111012 2013-02-27 14:36:00 -0800 Refactor validation checks for texture uploads 2013-03-27 18:33:23 -0700 1 1 1 Unclassified WebKit WebGL 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 110931 1 kbr jun.a.jiang bajones buildbot cmarrin dglazkov dino esprehn+autocc gman jfeldstein jun.a.jiang nayankk ojan.autocc peter+ews rniwa tonikitoo webkit-ews webkit.review.bot zmo oldest_to_newest 843515 0 kbr 2013-02-27 14:36:00 -0800 Currently the validation checks performed during texture uploads in WebGL are scattered in many different places in the call stack. The majority of the checks occur in texImage2DBase and texSubImage2DBase, but some of the entry points which call these methods need to pack incoming data into a specified format. Therefore the format and type combination have to be verified as valid beforehand, leading to redundant checks in certain situations. All of the necessary validation code should be refactored and called from the user-facing entry points before calling down further, and in particular, before calling any of the texture data conversion code. Then the checks performed in texImage2DBase and texSubImage2DBase will be unnecessary and can be turned into assertions. 854381 1 192942 jun.a.jiang 2013-03-13 10:12:34 -0700 Created attachment 192942 Patch 854386 2 jun.a.jiang 2013-03-13 10:20:16 -0700 As Kenneth suggested, move all the validation checks to the entry level and turn the check at bottom(tex{Sub}Image2DBase) into assertions. 854387 3 192942 webkit-ews 2013-03-13 10:22:27 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass qt-ews (qt): Output: http://webkit-commit-queue.appspot.com/results/17136221 854388 4 192942 webkit-ews 2013-03-13 10:24:15 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass qt-wk2-ews (qt): Output: http://webkit-commit-queue.appspot.com/results/17175088 854391 5 192942 webkit.review.bot 2013-03-13 10:32:41 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass chromium-ews (chromium-xvfb): Output: http://webkit-commit-queue.appspot.com/results/17203040 854392 6 192942 eflews.bot 2013-03-13 10:35:36 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass efl-ews (efl): Output: http://webkit-commit-queue.appspot.com/results/17036757 854396 7 192942 buildbot 2013-03-13 10:40:52 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass mac-ews (mac): Output: http://webkit-commit-queue.appspot.com/results/17207116 854398 8 192942 peter+ews 2013-03-13 10:45:43 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass cr-android-ews (chromium-android): Output: http://webkit-commit-queue.appspot.com/results/17169478 854415 9 192942 buildbot 2013-03-13 11:13:25 -0700 Comment on attachment 192942 Patch Attachment 192942 did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-commit-queue.appspot.com/results/17126354 854420 10 192942 kbr 2013-03-13 11:16:39 -0700 Comment on attachment 192942 Patch Before this is reviewed in detail could you please rebase it on to top of tree and upload another version? Thanks. 854984 11 193069 jun.a.jiang 2013-03-13 23:17:46 -0700 Created attachment 193069 Patch 854987 12 jun.a.jiang 2013-03-13 23:22:07 -0700 Fixed the issue that some variables were only used in Debug build and resulted in "unused variable" error for Release build. 862005 13 193069 kbr 2013-03-22 17:16:51 -0700 Comment on attachment 193069 Patch Thanks for doing this refactoring. It looks great. bajones, zmo, could you both please take a look at this and see if it looks correct to you? i.e., all the same checks are being done, and none were lost? What tests were run? Have you done a complete WebGL conformance test run? Mozilla's performance tests? Others? 862682 14 jun.a.jiang 2013-03-25 06:04:00 -0700 Hi, Kenneth. Thanks for your comments. I had tested it on WebKit Layout tests, WebGL conformance test and Mozilla's performance tests. If any other tests are needed but missing, I am glad to have a try. 862873 15 bajones 2013-03-25 10:06:12 -0700 (In reply to comment #13) > (From update of attachment 193069 [details]) > Thanks for doing this refactoring. It looks great. bajones, zmo, could you both please take a look at this and see if it looks correct to you? i.e., all the same checks are being done, and none were lost? It looks to me like all the checks are still in place. Thanks for the refactor, the new code certainly feels cleaner! 862889 16 193069 zmo 2013-03-25 10:28:28 -0700 Comment on attachment 193069 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=193069&action=review > Source/WebCore/html/canvas/WebGLRenderingContext.cpp:3699 > + ASSERT(isGLES2NPOTStrict() || !level || !WebGLTexture::isNPOT(width, height)); You don't neeed isGLES2NPOTStrict() here as it is ASSERT. > Source/WebCore/html/canvas/WebGLRenderingContext.cpp:3786 > + if (xoffset + width > texture->getWidth(target, level) || yoffset + height > texture->getHeight(target, level)) { Probably another CL since the code is just copied over, but it seems to me that we need to check for overflow with xoffset + width and yoffset + height. Here and a few other places. 862890 17 zmo 2013-03-25 10:28:53 -0700 Looks good to me otherwise. Thanks for the refactoring. 863432 18 193069 jun.a.jiang 2013-03-26 01:01:44 -0700 Comment on attachment 193069 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=193069&action=review >> Source/WebCore/html/canvas/WebGLRenderingContext.cpp:3699 >> + ASSERT(isGLES2NPOTStrict() || !level || !WebGLTexture::isNPOT(width, height)); > > You don't neeed isGLES2NPOTStrict() here as it is ASSERT. Hi, Zhenyao. I was not quite sure if I had caught your idea right. The ASSERT() is much like ASSERT(! (!isGLES2NPOTStrict() && level && WebGLTexture::isNPOT(width, height)) ) here. And isGLES2NPOTStrict() only returns false when extensions "GL_OES_texture_npot" or "GL_ARB_texture_non_power_of_two" is enabled. It doesn't return false constantly. In fact, when I saw the condition statement (if(!isGLES2NPOTStrict())) to determine if to do validation on level and POT status of width and height, I felt the condition statement should be removed. It seems level, width & height won't be validated when isGLES2NPOTStrict() returns true. >> Source/WebCore/html/canvas/WebGLRenderingContext.cpp:3786 >> + if (xoffset + width > texture->getWidth(target, level) || yoffset + height > texture->getHeight(target, level)) { > > Probably another CL since the code is just copied over, but it seems to me that we need to check for overflow with xoffset + width and yoffset + height. > > Here and a few other places. Thanks for your comments. It was a nice hit on the potential overflow issue. Adding the overflow checking can catch the error in an early stage and I will add it soon. 863733 19 193069 zmo 2013-03-26 09:36:47 -0700 Comment on attachment 193069 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=193069&action=review >>> Source/WebCore/html/canvas/WebGLRenderingContext.cpp:3699 >>> + ASSERT(isGLES2NPOTStrict() || !level || !WebGLTexture::isNPOT(width, height)); >> >> You don't neeed isGLES2NPOTStrict() here as it is ASSERT. > > Hi, Zhenyao. I was not quite sure if I had caught your idea right. The ASSERT() is much like ASSERT(! (!isGLES2NPOTStrict() && level && WebGLTexture::isNPOT(width, height)) ) here. And isGLES2NPOTStrict() only returns false when extensions "GL_OES_texture_npot" or "GL_ARB_texture_non_power_of_two" is enabled. It doesn't return false constantly. > In fact, when I saw the condition statement (if(!isGLES2NPOTStrict())) to determine if to do validation on level and POT status of width and height, I felt the condition statement should be removed. It seems level, width & height won't be validated when isGLES2NPOTStrict() returns true. We check isGLES2NPOTStrict() only to avoid double effort, it basically checked whether the underlying implementation also does the same NPOT check. It's no big deal, you can leave it here, but removing it in ASSERT makes the code cleaner. 864238 20 195225 jun.a.jiang 2013-03-26 22:53:25 -0700 Created attachment 195225 Patch 864258 21 jun.a.jiang 2013-03-26 23:55:58 -0700 Thanks for Zhenyao's comments. Uploaded a new patch that removed isGLES2NPOTStrict() in the ASSERT and added overflow check with xoffset + width and yoffset + height. 864629 22 zmo 2013-03-27 09:42:03 -0700 (In reply to comment #21) > Thanks for Zhenyao's comments. Uploaded a new patch that removed isGLES2NPOTStrict() in the ASSERT and added overflow check with xoffset + width and yoffset + height. Thanks. The patch looks good. (Usually we use CheckedInt class from mozilla for overflow check. But your code is OK too.) 864772 23 195225 kbr 2013-03-27 12:27:06 -0700 Comment on attachment 195225 Patch Nice work. Let's wait for this to clear the mac-ews bot before cq+'ing. 864773 24 kbr 2013-03-27 12:27:37 -0700 zmo, bajones: thanks for the informal reviews. 865060 25 195225 kbr 2013-03-27 18:00:02 -0700 Comment on attachment 195225 Patch It doesn't look like the mac-ews bot is making progress, and the test failures it reported previously don't look related to this patch. This refactoring is important, so marking cq+. 865083 26 195225 webkit.review.bot 2013-03-27 18:33:18 -0700 Comment on attachment 195225 Patch Clearing flags on attachment: 195225 Committed r147042: <http://trac.webkit.org/changeset/147042> 865084 27 webkit.review.bot 2013-03-27 18:33:23 -0700 All reviewed patches have been landed. Closing bug. 192942 2013-03-13 10:12:34 -0700 2013-03-13 23:17:37 -0700 Patch bug-111012-20130314010831.patch text/plain 27310 jun.a.jiang U3VidmVyc2lvbiBSZXZpc2lvbjogMTQ1NzI0CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNGEyOWY5OTYyYWRhZjU4 NzdkZDQ5ZDhiYzdiMGIxMDExODU3MWYwOC4uMGFiMjA2ZGY5MDU3MTY5MjZlOWI0ZmI3NTA1ZjRi M2QyZjdjYTM2NyAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDI5IEBACisyMDEzLTAzLTEzICBKdW4g SmlhbmcgIDxqdW4uYS5qaWFuZ0BpbnRlbC5jb20+CisKKyAgICAgICAgUmVmYWN0b3IgdmFsaWRh dGlvbiBjaGVja3MgZm9yIHRleHR1cmUgdXBsb2FkcworICAgICAgICBodHRwczovL2J1Z3Mud2Vi a2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTExMDEyCisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9C T0RZIChPT1BTISkuCisKKyAgICAgICAgTW92ZSB0aGUgdmFsaWRhdGlvbiBjaGVja3MgdG8gdGhl IGVudHJ5IGxldmVsIG9mIHRleHtTdWJ9SW1hZ2UyRCBhbmQgYXZvaWQgZHVwbGljYXRlZCBjaGVj a3MuIE1vcmVvdmVyLAorICAgICAgICB0dXJuIGFsbCB0aGUgdmFsaWRhdGlvbiBjaGVja3MgYXQg 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