42978 2010-07-26 10:41:18 -0700 Add a watchdog timer to WebGL to prevent bad shaders from running forever 2013-08-12 13:50:57 -0700 1 1 1 Unclassified WebKit WebGL 528+ (Nightly build) PC OS X 10.5 RESOLVED WONTFIX InRadar P2 Normal --- 64497 71392 1 cmarrin cmarrin dino enne kbr stearns tonikitoo zmo oldest_to_newest 256096 0 cmarrin 2010-07-26 10:41:18 -0700 If you create a trivially simply shader which infinite loops, it will hang Mac essentially forever. I need to experiment with the possibility of adding a watchdog timer to check for this condition and destroy the GL context when detected. This will hopefully get out of the hanging condition. 273607 1 66419 cmarrin 2010-09-02 15:19:43 -0700 Created attachment 66419 WARNING! Run this in a browser that supports WebGL and your system may hang! 277295 2 67203 cmarrin 2010-09-10 10:56:07 -0700 Created attachment 67203 Case which renders triangle over and over. Shader takes a long time, but is not infinite loop 277322 3 67207 cmarrin 2010-09-10 11:24:56 -0700 Created attachment 67207 Even longer shader. This one flickers the background so you can see each render 277498 4 67255 cmarrin 2010-09-10 16:01:58 -0700 Created attachment 67255 Infinite loop in vertex shader, repeated every 100ms. Locks up WebKit! 277565 5 67273 cmarrin 2010-09-10 17:41:51 -0700 Created attachment 67273 Infinite loop in fragment shader, repeated every 100ms, locks up WebKit! 524227 6 kbr 2011-12-19 15:28:30 -0800 I noticed that this bug was just added as a blocker for the CSS Shader umbrella bug. Note that some progress has already been made on this issue on some platforms and ports, though more work is certainly needed. See https://bugs.webkit.org/show_bug.cgi?id=64497 . 524251 7 cmarrin 2011-12-19 16:06:11 -0800 (In reply to comment #6) > I noticed that this bug was just added as a blocker for the CSS Shader umbrella bug. Note that some progress has already been made on this issue on some platforms and ports, though more work is certainly needed. See https://bugs.webkit.org/show_bug.cgi?id=64497 . I think this bug is irrelevant given our recent work with robustness and protection against runaway shaders. Our driver team doesn't think it would ever be possible to do this sort of thing in user level code. I suggest we close it as NTBF 524266 8 kbr 2011-12-19 16:18:34 -0800 (In reply to comment #7) > > I think this bug is irrelevant given our recent work with robustness and protection against runaway shaders. Our driver team doesn't think it would ever be possible to do this sort of thing in user level code. > > I suggest we close it as NTBF Sounds fine to me. Consider adding one or more of your test cases above to the denial of service samples in the public WebGL repository under sdk/tests/extra/. The infinite loop ones probably are not relevant as I believe ANGLE shouldn't allow those to compile any more. 916389 9 dino 2013-08-12 13:50:57 -0700 Covered by robustness stuff. 66419 2010-09-02 15:19:43 -0700 2010-09-02 15:21:43 -0700 WARNING! 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Shader takes a long time, but is not infinite loop shader-long-loop.html text/html 3327 cmarrin PGhlYWQ+CjxzY3JpcHQgaWQ9InZlcnRleFNoYWRlciIgdHlwZT0ieC1zaGFkZXIveC12ZXJ0ZXgi PgogIGF0dHJpYnV0ZSB2ZWM0IHZQb3NpdGlvbjsKCiAgdm9pZCBtYWluKCkgewogICAgIC8vIENv bW1lbnQgb3V0IHRoZSBsaW5lIGJlbG93IGFuZCB0aGUgc2hhZGVyIHdvcmtzIG5vcm1hbGx5Cgkg Ly8gd2hpbGUodHJ1ZSkge307CiAgICAgZ2xfUG9zaXRpb24gPSB2UG9zaXRpb247CiAgfQo8L3Nj cmlwdD4KCjxzY3JpcHQgaWQ9ImZyYWdtZW50U2hhZGVyIiB0eXBlPSJ4LXNoYWRlci94LWZyYWdt ZW50Ij4KICB2b2lkIG1haW4oKSB7CiAgICAgIGZvciAoaW50IGkgPSAwOyBpIDwgMzAwMDA7ICsr aSkgewogICAgICAgIGdsX0ZyYWdDb2xvciA9IHZlYzQoMC4wLCAxLjAsIDAuMCwgMS4wKTsgLy8g Z3JlZW4gY29sb3IKICAgICAgfQogIH0KPC9zY3JpcHQ+Cgo8c2NyaXB0IHR5cGU9InRleHQvamF2 YXNjcmlwdCI+CnZhciBnbCA9IG51bGw7IC8vIEhvbGQgV2ViR0wgY29udGV4dCBvYmplY3QKCmZ1 bmN0aW9uIGRyYXcoKSB7IC8vIERyYXcgdGhlIHBpY3R1cmUKICAgIHZhciB2ZXJ0aWNlcyA9IFsg MC4wLCAwLjUsIDAuMCwKICAgICAgICAgICAgICAgICAgICAgICAgICAgIC0wLjUsIC0wLjUsIDAu MCwKICAgICAgICAgICAgICAgICAgICAgICAgICAgIDAuNSwgLTAuNSwgMC4wIF07IAogICAgZ2wu YnVmZmVyRGF0YShnbC5BUlJBWV9CVUZGRVIsIG5ldyBGbG9hdDMyQXJyYXkodmVydGljZXMpLCBn bC5TVEFUSUNfRFJBVyk7CgogICAgZ2wudmVydGV4QXR0cmliUG9pbnRlcigwLCAzLCBnbC5GTE9B VCwgZmFsc2UsIDAsIDApOyAvLyBMb2FkIHRoZSB2ZXJ0ZXggZGF0YQogICAgZ2wuZW5hYmxlVmVy dGV4QXR0cmliQXJyYXkoMCk7IAogICAgZ2wuZHJhd0FycmF5cyhnbC5UUklBTkdMRVMsIDAsIDMp OyAKICAgIGdsLmZsdXNoKCk7Cn0KCmZ1bmN0aW9uIGVycm9yKGVycm9yTWVzc2FnZSkgewogICAg YWxlcnQoZXJyb3JNZXNzYWdlKTsgCn0KCmZ1bmN0aW9uIGdldEZyYWdtZW50U2hhZGVyKCkgewog ICAgdmFyIHNoYWRlck5vZGUgPSBkb2N1bWVudC5nZXRFbGVtZW50QnlJZCgiZnJhZ21lbnRTaGFk ZXIiKTsgLy8gZnJhZ21lbnRTaGFkZXIgaGFzIGJlZW4gZGVmaW5lZCBhdCB0aGUgdG9wCiAgICB2 YXIgc2hhZGVyU291cmNlID0gZ2V0U2hhZGVyU291cmNlKHNoYWRlck5vZGUpOwoKICAgIHZhciBz aGFkZXIgPSBnbC5jcmVhdGVTaGFkZXIoZ2wuRlJBR01FTlRfU0hBREVSKTsKICAgIGdsLnNoYWRl clNvdXJjZShzaGFkZXIsIHNoYWRlclNvdXJjZSk7CiAgICBnbC5jb21waWxlU2hhZGVyKHNoYWRl cik7CgogICAgcmV0dXJuIHNoYWRlcjsKfQoKZnVuY3Rpb24gZ2V0R2woKSB7IAogICAgdmFyIHRo ZUNhbnZhcyA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJ3ZWJHbENhbnZhcyIpOwoKICAgIGds ID0gdGhlQ2FudmFzLmdldENvbnRleHQoIm1vei13ZWJnbCIpOyAvLyBGaXJlZm94CiAgICBpZiAo IWdsKQogICAgICAgIGdsID0gdGhlQ2FudmFzLmdldENvbnRleHQoImV4cGVyaW1lbnRhbC13ZWJn bCIpOyAvLyBTYWZhcmkgb3IgQ2hyb21lCgogICAgaWYgKCFnbCkKICAgICAgICBlcnJvcigiRmFp bGVkIHRvIGdldCBXZWJHTCBjb250ZXh0LiIpOwp9CgpmdW5jdGlvbiBnZXRTaGFkZXJTb3VyY2Uo c2hhZGVyTm9kZSkgewogICAgdmFyIHNoYWRlclNvdXJjZSA9ICIiOwogICAgdmFyIG5vZGUgPSBz aGFkZXJOb2RlLmZpcnN0Q2hpbGQ7CiAgICB3aGlsZSAobm9kZSkgewogICAgICAgIGlmIChub2Rl Lm5vZGVUeXBlID09IDMpIC8vIE5vZGUuVEVYVF9OT0RFCiAgICAgICAgICAgIHNoYWRlclNvdXJj ZSArPSBub2RlLnRleHRDb250ZW50OwogICAgICAgIG5vZGUgPSBub2RlLm5leHRTaWJsaW5nOwog ICAgfQoKICAgIHJldHVybiBzaGFkZXJTb3VyY2U7Cn0KCmZ1bmN0aW9uIGdldFZlcnRleFNoYWRl cigpIHsKICAgIHZhciBzaGFkZXJOb2RlID0gZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoInZlcnRl eFNoYWRlciIpOyAvLyB2ZXJ0ZXhTaGFkZXIgaGFzIGJlZW4gZGVmaW5lZCBhdCB0aGUgdG9wCiAg ICB2YXIgc2hhZGVyU291cmNlID0gZ2V0U2hhZGVyU291cmNlKHNoYWRlck5vZGUpOwoKICAgIHZh ciBzaGFkZXIgPSBnbC5jcmVhdGVTaGFkZXIoZ2wuVkVSVEVYX1NIQURFUik7CiAgICBnbC5zaGFk ZXJTb3VyY2Uoc2hhZGVyLCBzaGFkZXJTb3VyY2UpOwogICAgZ2wuY29tcGlsZVNoYWRlcihzaGFk ZXIpOwoKICAgIHJldHVybiBzaGFkZXI7Cn0KCmZ1bmN0aW9uIGluaXRpYWxpemUoKSB7CiAgICBn ZXRHbCgpOwoKICAgIHZhciB2ZXJ0ZXhTaGFkZXIgPSBnZXRWZXJ0ZXhTaGFkZXIoKTsKICAgIHZh ciBmcmFnbWVudFNoYWRlciA9IGdldEZyYWdtZW50U2hhZGVyKCk7CgogICAgdmFyIHNoYWRlclBy b2dyYW0gPSBnbC5jcmVhdGVQcm9ncmFtKCk7CiAgICBnbC5hdHRhY2hTaGFkZXIoc2hhZGVyUHJv Z3JhbSwgdmVydGV4U2hhZGVyKTsKICAgIGdsLmF0dGFjaFNoYWRlcihzaGFkZXJQcm9ncmFtLCBm cmFnbWVudFNoYWRlcik7CiAgICBnbC5iaW5kQXR0cmliTG9jYXRpb24oc2hhZGVyUHJvZ3JhbSwg MCwgInZQb3NpdGlvbiIpOyAvLyB2UG9zaXRpb24gaGFzIGJlZW4gZGVmaW5lZCBhdCB0aGUgdG9w CiAgICBnbC5saW5rUHJvZ3JhbShzaGFkZXJQcm9ncmFtKTsKCiAgICBnbC51c2VQcm9ncmFtKHNo YWRlclByb2dyYW0pOwoKICAgIHZhciBidWZmZXIgPSBnbC5jcmVhdGVCdWZmZXIoKTsKICAgIGds LmJpbmRCdWZmZXIoZ2wuQVJSQVlfQlVGRkVSLCBidWZmZXIpOyAvLyBCaW5kIGEgYnVmZmVyIG9i amVjdC4gQWNjZXB0ZWQgdmFsdWVzIGZvciB0YXJnZXQgYXJlOiBBUlJBWV9CVUZGRVIgb3IgRUxF TUVOVF9BUlJBWV9CVUZGRVIgCgp9CgovLyBNYWluIHByb2dyYW0gc3RhcnRzIGhlcmUuIFRoZSBh Ym92ZSBmdW5jdGlvbnMgYXJlIGFscGhhYmV0aWNhbCBvcmRlcgpmdW5jdGlvbiBtYWluKCkgeyAK ICAgIGluaXRpYWxpemUoKTsKICAgIHNldEludGVydmFsKGZ1bmN0aW9uKCkgeyBkcmF3KCkgfSwg MTAwKTsKfSAvLyBtYWluCgp3aW5kb3cub25sb2FkID0gbWFpbjsgLy8gQ2FsbCB0aGUgbWFpbigp IGZ1bmN0aW9uIHdoZW4gdGhlIHdpbmRvdyBoYXMgYmVlbiBsb2FkZWQKCi8vLy8vLy8vLy8vLy8v Ly8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8v Ly8vLy8vLy8vLy8vLy8vLy8vLy8vLy8KPC9zY3JpcHQ+CjwvaGVhZD4KCjxjYW52YXMgaWQ9Indl YkdsQ2FudmFzIiBzdHlsZT0iYm9yZGVyOiAxcHggc29saWQgZ3JlZW4iIHdpZHRoPSIzMDAiIGhl aWdodD0iMzAwIj48L2NhbnZhcz4K 67207 2010-09-10 11:24:56 -0700 2010-09-10 11:24:56 -0700 Even longer shader. This one flickers the background so you can see each render shader-loop-longer-flicker.html text/html 3472 cmarrin PGhlYWQ+CjxzY3JpcHQgaWQ9InZlcnRleFNoYWRlciIgdHlwZT0ieC1zaGFkZXIveC12ZXJ0ZXgi PgogIGF0dHJpYnV0ZSB2ZWM0IHZQb3NpdGlvbjsKCiAgdm9pZCBtYWluKCkgewogICAgIC8vIENv bW1lbnQgb3V0IHRoZSBsaW5lIGJlbG93IGFuZCB0aGUgc2hhZGVyIHdvcmtzIG5vcm1hbGx5Cgkg Ly8gd2hpbGUodHJ1ZSkge307CiAgICAgZ2xfUG9zaXRpb24gPSB2UG9zaXRpb247CiAgfQo8L3Nj cmlwdD4KCjxzY3JpcHQgaWQ9ImZyYWdtZW50U2hhZGVyIiB0eXBlPSJ4LXNoYWRlci94LWZyYWdt ZW50Ij4KICB2b2lkIG1haW4oKSB7CiAgICAgIGZvciAoaW50IGkgPSAwOyBpIDwgMzAwMDA7ICsr aSkKICAgICAgICAgIGZvciAoaW50IGogPSAwOyBqIDwgNTAwOyArK2opCiAgICAgICAgICAgIGds X0ZyYWdDb2xvciA9IHZlYzQoMC4wLCAxLjAsIDAuMCwgMS4wKTsgLy8gZ3JlZW4gY29sb3IKICB9 Cjwvc2NyaXB0PgoKPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiPgp2YXIgZ2wgPSBudWxs OyAvLyBIb2xkIFdlYkdMIGNvbnRleHQgb2JqZWN0Cgpjb2xvciA9IDA7CgpmdW5jdGlvbiBkcmF3 KCkgeyAvLyBEcmF3IHRoZSBwaWN0dXJlCiAgICBjb2xvciA9IGNvbG9yID8gMCA6IDAuNTsKICAg IGdsLmNsZWFyQ29sb3IoY29sb3IsIDAsIDAsIDEpOwogICAgZ2wuY2xlYXIoZ2wuQ09MT1JfQlVG RkVSX0JJVCk7CiAgICB2YXIgdmVydGljZXMgPSBbIDAuMCwgMC41LCAwLjAsCiAgICAgICAgICAg ICAgICAgICAgICAgICAgICAtMC41LCAtMC41LCAwLjAsCiAgICAgICAgICAgICAgICAgICAgICAg ICAgICAwLjUsIC0wLjUsIDAuMCBdOyAKICAgIGdsLmJ1ZmZlckRhdGEoZ2wuQVJSQVlfQlVGRkVS LCBuZXcgRmxvYXQzMkFycmF5KHZlcnRpY2VzKSwgZ2wuU1RBVElDX0RSQVcpOwoKICAgIGdsLnZl cnRleEF0dHJpYlBvaW50ZXIoMCwgMywgZ2wuRkxPQVQsIGZhbHNlLCAwLCAwKTsgLy8gTG9hZCB0 aGUgdmVydGV4IGRhdGEKICAgIGdsLmVuYWJsZVZlcnRleEF0dHJpYkFycmF5KDApOyAKICAgIGds LmRyYXdBcnJheXMoZ2wuVFJJQU5HTEVTLCAwLCAzKTsgCiAgICBnbC5mbHVzaCgpOwp9CgpmdW5j dGlvbiBlcnJvcihlcnJvck1lc3NhZ2UpIHsKICAgIGFsZXJ0KGVycm9yTWVzc2FnZSk7IAp9Cgpm dW5jdGlvbiBnZXRGcmFnbWVudFNoYWRlcigpIHsKICAgIHZhciBzaGFkZXJOb2RlID0gZG9jdW1l bnQuZ2V0RWxlbWVudEJ5SWQoImZyYWdtZW50U2hhZGVyIik7IC8vIGZyYWdtZW50U2hhZGVyIGhh cyBiZWVuIGRlZmluZWQgYXQgdGhlIHRvcAogICAgdmFyIHNoYWRlclNvdXJjZSA9IGdldFNoYWRl clNvdXJjZShzaGFkZXJOb2RlKTsKCiAgICB2YXIgc2hhZGVyID0gZ2wuY3JlYXRlU2hhZGVyKGds LkZSQUdNRU5UX1NIQURFUik7CiAgICBnbC5zaGFkZXJTb3VyY2Uoc2hhZGVyLCBzaGFkZXJTb3Vy Y2UpOwogICAgZ2wuY29tcGlsZVNoYWRlcihzaGFkZXIpOwoKICAgIHJldHVybiBzaGFkZXI7Cn0K CmZ1bmN0aW9uIGdldEdsKCkgeyAKICAgIHZhciB0aGVDYW52YXMgPSBkb2N1bWVudC5nZXRFbGVt ZW50QnlJZCgid2ViR2xDYW52YXMiKTsKCiAgICBnbCA9IHRoZUNhbnZhcy5nZXRDb250ZXh0KCJt b3otd2ViZ2wiKTsgLy8gRmlyZWZveAogICAgaWYgKCFnbCkKICAgICAgICBnbCA9IHRoZUNhbnZh cy5nZXRDb250ZXh0KCJleHBlcmltZW50YWwtd2ViZ2wiKTsgLy8gU2FmYXJpIG9yIENocm9tZQoK ICAgIGlmICghZ2wpCiAgICAgICAgZXJyb3IoIkZhaWxlZCB0byBnZXQgV2ViR0wgY29udGV4dC4i KTsKfQoKZnVuY3Rpb24gZ2V0U2hhZGVyU291cmNlKHNoYWRlck5vZGUpIHsKICAgIHZhciBzaGFk ZXJTb3VyY2UgPSAiIjsKICAgIHZhciBub2RlID0gc2hhZGVyTm9kZS5maXJzdENoaWxkOwogICAg d2hpbGUgKG5vZGUpIHsKICAgICAgICBpZiAobm9kZS5ub2RlVHlwZSA9PSAzKSAvLyBOb2RlLlRF WFRfTk9ERQogICAgICAgICAgICBzaGFkZXJTb3VyY2UgKz0gbm9kZS50ZXh0Q29udGVudDsKICAg ICAgICBub2RlID0gbm9kZS5uZXh0U2libGluZzsKICAgIH0KCiAgICByZXR1cm4gc2hhZGVyU291 cmNlOwp9CgpmdW5jdGlvbiBnZXRWZXJ0ZXhTaGFkZXIoKSB7CiAgICB2YXIgc2hhZGVyTm9kZSA9 IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJ2ZXJ0ZXhTaGFkZXIiKTsgLy8gdmVydGV4U2hhZGVy IGhhcyBiZWVuIGRlZmluZWQgYXQgdGhlIHRvcAogICAgdmFyIHNoYWRlclNvdXJjZSA9IGdldFNo YWRlclNvdXJjZShzaGFkZXJOb2RlKTsKCiAgICB2YXIgc2hhZGVyID0gZ2wuY3JlYXRlU2hhZGVy KGdsLlZFUlRFWF9TSEFERVIpOwogICAgZ2wuc2hhZGVyU291cmNlKHNoYWRlciwgc2hhZGVyU291 cmNlKTsKICAgIGdsLmNvbXBpbGVTaGFkZXIoc2hhZGVyKTsKCiAgICByZXR1cm4gc2hhZGVyOwp9 CgpmdW5jdGlvbiBpbml0aWFsaXplKCkgewogICAgZ2V0R2woKTsKCiAgICB2YXIgdmVydGV4U2hh ZGVyID0gZ2V0VmVydGV4U2hhZGVyKCk7CiAgICB2YXIgZnJhZ21lbnRTaGFkZXIgPSBnZXRGcmFn bWVudFNoYWRlcigpOwoKICAgIHZhciBzaGFkZXJQcm9ncmFtID0gZ2wuY3JlYXRlUHJvZ3JhbSgp OwogICAgZ2wuYXR0YWNoU2hhZGVyKHNoYWRlclByb2dyYW0sIHZlcnRleFNoYWRlcik7CiAgICBn bC5hdHRhY2hTaGFkZXIoc2hhZGVyUHJvZ3JhbSwgZnJhZ21lbnRTaGFkZXIpOwogICAgZ2wuYmlu ZEF0dHJpYkxvY2F0aW9uKHNoYWRlclByb2dyYW0sIDAsICJ2UG9zaXRpb24iKTsgLy8gdlBvc2l0 aW9uIGhhcyBiZWVuIGRlZmluZWQgYXQgdGhlIHRvcAogICAgZ2wubGlua1Byb2dyYW0oc2hhZGVy UHJvZ3JhbSk7CgogICAgZ2wudXNlUHJvZ3JhbShzaGFkZXJQcm9ncmFtKTsKCiAgICB2YXIgYnVm ZmVyID0gZ2wuY3JlYXRlQnVmZmVyKCk7CiAgICBnbC5iaW5kQnVmZmVyKGdsLkFSUkFZX0JVRkZF UiwgYnVmZmVyKTsgLy8gQmluZCBhIGJ1ZmZlciBvYmplY3QuIEFjY2VwdGVkIHZhbHVlcyBmb3Ig dGFyZ2V0IGFyZTogQVJSQVlfQlVGRkVSIG9yIEVMRU1FTlRfQVJSQVlfQlVGRkVSIAoKfQoKLy8g TWFpbiBwcm9ncmFtIHN0YXJ0cyBoZXJlLiBUaGUgYWJvdmUgZnVuY3Rpb25zIGFyZSBhbHBoYWJl dGljYWwgb3JkZXIKZnVuY3Rpb24gbWFpbigpIHsgCiAgICBpbml0aWFsaXplKCk7CiAgICBzZXRJ bnRlcnZhbChmdW5jdGlvbigpIHsgZHJhdygpIH0sIDEwMCk7Cn0gLy8gbWFpbgoKd2luZG93Lm9u bG9hZCA9IG1haW47IC8vIENhbGwgdGhlIG1haW4oKSBmdW5jdGlvbiB3aGVuIHRoZSB3aW5kb3cg aGFzIGJlZW4gbG9hZGVkCgovLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8v Ly8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vCjwv c2NyaXB0Pgo8L2hlYWQ+Cgo8Y2FudmFzIGlkPSJ3ZWJHbENhbnZhcyIgc3R5bGU9ImJvcmRlcjog MXB4IHNvbGlkIGdyZWVuIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjMwMCI+PC9jYW52YXM+Cg== 67255 2010-09-10 16:01:58 -0700 2010-09-10 16:01:58 -0700 Infinite loop in vertex shader, repeated every 100ms. Locks up WebKit! shader-freeze-lockup.html text/html 3400 cmarrin PGhlYWQ+CjxzY3JpcHQgaWQ9InZlcnRleFNoYWRlciIgdHlwZT0ieC1zaGFkZXIveC12ZXJ0ZXgi PgogIGF0dHJpYnV0ZSB2ZWM0IHZQb3NpdGlvbjsKCiAgdm9pZCBtYWluKCkgewogICAgIC8vIENv bW1lbnQgb3V0IHRoZSBsaW5lIGJlbG93IGFuZCB0aGUgc2hhZGVyIHdvcmtzIG5vcm1hbGx5Cgkg d2hpbGUodHJ1ZSkge307CiAgICAgZ2xfUG9zaXRpb24gPSB2UG9zaXRpb247CiAgfQo8L3Njcmlw dD4KCjxzY3JpcHQgaWQ9ImZyYWdtZW50U2hhZGVyIiB0eXBlPSJ4LXNoYWRlci94LWZyYWdtZW50 Ij4KICB2b2lkIG1haW4oKSB7CiAgICAgIGdsX0ZyYWdDb2xvciA9IHZlYzQoMC4wLCAxLjAsIDAu MCwgMS4wKTsgLy8gZ3JlZW4gY29sb3IKICB9Cjwvc2NyaXB0PgoKPHNjcmlwdCB0eXBlPSJ0ZXh0 L2phdmFzY3JpcHQiPgp2YXIgZ2wgPSBudWxsOyAvLyBIb2xkIFdlYkdMIGNvbnRleHQgb2JqZWN0 Cgpjb2xvciA9IDA7CgpmdW5jdGlvbiBkcmF3KCkgeyAvLyBEcmF3IHRoZSBwaWN0dXJlCiAgICBj b2xvciA9IGNvbG9yID8gMCA6IDAuNTsKICAgIGdsLmNsZWFyQ29sb3IoY29sb3IsIDAsIDAsIDEp OwogICAgZ2wuY2xlYXIoZ2wuQ09MT1JfQlVGRkVSX0JJVCk7CiAgICB2YXIgdmVydGljZXMgPSBb IDAuMCwgMC41LCAwLjAsCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAtMC41LCAtMC41LCAw LjAsCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAwLjUsIC0wLjUsIDAuMCBdOyAKICAgIGds LmJ1ZmZlckRhdGEoZ2wuQVJSQVlfQlVGRkVSLCBuZXcgRmxvYXQzMkFycmF5KHZlcnRpY2VzKSwg Z2wuU1RBVElDX0RSQVcpOwoKICAgIGdsLnZlcnRleEF0dHJpYlBvaW50ZXIoMCwgMywgZ2wuRkxP QVQsIGZhbHNlLCAwLCAwKTsgLy8gTG9hZCB0aGUgdmVydGV4IGRhdGEKICAgIGdsLmVuYWJsZVZl cnRleEF0dHJpYkFycmF5KDApOyAKICAgIGdsLmRyYXdBcnJheXMoZ2wuVFJJQU5HTEVTLCAwLCAz KTsgCiAgICBnbC5mbHVzaCgpOwp9CgpmdW5jdGlvbiBlcnJvcihlcnJvck1lc3NhZ2UpIHsKICAg IGFsZXJ0KGVycm9yTWVzc2FnZSk7IAp9CgpmdW5jdGlvbiBnZXRGcmFnbWVudFNoYWRlcigpIHsK ICAgIHZhciBzaGFkZXJOb2RlID0gZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoImZyYWdtZW50U2hh ZGVyIik7IC8vIGZyYWdtZW50U2hhZGVyIGhhcyBiZWVuIGRlZmluZWQgYXQgdGhlIHRvcAogICAg dmFyIHNoYWRlclNvdXJjZSA9IGdldFNoYWRlclNvdXJjZShzaGFkZXJOb2RlKTsKCiAgICB2YXIg c2hhZGVyID0gZ2wuY3JlYXRlU2hhZGVyKGdsLkZSQUdNRU5UX1NIQURFUik7CiAgICBnbC5zaGFk ZXJTb3VyY2Uoc2hhZGVyLCBzaGFkZXJTb3VyY2UpOwogICAgZ2wuY29tcGlsZVNoYWRlcihzaGFk ZXIpOwoKICAgIHJldHVybiBzaGFkZXI7Cn0KCmZ1bmN0aW9uIGdldEdsKCkgeyAKICAgIHZhciB0 aGVDYW52YXMgPSBkb2N1bWVudC5nZXRFbGVtZW50QnlJZCgid2ViR2xDYW52YXMiKTsKCiAgICBn bCA9IHRoZUNhbnZhcy5nZXRDb250ZXh0KCJtb3otd2ViZ2wiKTsgLy8gRmlyZWZveAogICAgaWYg KCFnbCkKICAgICAgICBnbCA9IHRoZUNhbnZhcy5nZXRDb250ZXh0KCJleHBlcmltZW50YWwtd2Vi Z2wiKTsgLy8gU2FmYXJpIG9yIENocm9tZQoKICAgIGlmICghZ2wpCiAgICAgICAgZXJyb3IoIkZh aWxlZCB0byBnZXQgV2ViR0wgY29udGV4dC4iKTsKfQoKZnVuY3Rpb24gZ2V0U2hhZGVyU291cmNl KHNoYWRlck5vZGUpIHsKICAgIHZhciBzaGFkZXJTb3VyY2UgPSAiIjsKICAgIHZhciBub2RlID0g c2hhZGVyTm9kZS5maXJzdENoaWxkOwogICAgd2hpbGUgKG5vZGUpIHsKICAgICAgICBpZiAobm9k ZS5ub2RlVHlwZSA9PSAzKSAvLyBOb2RlLlRFWFRfTk9ERQogICAgICAgICAgICBzaGFkZXJTb3Vy Y2UgKz0gbm9kZS50ZXh0Q29udGVudDsKICAgICAgICBub2RlID0gbm9kZS5uZXh0U2libGluZzsK ICAgIH0KCiAgICByZXR1cm4gc2hhZGVyU291cmNlOwp9CgpmdW5jdGlvbiBnZXRWZXJ0ZXhTaGFk ZXIoKSB7CiAgICB2YXIgc2hhZGVyTm9kZSA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJ2ZXJ0 ZXhTaGFkZXIiKTsgLy8gdmVydGV4U2hhZGVyIGhhcyBiZWVuIGRlZmluZWQgYXQgdGhlIHRvcAog ICAgdmFyIHNoYWRlclNvdXJjZSA9IGdldFNoYWRlclNvdXJjZShzaGFkZXJOb2RlKTsKCiAgICB2 YXIgc2hhZGVyID0gZ2wuY3JlYXRlU2hhZGVyKGdsLlZFUlRFWF9TSEFERVIpOwogICAgZ2wuc2hh ZGVyU291cmNlKHNoYWRlciwgc2hhZGVyU291cmNlKTsKICAgIGdsLmNvbXBpbGVTaGFkZXIoc2hh ZGVyKTsKCiAgICByZXR1cm4gc2hhZGVyOwp9CgpmdW5jdGlvbiBpbml0aWFsaXplKCkgewogICAg Z2V0R2woKTsKCiAgICB2YXIgdmVydGV4U2hhZGVyID0gZ2V0VmVydGV4U2hhZGVyKCk7CiAgICB2 YXIgZnJhZ21lbnRTaGFkZXIgPSBnZXRGcmFnbWVudFNoYWRlcigpOwoKICAgIHZhciBzaGFkZXJQ cm9ncmFtID0gZ2wuY3JlYXRlUHJvZ3JhbSgpOwogICAgZ2wuYXR0YWNoU2hhZGVyKHNoYWRlclBy b2dyYW0sIHZlcnRleFNoYWRlcik7CiAgICBnbC5hdHRhY2hTaGFkZXIoc2hhZGVyUHJvZ3JhbSwg ZnJhZ21lbnRTaGFkZXIpOwogICAgZ2wuYmluZEF0dHJpYkxvY2F0aW9uKHNoYWRlclByb2dyYW0s IDAsICJ2UG9zaXRpb24iKTsgLy8gdlBvc2l0aW9uIGhhcyBiZWVuIGRlZmluZWQgYXQgdGhlIHRv cAogICAgZ2wubGlua1Byb2dyYW0oc2hhZGVyUHJvZ3JhbSk7CgogICAgZ2wudXNlUHJvZ3JhbShz aGFkZXJQcm9ncmFtKTsKCiAgICAgdmFyIGJ1ZmZlciA9IGdsLmNyZWF0ZUJ1ZmZlcigpOwogICAg Z2wuYmluZEJ1ZmZlcihnbC5BUlJBWV9CVUZGRVIsIGJ1ZmZlcik7IC8vIEJpbmQgYSBidWZmZXIg b2JqZWN0LiBBY2NlcHRlZCB2YWx1ZXMgZm9yIHRhcmdldCBhcmU6IEFSUkFZX0JVRkZFUiBvciBF TEVNRU5UX0FSUkFZX0JVRkZFUiAKCn0KCi8vIE1haW4gcHJvZ3JhbSBzdGFydHMgaGVyZS4gVGhl IGFib3ZlIGZ1bmN0aW9ucyBhcmUgYWxwaGFiZXRpY2FsIG9yZGVyCmZ1bmN0aW9uIG1haW4oKSB7 IAogICAgaW5pdGlhbGl6ZSgpOwogICAgc2V0SW50ZXJ2YWwoZnVuY3Rpb24oKSB7IGRyYXcoKSB9 LCAxMDApOwogICAgLy9kcmF3KCk7Cn0gLy8gbWFpbgoKd2luZG93Lm9ubG9hZCA9IG1haW47IC8v IENhbGwgdGhlIG1haW4oKSBmdW5jdGlvbiB3aGVuIHRoZSB3aW5kb3cgaGFzIGJlZW4gbG9hZGVk CgovLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8v Ly8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vCjwvc2NyaXB0Pgo8L2hlYWQ+ Cgo8Y2FudmFzIGlkPSJ3ZWJHbENhbnZhcyIgc3R5bGU9ImJvcmRlcjogMXB4IHNvbGlkIGdyZWVu IiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjMwMCI+PC9jYW52YXM+Cg== 67273 2010-09-10 17:41:51 -0700 2010-09-10 17:41:51 -0700 Infinite loop in fragment shader, repeated every 100ms, locks up WebKit! 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