, f1_055);
const simd128_t hi = simd_sub(tmp1, f0_055);
const simd128_t mask = simd_cmple(_a, f0_0031308);
const simd128_t result = simd_selb(mask, hi, lo);
return result;
}
void imageRgba8Downsample2x2(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, uint32_t _dstPitch, const void* _src)
{
const uint32_t dstWidth = _width/2;
const uint32_t dstHeight = _height/2;
if (0 == dstWidth
|| 0 == dstHeight)
{
return;
}
const uint8_t* src = (const uint8_t*)_src;
using namespace bx;
const simd128_t unpack = simd_ld(1.0f, 1.0f/256.0f, 1.0f/65536.0f, 1.0f/16777216.0f);
const simd128_t pack = simd_ld(1.0f, 256.0f*0.5f, 65536.0f, 16777216.0f*0.5f);
const simd128_t umask = simd_ild(0xff, 0xff00, 0xff0000, 0xff000000);
const simd128_t pmask = simd_ild(0xff, 0x7f80, 0xff0000, 0x7f800000);
const simd128_t wflip = simd_ild(0, 0, 0, 0x80000000);
const simd128_t wadd = simd_ld(0.0f, 0.0f, 0.0f, 32768.0f*65536.0f);
const simd128_t quater = simd_splat(0.25f);
for (uint32_t zz = 0; zz < _depth; ++zz)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
uint8_t* dst = (uint8_t*)_dst + _dstPitch*yy;
const uint8_t* rgba = src;
for (uint32_t xx = 0; xx < dstWidth; ++xx, rgba += 8, dst += 4)
{
const simd128_t abgr0 = simd_splat(rgba);
const simd128_t abgr1 = simd_splat(rgba+4);
const simd128_t abgr2 = simd_splat(rgba+_srcPitch);
const simd128_t abgr3 = simd_splat(rgba+_srcPitch+4);
const simd128_t abgr0m = simd_and(abgr0, umask);
const simd128_t abgr1m = simd_and(abgr1, umask);
const simd128_t abgr2m = simd_and(abgr2, umask);
const simd128_t abgr3m = simd_and(abgr3, umask);
const simd128_t abgr0x = simd_xor(abgr0m, wflip);
const simd128_t abgr1x = simd_xor(abgr1m, wflip);
const simd128_t abgr2x = simd_xor(abgr2m, wflip);
const simd128_t abgr3x = simd_xor(abgr3m, wflip);
const simd128_t abgr0f = simd_itof(abgr0x);
const simd128_t abgr1f = simd_itof(abgr1x);
const simd128_t abgr2f = simd_itof(abgr2x);
const simd128_t abgr3f = simd_itof(abgr3x);
const simd128_t abgr0c = simd_add(abgr0f, wadd);
const simd128_t abgr1c = simd_add(abgr1f, wadd);
const simd128_t abgr2c = simd_add(abgr2f, wadd);
const simd128_t abgr3c = simd_add(abgr3f, wadd);
const simd128_t abgr0n = simd_mul(abgr0c, unpack);
const simd128_t abgr1n = simd_mul(abgr1c, unpack);
const simd128_t abgr2n = simd_mul(abgr2c, unpack);
const simd128_t abgr3n = simd_mul(abgr3c, unpack);
const simd128_t abgr0l = simd_to_linear(abgr0n);
const simd128_t abgr1l = simd_to_linear(abgr1n);
const simd128_t abgr2l = simd_to_linear(abgr2n);
const simd128_t abgr3l = simd_to_linear(abgr3n);
const simd128_t sum0 = simd_add(abgr0l, abgr1l);
const simd128_t sum1 = simd_add(abgr2l, abgr3l);
const simd128_t sum2 = simd_add(sum0, sum1);
const simd128_t avg0 = simd_mul(sum2, quater);
const simd128_t avg1 = simd_to_gamma(avg0);
const simd128_t avg2 = simd_mul(avg1, pack);
const simd128_t ftoi0 = simd_ftoi(avg2);
const simd128_t ftoi1 = simd_and(ftoi0, pmask);
const simd128_t zwxy = simd_swiz_zwxy(ftoi1);
const simd128_t tmp0 = simd_or(ftoi1, zwxy);
const simd128_t yyyy = simd_swiz_yyyy(tmp0);
const simd128_t tmp1 = simd_iadd(yyyy, yyyy);
const simd128_t result = simd_or(tmp0, tmp1);
simd_stx(dst, result);
}
}
}
}
void imageRgba32fToLinear(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
uint8_t* dst = ( uint8_t*)_dst;
const uint8_t* src = (const uint8_t*)_src;
for (uint32_t zz = 0; zz < _depth; ++zz)
{
for (uint32_t yy = 0; yy < _height; ++yy, src += _srcPitch, dst += _width*16)
{
for (uint32_t xx = 0; xx < _width; ++xx)
{
const uint32_t offset = xx * 16;
float* fd = ( float*)(dst + offset);
const float* fs = (const float*)(src + offset);
fd[0] = bx::toLinear(fs[0]);
fd[1] = bx::toLinear(fs[1]);
fd[2] = bx::toLinear(fs[2]);
fd[3] = fs[3];
}
}
}
}
void imageRgba32fToLinear(ImageContainer* _imageContainer)
{
const uint16_t numSides = _imageContainer->m_numLayers * (_imageContainer->m_cubeMap ? 6 : 1);
for (uint16_t side = 0; side < numSides; ++side)
{
ImageMip mip;
imageGetRawData(*_imageContainer, side, 0, _imageContainer->m_data, _imageContainer->m_size, mip);
const uint32_t pitch = _imageContainer->m_width*16;
const uint32_t slice = _imageContainer->m_height*pitch;
for (uint32_t zz = 0, depth = _imageContainer->m_depth; zz < depth; ++zz)
{
const uint32_t srcDataStep = uint32_t(bx::floor(zz * _imageContainer->m_depth / float(depth) ) );
const uint8_t* srcData = &mip.m_data[srcDataStep*slice];
imageRgba32fToLinear(const_cast<uint8_t*>(srcData), mip.m_width, mip.m_height, 1, pitch, srcData);
}
}
}
void imageRgba32fToGamma(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
uint8_t* dst = ( uint8_t*)_dst;
const uint8_t* src = (const uint8_t*)_src;
for (uint32_t zz = 0; zz < _depth; ++zz)
{
for (uint32_t yy = 0; yy < _height; ++yy, src += _srcPitch, dst += _width*16)
{
for (uint32_t xx = 0; xx < _width; ++xx)
{
const uint32_t offset = xx * 16;
float* fd = ( float*)(dst + offset);
const float* fs = (const float*)(src + offset);
fd[0] = bx::toGamma(fs[0]);
fd[1] = bx::toGamma(fs[1]);
fd[2] = bx::toGamma(fs[2]);
fd[3] = fs[3];
}
}
}
}
void imageRgba32fToGamma(ImageContainer* _imageContainer)
{
const uint16_t numSides = _imageContainer->m_numLayers * (_imageContainer->m_cubeMap ? 6 : 1);
for (uint16_t side = 0; side < numSides; ++side)
{
ImageMip mip;
imageGetRawData(*_imageContainer, side, 0, _imageContainer->m_data, _imageContainer->m_size, mip);
const uint32_t pitch = _imageContainer->m_width*16;
const uint32_t slice = _imageContainer->m_height*pitch;
for (uint32_t zz = 0, depth = _imageContainer->m_depth; zz < depth; ++zz)
{
const uint32_t srcDataStep = uint32_t(bx::floor(zz * _imageContainer->m_depth / float(depth) ) );
const uint8_t* srcData = &mip.m_data[srcDataStep*slice];
imageRgba32fToGamma(const_cast<uint8_t*>(srcData), mip.m_width, mip.m_height, 1, pitch, srcData);
}
}
}
void imageRgba32fLinearDownsample2x2Ref(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
const uint32_t dstWidth = _width/2;
const uint32_t dstHeight = _height/2;
const uint32_t dstDepth = _depth/2;
if (0 == dstWidth
|| 0 == dstHeight)
{
return;
}
const uint8_t* src = (const uint8_t*)_src;
uint8_t* dst = (uint8_t*)_dst;
if (0 == dstDepth)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_srcPitch];
for (uint32_t xx = 0; xx < dstWidth; ++xx, rgba0 += 8, rgba1 += 8, dst += 16)
{
float xyz[4];
xyz[0] = rgba0[0];
xyz[1] = rgba0[1];
xyz[2] = rgba0[2];
xyz[3] = rgba0[3];
xyz[0] += rgba0[4];
xyz[1] += rgba0[5];
xyz[2] += rgba0[6];
xyz[3] += rgba0[7];
xyz[0] += rgba1[0];
xyz[1] += rgba1[1];
xyz[2] += rgba1[2];
xyz[3] += rgba1[3];
xyz[0] += rgba1[4];
xyz[1] += rgba1[5];
xyz[2] += rgba1[6];
xyz[3] += rgba1[7];
xyz[0] *= 1.0f/4.0f;
xyz[1] *= 1.0f/4.0f;
xyz[2] *= 1.0f/4.0f;
xyz[3] *= 1.0f/4.0f;
bx::packRgba32F(dst, xyz);
}
}
}
else
{
const uint32_t slicePitch = _srcPitch*_height;
for (uint32_t zz = 0; zz < dstDepth; ++zz, src += slicePitch)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_srcPitch];
const float* rgba2 = (const float*)&src[slicePitch];
const float* rgba3 = (const float*)&src[slicePitch+_srcPitch];
for (uint32_t xx = 0
; xx < dstWidth
; ++xx, rgba0 += 8, rgba1 += 8, rgba2 += 8, rgba3 += 8, dst += 16
)
{
float xyz[4];
xyz[0] = rgba0[0];
xyz[1] = rgba0[1];
xyz[2] = rgba0[2];
xyz[3] = rgba0[3];
xyz[0] += rgba0[4];
xyz[1] += rgba0[5];
xyz[2] += rgba0[6];
xyz[3] += rgba0[7];
xyz[0] += rgba1[0];
xyz[1] += rgba1[1];
xyz[2] += rgba1[2];
xyz[3] += rgba1[3];
xyz[0] += rgba1[4];
xyz[1] += rgba1[5];
xyz[2] += rgba1[6];
xyz[3] += rgba1[7];
xyz[0] += rgba2[0];
xyz[1] += rgba2[1];
xyz[2] += rgba2[2];
xyz[3] += rgba2[3];
xyz[0] += rgba2[4];
xyz[1] += rgba2[5];
xyz[2] += rgba2[6];
xyz[3] += rgba2[7];
xyz[0] += rgba3[0];
xyz[1] += rgba3[1];
xyz[2] += rgba3[2];
xyz[3] += rgba3[3];
xyz[0] += rgba3[4];
xyz[1] += rgba3[5];
xyz[2] += rgba3[6];
xyz[3] += rgba3[7];
xyz[0] *= 1.0f/8.0f;
xyz[1] *= 1.0f/8.0f;
xyz[2] *= 1.0f/8.0f;
xyz[3] *= 1.0f/8.0f;
bx::packRgba32F(dst, xyz);
}
}
}
}
}
void imageRgba32fLinearDownsample2x2(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
imageRgba32fLinearDownsample2x2Ref(_dst, _width, _height, _depth, _srcPitch, _src);
}
void imageRgba32fDownsample2x2Ref(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
const uint32_t dstWidth = _width/2;
const uint32_t dstHeight = _height/2;
const uint32_t dstDepth = _depth/2;
if (0 == dstWidth
|| 0 == dstHeight)
{
return;
}
const uint8_t* src = (const uint8_t*)_src;
uint8_t* dst = (uint8_t*)_dst;
if (0 == dstDepth)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_srcPitch];
for (uint32_t xx = 0; xx < dstWidth; ++xx, rgba0 += 8, rgba1 += 8, dst += 16)
{
float xyz[4];
xyz[0] = bx::toLinear(rgba0[0]);
xyz[1] = bx::toLinear(rgba0[1]);
xyz[2] = bx::toLinear(rgba0[2]);
xyz[3] = rgba0[3];
xyz[0] += bx::toLinear(rgba0[4]);
xyz[1] += bx::toLinear(rgba0[5]);
xyz[2] += bx::toLinear(rgba0[6]);
xyz[3] += rgba0[7];
xyz[0] += bx::toLinear(rgba1[0]);
xyz[1] += bx::toLinear(rgba1[1]);
xyz[2] += bx::toLinear(rgba1[2]);
xyz[3] += rgba1[3];
xyz[0] += bx::toLinear(rgba1[4]);
xyz[1] += bx::toLinear(rgba1[5]);
xyz[2] += bx::toLinear(rgba1[6]);
xyz[3] += rgba1[7];
xyz[0] = bx::toGamma(xyz[0]/4.0f);
xyz[1] = bx::toGamma(xyz[1]/4.0f);
xyz[2] = bx::toGamma(xyz[2]/4.0f);
xyz[3] = xyz[3]/4.0f;
bx::packRgba32F(dst, xyz);
}
}
}
else
{
const uint32_t slicePitch = _srcPitch*_height;
for (uint32_t zz = 0; zz < dstDepth; ++zz, src += slicePitch)
{
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_srcPitch];
const float* rgba2 = (const float*)&src[slicePitch];
const float* rgba3 = (const float*)&src[slicePitch+_srcPitch];
for (uint32_t xx = 0
; xx < dstWidth
; ++xx, rgba0 += 8, rgba1 += 8, rgba2 += 8, rgba3 += 8, dst += 16
)
{
float xyz[4];
xyz[0] = bx::toLinear(rgba0[0]);
xyz[1] = bx::toLinear(rgba0[1]);
xyz[2] = bx::toLinear(rgba0[2]);
xyz[3] = rgba0[3];
xyz[0] += bx::toLinear(rgba0[4]);
xyz[1] += bx::toLinear(rgba0[5]);
xyz[2] += bx::toLinear(rgba0[6]);
xyz[3] += rgba0[7];
xyz[0] += bx::toLinear(rgba1[0]);
xyz[1] += bx::toLinear(rgba1[1]);
xyz[2] += bx::toLinear(rgba1[2]);
xyz[3] += rgba1[3];
xyz[0] += bx::toLinear(rgba1[4]);
xyz[1] += bx::toLinear(rgba1[5]);
xyz[2] += bx::toLinear(rgba1[6]);
xyz[3] += rgba1[7];
xyz[0] += bx::toLinear(rgba2[0]);
xyz[1] += bx::toLinear(rgba2[1]);
xyz[2] += bx::toLinear(rgba2[2]);
xyz[3] += rgba2[3];
xyz[0] += bx::toLinear(rgba2[4]);
xyz[1] += bx::toLinear(rgba2[5]);
xyz[2] += bx::toLinear(rgba2[6]);
xyz[3] += rgba2[7];
xyz[0] += bx::toLinear(rgba3[0]);
xyz[1] += bx::toLinear(rgba3[1]);
xyz[2] += bx::toLinear(rgba3[2]);
xyz[3] += rgba3[3];
xyz[0] += bx::toLinear(rgba3[4]);
xyz[1] += bx::toLinear(rgba3[5]);
xyz[2] += bx::toLinear(rgba3[6]);
xyz[3] += rgba3[7];
xyz[0] = bx::toGamma(xyz[0]/8.0f);
xyz[1] = bx::toGamma(xyz[1]/8.0f);
xyz[2] = bx::toGamma(xyz[2]/8.0f);
xyz[3] = xyz[3]/8.0f;
bx::packRgba32F(dst, xyz);
}
}
}
}
}
void imageRgba32fDownsample2x2(void* _dst, uint32_t _width, uint32_t _height, uint32_t _depth, uint32_t _srcPitch, const void* _src)
{
imageRgba32fDownsample2x2Ref(_dst, _width, _height, _depth, _srcPitch, _src);
}
void imageRgba32fDownsample2x2NormalMapRef(void* _dst, uint32_t _width, uint32_t _height, uint32_t _srcPitch, uint32_t _dstPitch, const void* _src)
{
const uint32_t dstWidth = _width/2;
const uint32_t dstHeight = _height/2;
if (0 == dstWidth
|| 0 == dstHeight)
{
return;
}
const uint8_t* src = (const uint8_t*)_src;
for (uint32_t yy = 0, ystep = _srcPitch*2; yy < dstHeight; ++yy, src += ystep)
{
const float* rgba0 = (const float*)&src[0];
const float* rgba1 = (const float*)&src[_srcPitch];
uint8_t* dst = (uint8_t*)_dst + _dstPitch*yy;
for (uint32_t xx = 0; xx < dstWidth; ++xx, rgba0 += 8, rgba1 += 8, dst += 16)
{
float xyz[3];
xyz[0] = rgba0[0];
xyz[1] = rgba0[1];
xyz[2] = rgba0[2];
xyz[0] += rgba0[4];
xyz[1] += rgba0[5];
xyz[2] += rgba0[6];
xyz[0] += rgba1[0];
xyz[1] += rgba1[1];
xyz[2] += rgba1[2];
xyz[0] += rgba1[4];
xyz[1] += rgba1[5];
xyz[2] += rgba1[6];
bx::store(dst, bx::normalize(bx::load<bx::Vec3>(xyz) ) );
}
}
}
void imageRgba32fDownsample2x2NormalMap(void* _dst, uint32_t _width, uint32_t _height, uint32_t _srcPitch, uint32_t _dstPitch, const void* _src)
{
imageRgba32fDownsample2x2NormalMapRef(_dst, _width, _height, _srcPitch, _dstPitch, _src);
}
void imageSwizzleBgra8Ref(void* _dst, uint32_t _dstPitch, uint32_t _width, uint32_t _height, const void* _src, uint32_t _srcPitch)
{
const uint8_t* srcData = (uint8_t*) _src;
uint8_t* dstData = (uint8_t*)_dst;
for (uint32_t yy = 0; yy < _height; ++yy, srcData += _srcPitch, dstData += _dstPitch)
{
const uint8_t* src = srcData;
uint8_t* dst = dstData;
for (uint32_t xx = 0; xx < _width; ++xx, src += 4, dst += 4)
{
uint8_t rr = src[0];
uint8_t gg = src[1];
uint8_t bb = src[2];
uint8_t aa = src[3];
dst[0] = bb;
dst[1] = gg;
dst[2] = rr;
dst[3] = aa;
}
}
}
void imageSwizzleBgra8(void* _dst, uint32_t _dstPitch, uint32_t _width, uint32_t _height, const void* _src, uint32_t _srcPitch)
{
// Test can we do four 4-byte pixels at the time.
if (0 != (_width&0x3)
|| _width < 4
|| !bx::isAligned(_src, 16)
|| !bx::isAligned(_dst, 16) )
{
BX_WARN(false, "Image swizzle is taking slow path.");