feat: WebGPU 2-D image rendering, tiled display, binary pixel transport#26

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CSSFrancis merged 25 commits into

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feat/webgpu-2d-images

Jul 10, 2026

Commits on Jul 6, 2026

docs: LARGE_IMAGE_WEBGPU_PLAN — scope WebGPU 2D large-image + binary transport
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feat(webgpu-2d): shader-LUT texture render path for large scalar images (Phase 0)
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test(webgpu-2d): offscreen-texture readback hook for GPU correctness
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fix(webgpu-2d): keep plotCanvas first in DOM so canvas queries still resolve
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feat(webgpu-2d): plot.gpu_active echo + fallback tests
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docs(webgpu-2d): mark Phase 0 done + changelog fragment; note deferred items
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fix(webgpu-2d): critical review fixes — clim double-apply, zoom, leaks
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docs(webgpu-2d): record review-hardened correctness (clim/zoom/leak fixes verified)
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fix(webgpu-2d): quad respects _imgFitRect aspect/letterbox (re-review HIGH)
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feat(webgpu-2d): honour zoom/pan in the shader (real upsample on zoom-in)
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test(webgpu-2d): __apl_setZoom hook to verify GPU stays active + upsamples on zoom
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feat(electron): binary pixel transport (PLOTBIN) — framing + routing (WIP render)
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fix(electron): binary transport render path — geom-nested pixels + side-table
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perf(colormap): cache _build_colormap_lut (was rebuilt every frame, ~100ms)
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perf(normalize): float32 rescale for small-range data (~60ms->27ms/frame)
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Commits on Jul 9, 2026