ctx->driverPrivate = (void *)info;
info->gartFastWrite = RADEON_DEFAULT_AGP_FAST_WRITE;
info->gartSize = RADEON_DEFAULT_AGP_SIZE;
info->gartTexSize = RADEON_DEFAULT_AGP_TEX_SIZE;
info->bufSize = RADEON_DEFAULT_BUFFER_SIZE;
info->ringSize = RADEON_DEFAULT_RING_SIZE;
info->page_flip_enable = RADEON_DEFAULT_PAGE_FLIP;
There seems to be no way to configure my r200 to do page flipping! I've hacked the last line above to force page_flip_enable=1, and the page flipping seems to work with my tests, but this begs the question -
Is there some other reason that page flipping is disabled (and cannot be re-enabled by configuration settings)? In other words, will the driver fail miserably under some conditions which I have not tried?
I am using mesa linux-solo and radeonfb (miniglx). My application requires strict phase-locking with the video refresh rate. I can achieve this without page flipping, but the back-to-front buffer copy takes too long and I get a tear. Page flipping cleans this up nicely and my app happily marches in lockstep with the video refresh, no tears, just like the baby shampoo.
I'd like to add a setting to miniglx.conf, enablePageFlip - something like I can put in my xorg.conf under my r200's "Device" section. I'd be glad to submit a patch if someone can give me a little guidance on the mechanics of creating the patch.
Thanks,
Dan
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