Testing using deleted buffers referenced by VAOs PASS should be 255,0,0,255 PASS should be 0,255,0,255 FAIL at (0, 0) expected: 0,0,255,255 was 0,255,0,255 PASS should be 0,255,255,255 Testing that buffer bindings on VAOs don't affect default VAO ARRAY_BUFFER binding. FAIL at (0, 0) expected: 255,0,0,255 was 0,255,255,255 FAIL at (0, 0) expected: 0,255,0,255 was 0,255,255,255 FAIL getError expected: NO_ERROR. Was INVALID_OPERATION : there should be no errors

Quote from OpenGL ES spec 3.0.4 page 315 "When a buffer, texture, or renderbuffer object is deleted, it is unbound from any bind points it is bound to in the current context, as described for DeleteBuffers, DeleteTextures, and DeleteRenderbuffers. Bind points in other contexts are not affected. Attachments to unbound container objects, such as deletion of a buffer attached to a vertex array object which is not bound to the context, are not affected and continue to act as references on the deleted object, as described in the following section." So we should not clear the reference here.

(In reply to Morris Tseng [:mtseng] from comment #1) > Created attachment 8740816 [details] [diff] [review] > Don't reset the buffer reference of vao when deleting buffer. > > Quote from OpenGL ES spec 3.0.4 page 315 > "When a buffer, texture, or renderbuffer object is deleted, it is unbound > from any > bind points it is bound to in the current context, as described for > DeleteBuffers, > DeleteTextures, and DeleteRenderbuffers. Bind points in other contexts are > not > affected. Attachments to unbound container objects, such as deletion of a > buffer > attached to a vertex array object which is not bound to the context, are not > affected > and continue to act as references on the deleted object, as described in the > following > section." > > So we should not clear the reference here. We *should not* clear references for any *unbound* vertex array object. We *should* clear the references for the *bound* vertex array object only. Otherwise this: "Attachments to unbound container objects, such as deletion of a buffer attached to a vertex array object which is not bound to the context, are not affected" Should be just: "Attachments to container objects, such as deletion of a buffer attached to a vertex array object, are not affected" It would not surprise me if the test was wrong here.

Ah, thanks for clarification. I think there is a bug in test. I'll upload a pr to upstream.

PR is here: https://github.com/KhronosGroup/WebGL/pull/1608

https://github.com/KhronosGroup/WebGL/commit/3be09cca48233d4a1f2a84bdca46bacd0fb2676b Fix by upstream.