forums.ps2dev.org

Raeldor · Joined: 11 Jul 2005 Posts: 4

Is there, or will there be an OpenGL wrapper for the 3d functionality on the PSP? Is anyone working on such a project?

Thanks

ector · Joined: 12 May 2005 Posts: 195

Such a thing could be written. I don't know of anyone doing it so go ahead, it would be useful.

grp · Joined: 11 Jul 2005 Posts: 1

Maybe not OpenGL, but OpenGL ES. Will be much easier to implement.

- grp

KaL · Joined: 03 Apr 2005 Posts: 41

The libGU already looks like openGL (with no Matrix manipulation lib - which is libGUM, not released yet by pspdev -) I don't think that an openGL implementation would be really useful. But, why not ?

ReKleSS · Posted: Mon Jul 11, 2005 8:29 pm Post subject:

An OpenGL implementation would be most useful for porting. SDL is usable in it's current state, meaning games can just be compiled for psp, and work with minimal changes - OpenGL would make that apply to 3d stuff sa well. In theory, anyway...
-ReK

KaL · Joined: 03 Apr 2005 Posts: 41

I don't remember if any of the GL implementations on PS2 helped porting projects..

Thanhda · Joined: 09 Apr 2005 Posts: 331 Location: Canada

rinco · Posted: Tue Jul 12, 2005 10:40 am Post subject:

jsgf · Joined: 12 Jul 2005 Posts: 254

I have Mesa compiled and running; I've started writing a GU/GE-based driver backend for acceleration.

I was thinking about making it OpenGL/ES, but full OpenGL fits. Without any cutting back, libGL.a is about 2Mbytes, which is probably a bit fat... Certainly the ES subset will run efficiently (doing everything as vertex arrays is a good match for GU).

Warren · Joined: 24 Jan 2004 Posts: 173 Location: San Diego, CA

OpenGL/Es I think woudl be the best for PSP as it's what OpenGL/ES was designed for and it's what's supported on the PS3 so people might as well get a start on it now.

Thanhda · Joined: 09 Apr 2005 Posts: 331 Location: Canada

if you know your stuff, and you want to do it, then i say go for it, we could really use an OpenGL like api for the psp.
_________________
There are 10 types of people in the world: Those who understand binary, and those who don't...

jboldiga · Joined: 20 Jun 2005 Posts: 27

I have to second the OpenGL/ES idea...PS3 is using it and it will greatly benefit us to have gfx code that we can quickly port. OpenGL is a lil' too bloated for PSP IMHO.

jsgf · Joined: 12 Jul 2005 Posts: 254

Obviously I'm going to concentrate on the parts of OpenGL which are actually accelerated on the PSP, and that subset will look a lot like OpenGL/ES. Since /ES is a pretty strict subset of full OpenGL, it will be easy to clean things up into a strict ES implementation if that's what people really want.

But OpenGL/ES has a fair number of missing calls compared to full OpenGL (no glBegin/End/Vertex, for example), which means you have to port to it rather than just recompile. It may be that people really want to run real OpenGL code without having to convert it all to vertex arrays...

rinco · Posted: Sat Jul 23, 2005 8:50 pm Post subject:

I have submitted TinyGL to svn.

TinyGL is a software renderer that is much smaller than Mesa.

I used a version that has sdl support:
http://sourceforge.net/projects/sdl-tinygl

Thanhda · Joined: 09 Apr 2005 Posts: 331 Location: Canada

very nice, havnt tried compiling it yet, but looks very similar too ogl. i've notice the folders says gp32-x so is this a psp implementation or a gp32 implementation?
_________________
There are 10 types of people in the world: Those who understand binary, and those who don't...

rinco · Posted: Sun Jul 24, 2005 9:55 am Post subject:

I believe it was gp32 hackers that patched SDL support into this version of TinyGL.

But if you type 'make' you will get a psp build.

Thanhda · Joined: 09 Apr 2005 Posts: 331 Location: Canada

i tried, few linker errors i believe, if you happen to manage to compile it to a pbp would you mind posting an example online?
_________________
There are 10 types of people in the world: Those who understand binary, and those who don't...