Hi, a series of three patches to improve the dri2 swap scheduling and timestamping for the current intel ddx. The first one enables proper OML_sync_control timestamping while triple-buffering is enabled and XOrg 1.12+ with DRI2SwapLimit support is in use. So far, timestamping was unuseable with triple-buffering, only worked with double-buffering. The second one repairs the broken pageflip swap scheduling, which is apparently in a frightening state for timing sensitive apps since a year, due to a tiny but really ugly bug. In a perfect implementation of Murphy's law, the same commit that broke the scheduling also disabled the builtin correctness checks that were supposed to catch such bugs. The third one proposes to revert 'SwapBuffersWait' to its old behaviour where it didn't affect pageflipping. I just can't think of a case where the current behaviour makes any sense, not even for benchmarking? But maybe i'm overlooking something. All patches were tested against an Intel 945-GME gpu. I don't really care about the 'SwapBuffersWait' patch one way or the other, but the first two are crucial to make the intel ddx useable in a painless and safe way again for users of timing sensitive applications. Thanks, -mario
