diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl')
| -rwxr-xr-x[-rw-r--r--] | indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl | 107 |
1 files changed, 87 insertions, 20 deletions
diff --git a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl index f1740a4dcd..0d8dab0a41 100644..100755 --- a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl +++ b/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl @@ -1,38 +1,106 @@ /** * @file underWaterF.glsl * - * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc. - * $License$ + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2007, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ */ + +#ifdef DEFINE_GL_FRAGCOLOR +out vec4 frag_color; +#else +#define frag_color gl_FragColor +#endif uniform sampler2D diffuseMap; uniform sampler2D bumpMap; uniform sampler2D screenTex; +uniform sampler2D refTex; +uniform sampler2D screenDepth; +uniform vec4 fogCol; +uniform vec3 lightDir; +uniform vec3 specular; +uniform float lightExp; +uniform vec2 fbScale; uniform float refScale; +uniform float znear; +uniform float zfar; +uniform float kd; +uniform vec4 waterPlane; +uniform vec3 eyeVec; uniform vec4 waterFogColor; +uniform float waterFogDensity; +uniform float waterFogKS; +uniform vec2 screenRes; //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() +vec4 applyWaterFog(vec4 color, vec3 viewVec) { - vec4 color; + //normalize view vector + vec3 view = normalize(viewVec); + float es = -view.z; + + //find intersection point with water plane and eye vector - //get bigwave normal - 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; + //get eye depth + float e0 = max(-waterPlane.w, 0.0); + + //get object depth + float depth = length(viewVec); + + //get "thickness" of water + float l = max(depth, 0.1); + + float kd = waterFogDensity; + float ks = waterFogKS; + vec4 kc = waterFogColor; + + float F = 0.98; + + float t1 = -kd * pow(F, ks * e0); + float t2 = kd + ks * es; + float t3 = pow(F, t2*l) - 1.0; + + float L = min(t1/t2*t3, 1.0); + + float D = pow(0.98, l*kd); + //return vec4(1.0, 0.0, 1.0, 1.0); + return color * D + kc * L; + //depth /= 10.0; + //return vec4(depth,depth,depth,0.0); +} - //crunch normal to range [-1,1] - wavef -= vec3(1,1,1); +void main() +{ + vec4 color; + + //get detail normals + 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; + vec3 wavef = normalize(wave1+wave2+wave3); //figure out distortion vector (ripply) vec2 distort = (refCoord.xy/refCoord.z) * 0.5 + 0.5; @@ -40,6 +108,5 @@ void main() vec4 fb = texture2D(screenTex, distort); - gl_FragColor.rgb = mix(waterFogColor.rgb, fb.rgb, waterFogColor.a * 0.001 + 0.999); - gl_FragColor.a = fb.a; + frag_color = applyWaterFog(fb,view.xyz); } |