Shader programming has been the largest revolution in graphics programming. OpenGL Shading Language (abbreviated: GLSL or GLslang), is a high-level shading language based on the syntax of the C programming
language.With GLSL you can execute code on your GPU (aka graphics
card). More sophisticated effects can be achieved with this technique.
Therefore, knowing how OpenGL
works and how each shader type interacts with each other, as well as
how they are integrated into the system, is imperative for graphic
programmers. This knowledge is crucial in order to be familiar with the
mechanisms for rendering 3D objects.
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