51 lines
1.5 KiB
Plaintext
51 lines
1.5 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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int2 tint_first_leading_bit(int2 v) {
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uint2 x = select(uint2(v), uint2(~(v)), (v < int2(0)));
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uint2 const b16 = select(uint2(0u), uint2(16u), bool2((x & uint2(4294901760u))));
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x = (x >> b16);
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uint2 const b8 = select(uint2(0u), uint2(8u), bool2((x & uint2(65280u))));
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x = (x >> b8);
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uint2 const b4 = select(uint2(0u), uint2(4u), bool2((x & uint2(240u))));
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x = (x >> b4);
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uint2 const b2 = select(uint2(0u), uint2(2u), bool2((x & uint2(12u))));
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x = (x >> b2);
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uint2 const b1 = select(uint2(0u), uint2(1u), bool2((x & uint2(2u))));
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uint2 const is_zero = select(uint2(0u), uint2(4294967295u), (x == uint2(0u)));
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return int2((((((b16 | b8) | b4) | b2) | b1) | is_zero));
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}
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void firstLeadingBit_a622c2(device int2* const tint_symbol_1) {
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int2 arg_0 = int2(1);
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int2 res = tint_first_leading_bit(arg_0);
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*(tint_symbol_1) = res;
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}
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struct tint_symbol {
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float4 value [[position]];
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};
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float4 vertex_main_inner(device int2* const tint_symbol_2) {
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firstLeadingBit_a622c2(tint_symbol_2);
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return float4(0.0f);
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}
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vertex tint_symbol vertex_main(device int2* tint_symbol_3 [[buffer(0)]]) {
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float4 const inner_result = vertex_main_inner(tint_symbol_3);
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tint_symbol wrapper_result = {};
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wrapper_result.value = inner_result;
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return wrapper_result;
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}
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fragment void fragment_main(device int2* tint_symbol_4 [[buffer(0)]]) {
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firstLeadingBit_a622c2(tint_symbol_4);
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return;
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}
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kernel void compute_main(device int2* tint_symbol_5 [[buffer(0)]]) {
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firstLeadingBit_a622c2(tint_symbol_5);
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return;
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}
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