Think I found the answer, it's the missing glFlush(), right? Radeons
flush automaticly and nvidia need the request to flush. :D
Thanks anyway,
Best regards,
Paulo Matos
On Wed, 2003-11-26 at 20:49, Paulo Jorge de Oliveira Cantante de Matos
wrote:
> Hi all,
>
> The code included below in a computer running radeon shows up a
> projection of a cube, in a computer running nvidia shows up nothing. I'd
> please ask you to run it and reply to the list saying if it happens to
> you too. If you know why please explain me... I'm really not
> understanding why.
>
> --------------------- Code: compiled with:
> -----gcc main.c -o test -lGL -lGLU -lglut
> ---------------------
> #include <stdio.h>
> #include <GL/glut.h>
> #include "snapshot.h"
>
>
> void init(void) {
> glClearColor(0.0, 0.0, 0.0, 0.0);
>
> }
>
> void display(void) {
>
> glClear(GL_COLOR_BUFFER_BIT);
>
> glColor3f(1.0,1.0,1.0);
> glutWireCube(2.0);
>
> }
>
> void keyboard(unsigned char key, int x, int y) {
>
>
> switch(key) {
> case 27:
> exit(0);
> break;
> case 's':
> case 'S':
> break;
> default:
> break;
> }
> }
>
> void reshape(GLsizei w, GLsizei h) {
>
> //prevent divide by 0
> if(h == 0) h = 1;
>
> glViewport(0, 0, w, h);
> glMatrixMode(GL_PROJECTION);
> glLoadIdentity();
>
> //Establish clipping volume (left, right, bottom, top, near, far)
> gluPerspective(60.0, (GLdouble) w/ (GLdouble) h, 3.0, 6.0);
> gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
>
> glMatrixMode(GL_MODELVIEW);
> glLoadIdentity();
> }
>
> int main(int argc, char *argv[]) {
>
> glutInit(&argc, argv);
> glutInitDisplayMode(GLUT_RGB);
> glutInitWindowSize(250, 250);
> glutInitWindowPosition(100, 100);
> glutCreateWindow("EcoSim");
> init();
> glutReshapeFunc(reshape);
> glutDisplayFunc(display);
> glutKeyboardFunc(keyboard);
> glutMainLoop();
>
> return 0;
> }
>
>
> ----------------------------
>
> Best regards,
--
Paulo J. Matos : pocm [_at_] mega . ist . utl . pt
Instituto Superior Tecnico - Lisbon
Computer and Software Eng. - A.I.
- > http://mega.ist.utl.pt/~pocm
---
-> God had a deadline...
So, he wrote it all in Lisp!
--
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