Re: [PATCH 5/5] ddraw: Enumerate DXT2 and DXT4

[Henri Verbeet]

On 5 September 2013 10:42, Stefan Dösinger  wrote:
> Yes, we don't actually support those, but that's wined3d's problem, not
> ddraw's.

We do. The difference between DXT2/DXT3 and DXT4/DXT5 is just a
convention wrt. storing pre-multiplied alpha or not, there's no
difference in the actual encoding.

[PATCH 5/5] ddraw: Enumerate DXT2 and DXT4

[Stefan Dösinger]

My understanding is that we should do rgb *= a in the shader. Writing tests for this is on my todo list, but very close to the bottom.

(Sorry for the top post. Stupid android mail program)

Henri Verbeet  schrieb:
> On 5 September 2013 10:42, Stefan Dösinger 
> wrote:
> > Yes, we don't actually support those, but that's wined3d's problem,
>
> not
> > ddraw's.
>
> We do. The difference between DXT2/DXT3 and DXT4/DXT5 is just a
> convention wrt. storing pre-multiplied alpha or not, there's no
> difference in the actual encoding.