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irrlicht-archive/source/Irrlicht/CSoftwareTexture2.cpp
cutealien fa0b1cb509 Merging r6145 through r6171 from trunk to ogl-es branch 
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6172 dfc29bdd-3216-0410-991c-e03cc46cb475
2020-12-19 15:03:11 +00:00

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// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "IrrCompileConfig.h"
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
#include "SoftwareDriver2_compile_config.h"
#include "SoftwareDriver2_helper.h"
#include "CSoftwareTexture2.h"
#include "CSoftwareDriver2.h"
#include "CBlit.h"
#include "os.h"
namespace irr
{
namespace video
{
//! stretches srcRect src to dstRect dst, applying a sliding window box filter in linear color space (sRGB->linear->sRGB)
void Resample_subSampling(eBlitter op, video::IImage* dst, const core::rect<s32>* dstRect, const video::IImage* src, const core::rect<s32>* srcRect, size_t flags);
//nearest pow of 2 ( 257 will be 256 not 512 )
static inline core::dimension2d<u32> getOptimalSize(const core::dimension2d<u32>& original, const u32 allowNonPowerOfTwo, const u32 maxSize)
{
u32 w, h;
if (allowNonPowerOfTwo)
{
w = original.Width;
h = original.Height;
}
else
{
w = 1;
while (w * 2 < original.Width) w *= 2;
if (w * 2 - original.Width < original.Width - w) w *= 2;
h = 1;
while (h * 2 < original.Height) h *= 2;
if (h * 2 - original.Height < original.Height - h) h *= 2;
}
if (maxSize && w > maxSize) w = maxSize;
if (maxSize && h > maxSize) h = maxSize;
return core::dimension2d<u32>(w, h);
}
//! constructor
CSoftwareTexture2::CSoftwareTexture2(IImage* image, const io::path& name, u32 flags, CBurningVideoDriver* driver)
: ITexture(name
#if !defined(PATCH_SUPERTUX_8_0_1_with_1_9_0)
, ETT_2D
#endif
)
, MipMapLOD(0), Flags(flags), Driver(driver)
{
#ifdef _DEBUG
setDebugName("CSoftwareTexture2");
#endif
#if SOFTWARE_DRIVER_2_MIPMAPPING_MAX <= 1
Flags &= ~(GEN_MIPMAP | GEN_MIPMAP_AUTO);
#endif
//set baseclass properties
DriverType = EDT_BURNINGSVIDEO;
ColorFormat = (Flags & IS_RENDERTARGET) ? SOFTWARE_DRIVER_2_RENDERTARGET_COLOR_FORMAT : SOFTWARE_DRIVER_2_TEXTURE_COLOR_FORMAT;
IsRenderTarget = (Flags & IS_RENDERTARGET) != 0;
HasMipMaps = (Flags & GEN_MIPMAP) != 0;
MipMap0_Area[0] = 1;
MipMap0_Area[1] = 1;
LodBIAS = 1.f;
for (size_t i = 0; i < array_size(MipMap); ++i) MipMap[i] = 0;
if (!image) return;
OriginalSize = image->getDimension();
OriginalColorFormat = image->getColorFormat();
#if defined(IRRLICHT_sRGB)
if (Flags & IMAGE_IS_LINEAR) image->set_sRGB(0);
#else
//guessing linear image
if (name.find("light") >= 0 ||
name.find("bump") >= 0 ||
name.find("height") >= 0
)
{
Flags |= TEXTURE_IS_LINEAR | IMAGE_IS_LINEAR;
}
#endif
bool isCompressed = IImage::isCompressedFormat(OriginalColorFormat);
if (isCompressed)
{
os::Printer::log("Texture compression not available.", ELL_ERROR);
}
//visual studio code warning
u32 maxTexSize = SOFTWARE_DRIVER_2_TEXTURE_MAXSIZE;
#if defined(PATCH_SUPERTUX_8_0_1_with_1_9_0)
if (IsRenderTarget && name.find("RaceGUI::markers") >= 0)
{
maxTexSize = 0;
}
#endif
/*
core::dimension2d<u32> optSize(OriginalSize.getOptimalSize(
(Flags & ALLOW_NPOT) ? 0 : 1, // requirePowerOfTwo
false, // requireSquare
(Flags & ALLOW_NPOT) ? 1 : maxTexSize == SOFTWARE_DRIVER_2_TEXTURE_MAXSIZE, // larger
(Flags & ALLOW_NPOT) ? 0 : maxTexSize // maxValue
)
);
*/
core::dimension2d<u32> optSize(getOptimalSize(OriginalSize, Flags & ALLOW_NPOT, maxTexSize));
if (OriginalSize == optSize)
{
MipMap[0] = new CImage(ColorFormat, image->getDimension());
#if defined(IRRLICHT_sRGB)
MipMap[0]->set_sRGB((Flags & TEXTURE_IS_LINEAR) ? 0 : image->get_sRGB());
#endif
if (!isCompressed && image->getData())
image->copyTo(MipMap[0]);
}
else
{
MipMap[0] = new CImage(ColorFormat, optSize);
#if defined(IRRLICHT_sRGB)
MipMap[0]->set_sRGB((Flags & TEXTURE_IS_LINEAR) ? 0 : image->get_sRGB());
#endif
if (!isCompressed)
{
//image->copyToScalingBoxFilter ( MipMap[0],0, false );
Resample_subSampling(BLITTER_TEXTURE, MipMap[0], 0, image, 0, Flags);
}
// if Original Size is used for calculation ( 2D position, font) it will be wrong
//OriginalSize = optSize;
}
// Show Information about resizing
if (OriginalSize != optSize ||
( OriginalColorFormat != ColorFormat &&
!((OriginalColorFormat == ECF_R8G8B8 || OriginalColorFormat == ECF_A1R5G5B5) && ColorFormat == ECF_A8R8G8B8)
)
)
{
char buf[256];
core::stringw showName(name);
snprintf_irr(buf, sizeof(buf), "Burningvideo: Texture '%ls' reformat %ux%u,%s -> %ux%u,%s",
showName.c_str(),
OriginalSize.Width, OriginalSize.Height, ColorFormatNames[OriginalColorFormat],
optSize.Width, optSize.Height, ColorFormatNames[ColorFormat]
);
os::Printer::log(buf, ELL_DEBUG);
}
//select highest mipmap 0
regenerateMipMapLevels(image->getMipMapsData());
}
//! destructor
CSoftwareTexture2::~CSoftwareTexture2()
{
for (size_t i = 0; i < array_size(MipMap); ++i)
{
if (MipMap[i])
{
MipMap[i]->drop();
MipMap[i] = 0;
}
}
}
//! Regenerates the mip map levels of the texture. Useful after locking and
//! modifying the texture
#if !defined(PATCH_SUPERTUX_8_0_1_with_1_9_0)
void CSoftwareTexture2::regenerateMipMapLevels(void* data, u32 layer)
#else
void CSoftwareTexture2::regenerateMipMapLevels(void* data)
#endif
{
size_t i;
// release
for (i = 1; i < array_size(MipMap); ++i)
{
if (MipMap[i])
{
MipMap[i]->drop();
MipMap[i] = 0;
}
}
core::dimension2d<u32> newSize;
if (HasMipMaps && ((Flags & GEN_MIPMAP_AUTO) || 0 == data))
{
//need memory also if autogen mipmap disabled
for (i = 1; i < array_size(MipMap); ++i)
{
const core::dimension2du& upperDim = MipMap[i - 1]->getDimension();
//isotropic
newSize.Width = core::s32_max(SOFTWARE_DRIVER_2_MIPMAPPING_MIN_SIZE, upperDim.Width >> 1);
newSize.Height = core::s32_max(SOFTWARE_DRIVER_2_MIPMAPPING_MIN_SIZE, upperDim.Height >> 1);
if (upperDim == newSize)
break;
MipMap[i] = new CImage(ColorFormat, newSize);
#if defined(IRRLICHT_sRGB)
MipMap[i]->set_sRGB(MipMap[i - 1]->get_sRGB());
#endif
//MipMap[i]->fill ( 0xFFFF4040 );
//MipMap[i-1]->copyToScalingBoxFilter( MipMap[i], 0, false );
Resample_subSampling(BLITTER_TEXTURE, MipMap[i], 0, MipMap[0], 0, Flags);
}
}
else if (HasMipMaps && data)
{
//deactivated outside mipdata until TA knows how to handle this.
//query mipmap dimension
u8* mip_current = (u8*)data;
const u8* mip_end = (u8*)data;
core::dimension2d<u32> origSize = OriginalSize;
i = 1;
do
{
if (origSize.Width > 1) origSize.Width >>= 1;
if (origSize.Height > 1) origSize.Height >>= 1;
mip_end += IImage::getDataSizeFromFormat(OriginalColorFormat, origSize.Width, origSize.Height);
i += 1;
} while ((origSize.Width != 1 || origSize.Height != 1) && i < array_size(MipMap));
//TODO: this is not true
LodBIAS = i * 2.f;
origSize = OriginalSize;
for (i = 1; i < array_size(MipMap) && mip_current < mip_end; ++i)
{
const core::dimension2du& upperDim = MipMap[i - 1]->getDimension();
//isotropic
newSize.Width = core::s32_max(SOFTWARE_DRIVER_2_MIPMAPPING_MIN_SIZE, upperDim.Width >> 1);
newSize.Height = core::s32_max(SOFTWARE_DRIVER_2_MIPMAPPING_MIN_SIZE, upperDim.Height >> 1);
if (upperDim == newSize)
break;
if (origSize.Width > 1) origSize.Width >>= 1;
if (origSize.Height > 1) origSize.Height >>= 1;
if (OriginalColorFormat != ColorFormat)
{
IImage* tmpImage = new CImage(OriginalColorFormat, origSize, mip_current, true, false);
MipMap[i] = new CImage(ColorFormat, newSize);
if (origSize == newSize)
tmpImage->copyTo(MipMap[i]);
else
tmpImage->copyToScalingBoxFilter(MipMap[i]);
tmpImage->drop();
}
else
{
if (origSize == newSize)
MipMap[i] = new CImage(ColorFormat, newSize, mip_current, false);
else
{
MipMap[i] = new CImage(ColorFormat, newSize);
IImage* tmpImage = new CImage(ColorFormat, origSize, mip_current, true, false);
tmpImage->copyToScalingBoxFilter(MipMap[i]);
tmpImage->drop();
}
}
mip_current += IImage::getDataSizeFromFormat(OriginalColorFormat, origSize.Width, origSize.Height);
}
}
//visualize mipmap
for (i = 1; i < 0 && i < array_size(MipMap); ++i)
{
static u32 color[] = {
0xFFFF0000,
0xFFFF0000,0xFF00FF00,0xFF0000FF,
0xFFFFFF00,0xFF00FFFF,0xFFFF00FF,
0xFFff6600,0xFF00ff66,0xFF6600FF,
0xFF66ff00,0xFF0066ff,0xFFff0066,
0xFF33ff00,0xFF0033ff,0xFF3300ff,
0xFF0000FF,0xFF0000FF,0xFF0000FF
};
if (MipMap[i])
{
int border = 0;
const core::dimension2du& d = MipMap[i]->getDimension();
core::rect<s32> p(0, 0, d.Width, d.Height);
SColor c((color[i & 15] & 0x00FFFFFF) | 0xFF000000);
core::rect<s32> dclip(border, border, d.Width - border, d.Height - border);
Blit(BLITTER_TEXTURE_ALPHA_COLOR_BLEND, MipMap[i], &dclip, 0, MipMap[i], &p, c.color);
}
}
//save mipmap chain
if (0)
{
char buf[256];
const char* name = getName().getPath().c_str();
int filename = 0;
//int ext = -1;
i = 0;
while (name[i])
{
if (name[i] == '/' || name[i] == '\\') filename = (s32)i + 1;
//if (name[i] == '.') ext = i;
i += 1;
}
for (i = 0; i < array_size(MipMap); ++i)
{
if (MipMap[i])
{
snprintf_irr(buf, sizeof(buf), "mip/%s_%02d.png", name + filename, (s32)i);
Driver->writeImageToFile(MipMap[i], buf);
}
}
}
calcDerivative();
}
void CSoftwareTexture2::calcDerivative()
{
//reset current MipMap
MipMapLOD = 0;
if (MipMap[0])
{
const core::dimension2du& dim = MipMap[0]->getDimension();
MipMap0_Area[0] = dim.Width;
MipMap0_Area[1] = dim.Height; // screensize of a triangle
//TA: try to mimic openGL mipmap. ( don't do this!)
//if (MipMap0_Area[0] < 32) MipMap0_Area[0] = 32;
//if (MipMap0_Area[1] < 32) MipMap0_Area[1] = 32;
Size = dim; // MipMap[MipMapLOD]->getDimension();
Pitch = MipMap[MipMapLOD]->getPitch();
}
//preCalc mipmap texel center boundaries
for (size_t i = 0; i < array_size(MipMap); ++i)
{
CSoftwareTexture2_Bound& b = TexBound[i];
if (MipMap[i])
{
const core::dimension2du& dim = MipMap[i]->getDimension();
//f32 u = 1.f / dim.Width;
//f32 v = 1.f / dim.Height;
b.w = dim.Width - 1.f;
b.h = dim.Height - 1.f;
b.cx = 0.f; //u*0.005f;
b.cy = 0.f; //v*0.005f;
}
else
{
b.w = 0.f;
b.h = 0.f;
b.cx = 0.f;
b.cy = 0.f;
}
}
}
/* Software Render Target 2 */
CSoftwareRenderTarget2::CSoftwareRenderTarget2(CBurningVideoDriver* driver) : Driver(driver)
#if defined(PATCH_SUPERTUX_8_0_1_with_1_9_0)
, IRenderTarget(0)
#endif
{
DriverType = EDT_BURNINGSVIDEO;
Texture.set_used(1);
Texture[0] = 0;
}
CSoftwareRenderTarget2::~CSoftwareRenderTarget2()
{
if (Texture[0])
Texture[0]->drop();
}
void CSoftwareRenderTarget2::setTexture(const core::array<ITexture*>& texture, ITexture* depthStencil, const core::array<E_CUBE_SURFACE>& cubeSurfaces)
{
if (Texture != texture)
{
ITexture* prevTexture = Texture[0];
bool textureDetected = false;
for (u32 i = 0; i < texture.size(); ++i)
{
if (texture[i] && texture[i]->getDriverType() == EDT_BURNINGSVIDEO)
{
Texture[0] = texture[i];
Texture[0]->grab();
textureDetected = true;
break;
}
}
if (prevTexture)
prevTexture->drop();
if (!textureDetected)
Texture[0] = 0;
}
}
static const float srgb_8bit_to_linear_float[1 << 8] = {
0.0f, 3.03527e-4f, 6.07054e-4f, 9.10581e-4f,
0.001214108f, 0.001517635f, 0.001821162f, 0.0021246888f,
0.002428216f, 0.002731743f, 0.00303527f, 0.0033465358f,
0.0036765074f, 0.004024717f, 0.004391442f, 0.0047769537f,
0.005181517f, 0.005605392f, 0.0060488335f, 0.006512091f,
0.0069954107f, 0.007499032f, 0.008023193f, 0.008568126f,
0.009134059f, 0.009721218f, 0.010329823f, 0.010960095f,
0.011612245f, 0.012286489f, 0.0129830325f, 0.013702083f,
0.014443845f, 0.015208516f, 0.015996294f, 0.016807377f,
0.017641956f, 0.018500222f, 0.019382363f, 0.020288564f,
0.021219011f, 0.022173885f, 0.023153368f, 0.024157634f,
0.025186861f, 0.026241222f, 0.027320893f, 0.02842604f,
0.029556835f, 0.030713445f, 0.031896032f, 0.033104766f,
0.034339808f, 0.035601314f, 0.036889452f, 0.038204372f,
0.039546236f, 0.0409152f, 0.04231141f, 0.04373503f,
0.045186203f, 0.046665087f, 0.048171826f, 0.049706567f,
0.051269464f, 0.05286065f, 0.05448028f, 0.056128494f,
0.057805438f, 0.059511244f, 0.06124606f, 0.06301002f,
0.06480327f, 0.066625945f, 0.068478175f, 0.0703601f,
0.07227185f, 0.07421357f, 0.07618539f, 0.07818743f,
0.08021983f, 0.082282715f, 0.084376216f, 0.086500466f,
0.08865559f, 0.09084172f, 0.093058966f, 0.09530747f,
0.097587354f, 0.09989873f, 0.10224174f, 0.10461649f,
0.107023105f, 0.10946172f, 0.111932434f, 0.11443538f,
0.11697067f, 0.119538434f, 0.122138776f, 0.12477182f,
0.12743768f, 0.13013647f, 0.13286832f, 0.13563333f,
0.13843162f, 0.14126329f, 0.14412847f, 0.14702727f,
0.14995979f, 0.15292616f, 0.15592647f, 0.15896083f,
0.16202939f, 0.1651322f, 0.1682694f, 0.17144111f,
0.1746474f, 0.17788842f, 0.18116425f, 0.18447499f,
0.18782078f, 0.19120169f, 0.19461784f, 0.19806932f,
0.20155625f, 0.20507874f, 0.20863687f, 0.21223076f,
0.21586053f, 0.21952623f, 0.22322798f, 0.2269659f,
0.23074007f, 0.23455061f, 0.2383976f, 0.24228115f,
0.24620135f, 0.2501583f, 0.25415212f, 0.25818288f,
0.2622507f, 0.26635563f, 0.27049783f, 0.27467734f,
0.2788943f, 0.28314877f, 0.28744087f, 0.29177067f,
0.2961383f, 0.3005438f, 0.30498734f, 0.30946895f,
0.31398875f, 0.3185468f, 0.32314324f, 0.32777813f,
0.33245155f, 0.33716366f, 0.34191445f, 0.3467041f,
0.35153264f, 0.35640016f, 0.36130682f, 0.36625263f,
0.3712377f, 0.37626216f, 0.38132605f, 0.38642946f,
0.3915725f, 0.39675525f, 0.4019778f, 0.40724024f,
0.41254264f, 0.4178851f, 0.4232677f, 0.42869052f,
0.43415368f, 0.4396572f, 0.44520122f, 0.45078582f,
0.45641103f, 0.46207702f, 0.4677838f, 0.4735315f,
0.4793202f, 0.48514995f, 0.4910209f, 0.496933f,
0.5028865f, 0.50888133f, 0.5149177f, 0.5209956f,
0.52711517f, 0.53327644f, 0.5394795f, 0.5457245f,
0.55201143f, 0.55834043f, 0.5647115f, 0.57112485f,
0.57758045f, 0.58407843f, 0.59061885f, 0.5972018f,
0.60382736f, 0.61049557f, 0.6172066f, 0.62396044f,
0.63075715f, 0.6375969f, 0.6444797f, 0.65140563f,
0.65837485f, 0.66538733f, 0.67244315f, 0.6795425f,
0.6866853f, 0.6938718f, 0.7011019f, 0.7083758f,
0.71569353f, 0.7230551f, 0.73046076f, 0.73791045f,
0.74540424f, 0.7529422f, 0.7605245f, 0.76815116f,
0.7758222f, 0.7835378f, 0.791298f, 0.7991027f,
0.8069523f, 0.8148466f, 0.82278574f, 0.8307699f,
0.838799f, 0.8468732f, 0.8549926f, 0.8631572f,
0.8713671f, 0.8796224f, 0.8879231f, 0.8962694f,
0.9046612f, 0.91309863f, 0.92158186f, 0.9301109f,
0.9386857f, 0.9473065f, 0.9559733f, 0.9646863f,
0.9734453f, 0.9822506f, 0.9911021f, 1.0f,
};
/*
int linear_to_srgb_8bit(const float x) {
if (x <= 0.f) return 0;
if (x >= 1.f) return 255;
const float *table = SRGB_8BIT_TO_LINEAR_FLOAT;
int y = 0;
for (int i = 128; i != 0; i >>= 1) {
if (table[y + i] <= x)
y += i;
}
if (x - table[y] <= table[y + 1] - x)
return y;
else
return y + 1;
}
*/
u32 linear_to_srgb_8bit(const float v)
{
ieee754 c;
c.f = v;
const size_t x = c.u;
const u32* table = (u32*)srgb_8bit_to_linear_float;
u32 y = 0;
y += table[y + 128] <= x ? 128 : 0;
y += table[y + 64] <= x ? 64 : 0;
y += table[y + 32] <= x ? 32 : 0;
y += table[y + 16] <= x ? 16 : 0;
y += table[y + 8] <= x ? 8 : 0;
y += table[y + 4] <= x ? 4 : 0;
y += table[y + 2] <= x ? 2 : 0;
y += table[y + 1] <= x ? 1 : 0;
return y;
}
// 2D Region half open [x0;x1[
struct absrect2
{
s32 x0;
s32 y0;
s32 x1;
s32 y1;
};
static inline int clipTest(absrect2& o, const core::rect<s32>* a, const absrect2& b)
{
if (a == 0)
{
o.x0 = b.x0;
o.y0 = b.y0;
o.x1 = b.x1;
o.y1 = b.y1;
}
else
{
o.x0 = core::s32_max(a->UpperLeftCorner.X, b.x0);
o.x1 = core::s32_min(a->LowerRightCorner.X, b.x1);
o.y0 = core::s32_max(a->UpperLeftCorner.Y, b.y0);
o.y1 = core::s32_min(a->LowerRightCorner.Y, b.y1);
}
int clipTest = 0;
clipTest |= o.x0 >= o.x1 ? 1 : 0;
clipTest |= o.y0 >= o.y1 ? 2 : 0;
return clipTest;
}
//! stretches srcRect src to dstRect dst, applying a sliding window box filter in linear color space (sRGB->linear->sRGB)
// todo: texture jumps (mip selection problem)
void Resample_subSampling(eBlitter op, video::IImage* dst, const core::rect<s32>* dstRect,
const video::IImage* src, const core::rect<s32>* srcRect, size_t flags)
{
u8* dstData = (u8*)dst->getData();
const absrect2 dst_clip = { 0,0,(s32)dst->getDimension().Width,(s32)dst->getDimension().Height };
absrect2 dc;
if (clipTest(dc, dstRect, dst_clip) || !dstData) return;
const video::ECOLOR_FORMAT dstFormat = dst->getColorFormat();
const u8* srcData = (u8*)src->getData();
const absrect2 src_clip = { 0,0,(s32)src->getDimension().Width,(s32)src->getDimension().Height };
absrect2 sc;
if (clipTest(sc, srcRect, src_clip) || !srcData) return;
const video::ECOLOR_FORMAT srcFormat = src->getColorFormat();
#if defined(IRRLICHT_sRGB)
const int dst_sRGB = dst->get_sRGB();
const int src_sRGB = src->get_sRGB();
#else
const int dst_sRGB = (flags & CSoftwareTexture2::TEXTURE_IS_LINEAR) ? 0 : 1;
const int src_sRGB = (flags & CSoftwareTexture2::IMAGE_IS_LINEAR) ? 0 : 1;
#endif
float scale[2];
scale[0] = (float)(sc.x1 - sc.x0) / (float)(dc.x1 - dc.x0);
scale[1] = (float)(sc.y1 - sc.y0) / (float)(dc.y1 - dc.y0);
const float rs = 1.f / (scale[0] * scale[1]);
float sum[4];
u32 sbgra = 0;
float f[4];
int fi[4];
f[3] = (float)sc.y0;
for (int dy = dc.y0; dy < dc.y1; ++dy)
{
f[1] = f[3];
f[3] = sc.y0 + (dy + 1 - dc.y0) * scale[1];
if (f[3] >= sc.y1) f[3] = sc.y1 - 0.001f; //todo:1.f/dim should be enough
f[2] = (float)sc.x0;
for (int dx = dc.x0; dx < dc.x1; ++dx)
{
f[0] = f[2];
f[2] = sc.x0 + (dx + 1 - dc.x0) * scale[0];
if (f[2] >= sc.x1) f[2] = sc.x1 - 0.001f;
//accumulate linear color
sum[0] = 0.f;
sum[1] = 0.f;
sum[2] = 0.f;
sum[3] = 0.f;
//sample border
fi[0] = (int)(f[0]);
fi[1] = (int)(f[1]);
fi[2] = (int)(f[2]);
fi[3] = (int)(f[3]);
float w[2];
for (int fy = fi[1]; fy <= fi[3]; ++fy)
{
w[1] = 1.f;
if (fy == fi[1]) w[1] -= f[1] - fy;
if (fy == fi[3]) w[1] -= fy + 1 - f[3];
for (int fx = fi[0]; fx <= fi[2]; ++fx)
{
w[0] = 1.f;
if (fx == fi[0]) w[0] -= f[0] - fx;
if (fx == fi[2]) w[0] -= fx + 1 - f[2];
const float ws = w[1] * w[0] * rs;
switch (srcFormat)
{
case video::ECF_A1R5G5B5: sbgra = video::A1R5G5B5toA8R8G8B8(*(u16*)(srcData + (fy * src_clip.x1) * 2 + (fx * 2))); break;
case video::ECF_R5G6B5: sbgra = video::R5G6B5toA8R8G8B8(*(u16*)(srcData + (fy * src_clip.x1) * 2 + (fx * 2))); break;
case video::ECF_A8R8G8B8: sbgra = *(u32*)(srcData + (fy * src_clip.x1) * 4 + (fx * 4)); break;
case video::ECF_R8G8B8:
{
const u8* p = srcData + (fy * src_clip.x1) * 3 + (fx * 3);
sbgra = 0xFF000000 | p[0] << 16 | p[1] << 8 | p[2];
} break;
default: break;
}
if (src_sRGB)
{
sum[0] += srgb_8bit_to_linear_float[(sbgra) & 0xFF] * ws;
sum[1] += srgb_8bit_to_linear_float[(sbgra >> 8) & 0xFF] * ws;
sum[2] += srgb_8bit_to_linear_float[(sbgra >> 16) & 0xFF] * ws;
sum[3] += ((sbgra >> 24) & 0xFF) * ws;
}
else
{
sum[0] += ((sbgra) & 0xFF) * ws;
sum[1] += ((sbgra >> 8) & 0xFF) * ws;
sum[2] += ((sbgra >> 16) & 0xFF) * ws;
sum[3] += ((sbgra >> 24) & 0xFF) * ws;
}
}
}
switch (op)
{
case BLITTER_TEXTURE_ALPHA_BLEND:
case BLITTER_TEXTURE_ALPHA_COLOR_BLEND:
break;
default:
break;
}
if (dst_sRGB)
{
sbgra = linear_to_srgb_8bit(sum[0]) |
linear_to_srgb_8bit(sum[1]) << 8 |
linear_to_srgb_8bit(sum[2]) << 16 |
(u32)(sum[3]) << 24;
}
else
{
sbgra = (u32)(sum[0]) |
(u32)(sum[1]) << 8 |
(u32)(sum[2]) << 16 |
(u32)(sum[3]) << 24;
}
switch (dstFormat)
{
case video::ECF_A8R8G8B8: *(u32*)(dstData + (dy * dst_clip.x1) * 4 + (dx * 4)) = sbgra; break;
case video::ECF_R8G8B8:
{
u8* p = dstData + (dy * dst_clip.x1) * 3 + (dx * 3);
p[2] = (sbgra) & 0xFF;
p[1] = (sbgra >> 8) & 0xFF;
p[0] = (sbgra >> 16) & 0xFF;
} break;
case video::ECF_A1R5G5B5: *(u16*)(dstData + (dy * dst_clip.x1) * 2 + (dx * 2)) = video::A8R8G8B8toA1R5G5B5(sbgra); break;
case video::ECF_R5G6B5: *(u16*)(dstData + (dy * dst_clip.x1) * 2 + (dx * 2)) = video::A8R8G8B8toR5G6B5(sbgra); break;
default:
break;
}
}
}
}
} // end namespace video
} // end namespace irr
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
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