6ba6cc57e1
By dropping the unconditional logic op disable at the end of rendering, this fixes GL errors being thrown in GLES2 contexts (which don't have logic ops). On desktop, this also means a little less overhead per draw call from taking one less trip through the glEnable/glDisable switch statement of doom in Mesa. The exchange here is that we end up taking a trip through it in the XV, Render, and gradient-generation paths. If the glEnable() is actually costly, we should probably cache our logic op state in our screen, since there's no way the GL could make that switch statement as cheap as the caller caching it would be. v2: Don't forget to set the logic op in Xephyr's drawing. Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Keith Packard <keithp@keithp.com> |
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