James Price a5d73ce965 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>
2021-08-04 22:15:28 +00:00

105 lines
2.9 KiB
Plaintext
Executable File

#include <metal_stdlib>
using namespace metal;
struct tint_padded_array_element {
/* 0x0000 */ int el;
/* 0x0004 */ int8_t tint_pad[12];
};
struct tint_array_wrapper {
/* 0x0000 */ tint_padded_array_element arr[2];
};
struct buf1 {
/* 0x0000 */ tint_array_wrapper x_GLF_uniform_int_values;
};
struct tint_padded_array_element_1 {
/* 0x0000 */ float el;
/* 0x0004 */ int8_t tint_pad_1[12];
};
struct tint_array_wrapper_1 {
/* 0x0000 */ tint_padded_array_element_1 arr[1];
};
struct buf0 {
/* 0x0000 */ tint_array_wrapper_1 x_GLF_uniform_float_values;
};
struct main_out {
float4 x_GLF_color_1;
};
struct tint_symbol_1 {
float4 x_GLF_color_1 [[color(0)]];
};
void main_1(constant buf1& x_8, thread float4* const tint_symbol_3) {
float f0 = 0.0f;
float s1 = 0.0f;
float f1 = 0.0f;
bool x_72 = false;
bool x_73_phi = false;
f0 = (10.0f - (0.000001f * floor((10.0f / 0.000001f))));
s1 = 9.99999935e-39f;
float const x_38 = s1;
if ((x_38 == 0.0f)) {
s1 = 1.0f;
}
bool x_62 = false;
bool x_71 = false;
bool x_63_phi = false;
bool x_72_phi = false;
float const x_42 = s1;
f1 = (10.0f - (x_42 * floor((10.0f / x_42))));
float const x_44 = f1;
float const x_46 = s1;
bool const x_48 = (isinf(x_44) | (x_46 == 1.0f));
x_73_phi = x_48;
if (!(x_48)) {
float const x_52 = f0;
float const x_53 = f1;
bool const x_54 = (x_52 == x_53);
x_63_phi = x_54;
if (!(x_54)) {
float const x_58 = f0;
float const x_60 = f0;
x_62 = ((x_58 > 0.99000001f) & (x_60 < 0.01f));
x_63_phi = x_62;
}
bool const x_63 = x_63_phi;
x_72_phi = x_63;
if (!(x_63)) {
float const x_67 = f1;
float const x_69 = f1;
x_71 = ((x_67 > 0.99000001f) & (x_69 < 0.01f));
x_72_phi = x_71;
}
x_72 = x_72_phi;
x_73_phi = x_72;
}
bool const x_73 = x_73_phi;
float const x_74 = f1;
if ((x_73 | (x_74 == 10.0f))) {
int const x_81 = x_8.x_GLF_uniform_int_values.arr[1].el;
int const x_84 = x_8.x_GLF_uniform_int_values.arr[0].el;
int const x_87 = x_8.x_GLF_uniform_int_values.arr[0].el;
int const x_90 = x_8.x_GLF_uniform_int_values.arr[1].el;
*(tint_symbol_3) = float4(float(x_81), float(x_84), float(x_87), float(x_90));
} else {
int const x_94 = x_8.x_GLF_uniform_int_values.arr[0].el;
float const x_95 = float(x_94);
*(tint_symbol_3) = float4(x_95, x_95, x_95, x_95);
}
return;
}
main_out tint_symbol_inner(constant buf1& x_8, thread float4* const tint_symbol_4) {
main_1(x_8, tint_symbol_4);
main_out const tint_symbol_2 = {.x_GLF_color_1=*(tint_symbol_4)};
return tint_symbol_2;
}
fragment tint_symbol_1 tint_symbol(constant buf1& x_8 [[buffer(1)]]) {
thread float4 tint_symbol_5 = 0.0f;
main_out const inner_result = tint_symbol_inner(x_8, &(tint_symbol_5));
tint_symbol_1 wrapper_result = {};
wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
return wrapper_result;
}