glu

Very basic OpenGL texture creation code: int width, height; BYTE * data; FILE * file; // open texture data file = fopen( filename, "rb" ); if ( file == NULL ) return 0; // allocate buffer width = 256; height = 256; data =(BYTE*) malloc( width * height * 3 ); // read texture data fread( data, width * height * 3, 1, file ); fclose( file ); glGenTextures( 1, &texture ); glBindTexture( GL_TEXTURE_2D, texture ); //gluBuild2DMipmaps( GL_TEXTURE_2D, 3, width, height, GL_RGB, GL_UNSIGNED_BYTE, data ); glTexImage2D( GL_TEXTURE_2D,0, GL_RGB, width, height,0, GL_RGB, GL_UNSIGNED_BYTE, data ); free( data

I am learning OpenGL and having a problem with gluPerspective. Here is the code I use in Init() // Calculate The Aspect Ratio Of The Window // The parameters are: // (view angle, aspect ration of the width to the height, // The closest distance to the camera before it clips, // FOV, Ratio, The farthest distance before it stops drawing) gluPerspective(45.0f,(GLfloat)width/(GLfloat)height, 0.5f, 3000.0f); My scene works right.. but as soon as I go a little bit away from my objects they dissapear (As the red balls in image). : Web where I took graph from I understand that red balls are outside of

we're trying to use GLU's tesselation functions on a headless, GNU/linux server. We'd like to use PyOpenGL for that, but the problem is that it crashes on a call to gluNewTess (Segmentation fault) gdb backtrace says it's in glGetError, that makes me think that GLU tesselation needs a GL context? Or is it just some intricacy in PyOpenGL? I tried to find some information on how to initialize GL context on a headless (and virtualized) machine, no luck. Any information on these topics is appreciated. easiest: Xvfb :5 -screen 0 800x600x24 & export DISPLAY=:5 glxgears instead of glxgears, replace