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LightingShaderGen: Always calculate lighting for both color channels

Browse source 
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 2017-11-21 18:54:11 +10:00
commit efb9759862
7 changed files with 38 additions and 29 deletions
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13
Source/Core/VideoCommon/UberShaderVertex.cpp
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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");