forked from Mirrorlandia_minetest/irrlicht
2d63fdba3d
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6337 dfc29bdd-3216-0410-991c-e03cc46cb475
448 lines
11 KiB
C++
448 lines
11 KiB
C++
// 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 "CImage.h"
|
|
#include "irrString.h"
|
|
#include "CColorConverter.h"
|
|
#include "CBlit.h"
|
|
#include "os.h"
|
|
#include "SoftwareDriver2_helper.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
|
|
//! Constructor from raw data
|
|
CImage::CImage(ECOLOR_FORMAT format, const core::dimension2d<u32>& size, void* data,
|
|
bool ownForeignMemory, bool deleteMemory) : IImage(format, size, deleteMemory)
|
|
{
|
|
if (ownForeignMemory)
|
|
{
|
|
Data = (u8*)data;
|
|
}
|
|
else
|
|
{
|
|
const u32 dataSize = getDataSizeFromFormat(Format, Size.Width, Size.Height);
|
|
|
|
Data = new u8[align_next(dataSize,16)];
|
|
memcpy(Data, data, dataSize);
|
|
DeleteMemory = true;
|
|
}
|
|
}
|
|
|
|
|
|
//! Constructor of empty image
|
|
CImage::CImage(ECOLOR_FORMAT format, const core::dimension2d<u32>& size) : IImage(format, size, true)
|
|
{
|
|
Data = new u8[align_next(getDataSizeFromFormat(Format, Size.Width, Size.Height),16)];
|
|
DeleteMemory = true;
|
|
}
|
|
|
|
|
|
//! sets a pixel
|
|
void CImage::setPixel(u32 x, u32 y, const SColor &color, bool blend)
|
|
{
|
|
if (x >= Size.Width || y >= Size.Height)
|
|
return;
|
|
|
|
switch(Format)
|
|
{
|
|
case ECF_A1R5G5B5:
|
|
{
|
|
u16 * dest = (u16*) (Data + ( y * Pitch ) + ( x << 1 ));
|
|
*dest = video::A8R8G8B8toA1R5G5B5( color.color );
|
|
} break;
|
|
|
|
case ECF_R5G6B5:
|
|
{
|
|
u16 * dest = (u16*) (Data + ( y * Pitch ) + ( x << 1 ));
|
|
*dest = video::A8R8G8B8toR5G6B5( color.color );
|
|
} break;
|
|
|
|
case ECF_R8G8B8:
|
|
{
|
|
u8* dest = Data + ( y * Pitch ) + ( x * 3 );
|
|
dest[0] = (u8)color.getRed();
|
|
dest[1] = (u8)color.getGreen();
|
|
dest[2] = (u8)color.getBlue();
|
|
} break;
|
|
|
|
case ECF_A8R8G8B8:
|
|
{
|
|
u32 * dest = (u32*) (Data + ( y * Pitch ) + ( x << 2 ));
|
|
*dest = blend ? PixelBlend32 ( *dest, color.color ) : color.color;
|
|
} break;
|
|
|
|
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
|
|
os::Printer::log("IImage::setPixel method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
|
|
case ECF_UNKNOWN:
|
|
os::Printer::log("IImage::setPixel unknown format.", ELL_WARNING);
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
//! returns a pixel
|
|
SColor CImage::getPixel(u32 x, u32 y) const
|
|
{
|
|
if (x >= Size.Width || y >= Size.Height)
|
|
return SColor(0);
|
|
|
|
switch(Format)
|
|
{
|
|
case ECF_A1R5G5B5:
|
|
return A1R5G5B5toA8R8G8B8(((u16*)Data)[y*Size.Width + x]);
|
|
case ECF_R5G6B5:
|
|
return R5G6B5toA8R8G8B8(((u16*)Data)[y*Size.Width + x]);
|
|
case ECF_A8R8G8B8:
|
|
return ((u32*)Data)[y*Size.Width + x];
|
|
case ECF_R8G8B8:
|
|
{
|
|
u8* p = Data+(y*3)*Size.Width + (x*3);
|
|
return SColor(255,p[0],p[1],p[2]);
|
|
}
|
|
|
|
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
|
|
os::Printer::log("IImage::getPixel method doesn't work with compressed images.", ELL_WARNING);
|
|
break;
|
|
|
|
case ECF_UNKNOWN:
|
|
os::Printer::log("IImage::getPixel unknown format.", ELL_WARNING);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return SColor(0);
|
|
}
|
|
|
|
|
|
//! copies this surface into another at given position
|
|
void CImage::copyTo(IImage* target, const core::position2d<s32>& pos)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyTo method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
if (!Blit(BLITTER_TEXTURE, target, 0, &pos, this, 0, 0)
|
|
&& target && pos.X == 0 && pos.Y == 0 &&
|
|
CColorConverter::canConvertFormat(Format, target->getColorFormat()))
|
|
{
|
|
// No fast blitting, but copyToScaling uses other color conversions and might work
|
|
irr::core::dimension2du dim(target->getDimension());
|
|
copyToScaling(target->getData(), dim.Width, dim.Height, target->getColorFormat(), target->getPitch());
|
|
}
|
|
}
|
|
|
|
|
|
//! copies this surface partially into another at given position
|
|
void CImage::copyTo(IImage* target, const core::position2d<s32>& pos, const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyTo method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
Blit(BLITTER_TEXTURE, target, clipRect, &pos, this, &sourceRect, 0);
|
|
}
|
|
|
|
|
|
//! copies this surface into another, using the alpha mask, a cliprect and a color to add with
|
|
void CImage::copyToWithAlpha(IImage* target, const core::position2d<s32>& pos, const core::rect<s32>& sourceRect, const SColor &color, const core::rect<s32>* clipRect, bool combineAlpha)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyToWithAlpha method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
eBlitter op = combineAlpha ? BLITTER_TEXTURE_COMBINE_ALPHA :
|
|
color.color == 0xFFFFFFFF ? BLITTER_TEXTURE_ALPHA_BLEND : BLITTER_TEXTURE_ALPHA_COLOR_BLEND;
|
|
Blit(op,target, clipRect, &pos, this, &sourceRect, color.color);
|
|
}
|
|
|
|
|
|
//! copies this surface into another, scaling it to the target image size
|
|
// note: this is very very slow.
|
|
void CImage::copyToScaling(void* target, u32 width, u32 height, ECOLOR_FORMAT format, u32 pitch)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyToScaling method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
if (!target || !width || !height)
|
|
return;
|
|
|
|
const u32 bpp=getBitsPerPixelFromFormat(format)/8;
|
|
if (0==pitch)
|
|
pitch = width*bpp;
|
|
|
|
if (Format==format && Size.Width==width && Size.Height==height)
|
|
{
|
|
if (pitch==Pitch)
|
|
{
|
|
memcpy(target, Data, height*pitch);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
u8* tgtpos = (u8*) target;
|
|
u8* srcpos = Data;
|
|
const u32 bwidth = width*bpp;
|
|
const u32 rest = pitch-bwidth;
|
|
for (u32 y=0; y<height; ++y)
|
|
{
|
|
// copy scanline
|
|
memcpy(tgtpos, srcpos, bwidth);
|
|
// clear pitch
|
|
memset(tgtpos+bwidth, 0, rest);
|
|
tgtpos += pitch;
|
|
srcpos += Pitch;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
// NOTE: Scaling is coded to keep the border pixels intact.
|
|
// Alternatively we could for example work with first pixel being taken at half step-size.
|
|
// Then we have one more step here and it would be:
|
|
// sourceXStep = (f32)(Size.Width-1) / (f32)(width);
|
|
// And sx would start at 0.5f + sourceXStep / 2.f;
|
|
// Similar for y.
|
|
// As scaling is done without any antialiasing it doesn't matter too much which outermost pixels we use and keeping
|
|
// border pixels intact is probably mostly better (with AA the other solution would be more correct).
|
|
const f32 sourceXStep = width > 1 ? (f32)(Size.Width-1) / (f32)(width-1) : 0.f;
|
|
const f32 sourceYStep = height > 1 ? (f32)(Size.Height-1) / (f32)(height-1) : 0.f;
|
|
s32 yval=0, syval=0;
|
|
f32 sy = 0.5f; // for rounding to nearest pixel
|
|
for (u32 y=0; y<height; ++y)
|
|
{
|
|
f32 sx = 0.5f; // for rounding to nearest pixel
|
|
for (u32 x=0; x<width; ++x)
|
|
{
|
|
CColorConverter::convert_viaFormat(Data+ syval + ((s32)sx)*BytesPerPixel, Format, 1, ((u8*)target)+ yval + (x*bpp), format);
|
|
sx+=sourceXStep;
|
|
}
|
|
sy+=sourceYStep;
|
|
syval=(s32)(sy)*Pitch;
|
|
yval+=pitch;
|
|
}
|
|
}
|
|
|
|
|
|
//! copies this surface into another, scaling it to the target image size
|
|
// note: this is very very slow.
|
|
void CImage::copyToScaling(IImage* target)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyToScaling method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
if (!target)
|
|
return;
|
|
|
|
const core::dimension2d<u32>& targetSize = target->getDimension();
|
|
|
|
if (targetSize==Size)
|
|
{
|
|
copyTo(target);
|
|
return;
|
|
}
|
|
|
|
copyToScaling(target->getData(), targetSize.Width, targetSize.Height, target->getColorFormat());
|
|
}
|
|
|
|
|
|
//! copies this surface into another, scaling it to fit it.
|
|
void CImage::copyToScalingBoxFilter(IImage* target, s32 bias, bool blend)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::copyToScalingBoxFilter method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
const core::dimension2d<u32> destSize = target->getDimension();
|
|
|
|
const f32 sourceXStep = (f32) Size.Width / (f32) destSize.Width;
|
|
const f32 sourceYStep = (f32) Size.Height / (f32) destSize.Height;
|
|
|
|
target->getData();
|
|
|
|
s32 fx = core::ceil32( sourceXStep );
|
|
s32 fy = core::ceil32( sourceYStep );
|
|
f32 sx;
|
|
f32 sy;
|
|
|
|
sy = 0.f;
|
|
for ( u32 y = 0; y != destSize.Height; ++y )
|
|
{
|
|
sx = 0.f;
|
|
for ( u32 x = 0; x != destSize.Width; ++x )
|
|
{
|
|
target->setPixel( x, y,
|
|
getPixelBox( core::floor32(sx), core::floor32(sy), fx, fy, bias ), blend );
|
|
sx += sourceXStep;
|
|
}
|
|
sy += sourceYStep;
|
|
}
|
|
}
|
|
|
|
|
|
//! fills the surface with given color
|
|
void CImage::fill(const SColor &color)
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::fill method doesn't work with compressed images.", ELL_WARNING);
|
|
return;
|
|
}
|
|
|
|
u32 c;
|
|
|
|
switch ( Format )
|
|
{
|
|
case ECF_A1R5G5B5:
|
|
c = color.toA1R5G5B5();
|
|
c |= c << 16;
|
|
break;
|
|
case ECF_R5G6B5:
|
|
c = video::A8R8G8B8toR5G6B5( color.color );
|
|
c |= c << 16;
|
|
break;
|
|
case ECF_A8R8G8B8:
|
|
c = color.color;
|
|
break;
|
|
case ECF_R8G8B8:
|
|
{
|
|
u8 rgb[3];
|
|
CColorConverter::convert_A8R8G8B8toR8G8B8(&color, 1, rgb);
|
|
const u32 size = getImageDataSizeInBytes();
|
|
for (u32 i=0; i<size; i+=3)
|
|
{
|
|
memcpy(Data+i, rgb, 3);
|
|
}
|
|
return;
|
|
}
|
|
break;
|
|
default:
|
|
// TODO: Handle other formats
|
|
return;
|
|
}
|
|
memset32( Data, c, getImageDataSizeInBytes() );
|
|
}
|
|
|
|
void CImage::flip(bool topBottom, bool leftRight)
|
|
{
|
|
if ( !topBottom && !leftRight)
|
|
return;
|
|
|
|
const core::dimension2du dim(getDimension());
|
|
if ( dim.Width == 0 || dim.Height == 0 )
|
|
return;
|
|
|
|
u8* data = (u8*)getData();
|
|
if (!data)
|
|
return;
|
|
|
|
const u32 bpp = getBytesPerPixel();
|
|
const u32 pitch = getPitch();
|
|
|
|
if ( topBottom )
|
|
{
|
|
for ( u32 i=0; i<dim.Height/2; ++i)
|
|
{
|
|
// Reverse bottom/top lines
|
|
u8* l1 = data+i*pitch;
|
|
u8* l2 = data+(dim.Height-1-i)*pitch;
|
|
for ( u32 b=0; b<pitch; ++b)
|
|
{
|
|
irr::u8 dummy = *l1;
|
|
*l1 = *l2;
|
|
*l2 = dummy;
|
|
++l1;
|
|
++l2;
|
|
}
|
|
}
|
|
}
|
|
if ( leftRight )
|
|
{
|
|
for ( u32 i=0; i<dim.Height; ++i)
|
|
{
|
|
// Reverse left/right for each line
|
|
u8* l1 = data+i*pitch;
|
|
u8* l2 = l1+(dim.Width-1)*bpp;
|
|
for ( u32 p=0; p<dim.Width/2; ++p)
|
|
{
|
|
for ( u32 b=0; b<bpp; ++b)
|
|
{
|
|
irr::u8 dummy = l1[b];
|
|
l1[b] = l2[b];
|
|
l2[b] = dummy;
|
|
}
|
|
l1 += bpp;
|
|
l2 -= bpp;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//! get a filtered pixel
|
|
inline SColor CImage::getPixelBox( s32 x, s32 y, s32 fx, s32 fy, s32 bias ) const
|
|
{
|
|
if (IImage::isCompressedFormat(Format))
|
|
{
|
|
os::Printer::log("IImage::getPixelBox method doesn't work with compressed images.", ELL_WARNING);
|
|
return SColor(0);
|
|
}
|
|
|
|
SColor c;
|
|
s32 a = 0, r = 0, g = 0, b = 0;
|
|
|
|
for ( s32 dx = 0; dx != fx; ++dx )
|
|
{
|
|
for ( s32 dy = 0; dy != fy; ++dy )
|
|
{
|
|
c = getPixel( core::s32_min ( x + dx, Size.Width - 1 ) ,
|
|
core::s32_min ( y + dy, Size.Height - 1 )
|
|
);
|
|
|
|
a += c.getAlpha();
|
|
r += c.getRed();
|
|
g += c.getGreen();
|
|
b += c.getBlue();
|
|
}
|
|
|
|
}
|
|
|
|
s32 sdiv = s32_log2_s32(fx * fy);
|
|
|
|
a = core::s32_clamp( ( a >> sdiv ) + bias, 0, 255 );
|
|
r = core::s32_clamp( ( r >> sdiv ) + bias, 0, 255 );
|
|
g = core::s32_clamp( ( g >> sdiv ) + bias, 0, 255 );
|
|
b = core::s32_clamp( ( b >> sdiv ) + bias, 0, 255 );
|
|
|
|
c.set( a, r, g, b );
|
|
return c;
|
|
}
|
|
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|