From 69e93699bf7327e7e4a4b17c41282e799af86092 Mon Sep 17 00:00:00 2001
From: Forrest <forrest.li@kitware.com>
Date: Fri, 24 Nov 2023 12:00:51 -0500
Subject: [PATCH 1/2] fix(useWebGLWatchdog): just report message

The WebGL event is not an exception, just an event object.
---
 src/composables/useWebGLWatchdog.ts | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/composables/useWebGLWatchdog.ts b/src/composables/useWebGLWatchdog.ts
index 26016f938..3025ee80b 100644
--- a/src/composables/useWebGLWatchdog.ts
+++ b/src/composables/useWebGLWatchdog.ts
@@ -1,4 +1,4 @@
-import { captureException, captureMessage } from '@sentry/vue';
+import { captureMessage } from '@sentry/vue';
 import vtkViewProxy from '@kitware/vtk.js/Proxy/Core/ViewProxy';
 import { useEventListener, useThrottleFn } from '@vueuse/core';
 import { Messages } from '../constants';
@@ -8,15 +8,11 @@ import { onProxyManagerEvent, ProxyManagerEvent } from './onProxyManagerEvent';
 export function useWebGLWatchdog() {
   const watchdogs = new Map<string, () => void>();
 
-  const reportError = useThrottleFn((event) => {
+  const reportError = useThrottleFn(() => {
     const messageStore = useMessageStore();
     messageStore.addError(Messages.WebGLLost.title, Messages.WebGLLost.details);
-    if (event) {
-      captureException(event);
-    } else {
-      captureMessage('WebGL2 context was lost');
-    }
-  }, 100);
+    captureMessage('WebGL2 context was lost');
+  }, 150);
 
   onProxyManagerEvent(ProxyManagerEvent.ProxyCreated, (id, obj) => {
     if (!obj || !obj.isA('vtkViewProxy')) return;

From 426b69f8c897c6d4d3a243d9455a27224d6a983f Mon Sep 17 00:00:00 2001
From: Forrest <forrest.li@kitware.com>
Date: Fri, 24 Nov 2023 13:24:26 -0500
Subject: [PATCH 2/2] feat(useWebGLWatchdog): attach volume mapper stats

---
 src/composables/useWebGLWatchdog.ts | 38 ++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/src/composables/useWebGLWatchdog.ts b/src/composables/useWebGLWatchdog.ts
index 3025ee80b..e7c07eed8 100644
--- a/src/composables/useWebGLWatchdog.ts
+++ b/src/composables/useWebGLWatchdog.ts
@@ -1,17 +1,53 @@
 import { captureMessage } from '@sentry/vue';
 import vtkViewProxy from '@kitware/vtk.js/Proxy/Core/ViewProxy';
+import vtkProxyManager from '@kitware/vtk.js/Proxy/Core/ProxyManager';
 import { useEventListener, useThrottleFn } from '@vueuse/core';
+import { Maybe } from '@/src/types';
+import { useProxyManager } from '@/src/composables/proxyManager';
 import { Messages } from '../constants';
 import { useMessageStore } from '../store/messages';
 import { onProxyManagerEvent, ProxyManagerEvent } from './onProxyManagerEvent';
 
+/**
+ * Collects relevant context for debugging 3D crashes.
+ * @returns
+ */
+function getVolumeMapperContext(pxm: Maybe<vtkProxyManager>) {
+  if (!pxm) return null;
+
+  const view3d = pxm.getViews().find((view) => view.isA('vtkLPSView3DProxy'));
+  if (!view3d) return null;
+
+  const ren = view3d.getRenderer();
+  const vol = ren.getVolumes()[0];
+  if (!vol) return null;
+
+  const mapper = vol.getMapper();
+  if (!mapper) return null;
+
+  return mapper.get(
+    'computeNormalFromOpacity',
+    'autoAdjustSampleDistances',
+    'maximumSamplesPerRay',
+    'sampleDistance',
+    'volumetricScatteringBlending'
+  );
+}
+
 export function useWebGLWatchdog() {
   const watchdogs = new Map<string, () => void>();
+  const pxm = useProxyManager();
 
   const reportError = useThrottleFn(() => {
     const messageStore = useMessageStore();
     messageStore.addError(Messages.WebGLLost.title, Messages.WebGLLost.details);
-    captureMessage('WebGL2 context was lost');
+    captureMessage('WebGL2 context was lost', {
+      contexts: {
+        vtk: {
+          volumeMapper: getVolumeMapperContext(pxm),
+        },
+      },
+    });
   }, 150);
 
   onProxyManagerEvent(ProxyManagerEvent.ProxyCreated, (id, obj) => {