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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>
40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct VertexInputs0 {
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uint vertex_index;
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int loc0;
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};
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struct VertexInputs1 {
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float loc2;
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float4 loc3;
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};
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struct tint_symbol_2 {
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int loc0 [[attribute(0)]];
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uint loc1 [[attribute(1)]];
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float loc2 [[attribute(2)]];
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float4 loc3 [[attribute(3)]];
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};
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struct tint_symbol_3 {
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float4 value [[position]];
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};
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float4 tint_symbol_inner(VertexInputs0 inputs0, uint loc1, uint instance_index, VertexInputs1 inputs1) {
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uint const foo = (inputs0.vertex_index + instance_index);
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int const i = inputs0.loc0;
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uint const u = loc1;
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float const f = inputs1.loc2;
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float4 const v = inputs1.loc3;
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return float4();
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}
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vertex tint_symbol_3 tint_symbol(uint vertex_index [[vertex_id]], uint instance_index [[instance_id]], tint_symbol_2 tint_symbol_1 [[stage_in]]) {
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VertexInputs0 const tint_symbol_4 = {.vertex_index=vertex_index, .loc0=tint_symbol_1.loc0};
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VertexInputs1 const tint_symbol_5 = {.loc2=tint_symbol_1.loc2, .loc3=tint_symbol_1.loc3};
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float4 const inner_result = tint_symbol_inner(tint_symbol_4, tint_symbol_1.loc1, instance_index, tint_symbol_5);
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tint_symbol_3 wrapper_result = {};
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wrapper_result.value = inner_result;
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return wrapper_result;
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}
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