diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/environment/waterF.glsl')
-rw-r--r-- | indra/newview/app_settings/shaders/class2/environment/waterF.glsl | 170 |
1 files changed, 170 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..d485379a56 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/environment/waterF.glsl @@ -0,0 +1,170 @@ +/** + * @file waterF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * 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 + * $/LicenseInfo$ + */ + +//class2/environment/waterF.glsl + +#ifdef DEFINE_GL_FRAGCOLOR +out vec4 frag_color; +#else +#define frag_color gl_FragColor +#endif + +vec3 scaleSoftClip(vec3 inColor); +vec3 atmosTransport(vec3 inColor); + +uniform sampler2D bumpMap; +uniform sampler2D bumpMap2; +uniform float blend_factor; +uniform sampler2D screenTex; +uniform sampler2D refTex; + +uniform float sunAngle; +uniform float sunAngle2; +uniform vec3 lightDir; +uniform vec3 specular; +uniform float lightExp; +uniform float refScale; +uniform float kd; +uniform vec2 screenRes; +uniform vec3 normScale; +uniform float fresnelScale; +uniform float fresnelOffset; +uniform float blurMultiplier; + + +//bigWave is (refCoord.w, view.w); +VARYING vec4 refCoord; +VARYING vec4 littleWave; +VARYING vec4 view; + +vec3 BlendNormal(vec3 bump1, vec3 bump2) +{ + vec3 n = mix(bump1, bump2, blend_factor); + return n; +} + + +void main() +{ + vec4 color; + + float dist = length(view.xy); + + //normalize view vector + vec3 viewVec = normalize(view.xyz); + + //get wave normals + vec2 bigwave = vec2(refCoord.w, view.w); + vec3 wave1_a = texture2D(bumpMap, bigwave ).xyz*2.0-1.0; + vec3 wave2_a = texture2D(bumpMap, littleWave.xy).xyz*2.0-1.0; + vec3 wave3_a = texture2D(bumpMap, littleWave.zw).xyz*2.0-1.0; + + + vec3 wave1_b = texture2D(bumpMap2, bigwave ).xyz*2.0-1.0; + vec3 wave2_b = texture2D(bumpMap2, littleWave.xy).xyz*2.0-1.0; + vec3 wave3_b = texture2D(bumpMap2, littleWave.zw).xyz*2.0-1.0; + + vec3 wave1 = BlendNormal(wave1_a, wave1_b); + vec3 wave2 = BlendNormal(wave2_a, wave2_b); + vec3 wave3 = BlendNormal(wave3_a, wave3_b); + + + //get base fresnel components + + 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 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, 128.0); + + //figure out distortion vector (ripply) + vec2 distort2 = distort+wavef.xy*refScale/max(dmod*df1, 1.0); + + vec4 fb = texture2D(screenTex, distort2); + + //mix with reflection + // 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 = atmosTransport(color.rgb); + color.rgb = scaleSoftClip(color.rgb); + color.a = spec * sunAngle2; + + frag_color = color; + +#if defined(WATER_EDGE) + gl_FragDepth = 0.9999847f; +#endif + +} + |