dawn-cmake/test/bug/tint/744.wgsl.expected.hlsl
Antonio Maiorano bc5d8f6bcf Revert "HLSL: force FXC to never unroll loops"
This reverts commit 11d09f2fe7c006b78f7319e876e4ced43f0c1a60.

Reason for revert: Failing roll of Tint to Dawn: https://dawn-review.googlesource.com/c/dawn/+/70100

Original change's description:
> 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>

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: tint:1112
Change-Id: I8e8f3c0abfa6e6bc5d0e67af9428a46ef867d5c1
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70540
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
2021-11-22 19:31:56 +00:00

33 lines
996 B
HLSL

ByteAddressBuffer firstMatrix : register(t0, space0);
ByteAddressBuffer secondMatrix : register(t1, space0);
RWByteAddressBuffer resultMatrix : register(u2, space0);
cbuffer cbuffer_uniforms : register(b3, space0) {
uint4 uniforms[2];
};
struct tint_symbol_1 {
uint3 global_id : SV_DispatchThreadID;
};
void main_inner(uint3 global_id) {
const uint2 resultCell = uint2(global_id.y, global_id.x);
const uint dimInner = uniforms[0].y;
const uint dimOutter = uniforms[1].y;
uint result = 0u;
{
for(uint i = 0u; (i < dimInner); i = (i + 1u)) {
const uint a = (i + (resultCell.x * dimInner));
const uint b = (resultCell.y + (i * dimOutter));
result = (result + (firstMatrix.Load((4u * a)) * secondMatrix.Load((4u * b))));
}
}
const uint index = (resultCell.y + (resultCell.x * dimOutter));
resultMatrix.Store((4u * index), asuint(result));
}
[numthreads(2, 2, 1)]
void main(tint_symbol_1 tint_symbol) {
main_inner(tint_symbol.global_id);
return;
}