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LightingShaderGen: Always calculate lighting for both color channels

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Cel-damage uses the color from the lighting stage of the vertex pipeline
as texture coordinates, but sets numColorChans to zero.

We now calculate the colors in all cases, but override the color before
writing it from the vertex shader if numColorChans is set to a lower value.
This commit is contained in:
Stenzek committed 2017-11-22 01:52:18 +10:00
1 parent 18c1bf19ca
commit efb9759862
7 files changed
+38 -29
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Source/Core/VideoCommon/UberShaderVertex.cpp
+13
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@@ -171,6 +171,19 @@ ShaderCode GenVertexShader(APIType ApiType, const ShaderHostConfig& host_config,
if (numTexgen > 0)
GenVertexShaderTexGens(ApiType, numTexgen, out);
out.Write("if (xfmem_numColorChans == 0u) {\n");
out.Write(" if ((components & %uu) != 0u)\n", VB_HAS_COL0);
out.Write(" o.colors_0 = rawcolor0;\n");
out.Write(" else\n");
out.Write(" o.colors_1 = float4(1.0, 1.0, 1.0, 1.0);\n");
out.Write("}\n");
out.Write("if (xfmem_numColorChans < 2u) {\n");
out.Write(" if ((components & %uu) != 0u)\n", VB_HAS_COL1);
out.Write(" o.colors_0 = rawcolor1;\n");
out.Write(" else\n");
out.Write(" o.colors_1 = float4(1.0, 1.0, 1.0, 1.0);\n");
out.Write("}\n");
// clipPos/w needs to be done in pixel shader, not here
out.Write("o.clipPos = o.pos;\n");