glsl-shader-tutorial

3D shaders

• access the colors and textures used to draw the model or mesh
• subdividing a model into smaller groups of triangles

Vertex Shaders

• run once for each vertex given to the graphics processor
• transform each vertex's 3D position in virtual space to the 2D coordinate

Geometry Shaders

• create new graphics primitives, such as points, lines and triangles.
• geometry shaders are executed after vertex shaders

Tessellation shaders

VS & FS

• create dynamic shapes using vertex shaders
• create stunning visual effects using fragment shaders