aa7d3a3bf4
The export render bucket was dominated by re-rendering the static document background through Vello every frame and by nearest-sampling the video on upscale. - Background cache: render the (static) background through Vello once, snapshot the composited HDR accumulator, and restore it with a single texture copy on every later frame instead of a Vello render + sRGB-convert + composite (+2 submits). Invalidated on resize. background-render 3.6ms -> 0.56ms (1080p), 7.5ms -> ~0.5ms (4K). - blit_straight now uses the bilinear sampler — video frames are scaled to the output size, and nearest made that blocky. Fixes export and live preview. - LB_RENDER_PROFILE: gated per-frame timing split (build/decode vs composite/ upload vs srgb, and background vs layers) used to find all of the above. Kept as a debug aid for the remaining decode stages. Net: export render ~12.8ms -> ~7.4ms/frame on a 1080p video clip. |
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| .. | ||
| beamdsp | ||
| egui_node_graph2 | ||
| gpu-video-encoder | ||
| lightningbeam-core | ||
| lightningbeam-editor | ||
| .gitignore | ||
| Cargo.lock | ||
| Cargo.toml | ||
| GPU_VIDEO_DECODE_PLAN.md | ||
| build-static.sh | ||
| build-windows.bat | ||