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8856c1e669
Keep retained indexed SIXEL data and the bounded per-terminal output cache. Use the cleaned-up decoder and RGBA encoder from image_merge, including parser memory limits, pixel-size handling and references for pending output. Match retained SIXEL scaling to the shared image cell footprint and emit black definitions for undefined colour registers. Keep Kitty input, output, layers and placeholders. Adapt backend selection, flags, drawing and cleanup to the callbacks and Iscrl capability. Keep the pane-status repaint with the requested XXX comment. Replace the elaborate fallback with image_merge's implementation, removing its caches, sample structures, quadrant/sextant features and ACS additions. Keep the image_merge regressions and adapt the Kitty tests to the simpler fallback. Use skip status 101 and disable Python bytecode for image tests. Small changes still outside image_merge: - Guard zero-height synchronized redraws before bit_nset. - Select the image backend when the tty opens. - Enable imagescroll by default for Kitty and Ghostty. - Keep the explanatory manual-window pixel-size comment (comment only). - Keep the additional SIXEL fixtures and visual test tools. Validation: image-enabled and disabled builds; 31 image and 13 related regressions pass normally and under ASAN. All image tests skip without images. Focused palette, parser, scaling, transparency and Kitty layer tests also pass after the retained-output adjustments. Diff checks clean.
46 lines
1.8 KiB
Bash
Executable File
46 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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# Reduce a 512-colour cube to a SIXEL palette. Check colour error, opaque
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# pixels, palette size, extremes and reproducible output after redraws.
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PATH=/bin:/usr/bin
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TERM=screen
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export TERM
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[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
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python3 -B - "$TEST_TMUX" <<'PY'
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import base64
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import sys
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from image_test import image_test, sixel
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levels = [0, 14, 29, 43, 57, 71, 86, 100]
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palette = [(r, g, b) for r in levels for g in levels for b in levels]
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expected = [tuple((c * 255 + 50) // 100 for c in p) for p in palette]
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with image_test(sys.argv[1]) as test:
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client = test.attach()
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test.emit(sixel(32, 16, palette, list(range(512))))
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images = client.images()
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assert len(images) == 1 and images[0][:2] == (32, 16)
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assert images[0][2] == expected, 'original SIXEL palette changed'
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test.redraw()
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assert client.images() == images, 'retained palette changed on redraw'
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# Kitty input exercises RGBA quantization rather than SIXEL retention.
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rgba = bytes(c for pixel in expected for c in (*pixel, 255))
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test.emit(b'\033[2J\033[H\033_Ga=T,q=2,f=32,s=32,v=16;' +
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base64.b64encode(rgba) + b'\033\\')
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images = client.images()
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assert len(images) == 1 and images[0][:2] == (32, 16)
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actual = images[0][2]
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assert all(c is not None for c in actual), 'dithering introduced holes'
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assert 128 <= len(set(actual)) <= 256, len(set(actual))
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errors = [abs(a - e) for p, q in zip(actual, expected) for a, e in zip(p, q)]
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assert max(errors) <= 80, max(errors)
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assert sum(errors) / len(errors) <= 16, sum(errors) / len(errors)
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assert max(actual[0]) <= 30 and min(actual[-1]) >= 225, (
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'black/white extremes lost', actual[0], actual[-1])
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for _ in range(3):
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test.redraw()
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assert client.images() == images, 'palette or dithering changed on redraw'
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PY
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