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

82 lines
1.5 KiB
HLSL

static float4 x_GLF_color = float4(0.0f, 0.0f, 0.0f, 0.0f);
void func_i1_(inout int x) {
int a = 0;
int data[9] = (int[9])0;
int temp[2] = (int[2])0;
int i = 0;
bool x_95 = false;
bool x_96_phi = false;
a = 0;
data[0] = 5;
while (true) {
const int x_56 = a;
const int x_57 = x;
if ((x_56 <= x_57)) {
} else {
break;
}
if ((a <= 10)) {
const int x_64 = a;
const int x_69 = data[min(a, 0)];
temp[min(x_64, 1)] = x_69;
a = (a + 1);
}
}
i = 0;
{
for(; (i < 2); i = (i + 1)) {
const int x_80 = i;
const int x_82 = temp[0];
data[x_80] = (x_82 + i);
}
}
const int x_89 = data[0];
const bool x_90 = (x_89 == 5);
x_96_phi = x_90;
if (x_90) {
const int x_94 = data[1];
x_95 = (x_94 == 6);
x_96_phi = x_95;
}
if (x_96_phi) {
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;
}
void main_1() {
int i_1 = 0;
int param = 0;
i_1 = 1;
{
for(; (i_1 < 6); i_1 = (i_1 + 1)) {
param = i_1;
func_i1_(param);
}
}
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_1 = {x_GLF_color};
return tint_symbol_1;
}
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;
}