flowchart TB
  A["bgfx init:<br/>CheckFeatureSupport(D32_FLOAT)"] --> B{"MULTISAMPLE_RENDERTARGET<br/>in Support1?"}
  B -- "before: no" --> C["no MSAA cap<br/>for D32_FLOAT"]
  C --> D["46-fsr asks for a<br/>4x depth target"]
  D --> E["bgfx refuses the texture:<br/>the frame buffer is invalid"]
  E --> F["scene never drawn:<br/>UI over black"]
  B -- "after: yes" --> G["4x colour + 4x depth<br/>frame buffer"]
  G --> H["ResolveSubresource<br/>into a 1x texture"]
  H --> I["FSR upscale and present:<br/>matches native"]