Descriptor Heap Management

[vilbeyli]

Problem

Reloading the same scene will cause SRV heap (StaticResourceViewHeap) to run out of memory after a couple tries. 'Allocate and Forget' is the current strategy for descriptors.

Potential solutions

• Unload/ReInitialize/Load Renderer (quick, suboptimal)
• Separate Heaps for Engine vs Scene resources (requires copy desc?)
• Descriptor Heap Management using one of the architectures in the links below

Resources

• http://diligentgraphics.com/diligent-engine/architecture/d3d12/managing-descriptor-heaps/
• https://simonstechblog.blogspot.com/2019/06/d3d12-descriptor-heap-management.html
• https://docs.microsoft.com/en-us/windows/win32/direct3d12/resource-binding-flow-of-control
• https://software.intel.com/content/www/us/en/develop/blogs/direct3d-12-overview-part-4-heaps-and-tables.html
• https://asawicki.info/articles/memory_management_vulkan_direct3d_12.php5