ROM Hack Star Fox tech demo

GValiente · Feb 20, 2021

Hi, lately I have been working on a small 3D engine for the GBA.

It was a shame that Nintendo never did anything with Star Fox on the GBA, so I have made a small tech demo at 60 FPS.

Enjoy:

EDIT

I have created a new version with cell shading that still runs at 60FPS, but big polygons are not rendered well in all emulators I have tried, it only works on real hardware.

EDIT 2

I have fixed a couple of bugs in the cell shaded demo... it seems that the projection of a convex quad can end being concave thanks to precision issues.

Deleted member 514389 · Feb 20, 2021

Nintendo didn't, but Graphic-State back then did (Star-X).

Cool Demo!

Hows the polygon count ?

This might be up you alley aswell.

GValiente · Feb 20, 2021

Thanks!

All models and their shadows have 100 polygons combined.

Sterophonick · Feb 20, 2021

Woah, that runs fast!

Deleted User · Feb 20, 2021

That is impressive! It would be nice if you made it playable.

GValiente · Feb 21, 2021

I have fixed a small rendering bug and thanks to that I have removed some safety checks, so now it should look and run better.

The attached file in the first post has been updated.

Darksabre72 · Feb 21, 2021

dang, this is sick

GValiente · Feb 22, 2021

As I said in the first post, I have created a new version with cell shading that still runs at 60FPS, but big polygons are not rendered well in all emulators I have tried, it only works on real hardware.

The rom has been attached in the first post.

GValiente · Feb 25, 2021

GValiente said:
As I said in the first post, I have created a new version with cell shading that still runs at 60FPS, but big polygons are not rendered well in all emulators I have tried, it only works on real hardware.

The rom has been attached in the first post.

As I said in the first post, I have fixed a couple of bugs in the cell shaded demo... it seems that the projection of a convex quad can end being concave thanks to precision issues.

OmarElsayed · Mar 2, 2021

Very Nice! I will watch your career with great interest! (You do plan on finishing this, right?)

GValiente · Mar 3, 2021

Sorry, but I'm not planning to make a Star Fox port

I'll probably use the 3D engine in some game, but I don't want a Nintendo's C&D.

OmarElsayed · Mar 3, 2021

GValiente said:
Sorry, but I'm not planning to make a Star Fox port

I'll probably use the 3D engine in some game, but I don't want a Nintendo's C&D.

Is the tech demo out? Can I have the source code?

GValiente · Mar 4, 2021

OmarElsayed said:
Is the tech demo out? Can I have the source code?

You can download the roms in the atrached files of the first post.

The source code is still not released, but meanwhile here's an example of the same flat polygon rendering routine used in the tech demo: https://github.com/GValiente/butano/tree/master/examples/hdma_polygons

ROM Hack Star Fox tech demo

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