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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>
54 lines
1.5 KiB
HLSL
54 lines
1.5 KiB
HLSL
void set_float2(inout float2 vec, int idx, float val) {
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vec = (idx.xx == int2(0, 1)) ? val.xx : vec;
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}
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cbuffer cbuffer_x_6 : register(b0, space0) {
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uint4 x_6[2];
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};
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cbuffer cbuffer_x_8 : register(b1, space0) {
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uint4 x_8[2];
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};
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static float4 x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
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void main_1() {
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float2 v1 = float2(0.0f, 0.0f);
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const uint scalar_offset = ((16u * uint(0))) / 4;
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const float x_35 = asfloat(x_6[scalar_offset / 4][scalar_offset % 4]);
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v1 = float2(x_35, x_35);
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const uint scalar_offset_1 = ((16u * uint(0))) / 4;
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const int x_38 = asint(x_8[scalar_offset_1 / 4][scalar_offset_1 % 4]);
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const float x_40 = v1.y;
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set_float2(v1, x_38, ldexp(x_40, -256));
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if ((mul(float2x2(float2(x_35, 0.0f), float2(0.0f, x_35)), v1).x == x_35)) {
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const float x_53 = float(x_38);
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const int x_55 = asint(x_8[1].x);
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const float x_56 = float(x_55);
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x_GLF_color = float4(x_53, x_56, x_56, x_53);
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} else {
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const int x_59 = asint(x_8[1].x);
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const float x_60 = float(x_59);
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x_GLF_color = float4(x_60, x_60, x_60, x_60);
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}
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return;
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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 {
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float4 x_GLF_color_1 : SV_Target0;
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};
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main_out main_inner() {
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main_1();
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const main_out tint_symbol_3 = {x_GLF_color};
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return tint_symbol_3;
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}
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tint_symbol main() {
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const main_out inner_result = main_inner();
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tint_symbol wrapper_result = (tint_symbol)0;
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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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