c8f488b3cd
The blend map reports a quad's SIZE, which identifies an element and says nothing about whether it is visible -- a parked quad is still a draw call. This prints the NDC x/y range and per-vertex colour of every additive draw, per frame, so movement between frames and overlap with the [-1,1] box are readable directly. Written because sylpheed-port flagged exactly that conflation in my blend page: the blend and the visibility arrived in the same artefact. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
53 lines
2.0 KiB
Python
Executable File
53 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Where the two rotated sweep strips actually are, per frame, from a draw log.
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sweep_positions.py <xenia_re_ui_draws_NN.log> [...]
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The blend map reports a quad's SIZE. That identifies an element and says nothing
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about whether it is on screen: a parked quad is still a draw call. This prints the
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NDC x-range and the per-vertex colour of every 8-vertex ADDITIVE draw, per frame,
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so "submitted" and "visible" stop being the same observation.
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NDC x is in [-1, +1] across the surface, so a strip overlaps the screen iff
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x_min < 1 and x_max > -1. Movement between frames is the loop running.
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"""
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import re
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import sys
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VIS_LO, VIS_HI = -1.0, 1.0
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def quads(line):
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vs = [(float(a), float(b), c) for a, b, c in
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re.findall(r"\[(-?\d+\.\d+),(-?\d+\.\d+),z=[-\d.]+,col=([0-9A-F]{8})\]", line)]
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return [vs[i:i + 4] for i in range(0, len(vs) - 3, 4)]
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def main():
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for path in sys.argv[1:]:
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print("=== %s ===" % path)
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lines = open(path).read().splitlines()
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frame = 0
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print("%-6s %-5s %-6s %-18s %-18s %-8s %s"
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% ("frame", "draw", "quad", "NDC x range", "NDC y range", "col", "on screen?"))
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for i, line in enumerate(lines):
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m = re.match(r"--- frame (\d+) ---", line)
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if m:
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frame = int(m.group(1))
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continue
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m = re.search(r"^\s*(\d+) prim=\d+ indices=(\d+).* blend=0x01010101", line)
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if not m or i + 1 >= len(lines):
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continue
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for k, q in enumerate(quads(lines[i + 1])):
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xs = [p[0] for p in q]
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ys = [p[1] for p in q]
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on = min(xs) < VIS_HI and max(xs) > VIS_LO and min(ys) < VIS_HI and max(ys) > VIS_LO
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print("%-6d %-5s %-6d %7.2f .. %7.2f %7.2f .. %7.2f %-8s %s"
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% (frame, m.group(1), k, min(xs), max(xs), min(ys), max(ys),
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q[0][2], "ON SCREEN" if on else "parked off screen"))
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print()
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if __name__ == "__main__":
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main()
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