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[Feat, Docs] (Diligent): cache last PSO and document framebuffer/UBO progress

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- Reuse the last state PSO when program/render-state/topology/VAO layout is unchanged
- Update handoff with completed texture/sampler, UBO, framebuffer, and multi-draw work
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2026-08-23 09:10:53 +08:00
parent 827d46cad3
commit 403c82ac4a
3 changed files with 30 additions and 3 deletions
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HANDOFF_DILIGENT.md
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@@ -200,7 +200,7 @@ Notes:
- No swapchain / EGL window surface presentation yet; `Present()` only flushes.
- No transform feedback / queries / sync / readback of non-color resources.
- Some GL 3.2 entry points are still not implemented in the backend (draw range, multi-draw, blit, buffer subdata paths, etc.).
- The state PSO is recreated on every draw (no caching), which is slow but correct for now.
- A last-PSO cache now avoids recreating the pipeline when program/render-state/topology/VAO layout is unchanged; texture/UBO resources are still rebound dynamically per draw.
- The `GLFunctionsTable` is only partially populated.
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@@ -223,8 +223,8 @@ Notes:
- [ ] Handle per-program uniform block bindings / named UBO blocks.
4. **PSO / resource caching**
- Cache PSOs by program + VAO config + render state + topology.
- Cache textures, buffers, and SRBs.
- [~] Cache PSOs by program + VAO config + render state + topology (single last-PSO fast path).
- [~] Cache textures and samplers; buffers/SRBs can still be re-bound per draw.
5. **More GL 3.2 entry points**
- `DrawRangeElements`