CydandClaude Opus 4.8
cc7c95d738
The per-draw effect programs (0x816f000, second DMA emitter) parse and execute through the named ISA: 9 primitives, z-buffered perspective scene with u/v texture gradients. The earlier 'fixed per-tile program' conclusion was a sniffer artifact. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
"""Render fxtest's per-draw effect primitives from fx_program.pkl: per pair
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{19w setup: edges+z, 80w ladder: texz/u/v planes}, rasterize with z-buffer and
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visualize (u,v) as colour + z as depth. Structure render (no texel sampling)."""
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import pickle, os, struct
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import numpy as np
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from PIL import Image
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S = r'C:\Users\cyd\AppData\Local\Temp\claude\c--VWE-TeslaRel410\4e848c76-6e89-4034-8047-d8d491cb32d8\scratchpad'
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d = pickle.load(open(os.path.join(S, 'fx_program.pkl'), 'rb'))
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prog = d['prog']
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def f32(w): return struct.unpack('<f', struct.pack('<I', w & 0xffffffff))[0]
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def rd(a): return prog.get(a, 0)
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# find setup blocks: SETENABS followed by 0x..2c00-family edge headers
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setups = []
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addrs = sorted(prog)
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for a in addrs:
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if rd(a) == 0x100 and ((rd(a + 4) >> 8) & 0xff) == 0x2c:
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setups.append(a)
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print("%d effect primitives" % len(setups))
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W, H = 832, 512
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yy, xx = np.mgrid[0:H, 0:W].astype(np.float64)
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zbuf = np.full((H, W), -1e30)
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rgb = np.zeros((H, W, 3))
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drawn = 0
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for a in setups:
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# edges: 4-word {hdr(0x2c), A, B, C} groups until a non-0x2c header
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en_p = np.ones((H, W), bool); en_n = np.ones((H, W), bool)
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p = a + 4
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nedges = 0
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while ((rd(p) >> 8) & 0xff) == 0x2c and nedges < 6:
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A, B, C = f32(rd(p+4)), f32(rd(p+8)), f32(rd(p+12))
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v = A * xx + B * yy + C
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en_p &= v >= 0; en_n &= v < 0
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p += 16; nedges += 1
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en = en_p | en_n
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if not en.any():
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continue
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# scan forward for the z instr (op 0x21) then the ladder (first texu/texv L3)
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zp = None; up = None; vp = None
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q = p
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for _ in range(40):
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w = rd(q); op = (w >> 8) & 0xff; ad = w & 0xff
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if op == 0x21 and zp is None:
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zp = (f32(rd(q+4)), f32(rd(q+8)), f32(rd(q+12)))
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if op == 0x43 and ad == 58 and up is None:
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up = (f32(rd(q+4)), f32(rd(q+8)), f32(rd(q+12)))
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if op == 0x43 and ad == 78 and vp is None:
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vp = (f32(rd(q+4)), f32(rd(q+8)), f32(rd(q+12)))
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if up and vp and zp:
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break
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q += 4
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if zp is None:
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continue
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z = zp[0] * xx + zp[1] * yy + zp[2]
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en &= z > zbuf
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if not en.any():
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continue
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zbuf[en] = z[en]
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if up and vp:
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u = up[0] * xx + up[1] * yy + up[2]
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v = vp[0] * xx + vp[1] * yy + vp[2]
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# u/v as colour: hue-ish mapping, normalized per prim
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un = np.clip((u - u[en].min()) / max(1e-9, np.ptp(u[en])), 0, 1)
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vn = np.clip((v - v[en].min()) / max(1e-9, np.ptp(v[en])), 0, 1)
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rgb[..., 0][en] = 60 + 180 * un[en]
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rgb[..., 1][en] = 40 + 160 * vn[en]
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rgb[..., 2][en] = 220 - 140 * un[en]
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else:
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rgb[..., 0][en] = 200; rgb[..., 1][en] = 200; rgb[..., 2][en] = 200
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drawn += 1
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print("drawn %d" % drawn)
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img = np.clip(rgb, 0, 255).astype(np.uint8)
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Image.fromarray(img, 'RGB').save(os.path.join(S, 'fx_render.png'))
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zv = zbuf.copy(); m = zv > -1e29
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zi = np.zeros((H, W), np.uint8)
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if m.any():
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zn = (zv - zv[m].min()) / max(1e-9, (zv[m].max() - zv[m].min()))
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zi[m] = (40 + 215 * zn[m]).astype(np.uint8)
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Image.fromarray(zi, 'L').save(os.path.join(S, 'fx_depth.png'))
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print("wrote fx_render.png + fx_depth.png")
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