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D3D: Fix alpha test (I think, not tested much, no pun intended)

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4124 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard 2009-08-31 21:47:39 +00:00
parent 62ab5cf0e5
commit d65fb1a30a
1 changed files with 10 additions and 5 deletions
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15
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
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@ -873,7 +873,7 @@ static bool WriteAlphaTest(char *&p, bool HLSL)
return true;
if (comp[0] == ALPHACMP_NEVER || comp[1] == ALPHACMP_NEVER)
{
WRITE(p, "discard;\n");
WRITE(p, HLSL ? "clip(-1);" : "discard;\n");
return false;
}
break;
@ -882,7 +882,7 @@ static bool WriteAlphaTest(char *&p, bool HLSL)
return true;
if (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER)
{
WRITE(p, "discard;\n");
WRITE(p, HLSL ? "clip(-1);" : "discard;\n");
return false;
}
break;
@ -891,14 +891,14 @@ static bool WriteAlphaTest(char *&p, bool HLSL)
return true;
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_ALWAYS) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER))
{
WRITE(p, "discard;\n");
WRITE(p, HLSL ? "clip(-1);" : "discard;\n");
return false;
}
break;
case 3: // XNOR
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_NEVER) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_ALWAYS))
{
WRITE(p, "discard;\n");
WRITE(p, HLSL ? "clip(-1);" : "discard;\n");
return false;
}
if ((comp[0] == ALPHACMP_ALWAYS && comp[1] == ALPHACMP_ALWAYS) || (comp[0] == ALPHACMP_NEVER && comp[1] == ALPHACMP_NEVER))
@ -927,7 +927,12 @@ static bool WriteAlphaTest(char *&p, bool HLSL)
WriteAlphaCompare(p, 1, bpmem.alphaFunc.comp1);
WRITE(p, ");\n");
if (HLSL) {
// clip works differently than discard - discard takes a bool, clip takes a value that kills the pixel on negative
WRITE(p, " ? -1 : 1);\n");
} else {
WRITE(p, ");\n");
}
return true;
}