Ian Romanick wrote:
[EMAIL PROTECTED] wrote:
Hello,
No idea if this problem has been raised, but I had a problem running the demos
@ http://www.garagegames.com on a radeon ddr 32.
It seems to crash (lock hardware, the new IRQ code gives EBUSY, but the exit()
isn't clean) rendering triangle fan elts :-
xc/extras/Mesa/src/tnl_dd/t_dd_dmatmp2.h for (j = start + 1 ; j + 1 < count; j += nr - 1 ) { nr = MIN2( currentsz, count - j + 1 ); TAG(emit_elts)( ctx, elts+start, 1 ); TAG(emit_elts)( ctx, elts+j, nr - 1 ); NEW_PRIMITIVE(); currentsz = dmasz;
iff the first vertex is emitted by itself at the end of a CmdBuf.
Here's a patch that prevents Think Tanks (and possibly other heavy users of triangle fans) from crashing on Radeon hardware. There seem to be some other texture related problems, but I haven't had a chance to delve into that. This should also fix similar problems on R200 hardware, but I haven't tested that out yet either.
Basically, I just in-lined emit_elts and did some minor clean-up. One problem that I have with emit_elts is that it seems to assume that the number of elts to emit is *always* a multiple of 2. Clearly this may not always be the case.
I just tried it out on a 64MB R200 (my R100 card is 32MB), and the texturing problems went away. My current thinking, therefore, is that there's a texture management problem lurking in there. I'll try to take a look into it. Could this be the same as the (fixed) problem with the i830 driver?
Unlikely, as the i830 just uses memcpy to the texture memory to upload textures, while the radeon etc, use a blit/dma operation which is synchronized with the 3d render stream. It might be the case that some of the synchronization commands aren't working right, but that's a slight long shot.
Keith
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