################################################################################
# FXAA

(fn fxaa-init ()
	(program prg-fxaa "fxaa.f.glsl")
	(pipeline pl-fxaa prg-fullscreen prg-fxaa)

	(sampler smp-fxaa
		(sampling linear)
		(wrapping clamp-border))

	(input fxaa-subpixel .5)
	(input fxaa-et .166)
	(input fxaa-et-min .0833)

	(ui-overrides
		(section "Post-processing"
			(section "FXAA"
				(float "Sub-pixel quality" fxaa-subpixel
					(min 0) (max 1) (slider))
				(float "Edge threshold" fxaa-et
					(min .063) (max .333) (slider))
				(float "Edge threshold min." fxaa-et-min
					(min .0312) (max .0833) (decimals 4)
					(slider))
			)
		)
	)
)

(fn fxaa-render (in-image)
	(profiling "FXAA"
		(uniforms-i prg-fxaa 0 0)
		(uniforms prg-fxaa 1
			$vp-x $vp-y $vp-width $vp-height)

		(main-output)
		(viewport 0 0 $width $height)
		(clear 0 0 0 0)

		(use-pipeline pl-fxaa)
		(use-texture 0 in-image smp-fxaa)
		(uniforms prg-fxaa 2
			(get-input fxaa-subpixel)
			(get-input fxaa-et)
			(get-input fxaa-et-min))
		(viewport $vp-x $vp-y $vp-width $vp-height)
		(fullscreen)
	)
)


# vim: syntax=demo-srd