| #include <metal_stdlib> |
| |
| using namespace metal; |
| int tint_first_trailing_bit(int v) { |
| uint x = uint(v); |
| uint const b16 = select(16u, 0u, bool((x & 65535u))); |
| x = (x >> b16); |
| uint const b8 = select(8u, 0u, bool((x & 255u))); |
| x = (x >> b8); |
| uint const b4 = select(4u, 0u, bool((x & 15u))); |
| x = (x >> b4); |
| uint const b2 = select(2u, 0u, bool((x & 3u))); |
| x = (x >> b2); |
| uint const b1 = select(1u, 0u, bool((x & 1u))); |
| uint const is_zero = select(0u, 4294967295u, (x == 0u)); |
| return int((((((b16 | b8) | b4) | b2) | b1) | is_zero)); |
| } |
| |
| void firstTrailingBit_3a2acc() { |
| int res = tint_first_trailing_bit(1); |
| } |
| |
| struct tint_symbol { |
| float4 value [[position]]; |
| }; |
| |
| float4 vertex_main_inner() { |
| firstTrailingBit_3a2acc(); |
| return float4(); |
| } |
| |
| vertex tint_symbol vertex_main() { |
| float4 const inner_result = vertex_main_inner(); |
| tint_symbol wrapper_result = {}; |
| wrapper_result.value = inner_result; |
| return wrapper_result; |
| } |
| |
| fragment void fragment_main() { |
| firstTrailingBit_3a2acc(); |
| return; |
| } |
| |
| kernel void compute_main() { |
| firstTrailingBit_3a2acc(); |
| return; |
| } |
| |