41092 2010-06-23 12:14:26 -0700 Index validation caches buffer size information too aggressively 2010-06-28 10:43:48 -0700 1 1 1 Unclassified WebKit WebGL 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 41108 1 kbr kbr cmarrin dglazkov gman oliver zmo oldest_to_newest 242011 0 kbr 2010-06-23 12:14:26 -0700 Gregg Tavares discovered that the index validation code is caching buffer size information too aggressively. If vertexAttribPointer is called with a given buffer which is not large enough to cover a given draw call, but is subsequently resized via bufferData, the draw call is failing rather than succeeding. 242258 1 59605 kbr 2010-06-23 19:46:48 -0700 Created attachment 59605 Patch From the ChangeLog: Do not cache the buffer size during vertexAttribPointer, only the attributes used to compute the number of required elements. Compute the number of valid elements each time based on the latched buffer. Tested in Safari and Chromium on Mac OS X in both debug and release mode to ensure no performance regressions. 243042 2 gman 2010-06-25 09:19:18 -0700 LGTM 243202 3 59605 dglazkov 2010-06-25 14:33:08 -0700 Comment on attachment 59605 Patch ok. 243768 4 kbr 2010-06-28 10:42:00 -0700 Committed r62018: <http://trac.webkit.org/changeset/62018> 243769 5 kbr 2010-06-28 10:43:48 -0700 Note that the patch landed was slightly different than the one reviewed due to merging with the fix for https://bugs.webkit.org/show_bug.cgi?id=41108 . 59605 2010-06-23 19:46:48 -0700 2010-06-25 14:33:07 -0700 Patch index-validation.patch text/plain 12213 kbr SW5kZXg6IFdlYkNvcmUvQ2hhbmdlTG9nCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIFdlYkNvcmUvQ2hhbmdlTG9n CShyZXZpc2lvbiA2MTcyNykKKysrIFdlYkNvcmUvQ2hhbmdlTG9nCSh3b3JraW5nIGNvcHkpCkBA IC0xLDMgKzEsMjIgQEAKKzIwMTAtMDYtMjMgIEtlbm5ldGggUnVzc2VsbCAgPGtickBnb29nbGUu 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