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27 行
740 B
27 行
740 B
struct vdata
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{
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float2 vertex;
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float2 uv;
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};
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StructuredBuffer<vdata> databuffer;
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StructuredBuffer<int> indexbuffer;
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int _startVertex;
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v2f vert_compute (uint vertex_id: SV_VertexID)
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{
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v2f o = (v2f)0;
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vdata v = databuffer[indexbuffer[_startVertex + vertex_id]];
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o.ftcoord = v.uv;
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o.fpos = v.vertex;
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float3x3 mat = float3x3(_mat[0], _mat[1], _mat[2], _mat[3], _mat[4], _mat[5], 0, 0, 1);
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float2 p = mul(mat, float3(v.vertex.xy, 1.0)).xy - _viewport.xy;
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#if UNITY_UV_STARTS_AT_TOP
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o.vertex = float4(2.0 * p.x / _viewport.z - 1.0, 2.0 * p.y / _viewport.w - 1.0, 0, 1);
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#else
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o.vertex = float4(2.0 * p.x / _viewport.z - 1.0, 1.0 - 2.0 * p.y / _viewport.w, 0, 1);
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#endif
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return o;
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}
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