vec2 biomeRefraction(vec2 coord){

		#ifdef BURNING_EFFECT
			const float refractionBurningMultiplier = BURNING_STRENGTH_REFRACT;
			float burningVisibility = 1.0;
			burningVisibility *= burningSmooth;
		#endif

		#if defined (NETHER) && defined NETHER_REFRACT
			const float refractionNetherMultiplier = STRENGTH_REFRACT;

				float heatNetherVisibility = 1.0;

				#if NETHER_WEATHER_HEAT == 1
						heatNetherVisibility *= biomeHasHeatSmooth3;
				#else
				#endif

				if (heatNetherVisibility < 0.1) heatNetherVisibility = 0.0;

		#endif

		#if defined (OVERWORLD) && defined DESERT_REFRACT

				const float refractionDesertMultiplier = STRENGTH_DESERT_REFRACT;

					float heatSmooth = biomeHasHeatSmooth;

					float heatDesertVisibility = clamp01(pow(eBS,4.0));
					#if DESERT_WEATHER_HEAT == 1
						heatDesertVisibility *= heatSmooth * sunVisibility * (1.0-rainStrength);
					#elif DESERT_WEATHER_HEAT == 2
						heatDesertVisibility *= heatSmooth * sunVisibility;
					#elif DESERT_WEATHER_HEAT == 3
						heatDesertVisibility *= heatSmooth * (1.0-rainStrength);
					#elif DESERT_WEATHER_HEAT == 4
						heatDesertVisibility *= heatSmooth;
					#endif
					if (heatDesertVisibility < 0.1) heatDesertVisibility = 0.0;
		#endif


		#if defined (OVERWORLD) && defined MESA_REFRACT
				const float refractionMesaMultiplier = STRENGTH_MESA_REFRACT;

				float heatSmooth2 = biomeHasHeatSmooth2;

					float heatMesaVisibility = clamp01(pow(eBS,4.0));
					#if MESA_WEATHER_HEAT == 1
						heatMesaVisibility *= heatSmooth2 * sunVisibility * (1.0-rainStrength);
					#elif MESA_WEATHER_HEAT == 2
						heatMesaVisibility *= heatSmooth2 * sunVisibility ;
					#elif MESA_WEATHER_HEAT == 3
						heatMesaVisibility *= heatSmooth2 * (1.0-rainStrength);
					#elif MESA_WEATHER_HEAT == 4
						heatMesaVisibility *= heatSmooth2;
					#endif
					if (heatMesaVisibility < 0.1) heatMesaVisibility = 0.0;
		#endif


		#ifdef BURNING_EFFECT

			vec2 aspectcorrectBurn=vec2(aspectRatio, 1.0);

			float noiseBurn     =texture2D(noisetex, coord.st * aspectcorrectBurn * 0.008 - vec2(0.0, frameTimeCounter * 0.009)).x;
			      noiseBurn    +=texture2D(noisetex, coord.st * aspectcorrectBurn * 0.007 - vec2(0.0, frameTimeCounter * 0.009)).x;
			float burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			      coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex,coord.st * aspectcorrectBurn * 0.007 - vec2(0.0, frameTimeCounter * 0.008)).x;
			noiseBurn    +=texture2D(noisetex,coord.st * aspectcorrectBurn * 0.006 - vec2(0.0, frameTimeCounter * 0.008)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex,coord.st * aspectcorrectBurn * 0.006 - vec2(0.0, frameTimeCounter * 0.007)).x;
			noiseBurn    +=texture2D(noisetex,coord.st * aspectcorrectBurn * 0.005 - vec2(0.0, frameTimeCounter * 0.007)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex, coord.st * aspectcorrectBurn * 0.005 - vec2(0.0, frameTimeCounter * 0.006)).x;
			noiseBurn    +=texture2D(noisetex, coord.st * aspectcorrectBurn * 0.004 - vec2(0.0, frameTimeCounter * 0.006)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex, coord.st * aspectcorrectBurn * 0.004 - vec2(0.0, frameTimeCounter * 0.005)).x;
			noiseBurn    +=texture2D(noisetex, coord.st * aspectcorrectBurn * 0.003 - vec2(0.0, frameTimeCounter * 0.005)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex, coord.st * aspectcorrectBurn * 0.003 - vec2(0.0, frameTimeCounter * 0.004)).x;
			noiseBurn    +=texture2D(noisetex, coord.st * aspectcorrectBurn * 0.002 - vec2(0.0, frameTimeCounter * 0.004)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

			noiseBurn     =texture2D(noisetex, coord.st * aspectcorrectBurn * 0.002 - vec2(0.0, frameTimeCounter * 0.003)).x;
			noiseBurn    +=texture2D(noisetex, coord.st * aspectcorrectBurn * 0.001 - vec2(0. , frameTimeCounter * 0.003)).x;
			burningRefrac =clamp01((noiseBurn - 1.0) * 4.0);
			coord     -=vec2(0.0, coord.y) * refractionBurningMultiplier * burningRefrac * burningVisibility;

		#endif

		#if defined (NETHER) && defined NETHER_REFRACT

			vec2 aspectcorrectNether=vec2(aspectRatio, 1.0);

			float noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.008 - vec2(0.0, frameTimeCounter * 0.007)).x;
			      noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.007 - vec2(0.0, frameTimeCounter * 0.007)).x;
			float netherfrac =clamp01((noiseNether-1.)*5.0);
			      coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.007 - vec2(0.0, frameTimeCounter * 0.006)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.006 - vec2(0.0, frameTimeCounter * 0.006)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.006 - vec2(0.0, frameTimeCounter * 0.005)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.005 - vec2(0.0, frameTimeCounter * 0.003)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.005 - vec2(0.0, frameTimeCounter * 0.004)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.004 - vec2(0.0, frameTimeCounter * 0.004)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.004 - vec2(0.0, frameTimeCounter * 0.003)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.003 - vec2(0.0, frameTimeCounter * 0.003)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.003 - vec2(0.0, frameTimeCounter * 0.002)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.002 - vec2(0.0, frameTimeCounter * 0.002)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

			noiseNether     =texture2D(noisetex, coord.st * aspectcorrectNether * 0.002 - vec2(0.0, frameTimeCounter * 0.001)).x;
			noiseNether    +=texture2D(noisetex, coord.st * aspectcorrectNether * 0.001 - vec2(0.0, frameTimeCounter * 0.001)).x;
			netherfrac =clamp01((noiseNether - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionNetherMultiplier * netherfrac * heatNetherVisibility;

		#endif


		#if defined (OVERWORLD) && defined DESERT_REFRACT

			vec2 aspectcorrectDesert=vec2(aspectRatio, 1.0);

			float noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.009 - vec2(0.0, frameTimeCounter * 0.009)).x;
			      noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.008 - vec2(0.0, frameTimeCounter * 0.009)).x;
			float desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			      coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.008 - vec2(0.0, frameTimeCounter * 0.008)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.007 - vec2(0.0, frameTimeCounter * 0.008)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.007 - vec2(0.0, frameTimeCounter * 0.007)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.006 - vec2(0.0, frameTimeCounter * 0.007)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.006 - vec2(0.0, frameTimeCounter * 0.006)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.005 - vec2(0.0, frameTimeCounter * 0.006)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.005 - vec2(0.0, frameTimeCounter * 0.005)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.004 - vec2(0.0, frameTimeCounter * 0.005)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.004 - vec2(0.0, frameTimeCounter * 0.004)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.003 - vec2(0.0, frameTimeCounter * 0.004)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.003 - vec2(0.0, frameTimeCounter * 0.003)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.002 - vec2(0.0, frameTimeCounter * 0.003)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

			noiseDesert      =texture2D(noisetex, coord.st * aspectcorrectDesert * 0.002 - vec2(0.0, frameTimeCounter * 0.002)).x;
			noiseDesert     +=texture2D(noisetex, coord.st * aspectcorrectDesert * 0.001 - vec2(0.0, frameTimeCounter * 0.002)).x;
			desertfrac =clamp01((noiseDesert - 1.0) * 5.0);
			coord     -=vec2(0.0, coord.y) * refractionDesertMultiplier * desertfrac * heatDesertVisibility;

		#endif

		#if defined (OVERWORLD) && defined MESA_REFRACT

			vec2 aspectcorrectMesa=vec2(aspectRatio, 1.0);

			float noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.009 - vec2(0.0, frameTimeCounter * 0.009)).x;
			      noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.008 - vec2(0.0, frameTimeCounter * 0.009)).x;
			float mesafrac =clamp01((noiseMesa -1.)* 5.0);
			      coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.008 - vec2(0.0, frameTimeCounter * 0.008)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.007 - vec2(0.0, frameTimeCounter * 0.008)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.007 - vec2(0.0, frameTimeCounter * 0.007)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.006 - vec2(0.0, frameTimeCounter * 0.007)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.006 - vec2(0.0, frameTimeCounter * 0.006)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.005 - vec2(0.0, frameTimeCounter * 0.006)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.005 - vec2(0.0, frameTimeCounter * 0.005)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.004 - vec2(0.0, frameTimeCounter * 0.005)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.004 - vec2(0.0, frameTimeCounter * 0.004)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.003 - vec2(0.0, frameTimeCounter * 0.004)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.003 - vec2(0.0, frameTimeCounter * 0.003)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.002 - vec2(0.0, frameTimeCounter * 0.003)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

			noiseMesa   =texture2D(noisetex, coord.st * aspectcorrectMesa * 0.002 - vec2(0.0, frameTimeCounter * 0.002)).x;
			noiseMesa  +=texture2D(noisetex, coord.st * aspectcorrectMesa * 0.001 - vec2(0.0, frameTimeCounter * 0.002)).x;
			mesafrac =clamp01((noiseMesa - 1.0) * 5.0);
			coord   -=vec2(0.0, coord.y) * refractionMesaMultiplier * mesafrac * heatMesaVisibility;

		#endif

		return coord;
	}