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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>
41 lines
1.2 KiB
Plaintext
41 lines
1.2 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct tint_array_wrapper {
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float arr[3];
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};
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struct main_out {
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float4 x_2_1;
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};
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struct tint_symbol_2 {
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float x_1_param [[attribute(4)]];
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float x_1_param_1 [[attribute(5)]];
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float x_1_param_2 [[attribute(6)]];
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};
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struct tint_symbol_3 {
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float4 x_2_1 [[position]];
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};
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void main_1() {
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return;
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}
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main_out tint_symbol_inner(float x_1_param, float x_1_param_1, float x_1_param_2, thread tint_array_wrapper* const tint_symbol_5, thread float4* const tint_symbol_6) {
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(*(tint_symbol_5)).arr[0] = x_1_param;
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(*(tint_symbol_5)).arr[1] = x_1_param_1;
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(*(tint_symbol_5)).arr[2] = x_1_param_2;
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main_1();
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main_out const tint_symbol_4 = {.x_2_1=*(tint_symbol_6)};
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return tint_symbol_4;
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}
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vertex tint_symbol_3 tint_symbol(tint_symbol_2 tint_symbol_1 [[stage_in]]) {
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thread tint_array_wrapper tint_symbol_7 = {};
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thread float4 tint_symbol_8 = 0.0f;
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main_out const inner_result = tint_symbol_inner(tint_symbol_1.x_1_param, tint_symbol_1.x_1_param_1, tint_symbol_1.x_1_param_2, &(tint_symbol_7), &(tint_symbol_8));
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tint_symbol_3 wrapper_result = {};
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wrapper_result.x_2_1 = inner_result.x_2_1;
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return wrapper_result;
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}
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