skia2/resources/sksl/shared/DeadStripFunctions.sksl
John Stiles 95eadd32c1 Rename 'unpremul_float' to 'unpremul.'
Now that name mangling is implemented, we don't need to worry about name
collisions when high-precision types are disabled.

Change-Id: Ic0def3e629deeb804745ff683826946947c898e3
Bug: skia:10851
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/387758
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-03-22 17:34:16 +00:00

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/*#pragma settings NoInline*/
uniform half4 colorGreen, colorRed;
half4 dead_fn(half4 a, half4 b) {
return a * b;
}
half4 live_fn(half4 a, half4 b) {
return a + b;
}
half4 main() {
const bool TRUE = true, FALSE = false;
half4 a, b;
@if (FALSE) {
// Dead stripping a user function.
half4 unused = dead_fn(half4(0.5), half4(2));
} else {
// A live user function.
a = live_fn(half4(3), half4(-5));
}
@if (TRUE) {
// A live built-in function.
b = unpremul(half4(1));
} else {
// Dead stripping a built-in function. (This is a separate overload of `unpremul`.)
float4 unused = unpremul(float4(-1));
}
return (a != half4(0) && b != half4(0)) ? colorGreen : colorRed;
}