dawn-cmake/test/tint/builtins/extractBits/scalar/i32.spvasm.expected.hlsl
Ben Clayton d868e860e0 builtins: Add extractBits
CTS tests: https://github.com/gpuweb/cts/pull/1005

Bug: tint:1371
Change-Id: I228c7b2a27c6fbac0653c416fac603a6fb4bff85
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/81640
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2022-02-23 21:18:09 +00:00

22 lines
416 B
HLSL

int tint_extract_bits(int v, uint offset, uint count) {
const uint s = min(offset, 32u);
const uint e = min(32u, (s + count));
const uint shl = (32u - e);
const uint shr = (shl + s);
return ((v << shl) >> shr);
}
void f_1() {
int v = 0;
uint offset_1 = 0u;
uint count = 0u;
const int x_14 = tint_extract_bits(v, offset_1, count);
return;
}
[numthreads(1, 1, 1)]
void f() {
f_1();
return;
}