| Issue |
147109
|
| Summary |
[DirectX] Validation errors: `Pointer type bitcast must be have same size` and `Bitcast on struct types is not allowed`
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Icohedron
|
## The Problem
After resolving #146974, validation errors of the form `Pointer type bitcast must be have same size` and `Bitcast on struct types is not allowed` appear.
There are 16 occurrences of both errors in total, and they all originate from two DML shaders: `OneHot_256_uint16_native_int64_emulated_4` and `OneHot_256_uint16_native_int32_native_4`
## Reproducing the problem
Validate one of the problematic DML shaders mentioned.
```
dxv validation/OneHot_256_uint16_native_int32_native_4.dat
```
This minimal shader also reproduces the validation error when validated after being compiled
```hlsl
// compile args: -E CSMain -T cs_6_2 -enable-16bit-types
RWStructuredBuffer<uint> output;
struct MyStruct {
uint arr[2];
};
[numthreads(1, 1, 1)]
void CSMain(uint3 Tid: SV_DispatchThreadID) {
MyStruct s = {Tid.x, 0};
uint d = s.arr[Tid.y];
output[0] = d ;
}
```
https://godbolt.org/z/GexqvYc1d
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