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fixed problem with performance trilinear and lodbias sign

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This commit is contained in:
koolsmoky
2007-09-29 14:19:23 +00:00
parent 408a154309
commit 09fae37520
1 changed files with 51 additions and 59 deletions
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110
glide3x/h5/glide3/src/gtex.c
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@@ -2458,7 +2458,7 @@ GR_ENTRY(grTexLodBiasValue, void,
else if(lodBias < -0x20) lodBias = -0x20;
/* Mask it back off. */
lodBias &= 0x3f;
tLod |= lodBias << SST_LODBIAS_SHIFT;
tLod |= (lodBias << SST_LODBIAS_SHIFT);
gc->state.tmuShadow[tmu].tLOD = tLod;
@@ -2541,7 +2541,14 @@ GR_ENTRY(grTexMipMapMode, void,
tLod &= ~(SST_LODMIN | SST_LODMAX | SST_LOD_ODD);
texMode &= ~(SST_TLODDITHER | SST_TRILINEAR);
gc->state.per_tmu[tmu].texSubLodDither = FXFALSE;
/* Force LOD dithering if the user asked for it.
*
* NB: There is a performance hit for this, but it does
* look better.
*/
texMode |= _GlideRoot.environment.texLodDither;
/*--------------------------------------------------------------
Encode Mipmap Mode Bits
--------------------------------------------------------------*/
@@ -2583,13 +2590,6 @@ GR_ENTRY(grTexMipMapMode, void,
}
gc->state.per_tmu[tmu].mmMode = mmMode;
/* Force LOD dithering if the user asked for it.
*
* NB: There is a performance hit for this, but it does
* look better.
*/
texMode |= _GlideRoot.environment.texLodDither;
/*--------------------------------------------------------------
Fix trilinear and evenOdd bits -
@@ -3786,12 +3786,22 @@ _g3LodXlat(const GrLOD_t someLOD, const FxBool tBig)
void g3LodBiasPerChip(GrChipID_t tmu, FxU32 tLod)
{
#define FN_NAME "g3LodBiasPerChip"
FxU32 newtLod ;
FxI32 oldLodBias, newLodBias;
unsigned int i;
unsigned int idx, iTexLodDither;
GR_BEGIN_NOFIFOCHECK("g3LodBiasPerChip", 88);
static FxI32 chipLodBias[2][2][4] =
if( /*(_GlideRoot.environment.texSubLodDither != 1) ||*//* we won't get here if 0 */
/*((gc->sliCount == gc->chipCount) && (gc->grSamplesPerChip == 1)) ||*//* check done in grTexMipMapMode */
/*(gc->windowed) ||*/
(gc->state.per_tmu[tmu].evenOdd != 3) ||
(gc->state.tmuShadow[tmu].textureMode & SST_TRILINEAR) )
goto FORGET_IT;
{
unsigned int i;
FxU32 newtLod;
FxI32 newLodBias;
/* sign extend it. do not remove the FxI32 cast. */
const FxI32 oldLodBias = ((((FxI32)tLod & SST_LODBIAS) << (32-6-SST_LODBIAS_SHIFT)) >> (32-6-SST_LODBIAS_SHIFT));
const unsigned int idx = ((gc->chipCount - gc->sliCount) > 2);
/* 4.2 format for tLod register
* 1chip x2fsaa - no sli, 2 samples per chip
* 2chip x2fsaa - no sli, 1 sample per chip
@@ -3803,64 +3813,46 @@ void g3LodBiasPerChip(GrChipID_t tmu, FxU32 tLod)
* 4chip x8fsaa - no sli, 2 samples per chip
* 0.00, 0.25, 0.50, 0.75 - 4 chip
* {0x00, 0x01, 0x02, 0x03}
* if mipmap dithering is enabled
* we will use different tLod registers.
*/
{
static const FxI32 chipLodBias[2][4] =
{
{0x00<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT, 0x00<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT},
{0x00<<SST_LODBIAS_SHIFT, 0x01<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT, 0x03<<SST_LODBIAS_SHIFT}
},
};
/* unmask lodbias */
tLod &= ~(SST_LODBIAS);
for (i = 0; i < gc->chipCount; i++)
{
{-0x01<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT, -0x01<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT},
{-0x01<<SST_LODBIAS_SHIFT, 0x00<<SST_LODBIAS_SHIFT, 0x01<<SST_LODBIAS_SHIFT, 0x02<<SST_LODBIAS_SHIFT}
}
};
GR_BEGIN_NOFIFOCHECK("g3LodBiasPerChip", 88);
/* don't need to modify lodbias if 0 */
if(chipLodBias[idx][i] != 0) {
newLodBias = oldLodBias + chipLodBias[idx][i];
if( /*(_GlideRoot.environment.texSubLodDither != 1) ||*//* we won't get here if 0 */
/*((gc->sliCount == gc->chipCount) && (gc->grSamplesPerChip == 1)) ||*//* check done in grTexMipMapMode */
/*(gc->windowed) ||*/
(gc->state.per_tmu[tmu].evenOdd != 3) ||
(gc->state.tmuShadow[tmu].textureMode & SST_TRILINEAR) )
return;
if (newLodBias > (0x1f<<SST_LODBIAS_SHIFT))
newLodBias = (0x1f<<SST_LODBIAS_SHIFT);
/*else if (newLodBias < (-0x20<<SST_LODBIAS_SHIFT))
newLodBias = (-0x20<<SST_LODBIAS_SHIFT);*/
/* sign extend it. */
oldLodBias = (((tLod & SST_LODBIAS) << (32-6-SST_LODBIAS_SHIFT)) >> (32-6-SST_LODBIAS_SHIFT));
newtLod = (tLod | (newLodBias & SST_LODBIAS));
/* unmask lodbias */
tLod &= ~(SST_LODBIAS);
idx = ((gc->chipCount - gc->sliCount) > 2);
iTexLodDither = (_GlideRoot.environment.texLodDither == 1);
for (i = 0; i < gc->chipCount; i++)
{
/* don't need to modify lodbias if 0 */
if(chipLodBias[iTexLodDither][idx][i] != 0) {
newLodBias = oldLodBias + chipLodBias[iTexLodDither][idx][i];
if(newLodBias > (0x1f<<SST_LODBIAS_SHIFT)) newLodBias = (0x1f<<SST_LODBIAS_SHIFT);
else if(newLodBias < (-0x20<<SST_LODBIAS_SHIFT)) newLodBias = (-0x20<<SST_LODBIAS_SHIFT);
newLodBias &= SST_LODBIAS;
newtLod = tLod | newLodBias;
{
SstRegs* tmuHw = SST_TMU(hw, tmu);
_grChipMask( 0x01 << i );
REG_GROUP_BEGIN((0x02 << tmu), tLOD, 1, 0x1);
{
REG_GROUP_SET(tmuHw, tLOD, tLod);
SstRegs* tmuHw = SST_TMU(hw, tmu);
_grChipMask( 0x01 << i );
REG_GROUP_BEGIN((0x02 << tmu), tLOD, 1, 0x1);
{
REG_GROUP_SET(tmuHw, tLOD, newtLod);
}
REG_GROUP_END();
}
REG_GROUP_END();
}
}
}
/* Restore chip mask */
_grChipMask( gc->chipmask );
/* Restore chip mask */
_grChipMask( gc->chipmask );
}
FORGET_IT:
GR_END();
#undef FN_NAME
}