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VideoCommon: Merge PointGeometryShader into GeometryShaderGen.

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This adds point-width emulation support to OpenGL.
This commit is contained in:
Jules Blok
2014-12-15 22:29:56 +01:00
parent 55e60a9c22
commit 8ae738ff30
7 changed files with 40 additions and 310 deletions
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34
Source/Core/VideoCommon/GeometryShaderGen.cpp
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@ -140,6 +140,12 @@ static inline void GenerateGeometryShader(T& out, u32 primitive_type, API_TYPE A
out.Write("\t\toffset = float2(0, -" I_LINEPTWIDTH"[0] / " I_VIEWPORT".y);\n");
out.Write("\t}\n");
}
else if (primitive_type == PRIMITIVE_POINTS)
{
// Offset from center to upper right vertex
// Lerp PointSize/2 from [0,0..VpWidth,VpHeight] to [-1,1..1,-1]
out.Write("float2 offset = float2(" I_LINEPTWIDTH"[1] / " I_VIEWPORT".x, -" I_LINEPTWIDTH"[1] / " I_VIEWPORT".y) * o[0].pos.w;\n");
}
if (g_ActiveConfig.iStereoMode > 0)
{
@ -186,12 +192,38 @@ static inline void GenerateGeometryShader(T& out, u32 primitive_type, API_TYPE A
for (unsigned int i = 0; i < bpmem.genMode.numtexgens; ++i)
{
out.Write("\tr.tex%d.x += " I_LINEPTWIDTH"[2] * (" I_TEXOFFSETFLAGS"[%d] % 2);\n", i, i);
out.Write("\tr.tex%d.x += " I_LINEPTWIDTH"[2] * (" I_TEXOFFSETFLAGS"[%d] & 0x01);\n", i, i);
}
EmitVertex<T>(out, "l", ApiType);
EmitVertex<T>(out, "r", ApiType);
}
else if (primitive_type == PRIMITIVE_POINTS)
{
out.Write("VS_OUTPUT ll = f;\n");
out.Write("VS_OUTPUT lr = f;\n");
out.Write("VS_OUTPUT ul = f;\n");
out.Write("VS_OUTPUT ur = f;\n");
out.Write("ll.pos.xy += float2(-1,-1) * offset;\n");
out.Write("lr.pos.xy += float2(1,-1) * offset;\n");
out.Write("ul.pos.xy += float2(-1,1) * offset;\n");
out.Write("ur.pos.xy += offset;\n");
out.Write("float2 texOffset = float2(" I_LINEPTWIDTH"[3], " I_LINEPTWIDTH"[3]);\n");
for (unsigned int i = 0; i < bpmem.genMode.numtexgens; ++i)
{
out.Write("ll.tex%d.xy += float2(0,1) * texOffset * (" I_TEXOFFSETFLAGS"[%d] & 0x10);\n", i, i);
out.Write("lr.tex%d.xy += texOffset * (" I_TEXOFFSETFLAGS"[%d] & 0x10);\n", i, i);
out.Write("ur.tex%d.xy += float2(1,0) * texOffset * (" I_TEXOFFSETFLAGS"[%d] & 0x10);\n", i, i);
}
EmitVertex<T>(out, "ll", ApiType);
EmitVertex<T>(out, "lr", ApiType);
EmitVertex<T>(out, "ul", ApiType);
EmitVertex<T>(out, "ur", ApiType);
}
else
{
EmitVertex<T>(out, "f", ApiType);