3
votes
3answers
436 views

How do I cheaply place a watermark over what's rendered in OpenGL 3.0+?

I would like some insight about how to place an image with an alpha, and a certain amount of opacity, on the top of everything that is rendered. What's the cheapest way to do that? I use C++ with a ...
0
votes
1answer
225 views

Dynamically change shader syntax with the help of C++

I'm starting with the programmable pipeline and the shaders in C++ for OpenGL 3.0+, i would love to be able to change some settings on the fly, for example replacing a function with another function, ...