forked from 0ad/0ad
69 lines
2.7 KiB
GLSL
69 lines
2.7 KiB
GLSL
#version 110
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// This is a lightened version of water_high.fs that generates only the "n" vector (ie the normal) and the foam coverage.
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// It's thus uncommented.
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uniform float waviness;
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uniform vec2 screenSize;
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uniform float time;
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varying vec3 worldPos;
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varying vec4 waterInfo;
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uniform float mapSize;
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uniform sampler2D normalMap;
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uniform sampler2D normalMap2;
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/*#if USE_FOAM || USE_WAVES
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uniform sampler2D Foam;
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uniform sampler2D waveTex;
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#endif*/
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uniform vec4 waveParams1; // wavyEffect, BaseScale, Flattenism, Basebump
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uniform vec4 waveParams2; // Smallintensity, Smallbase, Bigmovement, Smallmovement
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void main()
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{
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// Fix the waviness for local wind strength
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float fwaviness = waviness * ((0.15+waterInfo.r/1.15));
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float wavyEffect = waveParams1.r;
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float baseScale = waveParams1.g;
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float flattenism = waveParams1.b;
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float baseBump = waveParams1.a;
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float smallIntensity = waveParams2.r;
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float smallBase = waveParams2.g;
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float BigMovement = waveParams2.b;
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float SmallMovement = waveParams2.a;
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// This method uses 60 animated water frames. We're blending between each two frames
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// TODO: could probably have fewer frames thanks to this blending.
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// Scale the normal textures by waviness so that big waviness means bigger waves.
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vec3 ww1 = texture2D(normalMap, (gl_TexCoord[0].st + gl_TexCoord[0].zw * BigMovement*waviness/10.0) * (baseScale - waviness/wavyEffect)).xzy;
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vec3 ww2 = texture2D(normalMap2, (gl_TexCoord[0].st + gl_TexCoord[0].zw * BigMovement*waviness/10.0) * (baseScale - waviness/wavyEffect)).xzy;
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vec3 smallWW = texture2D(normalMap, (gl_TexCoord[0].st + gl_TexCoord[0].zw * SmallMovement*waviness/10.0) * baseScale*3.0).xzy;
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vec3 smallWW2 = texture2D(normalMap2, (gl_TexCoord[0].st + gl_TexCoord[0].zw * SmallMovement*waviness/10.0) * baseScale*3.0).xzy;
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ww1 = mix(ww1, ww2, mod(time * 60.0, 8.0) / 8.0);
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smallWW = mix(smallWW, smallWW2, mod(time * 60.0, 8.0) / 8.0) - vec3(0.5);
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ww1 += vec3(smallWW.x,0.0,smallWW.z)*(fwaviness/10.0*smallIntensity + smallBase);
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ww1 = mix(smallWW + vec3(0.5,0.0,0.5), ww1, waterInfo.r);
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// Flatten them based on waviness.
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vec3 n = normalize(mix(vec3(0.0,1.0,0.0),ww1 - vec3(0.5,0.0,0.5), clamp(baseBump + fwaviness/flattenism,0.0,1.0)));
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float foamFact1 = texture2D(normalMap, (gl_TexCoord[0].st) * 0.3).a;
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float foamFact2 = texture2D(normalMap2, (gl_TexCoord[0].st) * 0.3).a;
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float foamFact = mix(foamFact1, foamFact2, mod(time * 60.0, 8.0) / 8.0);
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float foamUniversal1 = texture2D(normalMap, (gl_TexCoord[0].st) * 0.05).a;
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float foamUniversal2 = texture2D(normalMap2, (gl_TexCoord[0].st) * 0.05).a;
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float foamUniversal = mix(foamUniversal1, foamUniversal2, mod(time * 60.0, 8.0) / 8.0);
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gl_FragColor.rgba = vec4((n + 1.0)/2.0,foamFact*foamUniversal*30.0);
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}
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