CydandClaude Opus 4.8
bf234842cb
These changes were made and verified earlier this session (the all-cyan bug
fix is already recorded as SOLVED in project memory) but never got committed --
render_final.py has referenced dpl_sampler as a module in its docstring since
ac4142e7, yet dpl_sampler.py itself was never added, leaving the repo unable
to run the M4b/M4c/M4d renderer scripts that all import it.
texstore.py: fix the texel word format. SVT texels are [pad,B,G,R] (ground
truth: dpl3-revive patha/vrboard.py do_texels + stage_assets.py); reading RGB
as bytes (0,1,2)=(pad,B,G) zeroed red, producing the all-cyan render. Correct
read is bytes (3,2,1).
dpl_sampler.py: the authentic IG-board texture-value model (wrap repeat/clamp,
near-black CUT keying) factored into its own tested module, distilled from the
shipped libDPL headers -- see IG-SHADING-MODEL.md (also added, referenced by
render_final.py's docstring but likewise never committed).
igc_exec.py: OP48/OP49 candidate opcodes (pixel global-X/Y seed into mem) added
to the CPU golden-model executor alongside the existing SCMEMA seed handling.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
41 lines
1.8 KiB
Python
41 lines
1.8 KiB
Python
"""M3 texel store: parse the game wire's action-0x1a texture uploads into a
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handle -> (u_size, v_size, mode, RGB array) dict. Format: header[32] =
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{handle, byte_size, u, v, mode, ...}, then v rows of 256 bytes, then n=u*v texels.
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TEXEL WORD = [pad, B, G, R] bytes -- "SVT xbgr" (ground truth: dpl3-revive
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patha/vrboard.py:448 `do_texels` + stage_assets.py:43, the actual renderer's own
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decode). Byte 0 is a PAD (verified: 0 in every texel across the capture); the
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colour is bytes 1,2,3 = B,G,R, so RGB = bytes (3,2,1). There is NO alpha byte --
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cutout ("dpl_tex_value_cut") is done by NEAR-BLACK keying at draw time, not a
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stored channel (patha/vrview_gl.py). `mode` 1 is the board's internal 8-bit
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storage path; the WIRE upload is always 4 bytes/texel regardless of mode.
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Reading RGB as bytes (0,1,2) = (pad,B,G) -- zero red -- was the all-CYAN bug."""
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import struct
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import numpy as np
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def build_texstore(recs):
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store = {}
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i = 0
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while i < len(recs):
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a, p = recs[i]
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if a == 0x1a and len(p) == 32:
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h = [struct.unpack_from('<I', p, 4 * k)[0] for k in range(8)]
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handle, u, v, mode = h[0], h[2], h[3], h[4]
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rb = b''
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j = i + 1
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while j < len(recs) and recs[j][0] == 0x1a and len(recs[j][1]) == 256:
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rb += bytes(recs[j][1]); j += 1
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n = u * v
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if n and len(rb) >= n * 4:
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arr = np.frombuffer(rb[:n * 4], dtype=np.uint8).reshape(v, u, 4)
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# texel = [pad,B,G,R] -> RGB = bytes (3,2,1); v-flip (rows arrive
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# bottom-up: 'PLAYER' reads mirrored otherwise)
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rgb = arr[::-1, :, 3:0:-1].copy() # (R,G,B) from (3,2,1)
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store[handle] = (u, v, mode, rgb)
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i = j
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else:
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i += 1
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return store
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