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[D3D12] Rectangle list geometry shader and viewport fixes

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Triang3l
2018-08-14 17:21:18 +03:00
parent 1200eaae24
commit 17fb60a97a
5 changed files with 136 additions and 20 deletions
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85
src/xenia/gpu/d3d12/shaders/primitive_rectangle_list.gs.hlsl Normal file
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@@ -0,0 +1,85 @@
struct XeVertex {
float4 position : SV_Position;
float4 interpolators[16] : TEXCOORD;
float point_size : PSIZE;
};
[maxvertexcount(6)]
void main(triangle XeVertex xe_in[3], inout TriangleStream<XeVertex> xe_stream) {
XeVertex xe_out;
xe_out.position = xe_in[0].position;
xe_out.interpolators = xe_in[0].interpolators;
xe_out.point_size = xe_in[0].point_size;
xe_stream.Append(xe_out);
xe_out.position = xe_in[1].position;
xe_out.interpolators = xe_in[1].interpolators;
xe_out.point_size = xe_in[1].point_size;
xe_stream.Append(xe_out);
xe_out.position = xe_in[2].position;
xe_out.interpolators = xe_in[2].interpolators;
xe_out.point_size = xe_in[2].point_size;
xe_stream.Append(xe_out);
xe_stream.RestartStrip();
// Most games use a left-aligned form.
[branch] if (all(xe_in[0].position.xy ==
float2(xe_in[2].position.x, xe_in[1].position.y)) ||
all(xe_in[0].position.xy ==
float2(xe_in[1].position.x, xe_in[2].position.y))) {
// 0 ------ 1 0: -1,-1
// | - | 1: 1,-1
// | // | 2: -1, 1
// | - | 3: [ 1, 1 ]
// 2 ----- [3]
//
// 0 ------ 2 0: -1,-1
// | - | 1: -1, 1
// | // | 2: 1,-1
// | - | 3: [ 1, 1 ]
// 1 ------[3]
xe_out.position = xe_in[2].position;
xe_out.interpolators = xe_in[2].interpolators;
xe_out.point_size = xe_in[2].point_size;
xe_stream.Append(xe_out);
xe_out.position = xe_in[1].position;
xe_out.interpolators = xe_in[1].interpolators;
xe_out.point_size = xe_in[1].point_size;
xe_stream.Append(xe_out);
xe_out.position = float4(xe_in[1].position.xy -
xe_in[0].position.xy +
xe_in[2].position.xy,
xe_in[2].position.zw);
[unroll] for (int i = 0; i < 16; ++i) {
xe_out.interpolators[i] = xe_in[1].interpolators[i] -
xe_in[0].interpolators[i] +
xe_in[2].interpolators[i];
}
} else {
// 0 ------ 1 0: -1,-1
// | - | 1: 1,-1
// | \\ | 2: 1, 1
// | - | 3: [-1, 1 ]
// [3] ----- 2
xe_out.position = xe_in[0].position;
xe_out.interpolators = xe_in[0].interpolators;
xe_out.point_size = xe_in[0].point_size;
xe_stream.Append(xe_out);
xe_out.position = xe_in[2].position;
xe_out.interpolators = xe_in[2].interpolators;
xe_out.point_size = xe_in[2].point_size;
xe_stream.Append(xe_out);
xe_out.position = float4(xe_in[0].position.xy -
xe_in[1].position.xy +
xe_in[2].position.xy,
xe_in[2].position.zw);
[unroll] for (int i = 0; i < 16; ++i) {
xe_out.interpolators[i] = xe_in[0].interpolators[i] -
xe_in[1].interpolators[i] +
xe_in[2].interpolators[i];
}
}
xe_out.point_size = xe_in[2].point_size;
xe_stream.Append(xe_out);
xe_stream.RestartStrip();
}