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...

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

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...

I like Euler rotation based on degrees so I can keyframe an animation of a large number of degrees, like 1000, and get multiple full 360-degree...

I would like to render instanced geometry with a per-instance texture. To do so, I want to create a Vertex Attrib (that is consumed in a...

Hello every body, I need to find the convex hull of a set of points. Could any one help me how that can be done. Lastly, I need to find the boundary...

I probably already have a solution to the math behind moving the scene towards the camera, but it stops rendering when translated much at all and...

Hi, I Need to display contours for a given grid. The grid what I have is triangulated. I also have an algorithm for generating contours for a...

Hi, I use a FBO and MRT as following : - Texture "0" is attached to my FBO's COLOR_BUFFER_0 - Texture "1" is attached to my FBO's...

To change the scene-graph during runtime I'm using several working threads which disable the render-loop and update the gl-context (load/unload...

Hallo I implemented a multiple post processing shader support for my game, but now, i have the following bug: When i use and render my post...

I am writing simple GUI library for OpenGL. There are lot's of tutorials how to render text, and even more about primitives. Currenly I am...

A short while ago there was a thread on measuring performance of different shader subroutines. I have been having a look at nVidia NVPerfKit sdk. It...

Hi, I am confused :confused: with term 'Orientation' and 'Rotation'.anyone please explain .Thanks in advance........

Hello all, What I'm trying to do simply is creating a virtual map by using opengl based on the concept of simultaneous localization and mapping....

I need to repeatedly display an image--say, one frame from a video stream--on a monitor at 120hz. I think this is an issue of vsync. I'm wondering...

Hello, I'm learning about bump mapping and I've made this code in a DOJO class: uniform sampler2D sampler2d0; uniform sampler2D sampler2d1;...

Hello all I'm trying to use vbos in my OpenGL application and a had some difficulties. I read a tutorial(www.opengl-tutorial.org) and now I'm trying...

I've run across a change in the Nvidia 319/320 series drivers with regards to std140/packed uniform buffer objects that is causing havoc in our...

EDIT: I fixed it with a few hours of google searching. If anyone could delete/lock the thread that'd be great :) (I hadn't declared a specific...

hey, it's been a while since i asked here some question about implementation of something... and this is the case, cause i'm puzzled. before trying...

Hello guys, I'm writing a simple code (using gedit on Ubuntu) in C to import a 3d model (.obj). In my code I'm using the library "glm.h" and...

Hey Guys, I'm trying to learn GLSL but i'm getting stucked with a lot of basic matrix transformations and gl_ properties . Did you have some nice...

Hi, I use 2 FBO to realize AR with OpenCV. So I do my rendering stuff, and call glReadPixels to load in my cv::Mat. -The first is to warp...

I am now working on import a 3ds model in my application, but I have a problem. I import the model and show it, but the model have no edge. It just a...

i have problem with bitmap, when i run my code, the console show me the next error: undefined reference to `LoadDIBitmap' the library is defined in...

I've been attempting to code a normal Gaussian Blur shader which scales the image down to half the size in the vertex shader. The scaling works, but...

I want to write a program with opengl to project a final rendered image to a scene, which the scene and the image has the same camera view. I want...

Hi I'm trying to double buffer an animated image being written to an X Window on RHEL 5.0 using xdbe and glDrawPixels I'm getting a...