#ifdef fsh
	#ifdef Global
		/* #### Adjustable Variables #### */

		#define nightEye
			#define ndeSat 15.0 //[30.0 29.0 28.0 27.0 26.0 25.0 24.0 23.0 22.0 21.0 20.0 19.0 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0]

		#define UNDERWATER_REFRACTION
			#define UNDERWATER_REFRACTION_AMOUNT 0.5 //[0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0]
			#define UNDERWATER_REFRACTION_ANIMATION_SPEED 1.0 //[0.0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0]

		/* #### Variables #### */

			uniform sampler2D colortex0;
			uniform sampler2D depthtex0;

			uniform float frameTimeCounter;

			varying vec2 texcoord;

			uniform int isEyeInWater;
		/* #### Functions #### */

		#ifdef nightEye
			void getNightDesaturation(inout vec3 color) {
				float weight = ndeSat;

				color = pow(color, vec3(2.2)); // convert from gamma to linear

				float brightness = dot(color, vec3(0.2627, 0.6780, 0.0593));
				float amount = 0.01 / (pow(brightness * weight, 2.0) + 0.01);
				vec3 desatColor = mix(color, vec3(brightness), vec3(0.9)) * vec3(0.2, 1.0, 2.0);

				color = mix(color, desatColor, amount);

				color = pow(color, vec3(1.0 / 2.2)); // convert from linear to gamma
			}
		#endif

		#ifdef UNDERWATER_REFRACTION
			vec2 UnderwaterRefraction(in vec2 coord) {
				if(isEyeInWater == 1) {
					vec2 refraction = vec2(sin(frameTimeCounter * 1.75 * UNDERWATER_REFRACTION_ANIMATION_SPEED + texcoord.x * 50.0 + texcoord.y * 25.0), cos(frameTimeCounter * 2.5 * UNDERWATER_REFRACTION_ANIMATION_SPEED + texcoord.y * 100.0 + texcoord.x * 25.0));
					return coord + refraction * 0.002 * UNDERWATER_REFRACTION_AMOUNT;
				}
				return coord;
			}
		#endif

		/* #### Includes #### */

			#include "/lib/Global/FilmGrain.glsl"

		/* #### VoidMain #### */

		void main() {
			vec2 coord = texcoord.st;

			#ifdef UNDERWATER_REFRACTION
				coord = UnderwaterRefraction(coord);
			#endif

			vec4 color = vec4(texture2D(colortex0, coord).rgb, 1.0);
			
			#ifdef FGrain
				FilmGrain(color.rgb);
			#endif

			#ifdef nightEye
				getNightDesaturation(color.rgb);
			#endif
			
			gl_FragData[0] = color;
		}
	#endif


	#ifdef Nether
		/* #### Adjustable Variables #### */

			#define nightEye
				#define ndeSat 15.0 //[30.0 29.0 28.0 27.0 26.0 25.0 24.0 23.0 22.0 21.0 20.0 19.0 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0]

		/* #### Variables #### */

			uniform sampler2D colortex0;
			uniform sampler2D depthtex0;

			uniform float frameTimeCounter;

			varying vec2 texcoord;

		/* #### Functions #### */

		#ifdef nightEye
			void getNightDesaturation(inout vec3 color) {
				float weight = ndeSat;

				color.rgb = pow(color.rgb, vec3(2.2)); // convert from gamma to linear

				float brightness = dot(color.rgb, vec3(0.2627, 0.6780, 0.0593));
				float amount = 0.01 / (pow(brightness * weight, 2.0) + 0.01);
				vec3 desatColor = mix(color, vec3(brightness), vec3(0.9)) * vec3(0.2, 1.0, 2.0);

				color = mix(color, desatColor, amount);

				color.rgb = pow(color.rgb, vec3(1.0 / 2.2)); // convert from linear to gamma
			}
		#endif

		/* #### Includes #### */

		#include "/lib/Global/FilmGrain.glsl"

		/* #### VoidMain #### */

		void main() {

			vec4 color = vec4(texture2D(colortex0, texcoord).rgb, 1.0);

			#ifdef FGrain
				FilmGrain(color.rgb);
			#endif

			#ifdef nightEye
				getNightDesaturation(color.rgb);
			#endif

			gl_FragData[0] = color;
		}
	#endif
#endif