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12 lines
161 B
HLSL
12 lines
161 B
HLSL
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float3 mulvq(float3 v, float4 q)
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{
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float3 u = q.xyz;
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float s = q.w;
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return (dot(u, v)*u*2.0f) + (s*s - dot(u, u)) * v + (cross(u, v)*s*2.0f);
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}
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