nvn_tex.c multiplied a level's width by its samples and its blocks by their bytes in 32 bits, and
nvn_tex_linear_stride did the same: a descriptor with a width past 2^30 (garbled, or not set up yet) wrapped to a small
size, and the texture got a small allocation for a large image. Block counts, row bytes and GOB counts are now 64-bit
(mip, blk, pick_tile and adj_tile take 64-bit sizes), and the linear stride saturates at 2^32 - 1 instead of wrapping.
Real textures lay out as before.
Checked: --probe-nvn-tex gains two cases (an RGBA8 texture 2^30 + 64 texels wide, and its linear stride). Before, the
first failed: 2,048 bytes against 2^35 + 2,048. After, all 135 cases pass, the 40 layout goldens of the original SDK
among them; --probe-nvn shows the same four failures as the baseline.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Each file that contains copied code names its copyright holder and license and points at THIRD_PARTY_NOTICES.md; zlib code keeps its full notice and the mark that it was altered. Comments and probe text only.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Comments say what the code does and why, docs/maxwell.md keeps the Maxwell facts, and fetch_refs.sh clones only the checkout the build reads. Code is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
