yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

Yong HeFix a bug that causes a struct field to be initialized twice. (#8619)54e1d0271

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1//TEST:SIMPLE(filecheck=CHECK):-target cuda -entry computeMain -stage compute
2
3// Test on a regression that caused a field to be initialized twice in the ctor.
4
5// CHECK-COUNT-1: callOnce{{.*}}(int(1000))
6// CHECK-COUNT-1: {{.*}}->origin_0 = 
7int callOnce(int x)
8{ 
9    *result += 1.0f;  // cause some side effect so the call is not eliminated
10     return 999;
11}
12
13public struct Ray
14{
15    public int calledOnce = callOnce(1000);
16    public float3 origin = {};
17    public float t_min = 0;
18    public float3 dir = {};
19    public float t_max = 0;
20
21    public __init(float3 origin, float3 dir, float t_min = 0.f, float t_max = 1000.0)
22    {
23        this.origin = origin;
24        this.dir = dir;
25        this.t_min = t_min;
26        this.t_max = t_max;
27    }
28
29    public RayDesc to_ray_desc() { return { origin, t_min, dir, t_max }; }
30};
31
32uniform float* result;
33
34[numthreads(1,1,1)]
35void computeMain()
36{
37    Ray r = Ray(float3(1,2,3), float3(4,5,6));
38    RayDesc rd = r.to_ray_desc();
39    *result = rd.Direction.x;
40}