71 lines
3.1 KiB
Python
71 lines
3.1 KiB
Python
"""
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Blender Python script for rendering a GLB file to PNG.
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Targets Blender 5.0+ (EEVEE / Cycles).
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Called by Blender:
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blender --background --python blender_render.py -- \
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<glb_path> <output_path> <width> <height> [engine] [samples]
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engine: "cycles" (default) | "eevee"
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Features:
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- OCC-generated GLB: one mesh per STEP part, already in metres.
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- Bounding-box-aware camera: object fills ~85 % of the frame.
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- Isometric-style angle (elevation 28°, azimuth 40°).
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- Dynamic clip planes.
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- Standard (non-Filmic) colour management → no grey tint.
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"""
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import sys
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import os
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import time as _time
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os.environ["PYTHONUNBUFFERED"] = "1"
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if hasattr(sys.stdout, "reconfigure"):
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sys.stdout.reconfigure(line_buffering=True)
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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import bpy # type: ignore[import]
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from _blender_gpu import activate_gpu
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from _blender_args import parse_args
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from _blender_scene_setup import setup_scene
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from _blender_render_config import configure_and_render
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# ── Parse arguments ────────────────────────────────────────────────────────────
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args = parse_args()
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print(f"[blender_render] engine={args.engine}, samples={args.samples}, size={args.width}x{args.height}, smooth_angle={args.smooth_angle}°, device={args.cycles_device}, transparent={args.transparent_bg}")
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print(f"[blender_render] part_names_ordered: {len(args.part_names_ordered)} entries")
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print(f"[blender_render] {'template='+args.template_path+', collection='+args.target_collection+', lighting_only='+str(args.lighting_only) if args.use_template else 'no template — Mode A'}")
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if args.material_library_path:
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print(f"[blender_render] material_library={args.material_library_path}, material_map keys={list(args.material_map.keys())}")
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if args.template_inputs:
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print(f"[blender_render] template_inputs={args.template_inputs}")
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# ── Early GPU activation (must happen BEFORE open_mainfile / Cycles init) ─────
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_early_gpu_type = activate_gpu(args.cycles_device)
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# ── Timing harness ─────────────────────────────────────────────────────────────
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_t0 = _time.monotonic()
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_timings: dict = {}
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def _lap(label: str) -> None:
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now = _time.monotonic()
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if not hasattr(_lap, "_last"):
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_lap._last = _t0
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delta = now - _lap._last
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_timings[label] = round(delta, 3)
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print(f"[blender_render] TIMING {label}={delta:.2f}s (total={now - _t0:.2f}s)", flush=True)
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_lap._last = now
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# ── Scene setup + render ───────────────────────────────────────────────────────
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setup_scene(args, _lap)
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configure_and_render(args, _early_gpu_type, args.use_template, _lap)
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_total = _time.monotonic() - _t0
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print(f"[blender_render] TIMING_SUMMARY total={_total:.2f}s | " +
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" | ".join(f"{k}={v:.2f}s" for k, v in _timings.items()), flush=True)
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print("[blender_render] Done.")
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