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

175 lines
4.1 KiB
HLSL

cbuffer cbuffer_x_7 : register(b0, space0) {
uint4 x_7[1];
};
static float4 x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
void main_1() {
int a = 0;
int i0 = 0;
int i1 = 0;
int i2 = 0;
int i3 = 0;
int i4 = 0;
int i5 = 0;
int i6 = 0;
int i7 = 0;
int i8_1 = 0;
int i9 = 0;
a = 0;
i0 = 0;
while (true) {
const int x_40 = i0;
const int x_42 = asint(x_7[0].x);
if ((x_40 < x_42)) {
} else {
break;
}
i1 = 0;
while (true) {
const int x_49 = i1;
const int x_51 = asint(x_7[0].x);
if ((x_49 < x_51)) {
} else {
break;
}
i2 = 0;
while (true) {
const int x_58 = i2;
const int x_60 = asint(x_7[0].x);
if ((x_58 < x_60)) {
} else {
break;
}
i3 = 0;
while (true) {
const int x_67 = i3;
const int x_69 = asint(x_7[0].x);
if ((x_67 < (x_69 + 2))) {
} else {
break;
}
i4 = 0;
while (true) {
const int x_77 = i4;
const int x_79 = asint(x_7[0].x);
if ((x_77 < x_79)) {
} else {
break;
}
i5 = 0;
while (true) {
const int x_86 = i5;
const int x_88 = asint(x_7[0].x);
if ((x_86 < x_88)) {
} else {
break;
}
while (true) {
const int x_96 = asint(x_7[0].x);
if ((x_96 > 0)) {
} else {
break;
}
i6 = 0;
while (true) {
const int x_103 = i6;
const int x_105 = asint(x_7[0].x);
if ((x_103 < x_105)) {
} else {
break;
}
i7 = 0;
while (true) {
const int x_112 = i7;
const int x_114 = asint(x_7[0].x);
if ((x_112 < x_114)) {
} else {
break;
}
i8_1 = 0;
while (true) {
const int x_121 = i8_1;
const int x_123 = asint(x_7[0].x);
if ((x_121 < x_123)) {
} else {
break;
}
i9 = 0;
while (true) {
const int x_130 = i9;
const int x_132 = asint(x_7[0].x);
if ((x_130 < x_132)) {
} else {
break;
}
a = (a + 1);
{
i9 = (i9 + 1);
}
}
{
i8_1 = (i8_1 + 1);
}
}
{
i7 = (i7 + 1);
}
}
{
i6 = (i6 + 1);
}
}
break;
}
{
i5 = (i5 + 1);
}
}
{
i4 = (i4 + 1);
}
}
{
i3 = (i3 + 1);
}
}
{
i2 = (i2 + 1);
}
}
{
i1 = (i1 + 1);
}
}
{
i0 = (i0 + 1);
}
}
if ((a == 3)) {
x_GLF_color = float4(1.0f, 0.0f, 0.0f, 1.0f);
} else {
x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
}
return;
}
struct main_out {
float4 x_GLF_color_1;
};
struct tint_symbol {
float4 x_GLF_color_1 : SV_Target0;
};
main_out main_inner() {
main_1();
const main_out tint_symbol_2 = {x_GLF_color};
return tint_symbol_2;
}
tint_symbol main() {
const main_out inner_result = main_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
return wrapper_result;
}