working 6-stage fragments

src/shaders.h

@@ -3,9 +3,9 @@
 #ifndef SHADERS_H
 #define SHADERS_H
 
-ShaderProgram init_program(File fragment_shader, Context context);
+ShaderProgram init_program(File *fragment_shader, Context context);
 
-void update_program(ShaderProgram program, File fragment_shader);
+void update_program(ShaderProgram program, File *fragment_shaders, int i);
 
 void apply_program(ShaderProgram program, Context context);