Sea colour effect by Emilian Huminiuc
Signed-off-by: Vivian Meazza <vivian.meazza@lineone.net>
This commit is contained in:
Vivian Meazza
parent
cad41c4eff
commit
af22245993
4 changed files with 542 additions and 418 deletions
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@ -18,13 +18,27 @@ varying vec3 rawNormal;
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varying vec3 VTangent;
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varying vec3 VBinormal;
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uniform float osg_SimulationTime;
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varying vec3 WorldPos;
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varying vec2 TopoUV;
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uniform float WindE, WindN;
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uniform int rembrandt_enabled;
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uniform float osg_SimulationTime;
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uniform mat4 osg_ViewMatrixInverse;
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attribute vec3 tangent;
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attribute vec3 binormal;
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// constants for the cartezian to geodetic conversion.
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const float a = 6378137.0; //float a = equRad;
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const float squash = 0.9966471893352525192801545;
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const float latAdjust = 0.9999074159800018; //geotiff source for the depth map
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const float lonAdjust = 0.9999537058469516; //actual extents: +-180.008333333333326/+-90.008333333333340
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/////// functions /////////
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void rotationmatrix(in float angle, out mat4 rotmat)
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@ -64,6 +78,46 @@ void main(void)
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rotationmatrix(Angle, RotationMatrix);
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waterTex2 = gl_MultiTexCoord0 * RotationMatrix - t2 * windFactor;
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// fog_Func(fogType);
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WorldPos = (osg_ViewMatrixInverse *gl_ModelViewMatrix * gl_Vertex).xyz;
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///FIXME: convert cartezian coordinates to geodetic, this
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///FIXME: duplicates parts of code in SGGeodesy.cxx
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////////////////////////////////////////////////////////////////////////////
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float e2 = abs(1.0 - squash * squash);
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float ra2 = 1.0/(a * a);
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float e4 = e2 * e2;
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float XXpYY = WorldPos.x * WorldPos.x + WorldPos.y * WorldPos.y;
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float Z = WorldPos.z;
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float sqrtXXpYY = sqrt(XXpYY);
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float p = XXpYY * ra2;
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float q = Z*Z*(1.0-e2)*ra2;
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float r = 1.0/6.0*(p + q - e4);
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float s = e4 * p * q/(4.0*r*r*r);
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if ( s >= 2.0 && s <= 0.0)
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s = 0.0;
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float t = pow(1.0+s+sqrt(s*2.0+s*s), 1.0/3.0);
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float u = r + r*t + r/t;
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float v = sqrt(u*u + e4*q);
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float w = (e2*u+ e2*v-e2*q)/(2.0*v);
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float k = sqrt(u+v+w*w)-w;
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float D = k*sqrtXXpYY/(k+e2);
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vec2 NormPosXY = normalize(WorldPos.xy);
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vec2 NormPosXZ = normalize(vec2(D, WorldPos.z));
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float signS = sign(WorldPos.y);
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if (-0.00015 <= WorldPos.y && WorldPos.y<=.00015)
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signS = 1.0;
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float signT = sign(WorldPos.z);
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if (-0.0002 <= WorldPos.z && WorldPos.z<=.0002)
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signT = 1.0;
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float cosLon = dot(NormPosXY, vec2(1.0,0.0));
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float cosLat = dot(abs(NormPosXZ), vec2(1.0,0.0));
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TopoUV.s = signS * lonAdjust * degrees(acos(cosLon))/180.;
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TopoUV.t = signT * latAdjust * degrees(acos(cosLat))/90.;
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TopoUV.s = TopoUV.s * 0.5 + 0.5;
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TopoUV.t = TopoUV.t * 0.5 + 0.5;
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//FIXME end/////////////////////////////////////////////////////////////////
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gl_Position = ftransform();
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}
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@ -14,9 +14,20 @@ varying vec3 viewerdir;
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varying vec3 lightdir;
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varying vec3 normal;
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varying vec3 WorldPos;
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varying vec2 TopoUV;
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uniform float osg_SimulationTime;
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uniform mat4 osg_ViewMatrixInverse;
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uniform float WindE, WindN;
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// constants for the cartezian to geodetic conversion.
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const float a = 6378137.0; //float a = equRad;
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const float squash = 0.9966471893352525192801545;
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const float latAdjust = 0.9999074159800018; //geotiff source for the depth map
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const float lonAdjust = 0.9999537058469516; //actual extents: +-180.008333333333326/+-90.008333333333340
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/////// functions /////////
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void rotationmatrix(in float angle, out mat4 rotmat)
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@ -54,5 +65,48 @@ void main(void)
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waterTex2 = gl_MultiTexCoord0 * RotationMatrix - t2 * windFactor;
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// fog_Func(fogType);
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WorldPos = (osg_ViewMatrixInverse *gl_ModelViewMatrix * gl_Vertex).xyz;
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///FIXME: convert cartezian coordinates to geodetic, this
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///FIXME: duplicates parts of code in SGGeodesy.cxx
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////////////////////////////////////////////////////////////////////////////
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float e2 = abs(1.0 - squash * squash);
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float ra2 = 1.0/(a * a);
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float e4 = e2 * e2;
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float XXpYY = WorldPos.x * WorldPos.x + WorldPos.y * WorldPos.y;
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float Z = WorldPos.z;
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float sqrtXXpYY = sqrt(XXpYY);
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float p = XXpYY * ra2;
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float q = Z*Z*(1.0-e2)*ra2;
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float r = 1.0/6.0*(p + q - e4);
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float s = e4 * p * q/(4.0*r*r*r);
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if ( s >= 2.0 && s <= 0.0)
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s = 0.0;
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float t = pow(1.0+s+sqrt(s*2.0+s*s), 1.0/3.0);
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float u = r + r*t + r/t;
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float v = sqrt(u*u + e4*q);
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float w = (e2*u+ e2*v-e2*q)/(2.0*v);
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float k = sqrt(u+v+w*w)-w;
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float D = k*sqrtXXpYY/(k+e2);
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vec2 NormPosXY = normalize(WorldPos.xy);
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vec2 NormPosXZ = normalize(vec2(D, WorldPos.z));
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float signS = sign(WorldPos.y);
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if (-0.00015 <= WorldPos.y && WorldPos.y<=.00015)
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signS = 1.0;
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float signT = sign(WorldPos.z);
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if (-0.0002 <= WorldPos.z && WorldPos.z<=.0002)
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signT = 1.0;
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float cosLon = dot(NormPosXY, vec2(1.0,0.0));
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float cosLat = dot(abs(NormPosXZ), vec2(1.0,0.0));
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TopoUV.s = signS * lonAdjust * degrees(acos(cosLon))/180.;
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TopoUV.t = signT * latAdjust * degrees(acos(cosLat))/90.;
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TopoUV.s = TopoUV.s * 0.5 + 0.5;
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TopoUV.t = TopoUV.t * 0.5 + 0.5;
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//FIXME end/////////////////////////////////////////////////////////////////
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gl_Position = ftransform();
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}
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@ -1,12 +1,13 @@
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// FRAGMENT SHADER
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// This shader is mostly an adaptation of the shader found at
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// http://www.bonzaisoftware.com/water_tut.html and its glsl conversion
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// available at http://forum.bonzaisoftware.com/viewthread.php?tid=10
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// Michael Horsch - 2005
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// ©Michael Horsch - 2005
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// Major update and revisions - 2011-10-07
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// Emilian Huminiuc and Vivian Meazza
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// ©Emilian Huminiuc and Vivian Meazza
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// Optimisation - 2012-5-05
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// Based on ideas by Thorsten Renk
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// Emilian Huminiuc and Vivian Meazza
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// ©Emilian Huminiuc and Vivian Meazza
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#version 120
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@ -17,6 +18,8 @@ uniform sampler2D water_reflection_grey ;
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uniform sampler2D sea_foam ;
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uniform sampler2D perlin_normalmap ;
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uniform sampler2D topo_map;
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uniform sampler3D Noise ;
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@ -43,6 +46,9 @@ uniform int Status ;
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varying vec4 waterTex1 ; //moving texcoords
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varying vec4 waterTex2 ; //moving texcoords
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varying vec3 WorldPos ;
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varying vec2 TopoUV ;
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varying vec3 viewerdir ;
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varying vec3 lightdir ;
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varying vec3 normal ;
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@ -51,6 +57,10 @@ varying vec3 VTangent ;
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varying vec3 VBinormal ;
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const vec4 AllOnes = vec4(1.0);
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const vec4 sca = vec4(0.005, 0.005, 0.005, 0.005) ;
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const vec4 sca2 = vec4(0.02, 0.02, 0.02, 0.02) ;
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const vec4 tscale = vec4(0.25, 0.25, 0.25, 0.25) ;
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const float water_shininess = 240.0 ;
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/////// functions /////////
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void encode_gbuffer(vec3 normal, vec3 color, int mId, float specular, float shininess, float emission, float depth);
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@ -100,7 +110,7 @@ float evaluateWaveDerivSharp(Wave w, vec2 pos, float t, float k)
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return k*w.freq*w.amp * pow(sin( dot(w.dir, pos)*w.freq + t*w.phase)* 0.5 + 0.5 , k - 1.0) * cos( dot(w.dir, pos)*w.freq + t*w.phase) ;
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}
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void sumWaves(float angle, float dangle, float windScale, float factor, out float ddx, float ddy)
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void sumWaves(float angle, float dangle, float windScale, float factor, out float ddx, out float ddy)
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{
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mat4 RotationMatrix ;
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float deriv ;
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@ -132,9 +142,6 @@ void sumWaves(float angle, float dangle, float windScale, float factor, out floa
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void main(void)
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{
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const vec4 sca = vec4(0.005, 0.005, 0.005, 0.005) ;
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const vec4 sca2 = vec4(0.02, 0.02, 0.02, 0.02) ;
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const vec4 tscale = vec4(0.25, 0.25, 0.25, 0.25) ;
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mat4 RotationMatrix ;
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@ -148,22 +155,33 @@ void main(void)
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vec3 Normal = normalize(normal) ;
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vec3 vNormal = normalize(rawNormal) ;
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const float water_shininess = 240.0 ;
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// float range = gl_ProjectionMatrix[3].z/(gl_FragCoord.z * -2.0 + 1.0 - gl_ProjectionMatrix[2].z);
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// approximate cloud cover
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float cover = 0.0 ;
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//bool Status = true;
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// Global bathymetry texture
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vec4 topoTexel = texture2D(topo_map, TopoUV);
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vec4 mixNoise = texture3D(Noise, WorldPos.xyz * 0.00005);
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vec4 mixNoise1 = texture3D(Noise, WorldPos.xyz * 0.00008);
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float mixNoiseFactor = mixNoise.r * mixNoise.g * mixNoise.b;
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float mixNoise1Factor = mixNoise1.r * mixNoise1.g * mixNoise1.b;
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mixNoiseFactor *= 300.0;
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mixNoise1Factor *= 300.0;
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mixNoiseFactor = 0.8 + 0.2 * smoothstep(0.0,1.0, mixNoiseFactor)* smoothstep(0.0,1.0, mixNoise1Factor);
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float floorMixFactor = smoothstep(0.3, 0.985, topoTexel.a * mixNoiseFactor);
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vec3 floorColour = mix(topoTexel.rgb, mixNoise.rgb * mixNoise1.rgb, 0.3);
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float windFloorFactor = 1.0 + 0.5 * smoothstep(0.8, 0.985, topoTexel.a);
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float windEffect = sqrt( WindE*WindE + WindN*WindN ) * 0.6; //wind speed in kt
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float windFloorEffect = windEffect * windFloorFactor;
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float windScale = 15.0/(3.0 + windEffect); //wave scale
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float windEffect_low = 0.3 + 0.7 * smoothstep(0.0, 5.0, windEffect); //low windspeed wave filter
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float waveRoughness = 0.01 + smoothstep(0.0, 40.0, windEffect); //wave roughness filter
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float mixFactor = 0.2 + 0.02 * smoothstep(0.0, 50.0, windEffect);
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mixFactor = clamp(mixFactor, 0.3, 0.8);
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float mixFactor = 0.2 + 0.02 * smoothstep(0.0, 50.0, windFloorEffect);
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mixFactor = clamp(mixFactor, 0.3, 0.95);
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// sine waves
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// Test data
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@ -173,12 +191,6 @@ void main(void)
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vec4 ddxVec = vec4(0.0) ;
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vec4 ddyVec = vec4(0.0) ;
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int detailFlag = 0 ;
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//uncomment to test
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//range = -20000;
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// if (range > -15000 || dot(Normal,H) > 0.95 ) {
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float ddx = 0.0, ddy = 0.0 ;
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float ddx1 = 0.0, ddy1 = 0.0 ;
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@ -187,25 +199,30 @@ void main(void)
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float waveamp ;
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float angle = 0.0 ;
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float WaveAmpFromDepth = WaveAmp * (1.0 + 0.5 * smoothstep(0.8, 0.9, topoTexel.a));
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float phaseFloorFactor = 1.0 - 0.2 * smoothstep(0.8, 0.9, topoTexel.a);
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wave0.freq = WaveFreq ;
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wave0.amp = WaveAmp ;
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wave0.amp = WaveAmpFromDepth ;
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wave0.dir = vec2(cos(radians(angle)), sin(radians(angle))) ;
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wave0.phase *= phaseFloorFactor;
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angle -= 45.0 ;
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wave1.freq = WaveFreq * 2.0 ;
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wave1.amp = WaveAmp * 1.25 ;
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wave1.amp = WaveAmpFromDepth * 1.25 ;
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wave1.dir = vec2(cos(radians(angle)), sin(radians(angle))) ;
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wave1.phase *= phaseFloorFactor;
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angle += 30.0;
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wave2.freq = WaveFreq * 3.5 ;
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wave2.amp = WaveAmp * 0.75 ;
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wave2.amp = WaveAmpFromDepth * 0.75 ;
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wave2.dir = vec2(cos(radians(angle)), sin(radians(angle))) ;
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wave2.phase *= phaseFloorFactor;
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angle -= 50.0 ;
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wave3.freq = WaveFreq * 3.0 ;
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wave3.amp = WaveAmp * 0.75 ;
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wave3.amp = WaveAmpFromDepth * 0.75 ;
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wave3.dir = vec2(cos(radians(angle)), sin(radians(angle))) ;
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wave3.phase *= phaseFloorFactor;
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// sum waves
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@ -217,7 +234,7 @@ void main(void)
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//reset the waves
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angle = 0.0 ;
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waveamp = WaveAmp * 0.75 ;
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waveamp = WaveAmpFromDepth * 0.75 ;
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wave0.freq = WaveFreq ;
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wave0.amp = waveamp ;
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@ -248,10 +265,6 @@ void main(void)
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ddxVec = vec4(ddx, ddx1, ddx2, ddx3) ;
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ddyVec = vec4(ddy, ddy1, ddy2, ddy3) ;
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//toggle detailFlag
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//detailFlag = 1 ;
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// } // end sine stuff
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float ddxSum = dot(ddxVec, AllOnes) ;
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float ddySum = dot(ddyVec, AllOnes) ;
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@ -266,73 +279,73 @@ void main(void)
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}
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}
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// vec4 viewt = normalize(waterTex4);
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vec4 viewt = vec4(-E, 0.0) * 0.6 ;
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vec4 disdis = texture2D(water_dudvmap, vec2(waterTex2 * tscale)* windScale) * 2.0 - 1.0 ;
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vec2 uvAnimSca2 = (waterTex1 + disdis * sca2).st * windScale;
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//normalmaps
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vec4 nmap = texture2D(water_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0 ;
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vec4 nmap1 = texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0 ;
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vec4 nmap = texture2D(water_normalmap, uvAnimSca2) * 2.0 - 1.0;
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vec4 nmap1 = texture2D(perlin_normalmap, uvAnimSca2) * 2.0 - 1.0;
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rotationmatrix(radians(3.0 * sin(osg_SimulationTime * 0.0075)), RotationMatrix);
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nmap += texture2D(water_normalmap, vec2(waterTex2 * RotationMatrix * tscale) * windScale) * 2.0 - 1.0 ;
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nmap1 += texture2D(perlin_normalmap, vec2(waterTex2 * RotationMatrix * tscale) * windScale) * 2.0 - 1.0 ;
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vec2 uvAnimTscale = (waterTex2 * RotationMatrix * tscale).st * windScale;
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nmap *= windEffect_low ;
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nmap1 *= windEffect_low ;
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nmap += texture2D(water_normalmap, uvAnimTscale) * 2.0 - 1.0;
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nmap1 += texture2D(perlin_normalmap, uvAnimTscale) * 2.0 - 1.0;
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// mix water and noise, modulated by factor
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vec4 vNorm = normalize(mix(nmap, nmap1, mixFactor) * waveRoughness) ;
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vNorm.r += ddxSum ;
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vNorm.y += ddySum ;
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if (normalmap_dds > 0)//dds fix
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vNorm = -vNorm ;
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//load reflection
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//vec4 tmp = vec4(lightdir, 0.0);
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vec4 tmp = vec4(0.0);
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vec4 refTex = texture2D(water_reflection, vec2(tmp + waterTex1) * 32.0) ;
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vec4 refTexGrey = texture2D(water_reflection_grey, vec2(tmp + waterTex1) * 32.0) ;
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vec4 refl ;
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//vec4 tmp = vec4(0.0);
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vec2 refTexUV = waterTex1.st * 32.0;
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vec4 refTex = texture2D(water_reflection, refTexUV) ;
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vec4 refTexGrey = texture2D(water_reflection_grey, refTexUV) ;
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vec4 refl = vec4(0.0,0.0,0.0,1.0) ;
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// Test data
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// cover = 0;
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if(cover >= 1.5){
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refl = normalize(refTex);
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refl.a = 1.0;
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refl.rgb = normalize(refTex).rgb;
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}
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else
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{
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refl = normalize(refTexGrey);
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refl.rgb = normalize(refTexGrey).rgb;
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refl.r *= (0.75 + 0.15 * cover);
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refl.g *= (0.80 + 0.15 * cover);
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refl.b *= (0.875 + 0.125 * cover);
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refl.a = 1.0;
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}
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vec3 N0 = vec3(texture2D(water_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0);
|
||||
vec3 N1 = vec3(texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca) * windScale) * 2.0 - 1.0);
|
||||
vec4 N0 = texture2D(water_normalmap, uvAnimSca2) * 2.0 - 1.0;
|
||||
vec4 N1 = texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca) * windScale) * 2.0 - 1.0;
|
||||
|
||||
N0 += texture2D(water_normalmap, vec2(waterTex1 * tscale) * windScale) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, vec2(waterTex2 * tscale) * windScale) * 2.0 - 1.0;
|
||||
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex1 * tscale) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex2 * tscale) * windScale) * 2.0 - 1.0);
|
||||
|
||||
rotationmatrix(radians(2.0 * sin(osg_SimulationTime * 0.005)), RotationMatrix);
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex2 * RotationMatrix * (tscale + sca2)) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex2 * RotationMatrix * (tscale + sca2)) * windScale) * 2.0 - 1.0);
|
||||
vec2 uvAnimTscaleSca2 = (waterTex2 * RotationMatrix * (tscale + sca2)).st * windScale;
|
||||
N0 += texture2D(water_normalmap, uvAnimTscaleSca2) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, uvAnimTscaleSca2) * 2.0 - 1.0;
|
||||
|
||||
rotationmatrix(radians(-4.0 * sin(osg_SimulationTime * 0.003)), RotationMatrix);
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca2) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca) * windScale) * 2.0 - 1.0);
|
||||
N0 += texture2D(water_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca2) * windScale) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca) * windScale) * 2.0 - 1.0;
|
||||
|
||||
// if(detailFlag > 0)
|
||||
// {
|
||||
N0 *= windEffect_low;
|
||||
N1 *= windEffect_low;
|
||||
|
||||
N0.r += ddxSum;
|
||||
N0.g += ddySum;
|
||||
vec3 N2 = normalize(mix(N0, N1, mixFactor) * waveRoughness);
|
||||
vec3 N2 = normalize(mix(N0.rgb, N1.rgb, mixFactor) * waveRoughness);
|
||||
Normal = normalize(N2.x * VTangent + N2.y * VBinormal + N2.z * Normal);
|
||||
//vNormal = normalize(mix(vNormal + N0, vNormal + N1, mixFactor) * waveRoughness);
|
||||
vNormal = normalize(N2.x * vec3(1.0, 0.0, 0.0) + N2.y * vec3(0.0, 1., 0.0) + N2.z * vNormal);
|
||||
|
|
@ -340,7 +353,6 @@ void main(void)
|
|||
Normal = -Normal;
|
||||
vNormal = -vNormal;
|
||||
}
|
||||
// }
|
||||
|
||||
|
||||
// specular
|
||||
|
|
@ -350,35 +362,33 @@ void main(void)
|
|||
// float specular = saturation * 0.3;
|
||||
|
||||
//calculate fresnel
|
||||
vec4 invfres = vec4( dot(vNorm, viewt) );
|
||||
float vNormDotViewT = dot(vNorm, viewt);
|
||||
vec4 invfres = vec4( vNormDotViewT );
|
||||
vec4 fres = vec4(1.0) + invfres;
|
||||
refl *= fres;
|
||||
|
||||
refl.rgb = mix(refl.rgb, floorColour, floorMixFactor);
|
||||
//calculate final colour
|
||||
vec4 finalColor = refl;
|
||||
|
||||
|
||||
//add foam
|
||||
vec4 foam_texel = texture2D(sea_foam, vec2(waterTex2 * tscale) * 25.0);
|
||||
|
||||
// if (range > -10000.0){
|
||||
|
||||
vec4 foam_texel = texture2D(sea_foam, (waterTex2 * tscale).st * 50.0);
|
||||
float foamSlope = 0.1 + 0.1 * windScale;
|
||||
float waveSlope = vNormal.g;
|
||||
if (windEffect >= 8.0)
|
||||
if (waveSlope >= foamSlope){
|
||||
finalColor = mix( finalColor,
|
||||
max(finalColor, finalColor + foam_texel),
|
||||
smoothstep(0.01, 0.50, vNormal.g)
|
||||
);
|
||||
}
|
||||
|
||||
// } // end range
|
||||
float waveSlope1 = vNormal.g * windFloorFactor * 0.96 ; //0.6; Normals values seem to be .25 of those in the classic pipeline
|
||||
float waveSlope2 = vNorm.r * windFloorFactor * 0.4; //0.25;
|
||||
float waveSlope = waveSlope1 + waveSlope2 ;
|
||||
|
||||
finalColor = mix(finalColor, max(finalColor, finalColor + foam_texel),
|
||||
smoothstep(7.0, 8.0, windFloorEffect)
|
||||
* step(foamSlope, waveSlope)
|
||||
* smoothstep(0.01, 0.50, waveSlope));
|
||||
|
||||
float emission = dot( gl_FrontLightModelProduct.sceneColor.rgb + gl_FrontMaterial.emission.rgb,
|
||||
vec3( 0.3, 0.59, 0.11 )
|
||||
);
|
||||
float specular = smoothstep(0.0, 3.5, cover);
|
||||
|
||||
encode_gbuffer(Normal, finalColor.rgb, 254, specular, water_shininess, emission, gl_FragCoord.z);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,42 +1,51 @@
|
|||
// FRAGMENT SHADER
|
||||
// This shader is mostly an adaptation of the shader found at
|
||||
// http://www.bonzaisoftware.com/water_tut.html and its glsl conversion
|
||||
// available at http://forum.bonzaisoftware.com/viewthread.php?tid=10
|
||||
// © Michael Horsch - 2005
|
||||
// ©Michael Horsch - 2005
|
||||
// Major update and revisions - 2011-10-07
|
||||
// © Emilian Huminiuc and Vivian Meazza
|
||||
// ©Emilian Huminiuc and Vivian Meazza
|
||||
// Optimisation - 2012-5-05
|
||||
// Based on ideas by Thorsten Renk
|
||||
// © Emilian Huminiuc and Vivian Meazza
|
||||
// ©Emilian Huminiuc and Vivian Meazza
|
||||
|
||||
#version 120
|
||||
|
||||
uniform sampler2D water_normalmap;
|
||||
uniform sampler2D water_reflection;
|
||||
uniform sampler2D water_dudvmap;
|
||||
uniform sampler2D water_reflection_grey;
|
||||
uniform sampler2D sea_foam;
|
||||
uniform sampler2D perlin_normalmap;
|
||||
|
||||
uniform sampler3D Noise;
|
||||
|
||||
uniform float saturation, Overcast, WindE, WindN;
|
||||
uniform float CloudCover0, CloudCover1, CloudCover2, CloudCover3, CloudCover4;
|
||||
uniform float osg_SimulationTime;
|
||||
uniform int Status;
|
||||
|
||||
varying vec2 TopoUV;
|
||||
varying vec3 WorldPos;
|
||||
varying vec3 lightdir;
|
||||
varying vec3 normal;
|
||||
varying vec3 viewerdir;
|
||||
varying vec4 waterTex1; //moving texcoords
|
||||
varying vec4 waterTex2; //moving texcoords
|
||||
|
||||
varying vec3 viewerdir;
|
||||
varying vec3 lightdir;
|
||||
varying vec3 normal;
|
||||
uniform sampler2D perlin_normalmap;
|
||||
uniform sampler2D sea_foam;
|
||||
uniform sampler2D topo_map;
|
||||
uniform sampler2D water_dudvmap;
|
||||
uniform sampler2D water_normalmap;
|
||||
uniform sampler2D water_reflection;
|
||||
uniform sampler2D water_reflection_grey;
|
||||
uniform sampler3D Noise;
|
||||
|
||||
uniform float CloudCover0;
|
||||
uniform float CloudCover1;
|
||||
uniform float CloudCover2;
|
||||
uniform float CloudCover3;
|
||||
uniform float CloudCover4;
|
||||
uniform float Overcast;
|
||||
uniform float WindE;
|
||||
uniform float WindN;
|
||||
uniform float osg_SimulationTime;
|
||||
uniform float saturation;
|
||||
uniform int Status;
|
||||
|
||||
uniform float WaveFreq ;
|
||||
uniform float WaveAmp;
|
||||
uniform float WaveSharp ;
|
||||
uniform float WaveAngle;
|
||||
uniform float WaveFactor ;
|
||||
uniform float WaveDAngle;
|
||||
uniform float WaveFactor;
|
||||
uniform float WaveFreq;
|
||||
uniform float WaveSharp;
|
||||
uniform float normalmap_dds;
|
||||
|
||||
////fog "include" /////
|
||||
|
|
@ -46,6 +55,10 @@ vec3 fog_Func(vec3 color, int type);
|
|||
//////////////////////
|
||||
|
||||
const vec4 AllOnes = vec4(1.0);
|
||||
const vec4 sca = vec4(0.005, 0.005, 0.005, 0.005);
|
||||
const vec4 sca2 = vec4(0.02, 0.02, 0.02, 0.02);
|
||||
const vec4 tscale = vec4(0.25, 0.25, 0.25, 0.25);
|
||||
const float water_shininess = 240.0;
|
||||
|
||||
/////// functions /////////
|
||||
|
||||
|
|
@ -93,7 +106,7 @@ float evaluateWaveDerivSharp(Wave w, vec2 pos, float t, float k)
|
|||
return k*w.freq*w.amp * pow(sin( dot(w.dir, pos)*w.freq + t*w.phase)* 0.5 + 0.5 , k - 1.0) * cos( dot(w.dir, pos)*w.freq + t*w.phase);
|
||||
}
|
||||
|
||||
void sumWaves(float angle, float dangle, float windScale, float factor, out float ddx, float ddy)
|
||||
void sumWaves(float angle, float dangle, float windScale, float factor, out float ddx, out float ddy)
|
||||
{
|
||||
mat4 RotationMatrix;
|
||||
float deriv;
|
||||
|
|
@ -125,10 +138,6 @@ void sumWaves(float angle, float dangle, float windScale, float factor, out floa
|
|||
|
||||
void main(void)
|
||||
{
|
||||
const vec4 sca = vec4(0.005, 0.005, 0.005, 0.005);
|
||||
const vec4 sca2 = vec4(0.02, 0.02, 0.02, 0.02);
|
||||
const vec4 tscale = vec4(0.25, 0.25, 0.25, 0.25);
|
||||
|
||||
mat4 RotationMatrix;
|
||||
|
||||
// compute direction to viewer
|
||||
|
|
@ -142,25 +151,37 @@ void main(void)
|
|||
|
||||
vec3 Normal = normalize(normal);
|
||||
|
||||
const float water_shininess = 240.0;
|
||||
|
||||
float range = gl_ProjectionMatrix[3].z/(gl_FragCoord.z * -2.0 + 1.0 - gl_ProjectionMatrix[2].z);
|
||||
|
||||
// approximate cloud cover
|
||||
float cover = 0.0;
|
||||
//bool Status = true;
|
||||
|
||||
// try some aliasing fix for low angles
|
||||
// float viewAngle = smoothstep(0.0,0.5,abs(dot(E,Normal)));
|
||||
|
||||
// Global bathymetry texture
|
||||
vec4 topoTexel = texture2D(topo_map, TopoUV);
|
||||
vec4 mixNoise = texture3D(Noise, WorldPos.xyz * 0.00005);
|
||||
vec4 mixNoise1 = texture3D(Noise, WorldPos.xyz * 0.00008);
|
||||
float mixNoiseFactor = mixNoise.r * mixNoise.g * mixNoise.b;
|
||||
float mixNoise1Factor = mixNoise1.r * mixNoise1.g * mixNoise1.b;
|
||||
mixNoiseFactor *= 300.0;
|
||||
mixNoise1Factor *= 300.0;
|
||||
mixNoiseFactor = 0.8 + 0.2 * smoothstep(0.0,1.0, mixNoiseFactor)* smoothstep(0.0,1.0, mixNoise1Factor);
|
||||
float floorMixFactor = smoothstep(0.3, 0.985, topoTexel.a * mixNoiseFactor);
|
||||
vec3 floorColour = mix(topoTexel.rgb, mixNoise.rgb * mixNoise1.rgb, 0.3);
|
||||
|
||||
float windFloorFactor = 1.0 + 0.5 * smoothstep(0.8, 0.985, topoTexel.a);
|
||||
float windEffect = sqrt( WindE*WindE + WindN*WindN ) * 0.6; //wind speed in kt
|
||||
float windFloorEffect = windEffect * windFloorFactor;
|
||||
float windScale = 15.0/(3.0 + windEffect); //wave scale
|
||||
float windEffect_low = 0.3 + 0.7 * smoothstep(0.0, 5.0, windEffect); //low windspeed wave filter
|
||||
float waveRoughness = 0.01 + smoothstep(0.0, 40.0, windEffect); //wave roughness filter
|
||||
|
||||
float mixFactor = 0.2 + 0.02 * smoothstep(0.0, 50.0, windEffect);
|
||||
//mixFactor = 0.2;
|
||||
mixFactor = clamp(mixFactor, 0.3, 0.8);
|
||||
float mixFactor = 0.2 + 0.02 * smoothstep(0.0, 50.0, windFloorEffect);
|
||||
mixFactor = clamp(mixFactor, 0.3, 0.95);
|
||||
|
||||
// sine waves
|
||||
|
||||
//
|
||||
// Test data
|
||||
// float WaveFreq =1.0;
|
||||
// float WaveAmp = 1000.0;
|
||||
|
|
@ -168,12 +189,6 @@ void main(void)
|
|||
|
||||
vec4 ddxVec = vec4(0.0);
|
||||
vec4 ddyVec = vec4(0.0);
|
||||
int detailFlag = 0;
|
||||
|
||||
//uncomment to test
|
||||
//range = -20000;
|
||||
|
||||
if (range > -15000.0 || dot(Normal,H) > 0.95 ) {
|
||||
|
||||
float ddx = 0.0, ddy = 0.0;
|
||||
float ddx1 = 0.0, ddy1 = 0.0;
|
||||
|
|
@ -182,28 +197,32 @@ void main(void)
|
|||
float waveamp;
|
||||
|
||||
float angle = 0.0;
|
||||
|
||||
wave0.freq = WaveFreq ;
|
||||
wave0.amp = WaveAmp;
|
||||
float WaveAmpFromDepth = WaveAmp * windFloorFactor;
|
||||
float phaseFloorFactor = 1.0 - 0.2 * smoothstep(0.8, 0.9, topoTexel.a);
|
||||
wave0.freq = WaveFreq; // * (smoothstep(0.8, 0.9, topoTexel.a)*1.5 + 0.25);
|
||||
wave0.amp = WaveAmpFromDepth;
|
||||
wave0.dir = vec2(cos(radians(angle)), sin(radians(angle)));
|
||||
wave0.phase *= phaseFloorFactor;
|
||||
|
||||
angle -= 45.0;
|
||||
wave1.freq = WaveFreq * 2.0 ;
|
||||
wave1.amp = WaveAmp * 1.25;
|
||||
wave1.amp = WaveAmpFromDepth * 1.25;
|
||||
wave1.dir = vec2(cos(radians(angle)), sin(radians(angle)));
|
||||
wave1.phase *= phaseFloorFactor;
|
||||
|
||||
angle += 30.0;
|
||||
wave2.freq = WaveFreq * 3.5;
|
||||
wave2.amp = WaveAmp * 0.75;
|
||||
wave2.amp = WaveAmpFromDepth * 0.75;
|
||||
wave2.dir = vec2(cos(radians(angle)), sin(radians(angle)));
|
||||
wave2.phase *= phaseFloorFactor;
|
||||
|
||||
angle -= 50.0;
|
||||
wave3.freq = WaveFreq * 3.0 ;
|
||||
wave3.amp = WaveAmp * 0.75;
|
||||
wave3.amp = WaveAmpFromDepth * 0.75;
|
||||
wave3.dir = vec2(cos(radians(angle)), sin(radians(angle)));
|
||||
wave3.phase *= phaseFloorFactor;
|
||||
|
||||
// sum waves
|
||||
|
||||
ddx = 0.0, ddy = 0.0;
|
||||
sumWaves(WaveAngle, -1.5, windScale, WaveFactor, ddx, ddy);
|
||||
|
||||
|
|
@ -212,7 +231,7 @@ void main(void)
|
|||
|
||||
//reset the waves
|
||||
angle = 0.0;
|
||||
waveamp = WaveAmp * 0.75;
|
||||
waveamp = WaveAmpFromDepth * 0.75;
|
||||
|
||||
wave0.freq = WaveFreq ;
|
||||
wave0.amp = waveamp;
|
||||
|
|
@ -243,10 +262,6 @@ void main(void)
|
|||
ddxVec = vec4(ddx, ddx1, ddx2, ddx3);
|
||||
ddyVec = vec4(ddy, ddy1, ddy2, ddy3);
|
||||
|
||||
//toggle detailFlag
|
||||
detailFlag = 1;
|
||||
} // end sine stuff
|
||||
|
||||
float ddxSum = dot(ddxVec, AllOnes);
|
||||
float ddySum = dot(ddyVec, AllOnes);
|
||||
|
||||
|
|
@ -254,25 +269,27 @@ void main(void)
|
|||
cover = min(min(min(min(CloudCover0, CloudCover1),CloudCover2),CloudCover3),CloudCover4);
|
||||
} else {
|
||||
// hack to allow for Overcast not to be set by Local Weather
|
||||
if (Overcast == 0){
|
||||
cover = 5;
|
||||
if (Overcast == 0.0){
|
||||
cover = 5.0;
|
||||
} else {
|
||||
cover = Overcast * 5;
|
||||
cover = Overcast * 5.0;
|
||||
}
|
||||
}
|
||||
|
||||
// vec4 viewt = normalize(waterTex4);
|
||||
vec4 viewt = vec4(-E, 0.0) * 0.6;
|
||||
|
||||
vec4 disdis = texture2D(water_dudvmap, vec2(waterTex2 * tscale)* windScale) * 2.0 - 1.0;
|
||||
|
||||
vec2 uvAnimSca2 = (waterTex1 + disdis * sca2).st * windScale;
|
||||
//normalmaps
|
||||
vec4 nmap = texture2D(water_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0;
|
||||
vec4 nmap1 = texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0;
|
||||
vec4 nmap = texture2D(water_normalmap, uvAnimSca2) * 2.0 - 1.0;
|
||||
vec4 nmap1 = texture2D(perlin_normalmap, uvAnimSca2) * 2.0 - 1.0;
|
||||
|
||||
rotationmatrix(radians(3.0 * sin(osg_SimulationTime * 0.0075)), RotationMatrix);
|
||||
nmap += texture2D(water_normalmap, vec2(waterTex2 * RotationMatrix * tscale) * windScale) * 2.0 - 1.0;
|
||||
nmap1 += texture2D(perlin_normalmap, vec2(waterTex2 * RotationMatrix * tscale) * windScale) * 2.0 - 1.0;
|
||||
vec2 uvAnimTscale = (waterTex2 * RotationMatrix * tscale).st * windScale;
|
||||
|
||||
nmap += texture2D(water_normalmap, uvAnimTscale) * 2.0 - 1.0;
|
||||
nmap1 += texture2D(perlin_normalmap, uvAnimTscale) * 2.0 - 1.0;
|
||||
|
||||
nmap *= windEffect_low;
|
||||
nmap1 *= windEffect_low;
|
||||
|
|
@ -286,100 +303,89 @@ void main(void)
|
|||
|
||||
//load reflection
|
||||
vec4 tmp = vec4(lightdir, 0.0);
|
||||
vec4 refTex = texture2D(water_reflection, vec2(tmp + waterTex1) * 32.0) ;
|
||||
vec4 refTexGrey = texture2D(water_reflection_grey, vec2(tmp + waterTex1) * 32.0) ;
|
||||
vec4 refl ;
|
||||
vec2 refTexUV = (tmp + waterTex1).st * 32.0;
|
||||
vec4 refTex = texture2D(water_reflection, refTexUV) ;
|
||||
vec4 refTexGrey = texture2D(water_reflection_grey, refTexUV) ;
|
||||
vec4 refl = vec4(0.0,0.0,0.0,1.0) ;
|
||||
|
||||
// Test data
|
||||
// cover = 0;
|
||||
|
||||
if(cover >= 1.5){
|
||||
refl = normalize(refTex);
|
||||
refl.a = 1.0;
|
||||
refl.rgb = normalize(refTex).rgb;
|
||||
}
|
||||
else
|
||||
{
|
||||
refl = normalize(refTexGrey);
|
||||
refl.rgb = normalize(refTexGrey).rgb;
|
||||
refl.r *= (0.75 + 0.15 * cover );
|
||||
refl.g *= (0.80 + 0.15 * cover );
|
||||
refl.b *= (0.875 + 0.125 * cover);
|
||||
refl.a = 1.0;
|
||||
}
|
||||
|
||||
vec3 N0 = vec3(texture2D(water_normalmap, vec2(waterTex1 + disdis * sca2) * windScale) * 2.0 - 1.0);
|
||||
vec3 N1 = vec3(texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca) * windScale) * 2.0 - 1.0);
|
||||
// refl.rgb = mix(refl.rgb, floorColour, 0.99 * floorMixFactor);
|
||||
|
||||
vec4 N0 = texture2D(water_normalmap, uvAnimSca2) * 2.0 - 1.0;
|
||||
vec4 N1 = texture2D(perlin_normalmap, vec2(waterTex1 + disdis * sca) * windScale) * 2.0 - 1.0;
|
||||
|
||||
N0 += texture2D(water_normalmap, vec2(waterTex1 * tscale) * windScale) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, vec2(waterTex2 * tscale) * windScale) * 2.0 - 1.0;
|
||||
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex1 * tscale) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex2 * tscale) * windScale) * 2.0 - 1.0);
|
||||
|
||||
rotationmatrix(radians(2.0 * sin(osg_SimulationTime * 0.005)), RotationMatrix);
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex2 * RotationMatrix * (tscale + sca2)) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex2 * RotationMatrix * (tscale + sca2)) * windScale) * 2.0 - 1.0);
|
||||
vec2 uvAnimTscaleSca2 = (waterTex2 * RotationMatrix * (tscale + sca2)).st * windScale;
|
||||
N0 += texture2D(water_normalmap, uvAnimTscaleSca2) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, uvAnimTscaleSca2) * 2.0 - 1.0;
|
||||
|
||||
rotationmatrix(radians(-4.0 * sin(osg_SimulationTime * 0.003)), RotationMatrix);
|
||||
N0 += vec3(texture2D(water_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca2) * windScale) * 2.0 - 1.0);
|
||||
N1 += vec3(texture2D(perlin_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca) * windScale) * 2.0 - 1.0);
|
||||
N0 += texture2D(water_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca2) * windScale) * 2.0 - 1.0;
|
||||
N1 += texture2D(perlin_normalmap, vec2(waterTex1 * RotationMatrix + disdis * sca) * windScale) * 2.0 - 1.0;
|
||||
|
||||
if(detailFlag > 0)
|
||||
{
|
||||
N0 *= windEffect_low;
|
||||
N1 *= windEffect_low;
|
||||
//N0.r += (ddx + ddx1 + ddx2 + ddx3);
|
||||
//N0.g += (ddy + ddy1 + ddy2 + ddy3);
|
||||
|
||||
N0.r += ddxSum;
|
||||
N0.g += ddySum;
|
||||
|
||||
Normal = normalize(mix(Normal + N0, Normal + N1, mixFactor) * waveRoughness);
|
||||
Normal = normalize(mix(Normal + N0.rgb, Normal + N1.rgb, mixFactor) * waveRoughness);
|
||||
|
||||
if (normalmap_dds > 0)
|
||||
Normal = -Normal; //dds fix
|
||||
}
|
||||
|
||||
|
||||
// specular
|
||||
float NdotH = max(0.0, dot(Normal, H));
|
||||
vec3 specular_color = vec3(gl_LightSource[0].diffuse)
|
||||
* pow(max(0.0, dot(Normal, H)), water_shininess) * 6.0;
|
||||
* pow(NdotH, water_shininess) * 6.0;
|
||||
vec4 specular = vec4(specular_color, 0.5);
|
||||
|
||||
specular = specular * saturation * 0.3 ;
|
||||
|
||||
//calculate fresnel
|
||||
vec4 invfres = vec4( dot(vNorm, viewt) );
|
||||
float vNormDotViewT = dot(vNorm, viewt);
|
||||
vec4 invfres = vec4( vNormDotViewT);
|
||||
vec4 fres = vec4(1.0) + invfres;
|
||||
refl *= fres;
|
||||
|
||||
refl.rgb = mix(refl.rgb, floorColour, floorMixFactor);
|
||||
//calculate final colour
|
||||
vec4 ambient_light = gl_LightSource[0].diffuse;
|
||||
vec4 finalColor;
|
||||
|
||||
if(cover >= 1.5){
|
||||
finalColor = refl + specular;
|
||||
} else {
|
||||
finalColor = refl;
|
||||
}
|
||||
finalColor = refl + step(1.5, cover) * specular;
|
||||
|
||||
//add foam
|
||||
vec4 foam_texel = texture2D(sea_foam, vec2(waterTex2 * tscale) * 25.0);
|
||||
if (range > -10000.0){
|
||||
|
||||
vec4 foam_texel = texture2D(sea_foam, (waterTex2 * tscale).st * 50.0);
|
||||
float foamSlope = 0.1 + 0.1 * windScale;
|
||||
//float waveSlope = mix(N0.g, N1.g, 0.25);
|
||||
float waveSlope = Normal.g;
|
||||
|
||||
if (windEffect >= 8.0)
|
||||
float waveSlope1 = Normal.g * windFloorFactor * 0.65;
|
||||
float waveSlope2 = vNorm.r * windFloorFactor * 0.3;
|
||||
float waveSlope = waveSlope1 + waveSlope2;
|
||||
|
||||
if (waveSlope >= foamSlope){
|
||||
finalColor = mix(finalColor, max(finalColor, finalColor + foam_texel),
|
||||
smoothstep(0.01, 0.50, Normal.g));
|
||||
}
|
||||
|
||||
} // end range
|
||||
|
||||
smoothstep(7.0, 8.0, windFloorEffect)
|
||||
* step(foamSlope, waveSlope)
|
||||
* smoothstep(0.01, 0.50, waveSlope)) ;
|
||||
|
||||
finalColor *= ambient_light ;
|
||||
|
||||
//gl_FragColor = mix(gl_Fog.color, finalColor, fogFactor);
|
||||
finalColor.rgb = fog_Func(finalColor.rgb, fogType) ;
|
||||
gl_FragColor = finalColor ;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue