devkitPro

On a Game Boy Colour game (years ago) I used fractional positions. The sprite structure then stored the speed in pixel-per-frame, and by using a value lower than one I could make it move slower. Obviously I didn't have floating point, but I wrote everything with 16.8 bit fixed point. So when updatin...

I guess you could try making your own, by putting a function table at the beginning of the binary and compiling as position-independent code (PIC).

BTW, it would be nice to know if people got this to build/run for themselves.

Oh yeah, just a bit of explanation how it should work, so other people don't have to dig through the patents: Emboss bump mapping You need a displacement texture, that is a grayscale texture that describes how far a point is away from the polygon surface. That is set up as an input texture for two t...

I'm still trying to get some bump mapping code working on the GameCube, but unfortunately my work and other things leave me no free time at the moment. Here is what I've got so far: http://bin.mypage.sk/FILES/bumpmap_demo.zip The menu is operated from the digital pad: mode 0: emboss bump mapping. Th...

I seem to have a problem with state updates when using GX_SetTevOrder. Before I delve into the guts of gx.c, has anyone else looked into this? The problem is, that my shader setup works differently depending on what shader I run before. If I run GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD1, GX_TEXMAP1,...

I've got a problem with the texture matrix: The GX_DTTMTXx matrix works exactly as expected, but the GX_TEXMTXx matrix has no influence at all. I'm not sure if it's GX_LoadTexMtxImm or GX_SetTexCoordGen2 that is causing problems. Did anyone have any success using texture matrices?

Okay, got it, and after a few tweaks I got it build: on 10.3 I had to install the latest gawk + make, and make sure the script uses them. And the strip failed because it didn't like to be run on scripts (for example powerpc-gekko-embedspu). I adjusted my demo and it works fine. And the scale factor ...

The latest CVS version contains GX_SetIndTexMatrix (thanks shagkur!), but I can't seem to link it right now: /opt/local/devkitpro/libogc/lib/cube/libogc.a(lwp.o): In function `__lwp_sysinit': lwp.c:(.text.__lwp_sysinit+0xd6): undefined reference to `__crtmain' lwp.c:(.text.__lwp_sysinit+0xde): undef...

Just to update based on what I learned working on my demo : The "s" part is controlling the scale of the outgoing coordinates (Block 526), GX_SetIndTexCoordScale seems to be the divider for incoming texcoords. It is important to enable point sampling for the indirect texture if you want tiling, and ...