Vertex shader to attach to this program

Property definitions

gamnit $ GamnitProgram :: vertex_shader
	# Vertex shader to attach to this program
	fun vertex_shader: VertexShader is abstract
lib/gamnit/programs.nit:324,2--325,44

gamnit $ GamnitProgramFromSource :: vertex_shader
	redef var vertex_shader = new VertexShader(vertex_shader_source) is lazy
lib/gamnit/programs.nit:501,2--73