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

[Henri Verbeet]

On 5 September 2013 10:42, Stefan Dösinger <stefan(a)codeweavers.com> 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 <hverbeet(a)gmail.com> schrieb:
> On 5 September 2013 10:42, Stefan Dösinger <stefan(a)codeweavers.com>
> 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.

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