Claude 20ef08b3b8 Decode the first GEN_MODE write even when it is all zeros ...

The BP register cache skips writes equal to the cached value, and the
cache starts at zero. A cold GEN_MODE write of zero (one TEV stage, no
culling, no channels or texgens) was therefore dropped, leaving the
decoded state at zero TEV stages until some other GEN_MODE value arrived.
Seed the cache's register ID byte so the first write always decodes.

From upstream patchzyy/Wiicompiled 6f14bde (#244, KartPad batch).

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wg7mB8ogCWmp9GH19Uc82B

2026-10-05 13:29:26 +00:00

..

command_processor.cpp

Stop draws from merging or reading past their own vertices

2026-10-05 13:29:17 +00:00

command_processor.hpp

init

2026-08-23 17:10:50 +02:00

fifo.cpp

init

2026-08-23 17:10:50 +02:00

fifo.hpp

init

2026-08-23 17:10:50 +02:00

frame_interpolation.cpp

Refactor stereo frame worker and interpolation tests for enhanced VR performance

2026-10-01 00:37:49 +02:00

frame_interpolation.hpp

Refactor stereo frame worker and interpolation tests for enhanced VR performance

2026-10-01 00:37:49 +02:00

gx_fmt.hpp

init

2026-08-23 17:10:50 +02:00

gx.cpp

Implement native composite source handling for Mario Kart Wii ghost kart effect

2026-09-26 05:17:49 +02:00

gx.hpp

Decode the first GEN_MODE write even when it is all zeros

2026-10-05 13:29:26 +00:00

model_visibility.hpp

Implement Bullet Bill model visibility and cockpit recentering improvements

2026-09-28 23:21:01 +02:00

native_wheel.hpp

Merge kart draws again while the native steering wheel is animated

2026-09-23 01:04:06 +02:00

pipeline.cpp

Implement native composite source handling for Mario Kart Wii ghost kart effect

2026-09-26 05:17:49 +02:00

pipeline.hpp

Stop draws from merging or reading past their own vertices

2026-10-05 13:29:17 +00:00

shader_info.cpp

Refactor stereo frame worker and interpolation tests for enhanced VR performance

2026-10-01 00:37:49 +02:00

shader_info.hpp

Refactor stereo frame worker and interpolation tests for enhanced VR performance

2026-10-01 00:37:49 +02:00

shader.cpp

Read packed three-byte vertex attributes without touching the next word

2026-10-05 13:17:47 +00:00

texture_bind_group_cache_key.hpp

init

2026-08-23 17:10:50 +02:00