program BackendConditionals
variant (base)
  uniform mat4 uProjectionMatrix
  uniform vec4 uTint
  texture uTexture unit=0
  attribute vec2 aPosition location=0
variant DITHER
  define DITHER
  uniform mat4 uProjectionMatrix
  uniform vec4 uTint
  texture uTexture unit=0
  attribute vec2 aPosition location=0
