Скачать или смотреть Fixing a MASSIVE Memory Leak in Hazel! // Renderer 2025 // Hazel Engine Stream (09.06.2025)

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0:00 Opening & Current State
Cho introduces the stream and discusses the current state of Hazel engine
UI rendering with the new renderer is working well
Ready to progress on Hazel's 3D renderer
Updated to latest ImGui version

5:00 Major Memory Leak Discovery
Discovers a massive memory leak in Hazelnut editor
Memory usage climbing continuously in Task Manager
Memory tracking tools not showing the full picture
Investigates using Visual Studio profiling tools and Tracy profiler

30:00 Deep Debugging Session
Traces memory allocations to NVRHI vector operations
Command buffer allocations happening every frame
Discovers that set_graphics_state is allocating significant memory
Memory usage climbing at 200-300MB per second

1:00:00 NVRHI vs NRI Discussion
Community member suggests NRI (NVIDIA Render Interface) as alternative
Discusses differences between NVRHI and NRI:
- NRI offers better memory management
- NRI is lower-level but more performant
- NVRHI has automatic barrier tracking (major selling point)
Evaluates pros and cons of switching rendering backends
Runs NRI samples and discusses

2:30:00 Root Cause Discovery
BREAKTHROUGH: Discovers the memory leak is caused by missing garbage collection
NVRHI requires calling device.runGarbageCollection() every frame
Command buffers weren't being properly cleaned up
Fixes the leak by adding the garbage collection call

3:05:00 NVRHI Update & Fixes
Updates to latest NVRHI version
Resolves build issues with new dependencies
Memory leak completely resolved after garbage collection fix

3:40:00 UI Rendering Issues Investigation
Investigates icon filtering/blending problems
Icons appear pixelated instead of smooth
Examines shader bindings and sampler states
Compares rendering between old and new Hazel versions
Discovers blending state issues but doesn't fully resolve

Stream Summary by Claude Sonnet 4