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df3630c194
Currently polyfilled for all backends. HLSL should be able to map this to 'firstbitlow', but there might need to be some special case handling for 0 (undocumented behavior). For now just polyfill. CTS tests: https://github.com/gpuweb/cts/pull/1003 Bug: tint:1367 Bug: tint:1449 Change-Id: I8125b32687196678906e5a9d056b4f2efd885073 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/81502 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: David Neto <dneto@google.com> Commit-Queue: Ben Clayton <bclayton@google.com>
20 lines
349 B
WebGPU Shading Language
20 lines
349 B
WebGPU Shading Language
fn firstTrailingBit_3a2acc() {
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var res : i32 = firstTrailingBit(1);
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}
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@stage(vertex)
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fn vertex_main() -> @builtin(position) vec4<f32> {
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firstTrailingBit_3a2acc();
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return vec4<f32>();
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}
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@stage(fragment)
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fn fragment_main() {
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firstTrailingBit_3a2acc();
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}
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@stage(compute) @workgroup_size(1)
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fn compute_main() {
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firstTrailingBit_3a2acc();
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}
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