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writer/hlsl: Simplify UBO accesses for static indexing

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Use the new semantic constant value information to significantly reduce the complex indexing logic emitted for UBO accesses.
This will dramatically reduce the number of `for` loops that are decayed to `while` loops.

Change-Id: I1b0adb5edde2b4ed39c6beafc2e28106b86e0edd
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57701
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
This commit is contained in:
Ben Clayton
2021-07-13 12:18:13 +00:00
parent 71f619b6f1
commit 51cfe26bb7
46 changed files with 1712 additions and 191 deletions
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3
test/ptr_ref/load/local/ptr_uniform.wgsl.expected.hlsl
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@@ -4,7 +4,6 @@ cbuffer cbuffer_v : register(b0, space0) {
[numthreads(1, 1, 1)]
void main() {
const uint scalar_offset = (0u) / 4;
const int use = (asint(v[scalar_offset / 4][scalar_offset % 4]) + 1);
const int use = (asint(v[0].x) + 1);
return;
}