Print done when done.

1 files changed, 136 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class2/environment/waterF.glsl b/indra/newview/app_settings/shaders/class2/environment/waterF.glsl
new file mode 100644
index 0000000000..e0e79e95ba
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/environment/waterF.glsl
@@ -0,0 +1,136 @@
+void applyScatter(inout vec3 color);
+
+uniform sampler2D diffuseMap;
+uniform sampler2D bumpMap;   
+uniform samplerCube environmentMap; //: TEXUNIT4,   // Environment map texture
+uniform sampler2D screenTex;   //   : TEXUNIT5
+
+uniform vec3 lightDir;
+uniform vec3 specular;
+uniform float lightExp;
+uniform vec2 fbScale;
+uniform float refScale;
+
+float msin(float x) {
+   float k = sin(x)+1.0;
+   k *= 0.5;
+   k *= k;
+   return 2.0 * k;
+}
+
+float mcos(float x) {
+   float k = cos(x)+1.0;
+   k *= 0.5;
+   k *= k;
+   return 2.0 * k;
+}
+
+float waveS(vec2 v, float t, float a, float f, vec2 d, float s, sampler1D sinMap) 
+{
+   return texture1D(sinMap, (dot(d, v)*f + t*s)*f).r*a;
+}
+
+float waveC(vec2 v, float t, float a, float f, vec2 d, float s, sampler1D sinMap) 
+{
+   return texture1D(sinMap, (dot(d, v)*f + t*s)*f).g*a*2.0-1.0;
+}
+
+float magnitude(vec3 vec) {
+   return sqrt(dot(vec,vec));
+}
+
+vec3 mreflect(vec3 i, vec3 n) {
+   return i + n * 2.0 * abs(dot(n,i))+vec3(0.0,0.0,0.5);
+}
+
+void main() 
+{
+   vec2 texCoord = gl_TexCoord[0].xy;   // Texture coordinates
+   vec2 littleWave1 = gl_TexCoord[0].zw;
+   vec2 littleWave2 = gl_TexCoord[1].xy;
+   vec2 bigWave = gl_TexCoord[1].zw;
+   vec3 viewVec = gl_TexCoord[2].xyz;
+   vec4 refCoord = gl_TexCoord[3];
+   vec4 col = gl_Color;
+   vec4 color;
+   
+   //get color from alpha map (alpha denotes water depth), rgb denotes water color
+   vec4 wcol = texture2D(diffuseMap, texCoord.xy);
+      
+   //store texture alpha
+   float da = wcol.a;
+         
+   //modulate by incoming water color
+   //wcol.a *= refCoord.w;
+   
+   //scale wcol.a (water depth) for steep transition
+   wcol.a *= wcol.a;
+   
+   //normalize view vector
+   viewVec = normalize(viewVec);
+   
+   //get bigwave normal
+   vec3 wavef = texture2D(bumpMap, bigWave).xyz*2.0;
+      
+   vec3 view = vec3(viewVec.x, viewVec.y, viewVec.z);
+   
+   float dx = 1.0-(dot(wavef*2.0-vec3(1.0), view))*da;
+   dx *= 0.274;
+      
+   //get detail normals
+   vec3 dcol = texture2D(bumpMap, littleWave1+dx*view.xy).rgb*0.75;
+   dcol += texture2D(bumpMap, littleWave2+view.xy*dx*0.1).rgb*1.25;
+      
+   //interpolate between big waves and little waves (big waves in deep water)
+   wavef = wavef*wcol.a + dcol*(1.0-wcol.a);
+   
+   //crunch normal to range [-1,1]
+   wavef -= vec3(1,1,1);
+   
+   //get base fresnel component
+   float df = dot(viewVec,wavef);
+   //reposition fresnel to latter half of [0,1]
+   df = 1.0-clamp(df,0.0,1.0);
+
+   //set output alpha based on fresnel
+   color.a = clamp((df+da)*0.5,0.0,1.0);
+      
+   //calculate reflection vector
+   vec3 ref = reflect(viewVec.xyz, wavef);
+   
+   //get specular component
+   float spec = clamp(dot(lightDir, normalize(ref)),0.0,1.0);
+      
+   //fudge reflection to be more noisy at good angles
+   ref.z = ref.z*ref.z+df*df*0.5;
+   
+   //get diffuse component
+   float diff = clamp((abs(dot(ref, wavef))),0.0,1.0)*0.9;
+      
+   //fudge diffuse for extra contrast and ambience
+   diff *= diff;      
+   diff += 0.4;
+    
+   //set diffuse color contribution
+   color.rgb = textureCube(environmentMap, ref).rgb*diff;
+   
+   //harden specular
+   spec = pow(spec, lightExp);
+   
+   //add specular color contribution
+   color.rgb += spec * specular;
+
+   //figure out distortion vector (ripply)   
+   vec2 distort = clamp(((refCoord.xy/refCoord.z) * 0.5 + 0.5 + wavef.xy*refScale),0.0,0.99);
+   
+   //read from framebuffer (offset)
+   vec4 fb = texture2D(screenTex, distort*fbScale);
+   
+   //tint by framebuffer
+   color.rgb = color.a*color.rgb + (1.0-color.a)*fb.rgb;
+   
+   //apply fog
+   applyScatter(color.rgb);
+   
+   gl_FragColor = color;
+}