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Skipped the ZCompLoc pass if the result can be determined at compile time. Brings back the speed lost by r146b02615c07.

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skidau
2012-08-06 09:29:01 +10:00
parent 86a1899b9e
commit 0efd4e5c29
6 changed files with 43 additions and 43 deletions
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33
Source/Core/VideoCommon/Src/PixelShaderManager.cpp
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@ -466,6 +466,39 @@ void PixelShaderManager::SetMaterialColorChanged(int index)
nMaterialsChanged |= (1 << index);
}
ALPHA_PRETEST_RESULT PixelShaderManager::AlphaPreTest()
{
u32 op = bpmem.alphaFunc.logic;
u32 comp[2] = {bpmem.alphaFunc.comp0, bpmem.alphaFunc.comp1};
// First kill all the simple cases
switch(op)
{
case 0: // AND
if (comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_ALWAYS) return ALPHAPT_ALWAYSPASS;
if (comp[0] == ALPHACMP_NEVER || comp[1] == ALPHACMP_NEVER) return ALPHAPT_ALWAYSFAIL;
break;
case 1: // OR
if (comp[0] == ALPHACMP_ALWAYS || comp[1] == ALPHACMP_ALWAYS) return ALPHAPT_ALWAYSPASS;
if (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER)return ALPHAPT_ALWAYSFAIL;
break;
case 2: // XOR
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_NEVER) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_ALWAYS))
return ALPHAPT_ALWAYSPASS;
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_ALWAYS) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER))
return ALPHAPT_ALWAYSFAIL;
break;
case 3: // XNOR
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_NEVER) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_ALWAYS))
return ALPHAPT_ALWAYSFAIL;
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_ALWAYS) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER))
return ALPHAPT_ALWAYSPASS;
break;
default: PanicAlert("bad logic for alpha test? %08x", op);
}
return ALPHAPT_UNDEFINED;
}
void PixelShaderManager::DoState(PointerWrap &p)
{
p.Do(lastRGBAfull);