wobbly water

files/shaders/water_fragment.glsl

@@ -231,6 +231,7 @@ void main(void)
 #if REFRACTION
     // refraction
     vec3 refraction = texture2D(refractionMap, screenCoords - screenCoordsOffset).rgb;
+    vec3 rawRefraction = refraction;
 
     // brighten up the refraction underwater
     if (cameraPos.z < 0.0)
@@ -249,6 +250,12 @@ void main(void)
     float lightScatter = clamp(dot(lVec,lNormal)*0.7+0.3, 0.0, 1.0) * clamp(dot(lR, vVec)*2.0-1.2, 0.0, 1.0) * SCATTER_AMOUNT * sunFade * clamp(1.0-exp(-sunHeight), 0.0, 1.0);
     gl_FragData[0].xyz = mix( mix(refraction,  scatterColour,  lightScatter),  reflection,  fresnel) + specular * gl_LightSource[0].specular.xyz + vec3(rainRipple.w) * 0.2;
     gl_FragData[0].w = 1.0;
+
+    // wobbly water: hard-fade into refraction texture at extremely low depth, with a wobble based on normal mapping
+    vec3 normalShoreRippleRain = texture2D(normalMap,normalCoords(UV, 2.0, 2.7, -1.0*waterTimer,  0.05,  0.1,  normal3)).rgb - 0.5
+                               + texture2D(normalMap,normalCoords(UV, 2.0, 2.7,      waterTimer,  0.04, -0.13, normal4)).rgb - 0.5;
+    float shoreOffset = clamp((realWaterDepth - (normal2.r + mix(0, normalShoreRippleRain.r, rainIntensity) + 0.35)*8), 0, 1);
+    gl_FragData[0].xyz = mix(rawRefraction, gl_FragData[0].xyz, shoreOffset);
 #else
     gl_FragData[0].xyz = mix(reflection,  waterColor,  (1.0-fresnel)*0.5) + specular * gl_LightSource[0].specular.xyz + vec3(rainRipple.w) * 0.7;
     gl_FragData[0].w = clamp(fresnel*6.0 + specular * gl_LightSource[0].specular.w, 0.0, 1.0);     //clamp(fresnel*2.0 + specular * gl_LightSource[0].specular.w, 0.0, 1.0);