49 lines
1.3 KiB
Plaintext
49 lines
1.3 KiB
Plaintext
#include <metal_stdlib>
|
|
|
|
using namespace metal;
|
|
int3 tint_first_leading_bit(int3 v) {
|
|
uint3 x = select(uint3(v), uint3(~(v)), (v < int3(0)));
|
|
uint3 const b16 = select(uint3(0u), uint3(16u), bool3((x & uint3(4294901760u))));
|
|
x = (x >> b16);
|
|
uint3 const b8 = select(uint3(0u), uint3(8u), bool3((x & uint3(65280u))));
|
|
x = (x >> b8);
|
|
uint3 const b4 = select(uint3(0u), uint3(4u), bool3((x & uint3(240u))));
|
|
x = (x >> b4);
|
|
uint3 const b2 = select(uint3(0u), uint3(2u), bool3((x & uint3(12u))));
|
|
x = (x >> b2);
|
|
uint3 const b1 = select(uint3(0u), uint3(1u), bool3((x & uint3(2u))));
|
|
uint3 const is_zero = select(uint3(0u), uint3(4294967295u), (x == uint3(0u)));
|
|
return int3((((((b16 | b8) | b4) | b2) | b1) | is_zero));
|
|
}
|
|
|
|
void firstLeadingBit_35053e() {
|
|
int3 res = tint_first_leading_bit(int3(0));
|
|
}
|
|
|
|
struct tint_symbol {
|
|
float4 value [[position]];
|
|
};
|
|
|
|
float4 vertex_main_inner() {
|
|
firstLeadingBit_35053e();
|
|
return float4(0.0f);
|
|
}
|
|
|
|
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() {
|
|
firstLeadingBit_35053e();
|
|
return;
|
|
}
|
|
|
|
kernel void compute_main() {
|
|
firstLeadingBit_35053e();
|
|
return;
|
|
}
|
|
|