forums.ps2dev.org

[siberianstar]

Hello,

i'm developing a 3d game for psp but there is a problem with the psp culling system.

http://85.25.18.122/IM000345.jpg

the psp cut off the triangles that have the vertex too far from the screen, how can i solve it ?

I'm using pspgl

[jimparis]

Search forums for "clipping" and find lots of info, like
http://forums.ps2dev.org/viewtopic.php?t=2961&highlight=clipping

[siberianstar]

i'm using pspgl not gu

[siberianstar]

ok, then, i'm using pspgl. How can i see the real coords X,Y of a vector X,Y,Z.

[ector]

Well, if you're going to do manual clipping, you'll want to do it in 3D space.

But I think that you should just subdivide all your triangles into smaller ones, since the PSP can handle quite a lot of them without problems.
_________________
http://www.dtek.chalmers.se/~tronic/PSPTexTool.zip Free texture converter for PSP with source. More to come.

[siberianstar]

i've done a test ...

using 700 triangles = 60fps about
using 2100 triangles = 23fps

-_- and if i comment the glDrawElements the fps returns to 60fps also with 2100 triangles.

[siberianstar]

IF anyone used the pspgl how can i have the more speed?

[danzel]

I'm making a 2d game and I was rendering all the sprites by drawing 2 triangles, I changed this to use a triangle strip to draw each sprite and saw a 50% improvement.

[ector]

Do not ever draw your sprites or triangles one by one, always submit lists of triangles or sprites. You will get huge speed improvements compared to sending them off one by one.
_________________
http://www.dtek.chalmers.se/~tronic/PSPTexTool.zip Free texture converter for PSP with source. More to come.