Re: [PATCH 0/2] MR219: vkd3d-shader: Implement tex2Dproj().

[Francisco Casas (＠fcasas)]

I suggest adding at least this test:

```hlsl
[pixel shader todo]
sampler sam;
float4 p;

float4 main() : sv_target
{
    return tex2Dproj(sam, p);
}

[test]
uniform 0 float4 1.0 1.0 1234.0 2.0
todo draw quad
todo probe all rgba (0.25, 0.0, 0.25, 0.0)
```
I confirmed that is the expected behavior using the minitestbot.

Even though to get this to pass we need to lower combined sample expressions, but that seems close in the horizon (!209).