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Rework Voodoo texture precalc to support non-split trilinear textures.

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Fixes trilinear bugs on Voodoo 3.
This commit is contained in:
SarahW 2020-10-26 19:39:56 +00:00
commit 826389a37a
1 changed files with 59 additions and 56 deletions
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115
src/vid_voodoo_texture.c
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@ -22,6 +22,8 @@ void voodoo_recalc_tex(voodoo_t *voodoo, int tmu)
uint32_t base = voodoo->params.texBaseAddr[tmu];
uint32_t offset = 0;
int tex_lod = 0;
uint32_t offsets[LOD_MAX+3];
int widths[LOD_MAX+3], heights[LOD_MAX+3], shifts[LOD_MAX+3];
if (voodoo->params.tLOD[tmu] & LOD_S_IS_WIDER)
height >>= aspect;
@ -31,77 +33,78 @@ void voodoo_recalc_tex(voodoo_t *voodoo, int tmu)
shift -= aspect;
}
if ((voodoo->params.tLOD[tmu] & LOD_SPLIT) && (voodoo->params.tLOD[tmu] & LOD_ODD))
for (lod = 0; lod <= LOD_MAX + 2; lod++)
{
width >>= 1;
height >>= 1;
shift--;
tex_lod++;
if (voodoo->params.tLOD[tmu] & LOD_TMULTIBASEADDR)
base = voodoo->params.texBaseAddr1[tmu];
offsets[lod] = offset;
widths[lod] = width >> lod;
heights[lod] = height >> lod;
shifts[lod] = shift - lod;
if (!widths[lod])
widths[lod] = 1;
if (!heights[lod])
heights[lod] = 1;
if (shifts[lod] < 0)
shifts[lod] = 0;
if (!(voodoo->params.tLOD[tmu] & LOD_SPLIT) ||
((lod & 1) && (voodoo->params.tLOD[tmu] & LOD_ODD)) ||
(!(lod & 1) && !(voodoo->params.tLOD[tmu] & LOD_ODD)))
{
if (voodoo->params.tformat[tmu] & 8)
offset += (width >> lod) * (height >> lod) * 2;
else
offset += (width >> lod) * (height >> lod);
}
}
if ((voodoo->params.textureMode[tmu] & TEXTUREMODE_TRILINEAR) && (voodoo->params.tLOD[tmu] & LOD_ODD))
tex_lod++; /*Skip LOD 0*/
pclog("TMU %i: %08x\n", tmu, voodoo->params.textureMode[tmu]);
for (lod = 0; lod <= LOD_MAX+1; lod++)
{
if (!width)
width = 1;
if (!height)
height = 1;
if (shift < 0)
shift = 0;
voodoo->params.tex_base[tmu][lod] = base + offset;
if (voodoo->params.tLOD[tmu] & LOD_TMULTIBASEADDR)
{
switch (tex_lod)
{
case 0:
base = voodoo->params.texBaseAddr[tmu];
break;
case 1:
base = voodoo->params.texBaseAddr1[tmu];
break;
case 2:
base = voodoo->params.texBaseAddr2[tmu];
break;
default:
base = voodoo->params.texBaseAddr38[tmu];
break;
}
}
voodoo->params.tex_base[tmu][lod] = base + offsets[tex_lod];
if (voodoo->params.tformat[tmu] & 8)
voodoo->params.tex_end[tmu][lod] = base + offset + (width * height * 2);
voodoo->params.tex_end[tmu][lod] = base + offsets[tex_lod] + (widths[tex_lod] * heights[tex_lod] * 2);
else
voodoo->params.tex_end[tmu][lod] = base + offset + (width * height);
voodoo->params.tex_w_mask[tmu][lod] = width - 1;
voodoo->params.tex_w_nmask[tmu][lod] = ~(width - 1);
voodoo->params.tex_h_mask[tmu][lod] = height - 1;
voodoo->params.tex_shift[tmu][lod] = shift;
voodoo->params.tex_end[tmu][lod] = base + offsets[tex_lod] + (widths[tex_lod] * heights[tex_lod]);
voodoo->params.tex_w_mask[tmu][lod] = widths[tex_lod] - 1;
voodoo->params.tex_w_nmask[tmu][lod] = ~(widths[tex_lod] - 1);
voodoo->params.tex_h_mask[tmu][lod] = heights[tex_lod] - 1;
voodoo->params.tex_shift[tmu][lod] = shifts[tex_lod];
voodoo->params.tex_lod[tmu][lod] = tex_lod;
if (!(voodoo->params.tLOD[tmu] & LOD_SPLIT) || ((lod & 1) && (voodoo->params.tLOD[tmu] & LOD_ODD)) || (!(lod & 1) && !(voodoo->params.tLOD[tmu] & LOD_ODD)))
if (!(voodoo->params.textureMode[tmu] & TEXTUREMODE_TRILINEAR) ||
((lod & 1) && (voodoo->params.tLOD[tmu] & LOD_ODD)) ||
(!(lod & 1) && !(voodoo->params.tLOD[tmu] & LOD_ODD)))
{
if (!(voodoo->params.tLOD[tmu] & LOD_ODD) || lod != 0)
{
if (voodoo->params.tformat[tmu] & 8)
offset += width * height * 2;
else
offset += width * height;
if (voodoo->params.tLOD[tmu] & LOD_SPLIT)
{
width >>= 2;
height >>= 2;
shift -= 2;
if (voodoo->params.textureMode[tmu] & TEXTUREMODE_TRILINEAR)
tex_lod += 2;
}
else
{
width >>= 1;
height >>= 1;
shift--;
tex_lod++;
}
if (voodoo->params.tLOD[tmu] & LOD_TMULTIBASEADDR)
{
switch (tex_lod)
{
case 0:
base = voodoo->params.texBaseAddr[tmu];
break;
case 1:
base = voodoo->params.texBaseAddr1[tmu];
break;
case 2:
base = voodoo->params.texBaseAddr2[tmu];
break;
default:
base = voodoo->params.texBaseAddr38[tmu];
break;
}
}
}
}
}