dawn-cmake/test/tint/statements/compound_assign/divide_by_zero.wgsl.expected.fxc.hlsl
Antonio Maiorano ee665a4240 tint: add precise float mod polyfill and enable it for HLSL
HLSL's % operator results in less precise results than expected.

Bug: tint:1799
Change-Id: I1a9572288a0e536f0fc9c0748a25dcf58551e57b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/119760
Kokoro: Kokoro <noreply+kokoro@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
2023-02-14 16:12:59 +00:00

36 lines
864 B
HLSL

[numthreads(1, 1, 1)]
void unused_entry_point() {
return;
}
static int a = 0;
static float b = 0.0f;
int tint_div(int lhs, int rhs) {
return (lhs / (((rhs == 0) | ((lhs == -2147483648) & (rhs == -1))) ? 1 : rhs));
}
int tint_mod(int lhs, int rhs) {
const int rhs_or_one = (((rhs == 0) | ((lhs == -2147483648) & (rhs == -1))) ? 1 : rhs);
if (any(((uint((lhs | rhs_or_one)) & 2147483648u) != 0u))) {
return (lhs - ((lhs / rhs_or_one) * rhs_or_one));
} else {
return (lhs % rhs_or_one);
}
}
float tint_float_mod(float lhs, float rhs) {
return (lhs - (trunc((lhs / rhs)) * rhs));
}
void foo(int maybe_zero) {
a = tint_div(a, 0);
a = tint_mod(a, 0);
a = tint_div(a, maybe_zero);
a = tint_mod(a, maybe_zero);
b = (b / 0.0f);
b = tint_float_mod(b, 0.0f);
b = (b / float(maybe_zero));
b = tint_float_mod(b, float(maybe_zero));
}