1 files changed, 60 insertions, 34 deletions

diff --git a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
index 4d555b566a..79bffab745 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
@@ -23,20 +23,21 @@
  * $/LicenseInfo$
  */
  
-
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
 
 vec3 scaleSoftClip(vec3 inColor);
 vec3 atmosTransport(vec3 inColor);
-vec3 applyWaterFog(vec4 inColor);
 
-uniform sampler2D diffuseMap;
 uniform sampler2D bumpMap;   
 uniform sampler2D screenTex;
 uniform sampler2D refTex;
 
 uniform float sunAngle;
 uniform float sunAngle2;
-uniform float scaledAngle;
 uniform vec3 lightDir;
 uniform vec3 specular;
 uniform float lightExp;
@@ -47,69 +48,94 @@ uniform vec3 normScale;
 uniform float fresnelScale;
 uniform float fresnelOffset;
 uniform float blurMultiplier;
-uniform vec4 fogCol;
+
 
 //bigWave is (refCoord.w, view.w);
-varying vec4 refCoord;
-varying vec4 littleWave;
-varying vec4 view;
+VARYING vec4 refCoord;
+VARYING vec4 littleWave;
+VARYING vec4 view;
 
 void main() 
 {
-	vec3 viewVec = view.xyz;
 	vec4 color;
 	
-	float dist = length(viewVec.xy);
+	float dist = length(view.xy);
 	
 	//normalize view vector
-	viewVec = normalize(viewVec);
+	vec3 viewVec = normalize(view.xyz);
 	
 	//get wave normals
-	vec3 wavef = texture2D(bumpMap, vec2(refCoord.w, view.w)).xyz*2.0;
-
-	//get detail normals
-	vec3 dcol = texture2D(bumpMap, littleWave.xy).rgb*0.75;
-	dcol += texture2D(bumpMap, littleWave.zw).rgb*1.25;
-
-	//interpolate between big waves and little waves (big waves in deep water)
-	wavef = (wavef + dcol) * 0.5;
-	
-	//crunch normal to range [-1,1]
-	wavef -= vec3(1,1,1);
-	wavef = normalize(wavef);
-   
+	vec3 wave1 = texture2D(bumpMap, vec2(refCoord.w, view.w)).xyz*2.0-1.0;
+	vec3 wave2 = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0;
+	vec3 wave3 = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0;
 	//get base fresnel components	
 	
-	float df = dot(viewVec,wavef) * fresnelScale + fresnelOffset;
+	vec3 df = vec3(
+					dot(viewVec, wave1),
+					dot(viewVec, (wave2 + wave3) * 0.5),
+					dot(viewVec, wave3)
+				 ) * fresnelScale + fresnelOffset;
+	df *= df;
 		    
 	vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5;
 	
 	float dist2 = dist;
 	dist = max(dist, 5.0);
 	
+	float dmod = sqrt(dist);
+	
+	vec2 dmod_scale = vec2(dmod*dmod, dmod);
+	
 	//get reflected color
-	vec2 refdistort = wavef.xy*dot(normScale, vec3(0.333));
-	vec2 refvec = distort+refdistort/dist;
-	vec4 refcol = texture2D(refTex, refvec);
+	vec2 refdistort1 = wave1.xy*normScale.x;
+	vec2 refvec1 = distort+refdistort1/dmod_scale;
+	vec4 refcol1 = texture2D(refTex, refvec1);
+	
+	vec2 refdistort2 = wave2.xy*normScale.y;
+	vec2 refvec2 = distort+refdistort2/dmod_scale;
+	vec4 refcol2 = texture2D(refTex, refvec2);
+	
+	vec2 refdistort3 = wave3.xy*normScale.z;
+	vec2 refvec3 = distort+refdistort3/dmod_scale;
+	vec4 refcol3 = texture2D(refTex, refvec3);
+
+	vec4 refcol = refcol1 + refcol2 + refcol3;
+	float df1 = df.x + df.y + df.z;
+	refcol *= df1 * 0.333;
+	
+	vec3 wavef = (wave1 + wave2 * 0.4 + wave3 * 0.6) * 0.5;
+	
+	wavef.z *= max(-viewVec.z, 0.1);
+	wavef = normalize(wavef);
+	
+	float df2 = dot(viewVec, wavef) * fresnelScale+fresnelOffset;
+	
+	vec2 refdistort4 = wavef.xy*0.125;
+	refdistort4.y -= abs(refdistort4.y);
+	vec2 refvec4 = distort+refdistort4/dmod;
+	float dweight = min(dist2*blurMultiplier, 1.0);
+	vec4 baseCol = texture2D(refTex, refvec4);
+	refcol = mix(baseCol*df2, refcol, dweight);
 
 	//get specular component
 	float spec = clamp(dot(lightDir, (reflect(viewVec,wavef))),0.0,1.0);
-	
+		
 	//harden specular
-	spec = pow(spec, lightExp);
+	spec = pow(spec, 128.0);
 
 	//figure out distortion vector (ripply)   
-	vec2 distort2 = distort+wavef.xy*refScale/max(dist*df, 1.0);
+	vec2 distort2 = distort+wavef.xy*refScale/max(dmod*df1, 1.0);
 		
 	vec4 fb = texture2D(screenTex, distort2);
 	
 	//mix with reflection
-	color.rgb = mix(mix(fogCol.rgb, fb.rgb, fogCol.a), refcol.rgb, df);
+	// Note we actually want to use just df1, but multiplying by 0.999999 gets around and nvidia compiler bug
+	color.rgb = mix(fb.rgb, refcol.rgb, df1 * 0.99999);
 	color.rgb += spec * specular;
 	
-	//color.rgb = applyWaterFog(color);//atmosTransport(color.rgb);
+	color.rgb = atmosTransport(color.rgb);
 	color.rgb = scaleSoftClip(color.rgb);
 	color.a = spec * sunAngle2;
 
-	gl_FragColor = color;
+	frag_color = color;
 }