luboslenco
23 lines
994 B
HLSL
23 lines
994 B
HLSL
struct SPIRV_Cross_Input { float4 svpos : SV_POSITION; };
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struct SPIRV_Cross_Output { float3 wpos : TEXCOORD0; float4 svpos : SV_POSITION; };
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[maxvertexcount(3)]
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void main(triangle SPIRV_Cross_Input stage_input[3], inout TriangleStream<SPIRV_Cross_Output> output) {
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float3 p1 = stage_input[1].svpos.xyz - stage_input[0].svpos.xyz;
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float3 p2 = stage_input[2].svpos.xyz - stage_input[0].svpos.xyz;
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float3 p = abs(cross(p1, p2));
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for (int i = 0; i < 3; ++i) {
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SPIRV_Cross_Output stage_output;
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stage_output.wpos = stage_input[i].svpos.xyz;
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if (p.z > p.x && p.z > p.y) {
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stage_output.svpos = float4(stage_input[i].svpos.x, stage_input[i].svpos.y, 0.0, 1.0);
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}
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else if (p.x > p.y && p.x > p.z) {
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stage_output.svpos = float4(stage_input[i].svpos.y, stage_input[i].svpos.z, 0.0, 1.0);
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}
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else {
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stage_output.svpos = float4(stage_input[i].svpos.x, stage_input[i].svpos.z, 0.0, 1.0);
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}
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output.Append(stage_output);
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}
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}
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