| #include <metal_stdlib> |
| |
| using namespace metal; |
| |
| template<typename T, int N, int M> |
| inline auto operator*(matrix<T, N, M> lhs, packed_vec<T, N> rhs) { |
| return lhs * vec<T, N>(rhs); |
| } |
| |
| template<typename T, int N, int M> |
| inline auto operator*(packed_vec<T, M> lhs, matrix<T, N, M> rhs) { |
| return vec<T, M>(lhs) * rhs; |
| } |
| |
| struct S { |
| /* 0x0000 */ packed_float3 v; |
| /* 0x000c */ uint i; |
| }; |
| |
| float3 Bad(uint index, float3 rd) { |
| float3 normal = float3(0.0f); |
| normal[index] = -(sign(rd[index])); |
| return normalize(normal); |
| } |
| |
| void tint_symbol_inner(device S& io, uint idx) { |
| io.v = Bad(io.i, io.v); |
| } |
| |
| kernel void tint_symbol(uint idx [[thread_index_in_threadgroup]], device S& io [[buffer(0)]]) { |
| tint_symbol_inner(io, idx); |
| return; |
| } |
| |
