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Unstubbed the Dithered Portable C functions (ordered one unstested)

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This commit is contained in:
ptitSeb 2016-04-06 13:46:26 +02:00
parent 73aab13a79
commit af9d472619
1 changed files with 61 additions and 3 deletions
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64
Sources/Engine/Graphics/Graphics.cpp
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@ -653,6 +653,15 @@ __int64 mmShifter = 0;
__int64 mmMask = 0;
ULONG *pulDitherTable;
#ifdef USE_PORTABLE_C
extern const UBYTE *pubClipByte;
// increment a byte without overflowing it
static inline void IncrementByteWithClip( UBYTE &ub, SLONG slAdd)
{
ub = pubClipByte[(SLONG)ub+slAdd];
}
#endif
// performs dithering of a 32-bit bipmap (can be in-place)
void DitherBitmap( INDEX iDitherType, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PIX pixHeight,
PIX pixCanvasWidth, PIX pixCanvasHeight)
@ -774,7 +783,32 @@ void DitherBitmap( INDEX iDitherType, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth
ditherOrder:
#if (defined USE_PORTABLE_C)
STUBBED("ordered matrix dithering routine");
union uConv
{
ULONG val;
DWORD dwords[2];
UWORD words[4];
WORD iwords[4];
UBYTE bytes[8];
};
for (int i=0; i<pixHeight; i++) {
int idx = i&3;
uConv dith;
dith.val = pulDitherTable[idx];
for (int j=0; j<4; j++) { dith.words[j] >>= mmShifter; }
dith.val &= mmMask;
uConv* src = (uConv*)(pulSrc+i*pixWidth);
uConv* dst = (uConv*)(pulDst+i*pixWidth);
for (int j=0; j<pixWidth; j+=2) {
uConv p=src[0];
for (int k=0; k<8; k++) {
IncrementByteWithClip(p.bytes[k], dith.bytes[k]);
}
dst[0] = p;
src++;
dst++;
}
}
#elif (defined __MSVC_INLINE__)
__asm {
@ -894,7 +928,31 @@ ditherError:
// slModulo+=4;
// now, dither destination
#if (defined USE_PORTABLE_C)
STUBBED("error diffusion dithering routine");
#if 1 //SEB doesn't works....
for (int i=0; i<pixHeight-1; i++) {
int step = (i&1)?-4:+4;
const UBYTE ubMask = (mmErrDiffMask&0xff);
UBYTE *src = ((UBYTE*)pulDst)+i*pixCanvasWidth*4;
if(i&1) src+=pixWidth*4;
// left to right or right to left
for (int j=0; j<pixWidth-1; j++) {
uConv p1, p3, p5, p7;
src+=step;
for (int k=0; k<4; k++) { p1.words[k] = src[k]&ubMask; }
//p1.val &= mmErrDiffMask;
for (int k=0; k<4; k++) { p3.words[k] = (p1.words[k]*3)>>4;
p5.words[k] = (p1.words[k]*5)>>4;
p7.words[k] = (p1.words[k]*7)>>4; }
for (int k=0; k<4; k++) { p1.words[k] -= (p3.words[k] + p5.words[k] + p7.words[k]);}
for (int k=0; k<4; k++) {
IncrementByteWithClip( src[k + step] , p7.words[k]);
IncrementByteWithClip( src[pixCanvasWidth*4 -step +k], p5.words[k]);
IncrementByteWithClip( src[pixCanvasWidth*4 +0 +k], p3.words[k]);
IncrementByteWithClip( src[pixCanvasWidth*4 +step +k], p1.words[k]);
}
}
}
#endif
#elif (defined __MSVC_INLINE__)
__asm {
@ -1585,7 +1643,7 @@ void FilterBitmap( INDEX iFilter, ULONG *pulSrc, ULONG *pulDst, PIX pixWidth, PI
ULONG *dst = pulDst;
ULONG *rowptr = aulRows;
ExtPix rmm1, rmm2, rmm3, rmm4, rmm5, rmm6, rmm7;
ExtPix rmm1={0}, rmm2={0}, rmm3={0}, rmm4={0}, rmm5={0}, rmm6={0}, rmm7={0};
#define EXTPIXFROMINT64(x) ExtPix r##x; extpix_fromi64(r##x, x);
EXTPIXFROMINT64(mmCm);
EXTPIXFROMINT64(mmCe);