Raptor 3D is a homebrew 3D engine for the PSP. It's a 3D graphics tool for people who want to develop their own homebrew games. Remember this is at the alpha stage, and there might be bugs, but Kojima's been pretty quick with updating previous versions.

Here's Kojima's description of this latest alpha:

* An Infinitely Faster Animation System
Optimized to the absolute brink; the previous demo which ran at 21fps now runs at over 60fps (how much over is hard to tell, with the PSP's 60fps HW limit). So now you can realistically use animated meshes within your app game.

* A Single Surface Particle System
This is easy to use: it's a particle system where each particle is part of a single surface generated in each frame (optimized so it's fast). This means that even if you have a thousand particles, they are all rendered in one call to glDrawElements. All particles are automatically pointed towards the active camera, and can be textured.

* 3D Text Capability
The font renderer can now produce 3D text and return them as an entity usable just like any other mesh. You can rotate, scale, and position them anywere in your 3D world. Like the font renderer, it uses the active font as the texture for the text.

* Material Blend Modes
Now each material has a blend mode that specifies how it is blended in with the screen. Currently supported is Mask which treats transparant pixels as see-through even on 3D meshes (perfect for fences, windows, etc.). This allows you to use simple geo with complex shapes. Also supported is Solid and Add.

* A 3D Credit System
Using the 3D text engine, this allows you to create rolling credits (like the credits at the end of a movie or game).

The demo included with the code has a rolling intro similar to "Star Wars" movies (it calls for a music file called "theme1" so Kojima explained: "I use the actual 'Star Wars' theme personally but for legal reason I can't include it").

Of course, this latest alpha release also includes more bug fixes and other improvements.