[victormlourenco]

Problem

In Ocarina of Time the pause menus (for example the ocarina song menu) stood on a black background instead of the blurred scene, and the dark slots of songs not yet learned were invisible against it.

copy_t2t dropped every texture copy whose source and destination regions differ in size or format (RED_ONCE(33, …), then return). The menus build their backdrop from a copy of the 2560x1440 scene into a 1280x720 texture, so that texture was never written.

Fix

copy_t2t_draw (in games/totk/third_party/d2r_gfx/gfx/nvn/nvn_mtl.m) draws such a copy as one render pass per layer: the source region sampled into the destination region, nearest or (with NVN_COPY_FLAGS_LINEAR_FILTER_BIT) bilinear.

• Float, unorm and sRGB 2D / 2D-array colour textures only. Integer, depth/stencil, compressed, multisampled and 3D copies are left as before and keep the red line.
• A destination without render-target usage gets it through tex_upgrade_usage.
• The pass follows the same encoder pattern as bloomq_capture (its own argument table, a barrier at the start, m4_end), and the parameters live in the frame arena.
• TOTK_T2T_DRAW=0 turns it off for an A/B test.

Adapted from nxnative's copy_t2t_draw (MIT, commit e734ced7). The colour path only, rewritten for this backend; the row is in THIRD_PARTY_NOTICES.md.

Testing

• Played on a Mac (Apple M4 Max, macOS 27.2): Ocarina of Time v131072, built with build_app.py and updated with update_runtime.py. Opened the ocarina song menu in Kokiri Forest: the blurred scene now shows behind the menu, and the slots of unlearned songs are visible. The game log has scaled / format-changing texture copy: first case 2560x1440 format 92 -> 1280x720 format 92.
• python -m unittest discover -s tests: 1,376 pass. 5 modules (test_botw_import, test_dlc_import, test_game_containers, test_updates, test_xc3_shaders) do not load on this Mac because its Python lacks the cryptography package; that is unrelated to this change, which touches no Python.
• Tears of the Kingdom and Breath of the Wild share this graphics layer and can now take the same path: not built or played for them. A copy they made that used to be dropped is now drawn.

[ly05010419]

已合并并推送。新增验证提交：0d3ead2e。

测试提取并执行实际 copy_t2t_draw 实现，使用 Metal 4 提交和独立 CPU 像素期望：16 个 GPU 用例、15,360 个通道比对全部通过，覆盖最近点/双线性、非零区域、未覆盖区域保留、mip、数组多层、RGBA/BGRA/sRGB/半精度目标及部分拒绝路径。集成后的 Mac/iOS 图形源编译通过。

本轮未重做 OOT 菜单或共享游戏的实际游玩；没有把合成 GPU 回归等同于游戏验收。谢谢贡献。