Rendering

Polygon Shading

Implementation

OpenGL

Enable light sources

glEnable(GL_LIGHT0)

Light properties
{r g b a}
Glfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0}

glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse)

Light position
{x y z w}
Glfloat light_position[] = {-1.0, 1.0, -1.0, 1.0}

glLightfv(GL_LIGHT0, GL_POSITION, light_position)