237891 2022-03-15 07:02:30 -0700 RemoteGraphicsContextGLProxy omits context lost checks for back and front buffer access functions 2022-03-15 14:31:18 -0700 1 1 1 Unclassified WebKit WebGL Other Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=237893 InRadar P2 Normal --- 1 kkinnunen kkinnunen dino kbr kkinnunen mmaxfield webkit-bug-importer oldest_to_newest 1851276 0 kkinnunen 2022-03-15 07:02:30 -0700 RemoteGraphicsContextGLProxy omits context lost checks for back and front buffer access functions 1851278 1 kkinnunen 2022-03-15 07:03:09 -0700 <rdar://90245766> 1851283 2 454704 kkinnunen 2022-03-15 07:19:10 -0700 Created attachment 454704 Patch 1851335 3 454704 mmaxfield 2022-03-15 09:34:09 -0700 Comment on attachment 454704 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=454704&action=review > Source/WebKit/WebProcess/GPU/graphics/RemoteGraphicsContextGLProxy.cpp:142 > + buffer.context().clearRect({ IntPoint(), buffer.backendSize() }); I’m a little confused. If the context is lost, how can you use the context to clearRect()? 1851422 4 454739 kkinnunen 2022-03-15 12:03:08 -0700 Created attachment 454739 Patch 1851423 5 kkinnunen 2022-03-15 12:08:23 -0700 (In reply to Myles C. Maxfield from comment #3) > > > Source/WebKit/WebProcess/GPU/graphics/RemoteGraphicsContextGLProxy.cpp:142 > > + buffer.context().clearRect({ IntPoint(), buffer.backendSize() }); > > I’m a little confused. If the context is lost, how can you use the context > to clearRect()? It's different context (graphics context of the image buffer, vs graphicscontextgl of webgl) However, that's a good point -- if the context is lost, the GPU Process is unreliable and will be shut down, so the image buffer drawing does not make sense either. I'll remove this for now. 1851503 6 ews-feeder 2022-03-15 14:31:15 -0700 Committed r291314 (248453@main): <https://commits.webkit.org/248453@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 454739. 454704 2022-03-15 07:19:10 -0700 2022-03-15 12:03:02 -0700 Patch bug-237891-20220315161908.patch text/plain 3731 kkinnunen U3VidmVyc2lvbiBSZXZpc2lvbjogMjkxMjcwCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViS2l0L0No YW5nZUxvZyBiL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCmluZGV4IDE3ZGZmM2JkMDAyODI2NTQ4 MmQyZjQ3NzIzNGJjZjc4OTFhZjJjZDYuLjg0NzhmZWNlNmEzNWI1N2Y1NTM3OTg2NmY3Mzc1MDc3 ZDMxYTVkZmUgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJLaXQvQ2hhbmdlTG9nCisrKyBiL1NvdXJj ZS9XZWJLaXQvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMzMgQEAKKzIwMjItMDMtMTUgIEtpbW1vIEtp bm51bmVuICA8a2tpbm51bmVuQGFwcGxlLmNvbT4KKworICAgICAgICBSZW1vdGVHcmFwaGljc0Nv bnRleHRHTFByb3h5IG9taXRzIGNvbnRleHQgbG9zdCBjaGVja3MgZm9yIGJhY2sgYW5kIGZyb250 IGJ1ZmZlciBhY2Nlc3MgZnVuY3Rpb25zCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3Jn L3Nob3dfYnVnLmNnaT9pZD0yMzc4OTEKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9P UFMhKS4KKworICAgICAgICBBZGQgbWlzc2luZyBpc0NvbnRleHRMb3N0KCkgY2hlY2tzIHRvIFJl 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