precision highp float; uniform vec2 resolution; uniform float time; uniform vec2 mouse; uniform sampler2D backbuffer; float pi = acos(-1.); #define TAU (atan(1.) * 8.) #define smin(a,b) (a+b-sabs(a-b))*.5 #define smax(a,b) (a+b+sabs(a-b))*.5 #define DONBURI_ID 0. #define TABLE_ID 1. #define HASHI_ID 2. #define RENGE_ID 3. mat2 rot(float a){return mat2(cos(a),sin(a),-sin(a),cos(a));} float sabs(float x) { //return sqrt(x*x+1e-4); return sqrt(x*x+1e-4); } mat3 RotMat(vec3 axis, float angle) { // http://www.neilmendoza.com/glsl-rotation-about-an-arbitrary-axis/ axis = normalize(axis); float s = sin(angle); float c = cos(angle); float oc = 1.0 - c; return mat3(oc * axis.x * axis.x + c, oc * axis.x * axis.y - axis.z * s, oc * axis.z * axis.x + axis.y * s, oc * axis.x * axis.y + axis.z * s, oc * axis.y * axis.y + c, oc * axis.y * axis.z - axis.x * s, oc * axis.z * axis.x - axis.y * s, oc * axis.y * axis.z + axis.x * s, oc * axis.z * axis.z + c ); } vec2 min2(vec2 a,vec2 b) { if(a.x < b.x) { return a; } return b; } float wirebox(vec3 p,vec3 s,float w) { p=abs(p); p-=s; if(p.x 50.)break; depth += d.x; } return vec2(-depth); } vec2 shadowmarch(vec3 cp , vec3 rd) { float depth = 0.; for(int i = 0; i< 128; i++) { vec2 d = map(cp + rd * depth); if(abs(d.x) < 0.01) { return vec2(depth,d.y); } depth += d.x; } return vec2(-depth); } vec3 setMatCol(float index,vec3 pos,vec3 N) { vec3 mat = vec3(1.,0.,1.); if(DONBURI_ID == index) { mat = mix(vec3(1.,0.,0.),vec3(1.,1.,1.),step(0.1,pos.y)); // mat = vec3(1.,0.,0.); }else if(TABLE_ID == index){ mat = vec3(.7,0.3,.5); mat = mix( simplex3d(pos * vec3(13.,1.,0.5)) * mat , mat,.7 ); }else if(HASHI_ID == index){ mat = vec3(0.3,0.,0.); }else if(RENGE_ID == index) { mat = vec3(1.); }else{ mat = vec3(1.); } return mat; } vec3 getReflect(vec3 cp,vec3 rd , float intensity,vec3 lpos,vec3 light) { vec2 d = march(cp,rd); vec3 o = vec3(0.); if(d.x > 0.) { vec3 light = normalize(vec3(0.0, 1.0, 0.)); vec3 pos = cp + rd * d.x; vec2 e = vec2(0.,0.01); vec3 N = -normalize(map(pos).x - vec3(map(pos - e.xyy).x,map(pos - e.yxy).x,map(pos - e.yyx).x ) ); float attenuation = intensity / ( .5 + .9 * length(pos - lpos) + .8 * pow(length(lpos - pos),2.) ); attenuation = 1.; vec3 mat = setMatCol(d.y,pos,N); //color = N; float diff = max(0.,dot(light,N) ) * attenuation; vec3 refv = reflect(light,N); //ref += texture(cubemap,refv).rgb; float sp = max(0.,dot(refv,-rd)); // sp = pow(sp,16.) * 1.; if(d.y == DONBURI_ID) { sp = pow(sp,100.) * 1.; } o = mat * diff; //o *= shadow; } return o; } void scene(vec2 infragCoord,in vec2 shift,out vec3 outcol) { vec2 p = (infragCoord.xy * 2.0 - resolution.xy) / min(resolution.x, resolution.y); p.y *= -1.; vec3 f = vec3(0.); vec3 cp = vec3(0.,-3.,-24.); cp.yz *= rot(-10.); vec3 target = vec3(0.,-.5,0.); vec3 cd = normalize(target - cp); vec3 cs = normalize(cross(vec3(0.,1.,0.),cd)); vec3 cu = normalize(cross(cd , cs)); float fov = 3.5; vec3 rd = normalize(cd * fov + cu * p.y + p.x * cs); // cp.z += time/2. * morph.w; vec3 col = vec3(1.); //vec3 light = normalize(vec3(0.7, 0.8, 0.7)); //light.xz *= rot(-1.4); vec3 lpos = vec3(21.2523,8.08423,1.19026); vec3 ltarget = vec3(-88.,98.,63.); vec3 light = normalize(ltarget - lpos); float attenuation = 0.; vec3 color = vec3 (0.,.5,1.); color = vec3(0.5); vec2 d = march(cp,rd); vec3 N = vec3(0.); vec3 mat = color; float tt = 1.; float diff = 0.; float sp = 0.; vec3 l = light; // l.xz *= rot(pi/3); float sun = max(0.,dot(l,rd)); float shadow = 1.; sun = pow(sun , 30.) * 2.4; vec3 o = vec3(1.); if(d.x > 0.) { vec3 pos = cp + rd * d.x; vec2 e = vec2(0.,0.001); vec3 N = -normalize(map(pos).x - vec3(map(pos - e.xyy).x,map(pos - e.yxy).x,map(pos - e.yyx).x ) ); float intensity = 1.; float attenuation = intensity / ( .01 + .03 * length(pos - lpos) + .001 * pow(length(lpos - pos),2.) ); mat = setMatCol(d.y,pos,N); // color = N; diff = max(0.,dot(light,N)) * attenuation; vec3 refv = reflect(light,N); vec3 ref = getReflect(pos + 0.1 * N , refv,intensity,lpos,light); sp = max(0.,dot(refv,-rd)); //sp = pow(sp,16.) * 1.; mat = setMatCol(d.y,pos,N); vec3 emission = step(1.8,length(mat)) * mat; // color = N; diff = max(0.,dot(light,N)) * attenuation; sp = max(0.,dot(refv,-rd)); sp = pow(sp,10.) * 1.3; if(d.y == DONBURI_ID) { sp = pow(sp,1.5) * 1.; }else if(d.y == HASHI_ID){ sp = pow(sp,5.) * 1.; }else if(d.y == RENGE_ID){ sp = pow(sp,2.) * 1.; }else if(d.y == TABLE_ID){ sp = pow(sp,1.) * 1.0; } shadow = shadowmarch(pos + N * 0.02 ,-light).x; shadow = step(shadow,0.01) * attenuation; color.rgb = mat; color.rgb = mat * diff + sp*1.; color.rgb =color.rgb * 1. + ref * color.rgb; float tt = d.x; tt = 1. - exp(-.003 * tt * tt ); //color.rgb *= shadow; float t = 0.; vec3 sky = vec3(1.); color.rgb += emission * 1.; if(mat.g == 1. && mat.r == 0.) { color = vec3(0.); } color.rgb = pow(color.rgb,vec3(.4545)); color.rgb = clamp(color.rgb , vec3(0.),vec3(1.)); } outcol += color.rgb; } void main(void) { vec3 outcol; if(!true) { for(int x = -1;x<2;x++) { for(int y = -1;y<2;y++) { scene(gl_FragCoord.xy,vec2(x,y)/resolution.xy,outcol); } } outcol /= 9.; }else{ scene(gl_FragCoord.xy,vec2(0,0)/resolution.xy,outcol); } gl_FragColor = vec4(outcol,1.); }

#renge-queen