Wii/GameCube: Investigate switching from specifying vertices one by one to drawing using arrays

[UnknownShadow200]

Although since I can't test on actual hardware, will need help from someone who can to check what difference it makes to performance

[GK6475]

I've got a GameCube hooked up and ready to go. I also have a Nintendo 64, so I can test on that too, if needed.

[UnknownShadow200]

Note that the Nintendo 64 port has never been tested on real hardware, so use at your own risk ClassiCube-n64.zip

You may need the Expansion Pak

[GK6475]

Ok, I'll give it a try.

[GK6475]

This happened after attempting to load a session. It worked for a second, froze, then displayed all this. Page 5 was empty.

[UnknownShadow200]

Problem is with these lines in Intersection_RayIntersectsBox

invDirX = 1.0f / dir.X;
invDirY = 1.0f / dir.Y;
invDirZ = 1.0f / dir.Z;

If your camera happens to be looking exactly down the X, Y or Z axis, then dir.X/Y/Z will be zero

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ClassiCube relies on the FPU being configured to ignore the division by zero attempt and instead produce infinity as the result

However, when LibDragon is compiled in debug mode, it configures the FPU to instead raise exceptions on division by zero:

I will redesign the ray intersection code to avoid relying on dividing by zero though

[UnknownShadow200]

CCN64_v2.zip Can you please try this updated build instead?

[GK6475]

Yes, I'll try that shortly.

[GK6475]

It works, but feels like a slideshow, FPS must be less than 10. Some of the graphics are distorted, but if the framerate were better, I'd say this would be playable.

[UnknownShadow200]

Pretty amazing to see it running on actual hardware, thanks for testing!

The port hasn't been optimised at all, so there is quite a lot of room for improvement. Unfortunately I don't really have the time to implement a fully optimised port, but I will try to find some time to see if I can improve performance a bit

[GK6475]

Yeah, it would be neat to see the port run in a playable speed, like at least 20fps. But this is a pretty cool proof of concept.

[daevangelion]

@UnknownShadow200 not sure if you are aware or use discord, but there is a discord https://discord.gg/66xXTnjk for N64 Development, the #rom-testing channel would be a good place to upload test roms, and #libdragon for questions re libdragon usage.

[UnknownShadow200]

@UnknownShadow200 not sure if you are aware or use discord, but there is a discord https://discord.gg/66xXTnjk for N64 Development, the #rom-testing channel would be a good place to upload test roms, and #libdragon for questions re libdragon usage.

I do have Discord, but TBH I'm a bit reluctant to join there because I don't want to waste people's time

I've made some further changes to the Nintendo 64 port, so water should render now and FPS should show in the top left (not sure how accurate it is though) ClassiCube-n64-v4.zip