As of OpenGL 3.x, primitive restart was added where when enabled if a particular user defined index was encountered, then the primitive creation was...

Hello everybody, I have dealed with OpenGL 3.3 by the help of my old experiences in former versions of it for a few days and with long breaks. I...

This topic is actually a follow-on of an earlier posting of mine "Generating pipelines..." where I learned from thokra's responses how to generate...

I'm conceptualising a good approach to rendering as many disjointed pieces of geometry with a single draw call in OpenGL, and the wall I'm up against...

Greetings: I am using core 4.3. Masochistic maybe but your help would be appreciated with the following:-) I have two different geometric objects...

Hi all, I am implementing hdr light adaptation, until I found a small technical problem. I need to calculate this value inside a fragment shader...

The Specification defines: gl_VertexID is a vertex language input variable that holds an integer index for the vertex. The index is impliclty...

Hello, I would like to read a jpeg file and display the pixel using glColor3f. I have extracted the pixel dimension from the image. Now my quetion...

i have been trying to use glVertexAttribP with GL_UNSIGNED_INT_2_10_10_10_REV but stuck up at some point. here is my code GLuint...

Hi, I have developed some programs that are working well with 3D stereoscopic view. But I am in trouble with a program which is not originally mine...

Now that OpenGL's debug context concept is a bit more well-defined (thanks to language in KHR_debug and the like), let's expand on this. NVIDIA...

The description of the gluLookAt is as follows: Let F=centerX-eyeXcenterY-eyeYcenterZ-eyeZ Let UP be the vector upXupYupZ. Then normalize as...

I've been following some tutorials about setting a simple source of light, but I still can't make it :S let's say I have a simple surface in 3D ...

I learned somewhat recently about this behavior described in the GL_ARB_multisample spec: I'm working in an older fixed-function codebase and...

I am trying to create a program that loads an image into memory and doesn't crash, but it seems that whenever I load an image the OpenGL context...

Hello folks, I am developing a library to interface graphical displays (TFTs) and touchscreens with microcontrollers, also providing a simple GUI...

Hy, I didn't know if this is the right forum or the right category to post this thread, so please move this thread if necessary, or point me to a...

My code is breaking when I use the glMatrixMode( GL_PROJECTION ) command, and I think this is because the context is breaking when I try to load a...

On the first glance the following question looks silly, but after trying to answer on it I realized it is quite difficult (or even impossible). ...

hello everyone....this may be a very basic question but I was wondering that whether the sequence in which we register our glut callbacks...

I can't seem to figure out how to use glimg to find the width and height of an image that has been loaded into an image set. I know it uses the...

This is a cross-post from game-dev because it seems more general to graphical programming than game development. I have written a simple .obj...

Currently, the alpha in color blending has far more flexible roles that the other channels, RGB. This is actually 2 parts: First part, a new...

I'm on Windows 7 and using VC++ 2010. I'm trying to load and render a mesh using VBOs. I've checked that all the indices and vertex values are...

Hello, IDE: code::blocks 10.05 compiler: gnu gcc code: #define GLEW_STATIC #include <GL/glew.h>

Greetings: I am learning shader subroutines and wrote a toy program along the lines of one in the shading language cookbook (I also referred to the...

hi, Have been trying for a while now to do this, but it doesn't seem to be working as I wish: I have the following points (as an example);...

Hey all. I've been searching for hours on how to load an image and apply a texture to my particles with no resolve. The following is my code which...

Well I've pretty much got this figured out now I think except in this tutorial I'm following the author leaves out a vital detail; For the Triangle...

Hi, i'm trying to compile a simple vertex shader, but I keep getting this error: "ERROR: 0:2: Invalid qualifiers 'in' in global variable context"....