569 lines
12 KiB
Plaintext
569 lines
12 KiB
Plaintext
const int CurScene = 0x6;
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// Parameters from our host
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// x: Scene+Zeit
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// y: Hoehe
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// z: Aspec
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uniform vec3 Y;
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// All data of our world
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float cFac, CurTime, CurTime2, CurStep, pi2= 6.28319;//, CurScene;
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int m;
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vec2 CurNormal;
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vec3 cRes, rayDir, CurColor = vec3(0.), RayStep = vec3(0.);
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vec3 LightColor= vec3( 5., 4.5, 4.0);
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vec3 BackColor= vec3( 0.7, 0.9, 1.2);
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vec4 HitMaterial;
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vec2 rotate(vec2 v,float y)
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{
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return cos(y)*v+sin(y)*vec2(-v.y,v.x);
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}
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//repeat around y axis w times
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//void rp(inout vec3 p, float trans, float w)
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float repeatr(inout vec2 v,float x, float y)
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{
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float a= atan(v.y,v.x);
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float z=mod(a,y)-y*.5;
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v=(length(v))*vec2(cos(z),sin(z));
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v.x-=x;
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return a-z;
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}
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void repeat( inout float w, float y )
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{
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w= mod( w - y*.5, y ) - y*.5;
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}
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void repeate( inout float w, float y, float z )
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{
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w= max( abs(w)-z, mod( w - y*.5, y ) - y*.5);
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}
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/*float row( float w, float y)
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{
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return floor( ( w - y*.5 )/ y );
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}*/
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//radius of the torus/ radius of the ring
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/*float torus(vec3 p,float f)
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{
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return length(vec2(length(p.xz) - f,p.y));
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}*/
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/*float signedDistToBox( vec3 p, vec3 b )
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{
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vec3 di = abs(p) - b;
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float mc = maxcomp(di);
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return mc<0.0 ? mc : length(max(di,0.0));
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}*/
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float CBox( in vec3 p, in vec3 box, float rad )
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{
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return length( max( abs(p) - box + vec3(rad), 0.0 ) ) - rad;
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}
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float CBox2D( in vec2 p, in vec2 box, float rad )
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{
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return length( max( abs(p) - box + vec2(rad), 0.0 ) ) - rad;
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}
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/*float EndlessBar( vec2 p, float y, float z )
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{
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return length( max( abs(p) - vec2(y) + vec2(z), 0.0 ) ) - z;
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}*/
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/*float noise3D( vec3 p )
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{
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return fract( sin( p.x * 151.0 + p.y * 33.0 + p.z ) * 11.0 );
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}
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float smoothnoise(vec3 p)
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{
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vec2 e = vec2(1.0, 0.0);
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vec3 o= smoothstep(0.0,1.0,fract( p ));
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p= floor( p );
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vec4 n= mix(
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vec4(
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noise3D( p+e.yyy),//n000,
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noise3D( p+e.xyy),//n100,
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noise3D( p+e.yxy),//n010,
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noise3D( p+e.xxy)),//n110),
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vec4(
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noise3D( p+e.yyx),//n001,
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noise3D( p+e.xyx),//n101,
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noise3D( p+e.yxx),//n011,
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noise3D( p+e.xxx)),//n111),
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o.z);
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e = mix(n.xy, n.zw, o.y);
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return mix(e.x, e.y, o.x);
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}*/
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float plasm(float x, float a, float b,float c)
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{
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return sin(x+a+c*sin(x+b));
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}
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float smin( float a, float b, float k )
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{
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float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );
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return mix( b, a, h ) - k*h*(1.0-h);
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}
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float hash( vec2 p )
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{
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float h = dot(p,vec2(23.2,15.7));
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return fract(sin(h)*232.45);
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}
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float noise(vec2 p)
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{
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vec2 e = vec2(1.0, 0.0);
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vec2 i = floor( p );
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vec2 f = fract( p );
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f *= f*(3.0-2.0*f);
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return -0.5 + mix( mix( hash( i + e.yy ),
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hash( i + e.xy ), f.x),
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mix( hash( i + e.yx ),
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hash( i + e.xx ), f.x), f.y);
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}
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float wHeight()
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{
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if (CurScene > 9)
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{
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return -22.0;
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}
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else if (CurScene == 9)
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{
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return 11.0 - CurTime * 33.0;
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}
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else
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{
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return min( 11.0, -33.0 + 22.0 * Y.x - CurScene * 11.0);
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}
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return 11.0 - CurTime * 33.0;
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}
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float wdings(vec3 p, float t)
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{
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p.y -= wHeight();
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p.xy= rotate( p.xy, 2.3 * t );
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p.yz= rotate( p.yz, 1.9 * t );
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repeate(p.x, 10.0, 10.0);
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repeate(p.y, 10.0, 10.0);
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repeate(p.z, 10.0, 10.0);
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vec2 e = vec2(6.0, 0.5);
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float b = min(min(CBox(p, e.xyy, 0.2), CBox(p, e.yxy, 0.2)), CBox(p, e.yyx, 0.2));
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return smin(length(p) - 3.0, b, 1.0);
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}
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float f0(vec3 p)
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{
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float w = wdings(p, CurTime - 0.02);
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float d = rayDir.y < 0. ? (p.y + 0.3)/rayDir.y : 999.0;
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d= smin (max(p.y, d), p.y + w - 2.0, 2.0);
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if (CurScene > 9)
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{
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float Walk = (Y.x - 10.1) * 444.0;
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Walk = smoothstep( Walk - 166., Walk - 66.0, length(p.xz));
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d = p.y - Walk * 33.0 + 33. + 3.0 * (1.0 - Walk) * sin(length(p.xz) * 0.1 - CurTime * 66.0);
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}
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if (d > 0.5)
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{
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return d;
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}
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p *= 0.4;
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p.x += CurTime;
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return d + abs (0.2 * noise(p.xz));
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}
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float f0N(vec3 p)
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{
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float d = f0(p);
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if (d > 0.5)
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{
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return d;
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}
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p /= 0.1;
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p.x += CurTime;
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d += abs (0.005 * noise(p.xz));
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p.x += CurTime;
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d += abs (0.01 * noise(p.xz));
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p /= 2.8;
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p.x += CurTime;
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d += abs (0.02 * noise(p.xz));
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p /= 2.8;
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p.x += CurTime;
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d += abs (0.04 * noise(p.xz));
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return d;
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}
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float f1(vec3 p)
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{
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return wdings(p, CurTime);
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}
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float f2(vec3 p)
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{
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vec3 o = p;
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float b = length(o.xz) * 0.2;
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o.y -= 5.0 * b - 0.2 * b * b - 30.0;
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//repeate(o.y, 8.0, 16.0);
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repeatr(o.zx, 172.0 * Y.x - 1899.0, pi2 / 48.0);
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//o.z += 5.0 * hash(d);
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repeate(o.z, 44.0, 88.0);
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repeate(o.z, 4.0, 4.0);
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o.z = length(o.z) - 0.7;
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b = (o.z < 0.0 ? length( o.xy ): length( o )) - 1.0;
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o = p;
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o.y -= wHeight();
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o.xy= rotate( o.xy, 2.3 * CurTime );
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o.yz= rotate( o.yz, 1.9 * CurTime );
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float a = max(
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max(
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CBox(o, vec3(11.0,11.0,11.0), 1.0),
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1.0 - wdings(p, CurTime)),
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length(o) - 6.0 * (Y.x - 6.2))
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- plasm(0.3 * p.x, 8.0 * CurTime, 0.3 * p.y, sin(0.3 *p.z));
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a *= 0.5;
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if(CurScene > 9)
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return smin(a, b, 16.0);
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else if(CurScene > 8)
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return a;
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else
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{
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//float r = min(1.0, 1.0 + p.z + min( 0.0, Y.x * 44.0 - 377.0));
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float r = -min(-5.0, Y.x * 88.0 - 555.0) - p.z;
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r = 1. - (r < 0. ? 0. : 0.04 * r * r);
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p.x -= plasm(p.z * 0.3, 0.5, CurTime, 0.4);
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p.y -= 5.0 + plasm(p.z * 0.2, CurTime, 0.0, 1.2 + sin(CurTime));
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return smin( a, CBox2D(p.xy, vec2(r * 0.4, r), r * 0.4), 8.0);
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}
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}
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float f3(vec3 p)
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{
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repeatr(p.zx, 88.0, pi2 / 6.0);
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repeatr(p.zx, 33.0, pi2 / 12.0);
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float d = length(p.x);
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return max(p.z - d + pow(d, 1.1), p.y - 44.0);
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}
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float f(vec3 p)
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{
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return min( min( min( f0(p), f1(p) ), f2(p) ), f3(p) );
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}
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float fN(vec3 p)
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{
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return min( min( min(f0N(p), f1(p) ), f2(p) ), f3(p) );
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}
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void mat(vec3 p)
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{
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float z= 0.1;
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if( z > f1(p) )
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{
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z= f1(p);
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HitMaterial = vec4(-2.0, 3.0, 0.7, 1.1);
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CurColor = vec3(1.0,1.5,1.8 );
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CurStep= .1;
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}
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if( z > f2(p) )
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{
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z= f2(p);
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HitMaterial = vec4(-2.0, 0.8, 0.5, 1.2);
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CurColor = vec3(1.8,1.0,0.2);
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CurStep= 0.1;
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}
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if( z > f3(p) )
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{
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z= f3(p);
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HitMaterial = vec4(-1.0, 3., 0.8, 1.2);
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CurColor = vec3(.3,.2,.5);
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CurStep= .8;
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}
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if( z > f0(p) )
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{
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HitMaterial = vec4(-1.0, 9.0, 0.95, 1.0);
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CurColor = vec3(.0,.0,.0 );
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CurStep= 0.6;
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}
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}
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/*void ToRes(vec3 Color, float Factor)
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{
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cRes+= Color * cFac;
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cFac*= Factor;
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}*/
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vec3 lightSphere(vec3 normal, vec3 color, vec2 desc)
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{
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return smoothstep(desc.x, desc.y, dot(vec3( 0.86, 0.5, 0.0),normal)) * color;
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}
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void main()
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{
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//Z = (gl_FragCoord.xy / Y.zw) * vec2(Y.z/Y.w, 1);
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CurTime= fract(Y.x);
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//CurScene= Y.x - fract(Y.x);
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CurTime2= CurTime * CurTime;
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// Get the look direction for the current pixel (always look forwards)
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rayDir = vec3((gl_FragCoord.xy / Y.y - 0.5), 0.8);
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rayDir.x -= Y.z;
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//Kamera sitzt an dieser Position
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vec3 p = vec3( 0.0, 11.0, -CurTime * 33.0);
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if( CurScene < 1)
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{
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rayDir.yz= rotate( rayDir.yz, 1.5 - 2.0 * CurTime );
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rayDir.xz= rotate( rayDir.xz, 4.0 + CurTime);
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}
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else if( CurScene < 2)
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{
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p = vec3( -33.0, 6.0, -3.0);
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rayDir.yz= rotate( rayDir.yz, 0.2 );
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rayDir.xz= rotate( rayDir.xz, 4.4 );
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}
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else if( CurScene < 3 )
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{
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p = vec3( 0.0, 6.0, -22.0);
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rayDir.yz= rotate( rayDir.yz, 0.4 - 0.6 *CurTime );
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//rayDir.xz= rotate( rayDir.xz, 0.0 );
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}
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else if( CurScene < 4 )
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{
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p = vec3( -44.0, 8.0, -40.0);
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rayDir.yz= rotate( rayDir.yz, 0.0 );
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rayDir.xz= rotate( rayDir.xz, 4.5 + CurTime );
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}
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else if( CurScene < 5 )
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{
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////////////// Shader 1
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p= vec3( 11.0, 66.* (1.0 - CurTime * 0.7), 190.);
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rayDir.yz= rotate( rayDir.yz, 1.0 * (1.0 - CurTime * 0.5) );
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rayDir.xz= rotate( rayDir.xz, 3.0 );
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//CurTime2 = CurTime;
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}
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/*else if( CurScene < 6 )
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{
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p= vec3( -22.0, 11., 150.* (1.0 - CurTime * 0.1));
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rayDir.yz= rotate( rayDir.yz, 0.2 );
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rayDir.xz= rotate( rayDir.xz, 4.0 );
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//CurTime2 = CurTime;
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}*/
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else if( CurScene < 6 )
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{
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p= vec3( 11.0, 9.0, 111.* (1.0 - CurTime * 0.1));
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rayDir.yz= rotate( rayDir.yz, 0.3 );
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rayDir.xz= rotate( rayDir.xz, 2.0 + CurTime * 0.8 );
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}
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/*else if( CurScene < 8 )
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{
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p= vec3( -33.0, 7.0, 0.);
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rayDir.yz= rotate( rayDir.yz, 0.0 );
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rayDir.xz= rotate( rayDir.xz, 5.0);
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}*/
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else if( CurScene < 7 )
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{
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////////////// Shader 2
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p= vec3( 11.0, 33.* (1.0 - CurTime * 0.1), 11.);
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rayDir.yz= rotate( rayDir.yz, 1.0);
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rayDir.xz= rotate( rayDir.xz, 2.0 );
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}
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else if( CurScene < 8 )
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{
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p = vec3( -22.0, 6.0, 22.0);
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rayDir.yz= rotate( rayDir.yz, -0.2 );
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rayDir.xz= rotate( rayDir.xz, 4.2 );
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}
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else if( CurScene < 9 )
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{
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p= vec3( 11.0, 66.* (1.0 - CurTime * 0.3), 22.);
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rayDir.yz= rotate( rayDir.yz, 1.0);
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rayDir.xz= rotate( rayDir.xz, 3.0 );
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}
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else if( CurScene < 10 )
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{
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p = vec3( -22.0, 8.0, -22.0);
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rayDir.yz= rotate( rayDir.yz, CurTime * 0.4 - 0.3 );
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rayDir.xz= rotate( rayDir.xz, 5.3 );
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}
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else if( CurScene < 11 )
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{
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////////////// Shader 3
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p= vec3( -66., 60.0, 22.0);
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rayDir.yz= rotate( rayDir.yz, 0.6 );
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rayDir.xz= rotate( rayDir.xz, 4.4 );
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//CurTime = CurTime * 8.0 + 0.6;
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//CurTime2 = mod( CurTime, 1.0);
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}
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else //if( CurScene < 12 )
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{
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p= vec3( -33., 22.0 * (1.0-CurTime), 11.0);
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rayDir.yz= rotate( rayDir.yz, 0.5 );
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rayDir.xz= rotate( rayDir.xz, 5.0 );
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}
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/*else if( CurScene < 15 )
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{
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p= vec3( -99.0 * (1.0 - CurTime * 3.3), 88.0, -44.0);
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rayDir.yz= rotate( rayDir.yz, 0.6 + CurTime );
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rayDir.xz= rotate( rayDir.xz, 2.5 );
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CurTime = CurTime * 8.0 + 0.6;
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CurTime2 = mod( CurTime, 1.0);
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}
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else if( CurScene < 16 )
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{
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p= vec3( -99.0 * (1.0 - CurTime * 0.8 ), 12.0, 99.0);
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//rayDir.yz= rotate( rayDir.yz, 0.6 + CurTime );
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rayDir.xz= rotate( rayDir.xz, 4.5 );
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CurTime = CurTime * 8.0 + 0.6;
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CurTime2 = mod( CurTime, 1.0);
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}*/
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//CurScene= Y.x - fract(Y.x);
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rayDir = normalize(rayDir);
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cRes= vec3( .0,.0,.0 );
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cFac=1.0;
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//float t=smoothnoise( rayDir*666.0 )*0.1,y,z;
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//float t= 0.5 * plasm(999. * rayDir.x, 999. * rayDir.z, 999. * rayDir.y,999. * rayDir.z),y,z;
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float t= 0.0,y,z;
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m=0;
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HitMaterial = vec4(-3.0, 8.0, 0.98, 1.0);
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vec3 fog =
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lightSphere(rayDir, LightColor, HitMaterial.zw);// +
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//lightSphere(rayDir, BackColor, HitMaterial.xy);
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while(m++<2)
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{
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//bis zu einer Oberflaeche steppen
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//for (CurStep=1.0;t<999.0 && CurStep>t*.003;t+=0.01+max(0.0, CurStep),RayStep=rayDir*t )
|
|
float ii = 80.0;
|
|
for (CurStep=1.0;ii >=0.0 && t<999.0 && CurStep>t*.001;t+=CurStep,RayStep=rayDir*t,--ii )
|
|
{
|
|
CurStep = f(p+RayStep);
|
|
}
|
|
|
|
if (ii <= 1)
|
|
{
|
|
ii = 0.;
|
|
t = 999.3 ;
|
|
RayStep=rayDir*t;
|
|
break;
|
|
}
|
|
ii = smoothstep(44., 1., ii);
|
|
|
|
|
|
vec3 NextPos = p+RayStep;
|
|
|
|
//Startpunkt und Richtung fuer reflektierten Strahl;
|
|
p= NextPos;
|
|
|
|
CurNormal = vec2(0.04, 0.0);
|
|
vec3 n= vec3( fN(p + CurNormal.xyy) - fN(p - CurNormal.xyy), fN(p + CurNormal.yxy) - fN(p - CurNormal.yxy), fN(p + CurNormal.yyx) - fN(p - CurNormal.yyx) );
|
|
|
|
// float gradlen = length(n / (2 * CurNormal.x));
|
|
// float error = abs(gradlen - 1.0);
|
|
// gl_FragColor.xyz = mix(vec3(0.0, 1.0, 0.0), vec3(1.0, 0.0, 0.0), error);
|
|
// return;
|
|
|
|
//CurNormal = vec2(0.0, 0.0);
|
|
mat(p);
|
|
//n.xz += CurNormal;
|
|
n= normalize(n);
|
|
//CurStep ab hier == Reflektion !!!
|
|
|
|
if( t > 999.0)
|
|
{
|
|
if( m < 2)
|
|
{
|
|
HitMaterial = vec4(-3.0, 8.0, 0.98, 1.0);
|
|
}
|
|
break;
|
|
}
|
|
|
|
rayDir= reflect( rayDir, n );
|
|
|
|
//float ao(vec3 p, vec3 n, float d, float i) {
|
|
y= 8.0;
|
|
for (z=1.0;y>0.;y--)
|
|
{
|
|
z-=.5*(y-f(p+n*y))/exp2(y);
|
|
}
|
|
CurColor*= z;
|
|
CurColor*= lightSphere(rayDir, BackColor, HitMaterial.xy);
|
|
|
|
cRes+= cFac*mix(CurColor, fog, ii);//*(1.0-Reflect);
|
|
cFac*= CurStep;// Reflect * (1.0-t/tmax);
|
|
t= 0.5;
|
|
RayStep = rayDir * t;
|
|
}
|
|
|
|
gl_FragColor.xyz = smoothstep(11.92, 11.8, Y.x) * (cRes + cFac*
|
|
( lightSphere(rayDir, LightColor, HitMaterial.zw) +
|
|
lightSphere(rayDir, BackColor, HitMaterial.xy)));
|
|
//gl_FragColor.xyz = smoothstep(-12.0, -11.8, -Y.x) * mix((cRes + cFac*
|
|
// ( lightSphere(rayDir, LightColor, HitMaterial.zw) +
|
|
// lightSphere(rayDir, BackColor, HitMaterial.xy))), fog, fogAmount / 2.0);
|
|
}
|