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Banshee fog table seems to be inverted compared to other Voodoo cards

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(hardware bug?). Re-enabled fog.
This commit is contained in:
SarahW 2020-08-14 20:34:23 +01:00
commit 6318624661
1 changed files with 3 additions and 0 deletions
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3
src/vid_voodoo_reg.c
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@ -530,6 +530,9 @@ void voodoo_reg_writel(uint32_t addr, uint32_t val, void *p)
case SST_fogTable18: case SST_fogTable19: case SST_fogTable1a: case SST_fogTable1b:
case SST_fogTable1c: case SST_fogTable1d: case SST_fogTable1e: case SST_fogTable1f:
addr = (addr - SST_fogTable00) >> 1;
if (voodoo->type == VOODOO_BANSHEE)
val = ~val; /*Banshee fog table seems to be inverted. There's a reference
in the glide2x source to a "banshee (rev<3) fogTable hack"*/
voodoo->params.fogTable[addr].dfog = val & 0xff;
voodoo->params.fogTable[addr].fog = (val >> 8) & 0xff;
voodoo->params.fogTable[addr+1].dfog = (val >> 16) & 0xff;