Gran Turismo 4
Developer(s): Polyphony Digital
Genre: Racing
Wikipedia: http://en.wikipedia.org/wiki/Gran_Turismo_4
Test configuration on Windows:
PCSX2 version: | 0.9.9 r4878 |
Graphics by GSDX: | r4873 |
Sound by SPU2-X: | r4872 |
Pad plugin is LilyPad: | r4484 |
BIOS version: | USA v2.00 |
Comments:
- This game requires a ton of personal tinkering to get it to run decent.
Hack comments: Hacks: EE CycleRate (3), INTC, Wait Idle Loop, mVU flag hack.
- MTVU may increase speed in quad cores, in dual-cores it increases depending on the race but may cause slowdown in others.
- Other hacks cause crashes or game won't boot.
PCSX2 version: | 1.0.0 |
Graphics by GSdx: | 0.1.16 |
Sound by SPU2-X: | 2.0.0 |
BIOS version: | USA 2.00 |
Comments: Stock settings, just the GS had to be switched to GSdx. Only problem is that in a race it is too slow (20-30 fps) and the game doesn't work with frame skipping; with hardware video acceleration enabled in GSdx, it is twice as slow. The problem seems to be the CPU. System: Core i3-2100 3.1 GHz dual core+HT, Nvidia 8800GT with proprietary 295.40 driver, Kubuntu 12.04 64 bit.
PC specs used to test the game:
CPU: | Intel C2D e8400 OC 3.6Ghz |
GPU: | nVidia GeForce 260GTX |
Comments:
- This game has very, VERY high requirements. Don't expect a smooth or stable game. Heavy slowdown often. Mostly depends on track, lights and the amount of cars on screen.
- "Allow 8-bit textures" in GSdx may help with speed a bit more and maybe reduce the Vram slowdowns.
- In Gsdx config change the interlacing mode to Bob tff to stabilize the image.
Known issues:
Crashes
Crashes pretty often. Happens because of spikes in VRam use.
- If you get lots of crashes during license tests use lower internal resolution in GSdx or use ZeroGS or ZZOgl, expect much slower speeds from using the last two.
- In GSDX HW AA causes the game to crash alot so set it to 0, running the game with native res seems to help as well.
- Additionally in Windows XP even in native resolution you may get instant crashes when starting races if you don't have enough VRam, using a custom resolution lower than 512x512 seems to help.
- Solution: Set VU Clamping Mode to Extra to fix.
Garbage all over screen in races
Happens when using color/brightness options other than 0.
- Solution: To fix the super broken graphics and crashing during races set the Brightness to 0 in options.
- Solution 2: In Ntsc version , change the display in game config to Normal, then you can set the brightness to 5 whithout the broken graphics, and get a clearer picture.
Demo races not working
Demonstrations return back to menu as soon as they start.
- Solution: Only work with EE clamping set to full.
Broken Photos
Photos are all messy. Solution: Unknown.