how do i use nvidia vertex programs in opengl? my problem is that i dont know how to compile or load them. in d3d i had a compiler named nvasm. but how do i do this in opengl? i didnt find such a program in the sdk! cody

ah thanks, you are right...

i have got it working now but i have some problems with the transformations:

i want to render some vertices of a model, so the coordinates are given in model-space.
the nvidia docs say the vertex program must transform them to "homogenous clip space". but wat means that and which transformations i have to apply?

i tried this:
when the models transformation matrix is set i use
glTrackMatrixNV( GL_VERTEX_PROGRAM_NV, 0, GL_MODELVIEW_PROJECTION_NV, GL_IDENTITY_NV );

then the vertex program does this:
DP4 o[HPOS].x, c[0], v[OPOS];
DP4 o[HPOS].y, c[1], v[OPOS];
DP4 o[HPOS].z, c[2], v[OPOS];
DP4 o[HPOS].w, c[3], v[OPOS];

but somehow the position that comes out is wrong, i tested other combinations for GL_MODELVIEW_PROJECTION_NV/GL_IDENTITY_NV but nothing works.

any suggestions?

i didnt solve the problem yet :-(

so i push the thread up...
or doesnt anybody use vertex programs?

thx, i looked at the sample.

it seams that my model transform is totaly ignored, because
glVertex(0,0,0) draws a point at 0,0,0 no matter where my object actually is... it draws in world space.
is there something special with glTrackMatrix??

im quite confused.