Re: [PyOpenGL-Users] openglcontext 2.0 problem

[<il...@ya...>]

 --- gabor <ga...@re...> wrote: > hi,
> 
> 1.
> i've created a simple app using testcontext. my
> render method looks like
> this:
>         def Render(self, mode = 0):
>                 BaseContext.Render(self,mode)
>                 glDisable(GL_CULL_FACE)
> 
>                 t = time.time()
>                 for trilist in self.tris:
>                        glVertexPointerd(trilist )
>                       
> glEnableClientState(GL_VERTEX_ARRAY);
>                        glDrawArrays(GL_TRIANGLES,
> 0,len(trilist))
> 
>                 t = time.time() -t
> 
>                 print "renderTime",t *

Try this?

if self.tris:
    glEnableClientState(GL_VERTEX_ARRAY);

for trilist in self.tris:
    glVertexPointerd(trilist )
    glDrawArrays(GL_TRIANGLES,  0,len(trilist))

if self.tris:
    glDisableClientState(GL_VERTEX_ARRAY);

If it's not much faster then, maybe one of these
functions is copying the memory each time.

How long is trilist usually?

Does glVertexPointerf work for you?



> 1000.0,"milliseconds"
> 
> i'm rendering around 1500-2000 wireframe triangles
> this way, and it's
> too slow... i got renderTime around 37
> miliseconds..., that means around
> 30fps...
> 
> if i do it with the gl functions commented out i got
> aroun
> 0.007 miliseconds...
> 
> does that rendering take so long?
> 
> then i replaced that glVertexpointer code with:
> 			glBegin(GL_TRIANGLES)
>                         for v in trilist:
>                                
> glVertex3f(v[0],v[1],v[2])
>                         glEnd()
> 
> and it renders in around 28 miliseconds... it's
> faster ?!?!?!?!?!?!
> 
> what am i doing wrong?
> 
> 
> 2.
> a have meshes defined as list of triangles... i need
> to do be able to
> pick a triangle of it with the mouse... in the past
> i used glUnproject
> to get the mouse coords, and then doing the
> intersection math...
> is there something on OpenGLContext2 that i could
> use for this?
> 
> thanks,
> gabor
> 
> 

__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
from News and Sport to Email and Music Charts
http://uk.my.yahoo.com