turning reflection into sun or light direction

Shaders/water.frag

@@ -1,10 +1,8 @@
-
 uniform sampler2D water_normalmap;
 uniform sampler2D water_reflection;
 uniform sampler2D water_refraction;
 uniform sampler2D water_dudvmap;
 uniform sampler2D water_depthmap;
-//uniform vec4 waterColor, waterDepth;
 
 vec4 waterColor = vec4(0.0,0.2,1.0,1.0);
 vec4 waterDepth = vec4(0.0,0.2,1.0,1.0);
@@ -14,6 +12,7 @@ varying vec4 waterTex1; //moving texcoords
 varying vec4 waterTex2; //moving texcoords
 varying vec4 waterTex3; //for projection
 varying vec4 waterTex4; //viewts
+varying float fogCoord;
 
 //unit 0 = water_reflection
 //unit 1 = water_refraction
@@ -33,6 +32,8 @@ const vec4 ofive = vec4(0.5,0.5,0.5,1.0);
 
 const float exponent = 64.0;
 
+float fogFactor = exp(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord);
+
 vec4 lightTS = normalize(waterTex0);
 vec4 viewt = normalize(waterTex4);
 vec4 disdis = texture2D(water_dudvmap, vec2(waterTex2 * tscale));
@@ -68,7 +69,7 @@ wdepth = vec4(pow(wdepth.x, 4.0));
 vec4 invdepth = 1.0 - wdepth;
 
 //calculate specular highlight
-vec4 vRef = normalize(reflect(-lightTS, vNorm));
+vec4 vRef = normalize(reflect(lightTS, vNorm));
 float stemp =max(0.0, dot(viewt, vRef) );
 stemp = pow(stemp, exponent);
 vec4 specular = vec4(stemp);
@@ -87,5 +88,10 @@ refl *= fres;
 //add reflection and refraction
 tmp = refr + refl;
 
-gl_FragColor = tmp + specular;
+if(gl_Fog.density == 1.0)
+	fogFactor=1.0;
+
+vec4 finalColor = tmp + specular;
+
+gl_FragColor = mix(gl_Fog.color,finalColor, fogFactor);
 }

Shaders/water.vert

@@ -1,48 +1,47 @@
-
 varying vec4 waterTex0;
 varying vec4 waterTex1;
 varying vec4 waterTex2;
 varying vec4 waterTex3;
 varying vec4 waterTex4;
-uniform vec4 viewpos, lightpos;
-uniform float time, time2;
-//unit 0 = water_reflection
-//unit 1 = water_refraction
-//unit 2 = water_normalmap
-//unit 3 = water_dudvmap
-//unit 4 = water_depthmap
+uniform float osg_SimulationTime;
+varying vec3 lightVec;
+varying float fogCoord;
+varying vec4 ecPosition;
 
 void main(void)
 {
-vec4 mpos, temp;
+
+lightVec = normalize(gl_LightSource[0].position.xyz);
+ecPosition = gl_ModelViewMatrix * gl_Vertex;
+vec4 lightpos = vec4(lightVec, 1.0);
+
+vec4 temp;
 vec4 tangent = vec4(1.0, 0.0, 0.0, 0.0);
 vec4 norm = vec4(0.0, 1.0, 0.0, 0.0);
 vec4 binormal = vec4(0.0, 0.0, 1.0, 0.0);
 
-mat4 mvp = gl_ModelViewProjectionMatrix;
-mat4 mtx = gl_TextureMatrix[0];
-
-temp = viewpos - gl_Vertex;
+temp = gl_ModelViewMatrix * gl_Vertex;
 waterTex4.x = dot(temp, tangent);
 waterTex4.y = dot(temp, binormal);
 waterTex4.z = dot(temp, norm);
 waterTex4.w = 0.0;
 
-temp = lightpos - gl_Vertex;
+temp = lightpos;
 waterTex0.x = dot(temp, tangent);
 waterTex0.y = dot(temp, binormal);
 waterTex0.z = dot(temp, norm);
 waterTex0.w = 0.0;
 
-mpos = mvp * gl_Vertex;
 
-vec4 t1 = vec4(0.0, -time, 0.0,0.0);
-vec4 t2 = vec4(0.0, -time2, 0.0,0.0);
+vec4 t1 = vec4(0.0, osg_SimulationTime*0.035217, 0.0,0.0);
+vec4 t2 = vec4(0.0, osg_SimulationTime*-0.0212, 0.0,0.0);
 
 waterTex1 = gl_MultiTexCoord0 + t1;
 waterTex2 = gl_MultiTexCoord0 + t2;
 
-waterTex3 = mpos;
+waterTex3 = gl_MultiTexCoord0;
+
+fogCoord = abs(ecPosition.z / ecPosition.w);
 
 gl_Position = ftransform();
 }