• Advertisement

Shane Thompson

Member
  • Content count

    1
  • Joined

  • Last visited

Community Reputation

103 Neutral

About Shane Thompson

  • Rank
    Newbie
  1. Issue learning OpenGL

    Hi guys, Recently I came across a site (a sub-domain of this) which contains some (rather old-ish) tutorials on OpenGL. I am doing this tutorial: [url="http://nehe.gamedev.net/tutorial/your_first_polygon/13002/"]http://nehe.gamedev...._polygon/13002/[/url] which is an extension upon the last. I had no issues with the last. However I get to tutorial 2 and it does not draw. Here is what I believe is the relevant code: [CODE] int DrawGLScene(GLvoid) { // Here's where we do all the drawing glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear the screen and the depth buffer glMatrixMode(GL_PROJECTION); // I found some pages said I should do this? glLoadIdentity(); // Reset the current Modelview Matrix glTranslatef(1.5, 0.0, 6.0); // Move left 1.5 and back 6.0 glBegin(GL_TRIANGLES); // Draw using triangles glVertex3f( 0.0f, 1.0f, 0.0f); // Top glVertex3f(-1.0f, -1.0f, 0.0f); // Bottom left glVertex3f( 1.0f, -1.0f, 0.0f); // Bottom right glEnd(); // Finished the triangle glBegin(GL_QUADS); // Draw using squares glVertex3f(-1.0f, 1.0f, 0.0f); // Top left glVertex3f( 1.0f, 1.0f, 0.0f); // Top right glVertex3f( 1.0f, -1.0f, 0.0f); // Bottom right glVertex3f(-1.0f, -1.0f, 0.0f); // Bottom left glEnd(); // Finished the square return true; // Everything went OK. }[/CODE] It simply appears to do nothing. I have been googling around, however there does not seem to be that much information on it, or I am looking in the wrong place. I can confirm this function is being run - I placed a breakpoint in the function and it breaks fine. However all I am presented with is a blank screen. Any tips? Thanks, shanept [b]EDIT[/b] I have gone through my code again and have found my errors. They were simply a few positive numbers where they should have been negative, and a missing translate between the two objects.
  • Advertisement