271 lines
10 KiB
C
271 lines
10 KiB
C
|
/******************************Module*Header*******************************\
|
||
|
|
* Module Name: texspan2.h
|
||
|
|
*
|
||
|
|
* Calculate the textured pixel, and write the value to the framebuffer.
|
||
|
|
*
|
||
|
|
* 22-Nov-1995 ottob Created
|
||
|
|
*
|
||
|
|
* Copyright (c) 1995 Microsoft Corporation
|
||
|
|
\**************************************************************************/
|
||
|
|
|
||
|
|
{
|
||
|
|
DWORD r, g, b;
|
||
|
|
|
||
|
|
#if (FLAT_SHADING || SMOOTH_SHADING)
|
||
|
|
#if (BPP == 8)
|
||
|
|
ULONG ditherVal = pdither[((ULONG_PTR)pPix) & 0x3];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
ULONG ditherVal = pdither[((ULONG_PTR)pPix & 0x6) >> 1];
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if PALETTE_ENABLED
|
||
|
|
|
||
|
|
if (bPalette) {
|
||
|
|
texBits = ((BYTE *)TEX_IMAGE +
|
||
|
|
((sResult & GENACCEL(gengc).sMask) >> S_SHIFT_PAL) +
|
||
|
|
((tResult & TMASK_SUBDIV) >> T_SHIFT_PAL));
|
||
|
|
|
||
|
|
texBits = (BYTE *)((ULONG *)TEX_PALETTE + *texBits);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
texBits = ((BYTE *)TEX_IMAGE +
|
||
|
|
((sResult & GENACCEL(gengc).sMask) >> S_SHIFT) +
|
||
|
|
((tResult & TMASK_SUBDIV) >> T_SHIFT));
|
||
|
|
}
|
||
|
|
|
||
|
|
#elif PALETTE_ONLY
|
||
|
|
|
||
|
|
texBits = ((BYTE *)TEX_IMAGE +
|
||
|
|
((sResult & GENACCEL(gengc).sMask) >> S_SHIFT_PAL) +
|
||
|
|
((tResult & TMASK_SUBDIV) >> T_SHIFT_PAL));
|
||
|
|
|
||
|
|
texBits = (BYTE *)((ULONG *)TEX_PALETTE + *texBits);
|
||
|
|
|
||
|
|
#else
|
||
|
|
texBits = ((BYTE *)TEX_IMAGE +
|
||
|
|
((sResult & GENACCEL(gengc).sMask) >> S_SHIFT) +
|
||
|
|
((tResult & TMASK_SUBDIV) >> T_SHIFT));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
sResult += subDs;
|
||
|
|
tResult += subDt;
|
||
|
|
|
||
|
|
|
||
|
|
#if (FAST_REPLACE)
|
||
|
|
{
|
||
|
|
#if (ALPHA)
|
||
|
|
if (texBits[3] != 0) {
|
||
|
|
if (texBits[3] != 0xff) {
|
||
|
|
|
||
|
|
texBits = (texBits - GENACCEL(gengc).texImageReplace +
|
||
|
|
(BYTE *)GENACCEL(gengc).texPalette);
|
||
|
|
|
||
|
|
ALPHA_NOMODULATE
|
||
|
|
ALPHA_READ
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = (((gbMulTable[aDisplay | texBits[2]] + rDisplay) << 8) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = (((gbMulTable[aDisplay | texBits[2]] + rDisplay) << 8) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = (((gbMulTable[aDisplay | texBits[1]] + gDisplay) << 8) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = (((gbMulTable[aDisplay | texBits[0]] + bDisplay) << 8) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
} else {
|
||
|
|
#if (BPP > 16)
|
||
|
|
ULONG texel = *((ULONG *)texBits);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = *texBits;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = *((USHORT *)texBits);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)texel;
|
||
|
|
pPix[2] = (BYTE)(texel >> 16);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
{
|
||
|
|
#if (BPP > 16)
|
||
|
|
ULONG texel = *((ULONG *)texBits);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = *texBits;
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = *((USHORT *)texBits);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)texel;
|
||
|
|
pPix[2] = (BYTE)(texel >> 16);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#elif (REPLACE)
|
||
|
|
{
|
||
|
|
#if (ALPHA)
|
||
|
|
if (texBits[3] != 0) {
|
||
|
|
if (texBits[3] != 0xff) {
|
||
|
|
|
||
|
|
ALPHA_NOMODULATE
|
||
|
|
ALPHA_READ
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = (((gbMulTable[aDisplay | texBits[2]] + rDisplay) << 8) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = (((gbMulTable[aDisplay | texBits[2]] + rDisplay) << 8) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = (((gbMulTable[aDisplay | texBits[1]] + gDisplay) << 8) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = (((gbMulTable[aDisplay | texBits[0]] + bDisplay) << 8) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
} else {
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = ((texBits[2] << 8) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = ((texBits[2] << 8) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = ((texBits[1] << 8) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = ((texBits[0] << 8) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
|
||
|
|
#if (BPP != 32)
|
||
|
|
r = ((texBits[2] << 8) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
g = ((texBits[1] << 8) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = ((texBits[0] << 8) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = *((USHORT *)texBits);
|
||
|
|
pPix[2] = (BYTE)texBits[2];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#elif (FLAT_SHADING)
|
||
|
|
{
|
||
|
|
#if (ALPHA)
|
||
|
|
if (texBits[3] != 0) {
|
||
|
|
|
||
|
|
ALPHA_MODULATE;
|
||
|
|
ALPHA_READ;
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = ((((gbMulTable[aDisplay | gbMulTable[rAccum | texBits[2]]] + rDisplay) << (8+RBITS)) + ditherVal) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = ((((gbMulTable[aDisplay | gbMulTable[rAccum | texBits[2]]] + rDisplay) << (8+RBITS)) + ditherVal) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = ((((gbMulTable[aDisplay | gbMulTable[gAccum | texBits[1]]] + gDisplay) << (8+GBITS)) + ditherVal) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = ((((gbMulTable[aDisplay | gbMulTable[bAccum | texBits[0]]] + bDisplay) << (8+BBITS)) + ditherVal) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = (((gbMulTable[rAccum | texBits[2]] << (8+RBITS)) + ditherVal) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = (((gbMulTable[rAccum | texBits[2]] << (8+RBITS)) + ditherVal) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = (((gbMulTable[gAccum | texBits[1]] << (8+GBITS)) + ditherVal) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = (((gbMulTable[bAccum | texBits[0]] << (8+BBITS)) + ditherVal) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#else // SMOOTH_SHADING
|
||
|
|
{
|
||
|
|
#if (ALPHA)
|
||
|
|
if (texBits[3] != 0) {
|
||
|
|
|
||
|
|
ALPHA_MODULATE;
|
||
|
|
ALPHA_READ;
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = ((((gbMulTable[aDisplay | gbMulTable[((rAccum >> RBITS) & 0xff00) | texBits[2]]] + rDisplay) << (8+RBITS)) + ditherVal) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = ((((gbMulTable[aDisplay | gbMulTable[((rAccum >> RBITS) & 0xff00) | texBits[2]]] + rDisplay) << (8+RBITS)) + ditherVal) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = ((((gbMulTable[aDisplay | gbMulTable[((gAccum >> GBITS) & 0xff00) | texBits[1]]] + gDisplay) << (8+GBITS)) + ditherVal) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = ((((gbMulTable[aDisplay | gbMulTable[((bAccum >> BBITS) & 0xff00) | texBits[0]]] + bDisplay) << (8+BBITS)) + ditherVal) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#if (BPP == 32)
|
||
|
|
r = (((gbMulTable[((rAccum >> RBITS) & 0xff00) | texBits[2]] << (8+RBITS)) + ditherVal) << -RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#else
|
||
|
|
r = (((gbMulTable[((rAccum >> RBITS) & 0xff00) | texBits[2]] << (8+RBITS)) + ditherVal) >> RRIGHTSHIFTADJ) & RMASK;
|
||
|
|
#endif
|
||
|
|
g = (((gbMulTable[((gAccum >> GBITS) & 0xff00) | texBits[1]] << (8+GBITS)) + ditherVal) >> GRIGHTSHIFTADJ) & GMASK;
|
||
|
|
b = (((gbMulTable[((bAccum >> BBITS) & 0xff00) | texBits[0]] << (8+BBITS)) + ditherVal) >> BRIGHTSHIFTADJ) & BMASK;
|
||
|
|
|
||
|
|
#if (BPP == 8)
|
||
|
|
*pPix = gengc->xlatPalette[r | g | b];
|
||
|
|
#elif (BPP == 16)
|
||
|
|
*((USHORT *)pPix) = (USHORT)(r | g | b);
|
||
|
|
#else
|
||
|
|
*((USHORT UNALIGNED *)pPix) = (USHORT)(g | b);
|
||
|
|
pPix[2] = (BYTE)(r >> 16);
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|