[Mesa-dev] Mesa (primitive-restart): 682 new commits
brianp at vmware.com
Thu Aug 12 06:08:47 PDT 2010
On 08/11/2010 09:40 PM, Luca Barbieri wrote:
> [Apparently brianp at kemper.freedesktop.org is forwarded to
> brian.paul at tungstengraphics.com, which is no longer valid.]
> I'd suggest to put it in struct pipe_index_buffer.
> The argument is that the index buffer needs to be prepared
> specifically for the primitive restart enable setting:
> 1. If the index buffer has no restart indices, using primitive restart
> will have no effect
> 2. If the index buffer has restart indices, not using primitive
> restart will cause out-of-bounds accesses or weird rendering results
> Also, the index size is there too, so there is no question of what
> happens if the primitive restart index doesn't fit in the index size.
> Currently the Mesa state tracker binds the index buffer for every draw
> call, and thus would be unaffected (but it should stop doing that).
The thing is, primitive restart also applies to non-indexed
primitives. It would be a little weird to set index buffer state for
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