backend: Propagate backend thread exceptions to the main thread. (#9903)

* Filament Error Handling Remediation and noexcept Cleanup

- Replaced assert_invariant with FILAMENT_CHECK_PRECONDITION in
  Renderer::beginFrame for caller bugs.
- Removed noexcept from Camera::setCustomProjection to allow precondition
  checks to throw.
- Removed noexcept from Texture and InstanceBuffer methods using precondition
  checks.
- Documented silent clamping in View::setBloomOptions.
- Clarified comment in FrameGraphResources regarding preconditions.
- Refined MaterialInstance::commit to split texture loop into check and update
  passes, preventing partial state changes on precondition failure.

* backend: Propagate backend thread exceptions to the main thread.

Introduce a mechanism to catch exceptions thrown on the backend thread and
rethrow them on the main thread. This prevents deadlocks and allows the
application to handle fatal backend failures gracefully.

- Consolidate synchronization primitives in DriverBase.
- Add mHasUnrecoverableError flag to interrupt blocked fence waits.
- Optimize waitForFence to avoid extra atomic reads in common paths.
- Propagate FenceStatus::ERROR across all backends.
- CommandBufferQueue now stores a std::exception_ptr when the backend fails.
- The backend enters a "zombie" state on failure, skipping further command
  execution but allowing clean shutdown.
- Public APIs in Renderer and Engine now check for stored exceptions and
  rethrow them, documented with @throws.
- Guarded by __EXCEPTIONS to ensure no overhead when exceptions are disabled.
- Add unit test for fence interruption and document new APIs.

BUGS=[407545700]

* feat: harden backend exceptions and add hasUnrecoverableFailure API

- Update Renderer::beginFrame() and Renderer::shouldRenderFrame() to
  return false early if an unrecoverable backend exception has been
  delivered to the main thread.
- Document the new return behavior for beginFrame() and
  shouldRenderFrame() in Renderer.h.
- Add Engine::hasUnrecoverableFailure() to the public API to allow
  apps to check for fatal errors without relying on exceptions.
- Implement hasUnrecoverableFailure() in FEngine by delegating to
  CommandBufferQueue.
- Expose Engine::hasUnrecoverableFailure() to Java bindings
  (Engine.java and JNI).
- Expose Engine::hasUnrecoverableFailure() to JavaScript bindings
  (jsbindings.cpp).

* java: propagate C++ Panics & exceptions to JAVA
This commit is contained in:
Mathias Agopian
2026-04-22 10:56:09 -07:00
committed by GitHub
parent fa987f225d
commit f4a079f663
81 changed files with 1381 additions and 525 deletions
@@ -16,7 +16,6 @@
#include <jni.h>
#include <functional>
#include <stdlib.h>
#include <string.h>
@@ -24,6 +23,7 @@
#include "common/CallbackUtils.h"
#include "common/NioUtils.h"
#include <common/JniUtils.h>
using namespace filament;
using namespace backend;
@@ -81,11 +81,13 @@ extern "C" JNIEXPORT void JNICALL
extern "C"
JNIEXPORT jlong JNICALL
Java_com_google_android_filament_MorphTargetBuffer_nBuilderBuild(JNIEnv*, jclass,
Java_com_google_android_filament_MorphTargetBuffer_nBuilderBuild(JNIEnv* env, jclass,
jlong nativeBuilder, jlong nativeEngine) {
MorphTargetBuffer::Builder* builder = (MorphTargetBuffer::Builder *) nativeBuilder;
Engine *engine = (Engine *) nativeEngine;
return (jlong) builder->build(*engine);
return filament::android::wrapJni<jlong>(env, [=]() {
return (jlong) builder->build(*engine);
});
}
// ------------------------------------------------------------------------------------------------
@@ -97,11 +99,13 @@ Java_com_google_android_filament_MorphTargetBuffer_nSetPositionsAt(JNIEnv* env,
jint targetIndex, jfloatArray positions, jint count) {
MorphTargetBuffer *morphTargetBuffer = (MorphTargetBuffer *) nativeObject;
Engine *engine = (Engine *) nativeEngine;
jfloat* data = env->GetFloatArrayElements(positions, NULL);
morphTargetBuffer->setPositionsAt(*engine, targetIndex,
(math::float4*) data, size_t(count));
env->ReleaseFloatArrayElements(positions, data, JNI_ABORT);
return 0;
return filament::android::wrapJni<jint>(env, [=]() {
jfloat* data = env->GetFloatArrayElements(positions, NULL);
morphTargetBuffer->setPositionsAt(*engine, targetIndex,
(math::float4*) data, size_t(count));
env->ReleaseFloatArrayElements(positions, data, JNI_ABORT);
return 0;
});
}
extern "C"
@@ -111,11 +115,13 @@ Java_com_google_android_filament_MorphTargetBuffer_nSetTangentsAt(JNIEnv* env, j
jint targetIndex, jshortArray tangents, jint count) {
MorphTargetBuffer *morphTargetBuffer = (MorphTargetBuffer *) nativeObject;
Engine *engine = (Engine *) nativeEngine;
jshort* data = env->GetShortArrayElements(tangents, NULL);
morphTargetBuffer->setTangentsAt(*engine, targetIndex,
(math::short4*) data, size_t(count));
env->ReleaseShortArrayElements(tangents, data, JNI_ABORT);
return 0;
return filament::android::wrapJni<jint>(env, [=]() {
jshort* data = env->GetShortArrayElements(tangents, NULL);
morphTargetBuffer->setTangentsAt(*engine, targetIndex,
(math::short4*) data, size_t(count));
env->ReleaseShortArrayElements(tangents, data, JNI_ABORT);
return 0;
});
}
extern "C"