size 320 240
vertex_shader color
fragment_shader gouraud
uniform 1 0 0 0 0 1 0 0 0 0 -1 0 0 0 0 1 
vertex_data fffnnn
v -7 -2 7 1 0 0
v 8 -6 -2 0 1 0
v 4 5 -9 0 0 1
render triangle
