[PATCH vkd3d v2 04/10] vkd3d-shader/hlsl: Decay matrices of shape 1xN to vectors of length N.

[Giovanni Mascellani]

Hi,

Il 15/10/21 19:47, Zebediah Figura (she/her) ha scritto:
> What leads you to this conclusion? Even the most obvious case I checked 
> suggests this isn't true:
> 
> ---
> 
> uniform float2x4 x;
> uniform float1x4 y;
> 
> float4 main() : sv_target
> {
>      return (x + y).xyzw;
> }
> 
> ---

Ah, interesting. My source was this:

http://shader-playground.timjones.io/cfaa21ebc1961e76a302e48e87a7a033

The error message says: "error X3017: cannot convert from 'const const 
float4' to 'texture'". But clearly I was too optimistic about the self 
consistency of the native compiler.

I think for the moment it is safe to drop this patch. Unfortunately it 
is referenced in the commit message of the following one (05/10), so 
I'll resend the whole series again. The content of 05/10 still seems to 
be valid even when tested with swizzling: the type of x+y is the type of 
x when x and y are a vector and a matrix (in some order) and have the 
same number of entries.

Thanks, Giovanni.