Hi All, I've recently encountered a very peculiar problem. Edges of the triangles where texture changes (i.e. where level of texture array...

I understand the vertices are being transformted to clipspace coords then to ndc coords then to window coords now ndc range is and window coords...

Hello, I am working on rendering vector plot. I have the following projection settings glMatrixMode(GL_PROJECTION); glLoadIdentity(); ...

Hi, I started using OpenGL about a year ago and did some tests with immediate mode rendering. After a few months I started to work with VBO's. Now...

Hi, I need to help with multi texturing. I wanna more then 4 textures and also using shader color for changing texture color(look to following...

Hi , I have a vertex shader which do not have any attributes in it #version 300 es out mediump vec4 basecolor; uniform ivec2 x1;

Hi guys, I'm using opengl with Qt and I'm working on shapefiles. Basically, I was taking the shapefile and building the map with OpengGl...

I'm running the latest linux drivers (319.49) on a 680. I have a big performance problem with glCompressedTextureSubImage3D or...

Hi all, I am a biginner in opengl, i want to write a program that i can show the environmet from all direction, i don't know how should i do?!!...

Hi, I am trying to improve my yuv->rgb convert .. Now I only draw quad (scaled, rotate, ..) in my scene with a texture with GL_NEAREST,...

Hey all, for an university project I am trying to write a program that shows a couple of white spheres that turn red one by one, each time the mouse...

I'm trying to upgrade my code to modern OpenGL, so far I've successfully got a rectangular VBO drawn on the screen and was able to get it textured...

Hi, I would like to if there is any way for me to get the number of invocation of vertex shader after rendering a model. For example in D3D11, I...

I was disappointed when I tried to use multisample textures for my shadowmaps, for 2D and cube shadowmaps. It doesn't appear there is support for...

Managing FBOs in a program with multiple contexts is painful. On Windows I create an OpenGL context on a hidden window and switch back to this when...

The title says it all. What I'm up for is making a 2d platformer game in which the zoom of the camera would be adjusted for each level. When I...

Currently transcoding and dynamic texture compression looks like this (assuming compression in fragment shader): -you should create storage stg1 for...

Hi all, I am having a bit of an odd issue with my OpenGL application. I'll first present a rough layout of the application (it's grown rather big...

I want to 2 Viewports on the screen. In first one, i have some animation and i am calling gluttimerFunc for this. In other viewport i have some text...

hi, im using SDL2, NDK, OpenGl ES 2.0 on ubunto 12.04, and when i declare variable as "uniform type or attribute type", i get this error : ...

Hello, I am trying to draw a big sphere in background, so it is supposed to look small, but for some reason its just not working. I am a newbie in...

I'm back again finally after learning more about glsl 3.3/opengl 3.3 and I've been trying to get my multi texturing to work with little success so...

Hello, I'm using VAOs with glew to render stuff. I didn't noticed first but I get an handled (!) not-interrupting exception on (only) my first call...

I read this tutorial: glprogramming.com/red/ about an year ago and then I realized it's considered "depricated" (correct me if I'm wrong). So now...

I'm using OpenGL 3.30 with Shaders (with HW instancing) but I've got a flickering effect on whole scene when I'm trying to execute occlusion queries...

I am trying to make 3D lorenz attractor but somehow not able to link it properly. My code where it is showing problem is: static void...

please help me ,this is my project to apply to teacher I can't post picture or link tell me how to post it pls T_T

Hi, I'm having some troubles in resolving integer multisampled textures. I have a simple questions which although, don't seem to get strong...

Hello. I try to make a rotatable triangle. But i have a problem #include <GL/glut.h> #include <stdlib.h> GLfloat rquad=0.0; GLfloat aci; void...

I am trying to create a textured 2D rectangle VBO; I had some code working to create a rectangular VBO (commented out) however when I changed how the...