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transform/shader_io: Generate a wrapper function
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>
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Tint LUCI CQ
parent
3e92e9f8ba
commit
a5d73ce965
@@ -17,8 +17,8 @@ void main_1() {
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const uint scalar_offset = ((16u * uint(0))) / 4;
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const int x_32 = asint(x_6[scalar_offset / 4][scalar_offset % 4]);
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const int x_34 = idx;
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const tint_padded_array_element tint_symbol_3[2] = {{x_30}, {x_32}};
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indexable = tint_symbol_3;
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const tint_padded_array_element tint_symbol_2[2] = {{x_30}, {x_32}};
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indexable = tint_symbol_2;
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const int x_36 = indexable[x_34].el;
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a = x_36;
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const int x_37 = a;
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@@ -47,9 +47,15 @@ struct tint_symbol {
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float4 x_GLF_color_1 : SV_Target0;
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};
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tint_symbol main() {
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main_out main_inner() {
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main_1();
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const main_out tint_symbol_1 = {x_GLF_color};
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const tint_symbol tint_symbol_4 = {tint_symbol_1.x_GLF_color_1};
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return tint_symbol_4;
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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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@@ -18,7 +18,7 @@ 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_6, thread float4* const tint_symbol_5) {
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void main_1(constant buf1& x_6, thread float4* const tint_symbol_4) {
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int idx = 0;
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int a = 0;
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tint_array_wrapper indexable = {};
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@@ -27,8 +27,8 @@ void main_1(constant buf1& x_6, thread float4* const tint_symbol_5) {
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int const x_30 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_32 = x_6.x_GLF_uniform_int_values.arr[0].el;
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int const x_34 = idx;
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tint_array_wrapper const tint_symbol_3 = {.arr={{.el=x_30}, {.el=x_32}}};
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indexable = tint_symbol_3;
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tint_array_wrapper const tint_symbol_2 = {.arr={{.el=x_30}, {.el=x_32}}};
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indexable = tint_symbol_2;
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int const x_36 = indexable.arr[x_34].el;
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a = x_36;
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int const x_37 = a;
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@@ -38,20 +38,26 @@ void main_1(constant buf1& x_6, thread float4* const tint_symbol_5) {
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int const x_48 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_51 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_54 = x_6.x_GLF_uniform_int_values.arr[0].el;
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*(tint_symbol_5) = float4(float(x_45), float(x_48), float(x_51), float(x_54));
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*(tint_symbol_4) = float4(float(x_45), float(x_48), float(x_51), float(x_54));
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} else {
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int const x_58 = x_6.x_GLF_uniform_int_values.arr[1].el;
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float const x_59 = float(x_58);
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*(tint_symbol_5) = float4(x_59, x_59, x_59, x_59);
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*(tint_symbol_4) = float4(x_59, x_59, x_59, x_59);
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}
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return;
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}
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fragment tint_symbol_1 tint_symbol(constant buf1& x_6 [[buffer(1)]]) {
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thread float4 tint_symbol_6 = 0.0f;
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main_1(x_6, &(tint_symbol_6));
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main_out const tint_symbol_2 = {.x_GLF_color_1=tint_symbol_6};
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tint_symbol_1 const tint_symbol_4 = {.x_GLF_color_1=tint_symbol_2.x_GLF_color_1};
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return tint_symbol_4;
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main_out tint_symbol_inner(constant buf1& x_6, thread float4* const tint_symbol_5) {
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main_1(x_6, tint_symbol_5);
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main_out const tint_symbol_3 = {.x_GLF_color_1=*(tint_symbol_5)};
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return tint_symbol_3;
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}
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fragment tint_symbol_1 tint_symbol(constant buf1& x_6 [[buffer(1)]]) {
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thread float4 tint_symbol_6 = 0.0f;
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main_out const inner_result = tint_symbol_inner(x_6, &(tint_symbol_6));
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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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@@ -17,8 +17,8 @@ void main_1() {
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const uint scalar_offset = ((16u * uint(0))) / 4;
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const int x_32 = asint(x_6[scalar_offset / 4][scalar_offset % 4]);
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const int x_34 = idx;
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const tint_padded_array_element tint_symbol_3[2] = {{x_30}, {x_32}};
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indexable = tint_symbol_3;
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const tint_padded_array_element tint_symbol_2[2] = {{x_30}, {x_32}};
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indexable = tint_symbol_2;
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const int x_36 = indexable[x_34].el;
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a = x_36;
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const int x_37 = a;
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@@ -47,9 +47,15 @@ struct tint_symbol {
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float4 x_GLF_color_1 : SV_Target0;
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};
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tint_symbol main() {
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main_out main_inner() {
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main_1();
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const main_out tint_symbol_1 = {x_GLF_color};
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const tint_symbol tint_symbol_4 = {tint_symbol_1.x_GLF_color_1};
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return tint_symbol_4;
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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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@@ -18,7 +18,7 @@ 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_6, thread float4* const tint_symbol_5) {
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void main_1(constant buf1& x_6, thread float4* const tint_symbol_4) {
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int idx = 0;
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int a = 0;
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tint_array_wrapper indexable = {};
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@@ -27,8 +27,8 @@ void main_1(constant buf1& x_6, thread float4* const tint_symbol_5) {
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int const x_30 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_32 = x_6.x_GLF_uniform_int_values.arr[0].el;
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int const x_34 = idx;
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tint_array_wrapper const tint_symbol_3 = {.arr={{.el=x_30}, {.el=x_32}}};
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indexable = tint_symbol_3;
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tint_array_wrapper const tint_symbol_2 = {.arr={{.el=x_30}, {.el=x_32}}};
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indexable = tint_symbol_2;
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int const x_36 = indexable.arr[x_34].el;
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a = x_36;
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int const x_37 = a;
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@@ -38,20 +38,26 @@ void main_1(constant buf1& x_6, thread float4* const tint_symbol_5) {
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int const x_48 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_51 = x_6.x_GLF_uniform_int_values.arr[1].el;
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int const x_54 = x_6.x_GLF_uniform_int_values.arr[0].el;
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*(tint_symbol_5) = float4(float(x_45), float(x_48), float(x_51), float(x_54));
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*(tint_symbol_4) = float4(float(x_45), float(x_48), float(x_51), float(x_54));
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} else {
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int const x_58 = x_6.x_GLF_uniform_int_values.arr[1].el;
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float const x_59 = float(x_58);
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*(tint_symbol_5) = float4(x_59, x_59, x_59, x_59);
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*(tint_symbol_4) = float4(x_59, x_59, x_59, x_59);
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}
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return;
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}
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fragment tint_symbol_1 tint_symbol(constant buf1& x_6 [[buffer(1)]]) {
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thread float4 tint_symbol_6 = 0.0f;
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main_1(x_6, &(tint_symbol_6));
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main_out const tint_symbol_2 = {.x_GLF_color_1=tint_symbol_6};
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tint_symbol_1 const tint_symbol_4 = {.x_GLF_color_1=tint_symbol_2.x_GLF_color_1};
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return tint_symbol_4;
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main_out tint_symbol_inner(constant buf1& x_6, thread float4* const tint_symbol_5) {
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main_1(x_6, tint_symbol_5);
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main_out const tint_symbol_3 = {.x_GLF_color_1=*(tint_symbol_5)};
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return tint_symbol_3;
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}
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fragment tint_symbol_1 tint_symbol(constant buf1& x_6 [[buffer(1)]]) {
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thread float4 tint_symbol_6 = 0.0f;
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main_out const inner_result = tint_symbol_inner(x_6, &(tint_symbol_6));
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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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