NullDC4Wii - Alpha 0.06

🚀 Release Notes

This update focuses on performance improvements, early graphics fixes, and the introduction of new presets to prepare for future optimization and compatibility enhancements.

⚠️ IMPORTANT Please update Compatibility guide whenever you can

https://wiibrew.org/wiki/NullDC4Wii/Compatibility

(Update : both tested on Dolphin & a real Wii : works)

🔄 Summary of Changes

• ⚡ Faster loading times
• 🎨 Partial 2D & 3D color fixes (most 3D textures still glitching)
• 🧮 New Accuracy preset (keep ACCURATE for now — minimal impact at this stage)
• 🖼️ New Graphics preset (keep LOW for now)

Loading speed improvements were achieved by removing excessive CD-ROM loop messages that were impacting performance.

---

🛠️ Detailed Changes

Core Improvements

• sh4_fpu improved
• ccn improved
• drkPvr.cpp improved
• SGP.cpp improved
• driver.cpp improved
• wii-driver.cpp improved
• memutil.cpp improved
• mmu.cpp improved
• sh4_mem.cpp improved
• sh4_area0.cpp improved
• Multiple improvements across /dc/mem files

Graphics

• gx_rend improved
  • Fixes several 2D colors
  • Example fixes:
    • 2D titles in Castlevania
    • Ape model in Sega Tetris

(Most 3D texture glitches are still being worked on.)

Memory & Stability

• _vmem.cpp improved
  • May fix some crashes
  • Further improvements still required

Controls

• maple.cfg updated (control improvements)

---

🆕 Presets (New Feature)

⚠️ These presets are in early stages and will be refined over time.
Currently, they only affect a few internal routines.

---

🧮 Calculation Accuracy Preset

Mode	Description
FAST	Maximum FPS (higher frame rate)
BALANCED	Good balance between speed and accuracy
ACCURATE (default)	Closest behavior to original hardware

For now, differences are minor — but long term, this system should help improve both FPS and compatibility.

---

🖼️ Graphics Preset

Mode	Settings	Best platform
LOW (default)	GX_NEAR · lod_bias 0.0f · GX_DISABLE	Wii
NORMAL	GX_LINEAR · lod_bias 0.0f · GX_DISABLE	Wii
HIGH	GX_LINEAR · lod_bias -0.5f · GX_ENABLE · Anisotropic x2	Wii U
EXTRA	GX_LINEAR · lod_bias -1.0f (may need to adjust to -0.75) · GX_ENABLE · Anisotropic x4	Wii U

While the emulator is still in alpha, the visual difference is limited.

📊 Estimated future performance gap (once stable):
LOW → EXTRA ≈ 10 FPS difference

---

👨‍💻 Developer Notes

Debug Improvements

• Added memory debug info at render initialization:
  • MEM1 free
  • MEM2 free
• Added texture/cache size logs:

  sizeof(TextureCacheDesc)
  sizeof(GXTexObj)
  sizeof(GXTlutObj)````
  ## CDI Support

• Continued work to improve CDI compatibility
• Added extensive logging to help diagnose issues (see issue #10)

Debug Control Toggle

All excessive loop debug messages are now controlled by:

g_debug_message

• Located in main.cpp
• Default value: 0
• Set to 1 to re-enable verbose logging

---

🎮 Optional Extras

• Wii Forwarder by @Ploggy
• Wii U Overclock Forwarder (integrated) by @Zeox-Gamer

---

📌 Status

The emulator remains in alpha state.

This release lays the groundwork for:

• Better performance scaling
• Improved compatibility
• More refined graphics options

More improvements coming soon 🚀