mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-07-10 15:15:58 +00:00
a5d73ce965
This is a major reworking of this transform. The old transform code was getting unwieldy, with part of the complication coming from the handling of multiple return statements. By generating a wrapper function instead, we can avoid a lot of this complexity. The original entry point function is stripped of all shader IO attributes (as well as `stage` and `workgroup_size`), but the body is left unmodified. A new entry point wrapper function is introduced which calls the original function, packing/unpacking the shader inputs as necessary, and propagates the result to the corresponding shader outputs. The new code has been refactored to use a state object with the different parts of the transform split into separate functions, which makes it much more manageable. Fixed: tint:1076 Bug: tint:920 Change-Id: I3490a0ea7a3509a4e198ce730e476516649d8d96 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60521 Auto-Submit: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: James Price <jrprice@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
91 lines
1.3 KiB
HLSL
91 lines
1.3 KiB
HLSL
groupshared int a;
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groupshared int b;
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groupshared int c;
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void uses_a() {
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a = (a + 1);
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}
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void uses_b() {
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b = (b * 2);
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}
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void uses_a_and_b() {
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b = a;
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}
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void no_uses() {
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}
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void outer() {
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a = 0;
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uses_a();
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uses_a_and_b();
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uses_b();
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no_uses();
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}
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struct tint_symbol_1 {
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uint local_invocation_index : SV_GroupIndex;
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};
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void main1_inner(uint local_invocation_index) {
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{
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a = 0;
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}
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GroupMemoryBarrierWithGroupSync();
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a = 42;
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uses_a();
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}
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[numthreads(1, 1, 1)]
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void main1(tint_symbol_1 tint_symbol) {
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main1_inner(tint_symbol.local_invocation_index);
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return;
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}
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struct tint_symbol_3 {
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uint local_invocation_index_1 : SV_GroupIndex;
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};
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void main2_inner(uint local_invocation_index_1) {
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{
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b = 0;
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}
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GroupMemoryBarrierWithGroupSync();
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b = 7;
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uses_b();
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}
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[numthreads(1, 1, 1)]
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void main2(tint_symbol_3 tint_symbol_2) {
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main2_inner(tint_symbol_2.local_invocation_index_1);
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return;
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}
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struct tint_symbol_5 {
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uint local_invocation_index_2 : SV_GroupIndex;
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};
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void main3_inner(uint local_invocation_index_2) {
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{
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a = 0;
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b = 0;
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}
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GroupMemoryBarrierWithGroupSync();
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outer();
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no_uses();
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}
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[numthreads(1, 1, 1)]
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void main3(tint_symbol_5 tint_symbol_4) {
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main3_inner(tint_symbol_4.local_invocation_index_2);
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return;
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}
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[numthreads(1, 1, 1)]
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void main4() {
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no_uses();
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return;
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}
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