Re: [Mesa3d-dev] miniglx backbuffer

[Rogelio S. <ro...@sm...>]

Looking at RADEONScreenInit, front buffer is cleared starting 
at ctx->FBAddress + info->frontOffset and back buffer at 
ctx->FBAddress + info->backOffset. It seems backStart is being 
set to the right value but im not sure.

On 2004-07-31 00:58:08 +0800 Jon Smirl <jon...@ya...> 
wrote:

> Keithw is the expert on this. I don't think you see use of 
> backStart in
> Mesa because you always draw to the front buffer, then call 
> drmSwap.
> drmSwap copies the front buffer to the back buffer. The back 
> buffer is
> the one being scanned so the changes appear.
> 
> You need to look in the drm drivers for page flipping and 
> swapping
> code.
> 
> --- Rogelio Serrano <ro...@sm...> wrote:
> 
>> Is the back buffer used at all in miniglx? I dont see any use 
>> of backStart 
>> anywhere in Mesa.
>> 
>> 
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> 
> 
> =====
> Jon Smirl
> jon...@ya...
> 
> 
> 		
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