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Software: Fix OOB tex coord indices

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Previously we set the texture coordinate to zero, now we set
the texture coordinate *index* to zero. This fixes the ripple
effect of the Mario painting in Luigi's Mansion.
This commit is contained in:
Pokechu22 2021-04-08 18:10:13 -07:00
parent f6cf85a8bc
commit 16c17ed9ce
1 changed files with 27 additions and 5 deletions
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32
Source/Core/VideoBackends/Software/Tev.cpp
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@ -6,6 +6,7 @@
#include <algorithm>
#include <cmath>
#include <cstring>
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
@ -559,9 +560,16 @@ void Tev::Draw()
const int stageNum2 = stageNum >> 1;
const int stageOdd = stageNum & 1;
const u32 texcoordSel = bpmem.tevindref.getTexCoord(stageNum);
u32 texcoordSel = bpmem.tevindref.getTexCoord(stageNum);
const u32 texmap = bpmem.tevindref.getTexMap(stageNum);
// Quirk: when the tex coord is not less than the number of tex gens (i.e. the tex coord does
// not exist), then tex coord 0 is used (though sometimes glitchy effects happen on console).
// This affects the Mario portrait in Luigi's Mansion, where the developers forgot to set
// the number of tex gens to 2 (bug 11462).
if (texcoordSel >= bpmem.genMode.numtexgens)
texcoordSel = 0;
const TEXSCALE& texscale = bpmem.texscale[stageNum2];
const s32 scaleS = stageOdd ? texscale.ss1 : texscale.ss0;
const s32 scaleT = stageOdd ? texscale.ts1 : texscale.ts0;
@ -592,8 +600,13 @@ void Tev::Draw()
const TevStageCombiner::ColorCombiner& cc = bpmem.combiners[stageNum].colorC;
const TevStageCombiner::AlphaCombiner& ac = bpmem.combiners[stageNum].alphaC;
const int texcoordSel = order.getTexCoord(stageOdd);
const int texmap = order.getTexMap(stageOdd);
u32 texcoordSel = order.getTexCoord(stageOdd);
const u32 texmap = order.getTexMap(stageOdd);
// Quirk: when the tex coord is not less than the number of tex gens (i.e. the tex coord does
// not exist), then tex coord 0 is used (though sometimes glitchy effects happen on console).
if (texcoordSel >= bpmem.genMode.numtexgens)
texcoordSel = 0;
Indirect(stageNum, Uv[texcoordSel].s, Uv[texcoordSel].t);
@ -603,8 +616,17 @@ void Tev::Draw()
// RGBA
u8 texel[4];
TextureSampler::Sample(TexCoord.s, TexCoord.t, TextureLod[stageNum], TextureLinear[stageNum],
texmap, texel);
if (bpmem.genMode.numtexgens > 0)
{
TextureSampler::Sample(TexCoord.s, TexCoord.t, TextureLod[stageNum],
TextureLinear[stageNum], texmap, texel);
}
else
{
// It seems like the result is always black when no tex coords are enabled, but further
// hardware testing is needed.
std::memset(texel, 0, 4);
}
#if ALLOW_TEV_DUMPS
if (g_ActiveConfig.bDumpTevTextureFetches)