Slow AA and RGB text rendering

[Aaron Plattner]

Adam Jackson wrote:
> On Thursday 02 February 2006 03:11, Michel Dänzer wrote:
> 
>>On Wed, 2006-02-01 at 22:01 -0500, Chris wrote:
>>
>>>Indeed, NVidia's proprietary driver has its own acceleration
>>>architecture. (not EXA or XAA)  Nevertheless, it does implement
>>>Render and so anti-aliased or rgb-subpixel glyphs should
>>>automatically be accelerated if Xorg is working properly, right?
>>
>>AA yes, but RGB probably no, as I pointed out.
> 
> 
> My understanding is that nvidia hardware supports component alpha textures 
> directly, as of nv30 or so.  (This based on something I vaguely remember Mark 
> Vojkovich saying on one of the xfree86 lists some time ago.)
> 
> - ajax

It turns out that the Render extension and OpenGL have differing notions of what
"component alpha" means, so the NVIDIA driver currently does not accelerate
Render ops with component alpha.  This is something we hope to improve in a
future driver release.

-- Aaron