This sample demonstrates dynamic memory allocation during rendering in Vulkan, utilizing the VK_EXT_memory_budget extension for GPU memory management.
- Runtime memory allocation
- GPU memory budget querying
- Adaptive memory deallocation
- Menger sponge fractals with nested complexity
- Placeholder generation for higher-order fractals
- Threaded memory allocation
- Per-frame memory budget querying
- Adaptive deallocation on budget exceedance
- Dynamic budget adjustment based on application focus
- Mesh count reduction in non-focused instances
- Separate queue families for allocation and rendering
- Transfer queue usage for non-blocking memory transfers
- Average memory per Menger sponge: ~142MB (variable due to randomization)
- Example scenario:
- 32 rendered sponges
- 4.29 GB memory usage
- 5.4 GB memory budget
- 49.14 million triangles total
- Query memory budget every frame
- Implement adaptive memory management for performance stability
- Utilize separate threads and queues for allocation and rendering
Memory budget differs from free memory, allowing full-speed operation without system memory transfers, thus minimizing stuttering and enhancing performance.