The Book of Shaders by Patricio Gonzalez Vivo


Vertex attribute data.


attribute vec4 v_color;


attribute read-only variables containing data shared from WebGL/OpenGL environment to the vertex shader.

Because the vertex shader is executed one time for each vertex, attributes are specify per vertex data typically with information such as: space position, color, normal direction and texture coordinates of a vertex.

See Also

const, uniform, varying, Chapter 03: Uniforms