Top "Opengl" questions

What's the concept of and differences between Framebuffer and Renderbuffer in OpenGL?

I'm confused about concept of Framebuffer and Renderbuffer. I know that they're required to render, but I want to understand …

opengl rendering framebuffer

Row-major vs Column-major confusion

I've been reading a lot about this, the more I read the more confused I get. My understanding: In row-major …

c opengl matrix linear-algebra

glewInit() Failed, OpenGL App

I'm trying to build an OpenGL App with glew/glfw. I've downloaded the binaries, placed them in the root of …

opengl glew

Passing a list of values to fragment shader

I want to send a list of values into a fragment shader. It is a possibly large (couple of thousand …

opengl glsl

How to take screenshot in OpenGL

How to take a screenshot of an OpenGL window in C++ and save it to file. I found the glReadPixels() …

c++ opengl save screenshot glreadpixels

How do I get the current color of a fragment?

I'm trying to wrap my head around shaders in GLSL, and I've found some useful resources and tutorials, but I …

opengl shader glsl fragment-shader

Installation of all OpenGL libraries for development in Ubuntu 11.10

I've got a just installed ubuntu 11.10. I follow the first answer in this question. I installed: freeglut3 freeglut3-dev igor@…

c++ c opengl ubuntu glew

No OpenGL context found in the current thread, how do I fix this error?

I'm working on a card game, and currently have a good foundation but I'm running into an error when I …

java opengl lwjgl slick2d

Multiple textures in GLSL - only one works

My problem is getting more than one texture accessible in a GLSL shader. Here's what I'm doing: Shader: uniform sampler2…

opengl textures glsl

How does the centripetal Catmull–Rom spline work?

From this site, which seems to have the most detailed information about Catmull-Rom splines, it seems that four points are …

c++ opengl graphics directx spline