Lubos Lenco
28 lines
811 B
HLSL
28 lines
811 B
HLSL
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#ifndef _ATTRIB_HLSL_
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#define _ATTRIB_HLSL_
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float2 S16toF32(uint val) {
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int a = (int)(val << 16) >> 16;
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int b = (int)(val & 0xffff0000) >> 16;
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return float2(a, b) / 32767.0f;
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}
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float3 hit_world_position() {
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return WorldRayOrigin() + RayTCurrent() * WorldRayDirection();
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}
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float3 hit_attribute(float3 vertexAttribute[3], BuiltInTriangleIntersectionAttributes attr) {
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return vertexAttribute[0] +
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attr.barycentrics.x * (vertexAttribute[1] - vertexAttribute[0]) +
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attr.barycentrics.y * (vertexAttribute[2] - vertexAttribute[0]);
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}
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float2 hit_attribute2d(float2 vertexAttribute[3], BuiltInTriangleIntersectionAttributes attr) {
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return vertexAttribute[0] +
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attr.barycentrics.x * (vertexAttribute[1] - vertexAttribute[0]) +
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attr.barycentrics.y * (vertexAttribute[2] - vertexAttribute[0]);
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}
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#endif
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