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transform/shader_io: Generate a wrapper function

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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>
This commit is contained in:
James Price
2021-08-04 22:15:28 +00:00
committed by Tint LUCI CQ
parent 3e92e9f8ba
commit a5d73ce965
3866 changed files with 49323 additions and 26508 deletions
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12
test/expressions/literals/-inf.spvasm.expected.hlsl
View File

@@ -12,9 +12,15 @@ struct tint_symbol {
float4 out_var_SV_TARGET_1 : SV_Target0;
};
tint_symbol main() {
main_out main_inner() {
main_1();
const main_out tint_symbol_1 = {out_var_SV_TARGET};
const tint_symbol tint_symbol_2 = {tint_symbol_1.out_var_SV_TARGET_1};
return tint_symbol_2;
return tint_symbol_1;
}
tint_symbol main() {
const main_out inner_result = main_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}

18
test/expressions/literals/-inf.spvasm.expected.msl
View File

@@ -8,16 +8,22 @@ struct tint_symbol_1 {
float4 out_var_SV_TARGET_1 [[color(0)]];
};
void main_1(thread float4* const tint_symbol_4) {
*(tint_symbol_4) = float4(-INFINITY, -INFINITY, -INFINITY, -INFINITY);
void main_1(thread float4* const tint_symbol_3) {
*(tint_symbol_3) = float4(-INFINITY, -INFINITY, -INFINITY, -INFINITY);
return;
}
main_out tint_symbol_inner(thread float4* const tint_symbol_4) {
main_1(tint_symbol_4);
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=*(tint_symbol_4)};
return tint_symbol_2;
}
fragment tint_symbol_1 tint_symbol() {
thread float4 tint_symbol_5 = 0.0f;
main_1(&(tint_symbol_5));
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=tint_symbol_5};
tint_symbol_1 const tint_symbol_3 = {.out_var_SV_TARGET_1=tint_symbol_2.out_var_SV_TARGET_1};
return tint_symbol_3;
main_out const inner_result = tint_symbol_inner(&(tint_symbol_5));
tint_symbol_1 wrapper_result = {};
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}

12
test/expressions/literals/inf.spvasm.expected.hlsl
View File

@@ -12,9 +12,15 @@ struct tint_symbol {
float4 out_var_SV_TARGET_1 : SV_Target0;
};
tint_symbol main() {
main_out main_inner() {
main_1();
const main_out tint_symbol_1 = {out_var_SV_TARGET};
const tint_symbol tint_symbol_2 = {tint_symbol_1.out_var_SV_TARGET_1};
return tint_symbol_2;
return tint_symbol_1;
}
tint_symbol main() {
const main_out inner_result = main_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}

18
test/expressions/literals/inf.spvasm.expected.msl
View File

@@ -8,16 +8,22 @@ struct tint_symbol_1 {
float4 out_var_SV_TARGET_1 [[color(0)]];
};
void main_1(thread float4* const tint_symbol_4) {
*(tint_symbol_4) = float4(INFINITY, INFINITY, INFINITY, INFINITY);
void main_1(thread float4* const tint_symbol_3) {
*(tint_symbol_3) = float4(INFINITY, INFINITY, INFINITY, INFINITY);
return;
}
main_out tint_symbol_inner(thread float4* const tint_symbol_4) {
main_1(tint_symbol_4);
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=*(tint_symbol_4)};
return tint_symbol_2;
}
fragment tint_symbol_1 tint_symbol() {
thread float4 tint_symbol_5 = 0.0f;
main_1(&(tint_symbol_5));
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=tint_symbol_5};
tint_symbol_1 const tint_symbol_3 = {.out_var_SV_TARGET_1=tint_symbol_2.out_var_SV_TARGET_1};
return tint_symbol_3;
main_out const inner_result = tint_symbol_inner(&(tint_symbol_5));
tint_symbol_1 wrapper_result = {};
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}

12
test/expressions/literals/nan.spvasm.expected.hlsl
View File

@@ -12,9 +12,15 @@ struct tint_symbol {
float4 out_var_SV_TARGET_1 : SV_Target0;
};
tint_symbol main() {
main_out main_inner() {
main_1();
const main_out tint_symbol_1 = {out_var_SV_TARGET};
const tint_symbol tint_symbol_2 = {tint_symbol_1.out_var_SV_TARGET_1};
return tint_symbol_2;
return tint_symbol_1;
}
tint_symbol main() {
const main_out inner_result = main_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}

18
test/expressions/literals/nan.spvasm.expected.msl
View File

@@ -8,16 +8,22 @@ struct tint_symbol_1 {
float4 out_var_SV_TARGET_1 [[color(0)]];
};
void main_1(thread float4* const tint_symbol_4) {
*(tint_symbol_4) = float4(NAN, NAN, NAN, NAN);
void main_1(thread float4* const tint_symbol_3) {
*(tint_symbol_3) = float4(NAN, NAN, NAN, NAN);
return;
}
main_out tint_symbol_inner(thread float4* const tint_symbol_4) {
main_1(tint_symbol_4);
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=*(tint_symbol_4)};
return tint_symbol_2;
}
fragment tint_symbol_1 tint_symbol() {
thread float4 tint_symbol_5 = 0.0f;
main_1(&(tint_symbol_5));
main_out const tint_symbol_2 = {.out_var_SV_TARGET_1=tint_symbol_5};
tint_symbol_1 const tint_symbol_3 = {.out_var_SV_TARGET_1=tint_symbol_2.out_var_SV_TARGET_1};
return tint_symbol_3;
main_out const inner_result = tint_symbol_inner(&(tint_symbol_5));
tint_symbol_1 wrapper_result = {};
wrapper_result.out_var_SV_TARGET_1 = inner_result.out_var_SV_TARGET_1;
return wrapper_result;
}