#Daytona usa netboard not present Patch#
#Daytona usa netboard not present code#

Doing the maths with double precision and casting back to float was enough to fix the issue. Basically we were running out of precision in a rare corner case. Anyway this fixes quad rendering looking broken with the latest nvidia drivers.įix the sky in harley in first person mode where pixels in the sky are culled when they shouldn't be with the quad renderer. Our algorithm was culling these out so the mipamp calculation failed for edge pixels. If there are no adjacent pixels the hw may need to spawn invisible fragments outside of the visible polygon. To calculate the mipmap value the opengl needs to calculate the difference in the texture coordinates between adjacent pixels. Really should cull against 5 frustum planes. Otherwise they end up getting written at like 99.8% of the frame and overlapping with the next. Stretch the time the ping_pong bit flips a bit to bump writes into correct frame. We aren't 100% sure if IRQ2 or the ping_pong bit is vblank. When the ping_pong bit flips at 66% of the frame time, games were writing data for a new frame, which meant writes were often straddling 2 separate frames. This mostly worked, but some games were writing more or less frames than they should have been for a given time period. Unfortunately we didn't have the correct values and just manually used some per game hacks to get games to run. The h/w polls something called the ping_pong bit at start-up to sync the GPU with the CPU.

#Daytona usa netboard not present Patch#

Thanks to our anonymous contributor who managed to patch a model 3 game and run it on real h/w, we were able to obtain some timing values we had been long been missing for correct emulation. The hardware must have some method to sanitize the near/far for instance if you render something extremely close to the origin you will also blow apart any near/far calc.

Ocean hunter in the middle of the game is passing a few matrices with FLT_MAX inside them, which blows apart our near/far calculation.

#Daytona usa netboard not present code#

Replaced the old spaghetti code with a more modern implementation.įix possible negative pointer arithmetic which was causing the music to wrap around.Ī culling node must follow immediately after a viewport. Previous mpeg audio code worked for me in debug mode, but the release build had some serious corruption issues when being built in visual studio. Option '-print-inputs' works again if no ROM set specified Disabled Alt-O (dump timings) and Alt-U (dump input state) when I really appreciate any help anyone can give.Restore Sega Rally 2 music in some practice stages Replacing them is not a problem but finding the part is! Could I use these slightly different chips instead? If anyone could have a look for me and see if these are a compatible replacement that would be great as I'm not too clued up on the ins and outs of RAM chips. They are the same dimensions with a near identical pinout. The Mobo arrived today, alas the SGRAM chips are different! Instead they are Siemens HYB39S16320TQ. I read an article that said these chips can be found on an old Compaq laptop motherboard ( ). I cannot find these chips NEC D4811650GF-A12 anywhere online apart from obscure Chinese sites. The 'Polygon Memory, IC70 and IC71 fail the test and according to this guide the step 2 boards use a single IC (IC12) instead of the two afformentioned chips. According to this help document over at aussie arcade forums ( ) I have a faulty IC12. I am helping out a firend who runs an arcade and needed some help with the model 3 videoboard. Heyy folks, I'm new here and would just like to greet everybody on these forums.