Michael wrote: > > On Mon, Apr 29, 2002 at 12:53:15AM -0600, Jens Owen wrote: > > Is there any compelling reason to report single buffer visuals? > > Dunno, you tell me ;o) > > Here's how I noticed, some of the Mesa demos use single buffer (or > either as an option). The existing (commented out) page flipping code > checks for a double buffered visual before enabling page flipping, the > result is your sb mesa demo is using a db visual and doesn't call swap > buffers so you don't see anything. > > Admittedly the page flipping doesn't exist yet, what I did to get it > working is a kludge but something here has it wrong - either the mesa > demo isn't checking the visual it gets from glut or glut doesn't tell > you this kind of thing, or we need sb visuals for apps that ask for > them. I've not really looked far enough to see which. > > It's obviously not an issue until page flipping is back, but I think an > extra loop to add an SB visual for each visual we currently do would be > all that's needed...
OpenGL doesn't require any single-buffered visuals. If you request a single-buffered visual with GLUT but only double- buffered visuals are available, GLUT will use a double-buffered visual and call glDraw/ReadBuffer(GL_FRONT) during initializations. glutSwap- Buffers() will just do a glFlush or glFinish. I don't see a compelling argument for single-buffered visuals but it would be easy to do if someone really needed it. -Brian _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
