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https://github.com/encounter/dawn-cmake.git
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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>
119 lines
3.6 KiB
Plaintext
119 lines
3.6 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct tint_padded_array_element {
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/* 0x0000 */ int el;
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/* 0x0004 */ int8_t tint_pad[12];
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};
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struct tint_array_wrapper {
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/* 0x0000 */ tint_padded_array_element arr[3];
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};
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struct buf1 {
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/* 0x0000 */ tint_array_wrapper x_GLF_uniform_int_values;
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};
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struct tint_padded_array_element_1 {
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/* 0x0000 */ float el;
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/* 0x0004 */ int8_t tint_pad_1[12];
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};
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struct tint_array_wrapper_1 {
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/* 0x0000 */ tint_padded_array_element_1 arr[1];
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};
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struct buf0 {
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/* 0x0000 */ tint_array_wrapper_1 x_GLF_uniform_float_values;
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};
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struct main_out {
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float4 x_GLF_color_1;
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};
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struct tint_symbol_1 {
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float4 x_GLF_color_1 [[color(0)]];
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};
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void main_1(constant buf1& x_7, constant buf0& x_11, thread float4* const tint_symbol_3, thread float4* const tint_symbol_4) {
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int a = 0;
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int i = 0;
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int j = 0;
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int const x_36 = x_7.x_GLF_uniform_int_values.arr[2].el;
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a = x_36;
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int const x_38 = x_7.x_GLF_uniform_int_values.arr[2].el;
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i = x_38;
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while (true) {
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int const x_43 = i;
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int const x_45 = x_7.x_GLF_uniform_int_values.arr[0].el;
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if ((x_43 < x_45)) {
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} else {
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break;
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}
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int const x_49 = x_7.x_GLF_uniform_int_values.arr[2].el;
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j = x_49;
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while (true) {
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int const x_54 = j;
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int const x_56 = x_7.x_GLF_uniform_int_values.arr[0].el;
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if ((x_54 < x_56)) {
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} else {
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break;
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}
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while (true) {
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int const x_64 = x_7.x_GLF_uniform_int_values.arr[1].el;
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a = x_64;
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float const x_66 = (*(tint_symbol_3)).y;
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float const x_68 = x_11.x_GLF_uniform_float_values.arr[0].el;
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if ((x_66 < x_68)) {
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discard_fragment();
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}
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{
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int const x_72 = a;
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int const x_74 = x_7.x_GLF_uniform_int_values.arr[1].el;
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if ((x_72 < x_74)) {
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} else {
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break;
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}
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}
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}
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float const x_77 = (*(tint_symbol_3)).y;
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float const x_79 = x_11.x_GLF_uniform_float_values.arr[0].el;
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if ((x_77 < x_79)) {
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break;
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}
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{
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int const x_83 = j;
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j = as_type<int>((as_type<uint>(x_83) + as_type<uint>(1)));
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}
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}
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{
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int const x_85 = i;
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i = as_type<int>((as_type<uint>(x_85) + as_type<uint>(1)));
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}
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}
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int const x_87 = a;
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int const x_89 = x_7.x_GLF_uniform_int_values.arr[1].el;
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if ((x_87 == x_89)) {
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int const x_94 = a;
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int const x_97 = x_7.x_GLF_uniform_int_values.arr[2].el;
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int const x_100 = x_7.x_GLF_uniform_int_values.arr[2].el;
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int const x_102 = a;
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*(tint_symbol_4) = float4(float(x_94), float(x_97), float(x_100), float(x_102));
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} else {
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int const x_106 = x_7.x_GLF_uniform_int_values.arr[2].el;
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float const x_107 = float(x_106);
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*(tint_symbol_4) = float4(x_107, x_107, x_107, x_107);
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}
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return;
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}
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main_out tint_symbol_inner(constant buf1& x_7, constant buf0& x_11, float4 gl_FragCoord_param, thread float4* const tint_symbol_5, thread float4* const tint_symbol_6) {
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*(tint_symbol_5) = gl_FragCoord_param;
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main_1(x_7, x_11, tint_symbol_5, tint_symbol_6);
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main_out const tint_symbol_2 = {.x_GLF_color_1=*(tint_symbol_6)};
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return tint_symbol_2;
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}
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fragment tint_symbol_1 tint_symbol(float4 gl_FragCoord_param [[position]], constant buf1& x_7 [[buffer(1)]], constant buf0& x_11 [[buffer(0)]]) {
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thread float4 tint_symbol_7 = 0.0f;
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thread float4 tint_symbol_8 = 0.0f;
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main_out const inner_result = tint_symbol_inner(x_7, x_11, gl_FragCoord_param, &(tint_symbol_7), &(tint_symbol_8));
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tint_symbol_1 wrapper_result = {};
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wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
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return wrapper_result;
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}
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