4. Shader is a program

• Shader has source code (plain text file):

  • Cg (C for Graphics) -- shading language developed by Nvidia and Microsoft -- DirectX

  • HLSL (High-level shader language) -- developed by Microsoft -- Direct3D

  • GLSL -- OpenGL Shading Language -- very C-like

• Your program needs at least two shaders (vertex and fragment), but can use many more

• Shaders are compiled into a binary program in memory