3D Programming, Prototyping and Gamedev with GeeXLab
I didn’t checked all possible use cases of GLSL Hacker (a huge and actually impossible task) and some sequences of drawing instructions (render calls) can generate OpenGL errors. So if you suspect something dodgy because the rendering is not what you expect, you can check the OpenGL errors after some particular instructions.
Want to code a simple bouncing algorithm? If so, read this article and play with the GLSL Hacker demos.
Today, a small code sample (in Lua) that shows how to use the mouse to put where you want on the screen a letter with random parameters (position, scaling, orientation and color).
In this article, we saw how to use a GPU program with GLSL Hacker. Now we’re going to see how we can pass information (variables) to a GPU program.