Improve context loss error handling
This patch implements interaction with KHR_robustness. It's especially
concerned with handling CONTEXT_LOST_KHR errors: as soon as one is
encountered, the normal context loss handling code is triggered, with
the addition that context guilt information is queried from GL. The patch
fixes asserts caused by CONTEXT_LOST_KHR errors in debug mode, which
should help with further development, and hides CONTEXT_LOST_KHR errors
from command buffer clients which are not supposed to see them.
For plumbing, bindings are added for the KHR_robustness API entry points,
and command buffer autogenerated files are updated so that
GLES2Util::GetStringEnum works with CONTEXT_LOST_KHR.
Redundant LoseContext call that was called on the context after
LoseContext was already called on the whole context group is removed from
GLES2CommandDecoderImpl::OnOutOfMemoryError. The behavior that the guilty
context is unknown when an out of memory error is generated is kept, as
it does not make sense to point the finger at a specific context on an
when it is not known which context was actually consuming the most
memory.
BUG=428332
Review URL: https://codereview.chromium.org/689633003
Cr-Commit-Position: refs/heads/master@{#302249}
diff --git a/ui/gl/gl_bindings.h b/ui/gl/gl_bindings.h
index aef80f07..dd737f41 100644
--- a/ui/gl/gl_bindings.h
+++ b/ui/gl/gl_bindings.h
@@ -256,6 +256,18 @@
#define GL_GPU_DISJOINT_EXT 0x8FBB
#endif
+#ifndef GL_KHR_robustness
+#define GL_KHR_robustness 1
+#define GL_CONTEXT_ROBUST_ACCESS_KHR 0x90F3
+#define GL_LOSE_CONTEXT_ON_RESET_KHR 0x8252
+#define GL_GUILTY_CONTEXT_RESET_KHR 0x8253
+#define GL_INNOCENT_CONTEXT_RESET_KHR 0x8254
+#define GL_UNKNOWN_CONTEXT_RESET_KHR 0x8255
+#define GL_RESET_NOTIFICATION_STRATEGY_KHR 0x8256
+#define GL_NO_RESET_NOTIFICATION_KHR 0x8261
+#define GL_CONTEXT_LOST_KHR 0x0507
+#endif /* GL_KHR_robustness */
+
#define GL_GLEXT_PROTOTYPES 1
#if defined(OS_WIN)
