start to new n-body particles, not yet working

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/acceleration.frag

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect acceleration;
+uniform sampler2DRect force;
+
+uniform float time; 
+uniform float timestep; 
+uniform float accLimit; 
+uniform float damping; 
+
+varying vec2 texcoord;	
+
+void main()
+{
+ 	vec3 accel =  texture2DRect( acceleration, texcoord ).xyz;
+ 	vec3 force =  texture2DRect( force, texcoord ).xyz;
+
+ 	accel += force;
+
+	float m = length(acc); 
+	if(m > accLimit)
+	{
+		accel = normalize(acc)*accLimit; 
+	}	
+
+  	gl_FragColor = vec4(accel, 1.0); 
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/acceleration.vert

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+varying vec2 texcoord;
+
+void main()  
+{  
+ 	texcoord = gl_MultiTexCoord0.st; 	
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
+} 

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/noise.frag

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect position;
+
+//uniform sampler2DRect acceleration;
+//uniform sampler2DRect velocity;
+
+//uniform float time;
+//uniform float timestep;
+//uniform float accLimit;
+//uniform float damping;
+
+varying vec2 texcoord;	
+
+
+
+//
+// Description : Array and textureless GLSL 2D/3D/4D simplex
+//               noise functions.
+//      Author : Ian McEwan, Ashima Arts.
+//  Maintainer : ijm
+//     Lastmod : 20110822 (ijm)
+//     License : Copyright (C) 2011 Ashima Arts. All rights reserved.
+//               Distributed under the MIT License. See LICENSE file.
+//               https://github.com/ashima/webgl-noise
+//
+
+vec4 mod289(vec4 x) {
+	return x - floor(x * (1.0 / 289.0)) * 289.0; }
+
+float mod289(float x) {
+	return x - floor(x * (1.0 / 289.0)) * 289.0; }
+
+vec4 permute(vec4 x) {
+	return mod289(((x*34.0)+1.0)*x);
+}
+
+float permute(float x) {
+	return mod289(((x*34.0)+1.0)*x);
+}
+
+vec4 taylorInvSqrt(vec4 r)
+{
+	return 1.79284291400159 - 0.85373472095314 * r;
+}
+
+float taylorInvSqrt(float r)
+{
+	return 1.79284291400159 - 0.85373472095314 * r;
+}
+
+vec4 grad4(float j, vec4 ip)
+{
+	const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);
+	vec4 p,s;
+
+	p.xyz = floor( fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;
+	p.w = 1.5 - dot(abs(p.xyz), ones.xyz);
+	s = vec4(lessThan(p, vec4(0.0)));
+	p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;
+
+	return p;
+}
+
+// (sqrt(5) - 1)/4 = F4, used once below
+#define F4 0.309016994374947451
+
+float snoise(vec4 v)
+{
+	const vec4  C = vec4( 0.138196601125011,  // (5 - sqrt(5))/20  G4
+						 0.276393202250021,  // 2 * G4
+						 0.414589803375032,  // 3 * G4
+						 -0.447213595499958); // -1 + 4 * G4
+
+	// First corner
+	vec4 i  = floor(v + dot(v, vec4(F4)) );
+	vec4 x0 = v -   i + dot(i, C.xxxx);
+
+	// Other corners
+
+	// Rank sorting originally contributed by Bill Licea-Kane, AMD (formerly ATI)
+	vec4 i0;
+	vec3 isX = step( x0.yzw, x0.xxx );
+	vec3 isYZ = step( x0.zww, x0.yyz );
+	//  i0.x = dot( isX, vec3( 1.0 ) );
+	i0.x = isX.x + isX.y + isX.z;
+	i0.yzw = 1.0 - isX;
+	//  i0.y += dot( isYZ.xy, vec2( 1.0 ) );
+	i0.y += isYZ.x + isYZ.y;
+	i0.zw += 1.0 - isYZ.xy;
+	i0.z += isYZ.z;
+	i0.w += 1.0 - isYZ.z;
+
+	// i0 now contains the unique values 0,1,2,3 in each channel
+	vec4 i3 = clamp( i0, 0.0, 1.0 );
+	vec4 i2 = clamp( i0-1.0, 0.0, 1.0 );
+	vec4 i1 = clamp( i0-2.0, 0.0, 1.0 );
+
+	//  x0 = x0 - 0.0 + 0.0 * C.xxxx
+	//  x1 = x0 - i1  + 1.0 * C.xxxx
+	//  x2 = x0 - i2  + 2.0 * C.xxxx
+	//  x3 = x0 - i3  + 3.0 * C.xxxx
+	//  x4 = x0 - 1.0 + 4.0 * C.xxxx
+	vec4 x1 = x0 - i1 + C.xxxx;
+	vec4 x2 = x0 - i2 + C.yyyy;
+	vec4 x3 = x0 - i3 + C.zzzz;
+	vec4 x4 = x0 + C.wwww;
+
+	// Permutations
+	i = mod289(i);
+	float j0 = permute( permute( permute( permute(i.w) + i.z) + i.y) + i.x);
+	vec4 j1 = permute( permute( permute( permute (
+												  i.w + vec4(i1.w, i2.w, i3.w, 1.0 ))
+										+ i.z + vec4(i1.z, i2.z, i3.z, 1.0 ))
+							   + i.y + vec4(i1.y, i2.y, i3.y, 1.0 ))
+					  + i.x + vec4(i1.x, i2.x, i3.x, 1.0 ));
+
+	// Gradients: 7x7x6 points over a cube, mapped onto a 4-cross polytope
+	// 7*7*6 = 294, which is close to the ring size 17*17 = 289.
+	vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0) ;
+
+	vec4 p0 = grad4(j0,   ip);
+	vec4 p1 = grad4(j1.x, ip);
+	vec4 p2 = grad4(j1.y, ip);
+	vec4 p3 = grad4(j1.z, ip);
+	vec4 p4 = grad4(j1.w, ip);
+
+	// Normalise gradients
+	vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
+	p0 *= norm.x;
+	p1 *= norm.y;
+	p2 *= norm.z;
+	p3 *= norm.w;
+	p4 *= taylorInvSqrt(dot(p4,p4));
+
+	// Mix contributions from the five corners
+	vec3 m0 = max(0.6 - vec3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0);
+	vec2 m1 = max(0.6 - vec2(dot(x3,x3), dot(x4,x4)            ), 0.0);
+	m0 = m0 * m0;
+	m1 = m1 * m1;
+	return 49.0 * ( dot(m0*m0, vec3( dot( p0, x0 ), dot( p1, x1 ), dot( p2, x2 )))
+				   + dot(m1*m1, vec2( dot( p3, x3 ), dot( p4, x4 ) ) ) ) ;
+
+}
+//END NOISE ---------------------------
+
+void main()
+{
+ 	vec3 pos = texture2DRect( position, texcoord ).xyz;
+
+ 	vec3 force = vec3(snoise(vec4(pos.xyz,1.0)),
+					  snoise(vec4(pos.zxy,1.0)),
+					  snoise(vec4(pos.yzx,1.0)));
+
+  	gl_FragColor = vec4(force, 1.0); 
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/noise.vert

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform float trailLength;
+varying vec2 texcoord;
+
+void main()  
+{  
+ 	texcoord = vec2(gl_MultiTexCoord0.s, gl_MultiTexCoord0.t * trailLength);
+	//texcoord = vec2(gl_Vertex.x, gl_Vertex.y * trailLength);
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
+} 

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/position.frag

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect position;
+uniform sampler2DRect velocity;
+uniform float dT;
+uniform float size; 
+
+varying vec2 texcoord;	
+
+void main()
+{    
+    vec3 pos =  texture2DRect( position,  texcoord ).xyz;
+    vec3 vel =  texture2DRect( velocity,  texcoord ).xyz;
+    pos += vel * dT; 
+    //if(pos.z < -size)
+    //{
+    //	pos.z = -size;
+    //}
+   	gl_FragColor = vec4(pos, 1.0);      	
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/position.vert

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+varying vec2 texcoord;
+
+void main()  
+{  
+ 	texcoord = gl_MultiTexCoord0.st; 	
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
+} 

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/render.frag

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+//uniform float spriteSize;
+
+varying vec2 texcoord;
+
+void main()
+{
+    gl_FragColor =  gl_Color;
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/render.vert

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect positions;
+//uniform sampler2DRect radiData;
+uniform float radiusMultiplier;      
+
+varying vec2 texcoord;
+
+void main()
+{
+//	texcoord = gl_MultiTexCoord0.st;
+	vec4 pos = texture2DRect( positions , gl_Vertex.xy);	
+//	vec4 radi = texture2DRect( radiData, texcoord.st);
+
+//	gl_PointSize = radi.x*radiusMultiplier;
+	gl_Position = gl_ProjectionMatrix * gl_ModelViewMatrix * pos;	
+	gl_FrontColor = gl_Color;     	
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/velocity.frag

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+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect velocity;
+uniform sampler2DRect acceleration;
+uniform float dT;
+//uniform float velLimit;
+//uniform float damping;
+
+varying vec2 texcoord;	
+
+void main()
+{        
+    vec3 vel =  texture2DRect( velocity,  texcoord ).xyz;
+    vec3 acc =  texture2DRect( acceleration,  texcoord ).xyz;
+    vel += acc * dT; 
+
+//    if(length(vel) > velLimit)
+//    {
+//    	vel = normalize(vel)*velLimit; 
+//    }
+//    vel *= damping;
+
+   	gl_FragColor = vec4(vel, 1.0);   	
+}

CloudsLibrary/src/VisualSystems/Nbody/bin/data/shaders/velocity.vert

@@ -0,0 +1,10 @@
+#version 110
+#extension GL_ARB_texture_rectangle : enable
+
+varying vec2 texcoord;
+
+void main()  
+{  
+ 	texcoord = gl_MultiTexCoord0.st; 	
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
+}