mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-06-02 12:41:36 +00:00
46ee63933c
Prevents UB for divide-by-zero and integer overflow when dividing Fixed: tint:1349 Change-Id: Ieef66d27d7aec3011628ced076b2bccc7770a8af Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/108925 Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: Dan Sinclair <dsinclair@chromium.org> Kokoro: Kokoro <noreply+kokoro@google.com>
14 lines
522 B
Plaintext
14 lines
522 B
Plaintext
#include <metal_stdlib>
|
|
|
|
using namespace metal;
|
|
int tint_div(int lhs, int rhs) {
|
|
return (lhs / select(rhs, 1, bool((rhs == 0) | bool((lhs == (-2147483647 - 1)) & (rhs == -1)))));
|
|
}
|
|
|
|
void foo(threadgroup int* const tint_symbol, threadgroup float4* const tint_symbol_1, threadgroup float2x2* const tint_symbol_2) {
|
|
*(tint_symbol) = tint_div(*(tint_symbol), 2);
|
|
*(tint_symbol_1) = (*(tint_symbol_1) * float4x4(float4(0.0f), float4(0.0f), float4(0.0f), float4(0.0f)));
|
|
*(tint_symbol_2) = (*(tint_symbol_2) * 2.0f);
|
|
}
|
|
|