3. Shaders and Data

• Shaders get data from:

  • Vertex attributes (vertex shaders only) -- data for each vertex in a four-component vector form copied from your OpenGL program into a buffer

  • Uniforms (vertex/fragment shaders) -- a single value shared between all attributes

    • used often to pass transformation matrices to the vertex shader

  • Texture (used mostly by fragment shaders) -- specify texture data