dawn-cmake/test/bug/tint/870.spvasm.expected.hlsl
Antonio Maiorano 11d09f2fe7 HLSL: force FXC to never unroll loops
Emit the "[loop]" attribute on "for" and "while" so that FXC does not
attempt to unroll them. This is to work around an FXC bug where it fails
to unroll loops with gradient operations.

FXC ostensibly unrolls such loops because gradient operations require
uniform control flow, and loops that have varying iterations may
possibly not be uniform. Tint will eventually validate that control flow
is indeed uniform, so forcing FXC to avoid unrolling in these cases
should be fine.

Bug: tint:1112
Change-Id: I10077f8b62fbbb230a0003f3864c75a8fe0e1d18
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69880
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
2021-11-18 13:50:12 +00:00

30 lines
687 B
HLSL

ByteAddressBuffer sspp962805860buildInformation : register(t2, space0);
typedef int tint_symbol_ret[6];
tint_symbol_ret tint_symbol(ByteAddressBuffer buffer, uint offset) {
int arr[6] = (int[6])0;
{
[loop] for(uint i = 0u; (i < 6u); i = (i + 1u)) {
arr[i] = asint(buffer.Load((offset + (i * 4u))));
}
}
return arr;
}
void main_1() {
int orientation[6] = (int[6])0;
const int x_23[6] = tint_symbol(sspp962805860buildInformation, 36u);
orientation[0] = x_23[0u];
orientation[1] = x_23[1u];
orientation[2] = x_23[2u];
orientation[3] = x_23[3u];
orientation[4] = x_23[4u];
orientation[5] = x_23[5u];
return;
}
void main() {
main_1();
return;
}