diff options
| author | Jules Blok <jules.blok@gmail.com> | 2014-11-14 12:39:25 +0100 |
|---|---|---|
| committer | Jules Blok <jules.blok@gmail.com> | 2014-12-14 13:28:44 +0100 |
| commit | 4f6ce0f236226fed6677283359723911c329bc38 (patch) | |
| tree | 5719471b52ed12b6d2137288e99eaf112002aee2 /Source/Core/VideoCommon/GeometryShaderGen.cpp | |
| parent | ca766747a88e883d12d3ef8948346ed15e0bbe52 (diff) | |
D3D: Add geometry shader instancing support.
Diffstat (limited to 'Source/Core/VideoCommon/GeometryShaderGen.cpp')
| -rw-r--r-- | Source/Core/VideoCommon/GeometryShaderGen.cpp | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/Source/Core/VideoCommon/GeometryShaderGen.cpp b/Source/Core/VideoCommon/GeometryShaderGen.cpp index 3ebea24585..b75eddd87a 100644 --- a/Source/Core/VideoCommon/GeometryShaderGen.cpp +++ b/Source/Core/VideoCommon/GeometryShaderGen.cpp @@ -64,8 +64,16 @@ static inline void GenerateGeometryShader(T& out, u32 components, API_TYPE ApiTy } else // D3D { - out.Write("[maxvertexcount(6)]\n"); - out.Write("void main(triangle VS_OUTPUT o[3], inout TriangleStream<GS_OUTPUT> Output)\n{\n"); + if (g_ActiveConfig.backend_info.bSupportsGSInstancing) + { + out.Write("[maxvertexcount(3)]\n[instance(%d)]\n", g_ActiveConfig.iStereoMode > 0 ? 2 : 1); + out.Write("void main(triangle VS_OUTPUT o[3], inout TriangleStream<GS_OUTPUT> Output, in uint InstanceID : SV_GSInstanceID)\n{\n"); + } + else + { + out.Write("[maxvertexcount(6)]\n"); + out.Write("void main(triangle VS_OUTPUT o[3], inout TriangleStream<GS_OUTPUT> Output)\n{\n"); + } out.Write("\tGS_OUTPUT gs;\n"); } @@ -75,13 +83,19 @@ static inline void GenerateGeometryShader(T& out, u32 components, API_TYPE ApiTy // If the GPU supports invocation we don't need a for loop and can simply use the // invocation identifier to determine which layer we're rendering. if (g_ActiveConfig.backend_info.bSupportsGSInstancing) - out.Write("\tint l = gl_InvocationID;\n"); + { + if (ApiType == API_OPENGL) + out.Write("\tint l = gl_InvocationID;\n"); + else + out.Write("\tint l = InstanceID;\n"); + } else out.Write("\tfor (int l = 0; l < %d; ++l) {\n", g_ActiveConfig.iStereoMode > 0 ? 2 : 1); out.Write("\tfor (int i = 0; i < 3; ++i) {\n"); - out.Write("\t\tgs.layer = l;\n"); + // Select the output layer + out.Write("\t\tgs.layer = l;\n"); if (ApiType == API_OPENGL) out.Write("\t\tgl_Layer = l;\n"); @@ -118,7 +132,7 @@ static inline void GenerateGeometryShader(T& out, u32 components, API_TYPE ApiTy if (ApiType == API_OPENGL) out.Write("\tEndPrimitive();\n"); else - out.Write("\t\tOutput.RestartStrip();\n"); + out.Write("\tOutput.RestartStrip();\n"); if (!g_ActiveConfig.backend_info.bSupportsGSInstancing) out.Write("\t}\n"); |