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tunneli vege, vettä tilalle

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This commit is contained in:
Petri Järvisalo
2024-07-29 15:15:52 +03:00
parent e8f64b78bb
commit 33e75f8760
2 changed files with 257 additions and 79 deletions
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144
shader.glsl
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@ -32,6 +32,14 @@ float noise(vec2 p, float scale )
hash( i + vec2(1.0,1.0) ), u.x), u.y);
}
float noise2( in vec2 p ) {
vec2 i = floor( p ), f = fract( p ), u = f*f*(3.0-2.0*f);
return -1.0+2.0*mix( mix( hash( i + vec2(0.0,0.0) ),
hash( i + vec2(1.0,0.0) ), u.x),
mix( hash( i + vec2(0.0,1.0) ),
hash( i + vec2(1.0,1.0) ), u.x), u.y);
}
float displacement( vec3 p )
{
return noise(10.*p.xy+u_time+1e3, 0.2) + 0.5*noise(10.*(p.xy+2.0)-u_time+1e3, .2);
@ -93,7 +101,10 @@ fogColor2 = vec3(.7, .4, .2), // fog color2
indirColor = vec3(.2, .1, .3), // indirect light color
light1Color = vec3(.9, .5, .7),
light2Color = vec3(.8, .7, .5),
chevronColor = vec3(.9, .3, 0.);
chevronColor = vec3(.9, .3, 0.),
SEA_BASE = vec3(0.0, 0.1, 0.2),
SEA_WATER_COLOR =vec3(0.8,0.9,0.6)*0.6;
// with duration d, startTime s and speed up with timeFact
float timedSine(vec3 i) {
@ -129,6 +140,13 @@ float prismAnim(vec2 i) {
//////////////
// SCENE //
//////////////
float sea_octave(vec2 uv, float choppy) {
uv += noise2(uv);
vec2 wv = 1.0-abs(sin(uv));
vec2 swv = abs(cos(uv));
wv = mix(wv,swv,wv);
return pow(1.0-pow(wv.x * wv.y,0.65),choppy);
}
vec2 map(vec3 p)
{
@ -206,8 +224,18 @@ vec2 map(vec3 p)
d = min(d,d2);
if (d==d2) mat = 3.0;
d2 = 1e3;
d2 = max(-sdCappedCylinder(p, 2.0, clamp((2.0 - (u_time*2.0 - 2.0*23.0)),0.,2.0)), sdCappedCylinder(p, .025, 1.6)+ displacement(p)*clamp(((u_time-24.0)*0.5), 0., 0.25));
d2 = 1e3;
float h = 0.0, d3, choppy=4., freq=0.6, amp=.2;
vec2 uv = p.xy;
for(int i = 0; i < 5; i++) {
d3 = sea_octave((uv+u_time)*freq,choppy);
d3 += sea_octave((uv-u_time)*freq,choppy);
h += d3 * amp;
uv *= mat2(1.6,1.2,-1.2,1.6); freq *= 1.9; amp *= 0.22;
choppy = mix(choppy,1.0,0.4);
}
d2 = max(-sdCappedCylinder(p, 2.0, clamp((2.0 - (u_time*2.0 - 2.0*23.0)),0.,2.0)), sdCappedCylinder(p, .025, 1.6) - h*0.15);
d2 = max(d2, sdCappedCylinder ( p, 0.3, 1.6));
d = min(d, d2);
if (d==d2) mat = 1.0;
@ -237,14 +265,35 @@ vec3 getNormal(vec3 p) {
return normalize(n);
}
float getLight(vec3 p, vec3 lightPos, float intensity, float shadow) {
vec3 l = normalize(lightPos - p), n = getNormal(p);
float getLight(vec3 p, vec3 lightPos, float intensity, float shadow, vec3 n) {
vec3 l = normalize(lightPos - p);
float dif = clamp(dot(n, l), 0., intensity),
d = rayMarch(p+n*.0025, l);
if(abs(d)<length(lightPos-p)) dif *= shadow;
return dif;
}
// lighting
float diffuse(vec3 n,vec3 l,float p) {
return pow(dot(n,l) * 0.4 + 0.6,p);
}
float specular(vec3 normal,vec3 lightPos,vec3 rayOrigin,float specular) {
float nrm = (specular + 8.0) / (PI * 8.0);
return pow(max(dot(reflect(rayOrigin,normal),lightPos),0.0),specular) * nrm;
}
vec3 getSeaColor(vec3 p, vec3 n, vec3 l, vec3 eye) {
float fresnel = clamp(1.0 - dot(n,-eye), 0.0, 1.0);
fresnel = min(pow(fresnel,5.0), 0.5);
vec3 reflected = vec3(0.0, 0.5, 1.),
refracted = SEA_BASE + diffuse(n,l,60.0) * SEA_WATER_COLOR * 0.3,
color = mix(refracted,reflected,fresnel);
color += vec3(specular(n,l,eye,60.0))*0.3;
return color;
}
vec3 applyFog(vec3 col, float t, vec3 rd, vec3 lightDir, float b ) {
vec3 fogColor = mix( fogColor1, // blue
fogColor2, // yellow
@ -323,9 +372,10 @@ vec3 sceneGate(vec2 uv)
if (d < 150.) {
// Lighting
vec3 p = ro + rd * d;
vec3 p = ro + rd * d,
n = getNormal(p);
float mat = map(p).y,
// Light 1 Arguments
// 1: Ray starting point
// 2: Light position
@ -333,10 +383,10 @@ vec3 sceneGate(vec2 uv)
// 4: Shadow intensity
// Light 2
dif = getLight(p, vec3( 10., 15., 25.), 1., .2);
dif = getLight(p, vec3( 10., 15., 25.), 1., .2,n);
col += dif * light1Color;
dif = getLight(p, vec3( 4., 2., -15.), 1., 1.);
dif = getLight(p, vec3( 4., 2., -15.), 1., 1.,n);
col += dif * light2Color;
// indirect lightning -> vec3 in normalize is light direction
@ -344,8 +394,9 @@ vec3 sceneGate(vec2 uv)
if(mat==0.)
col *= vec3(.3);
else if(mat==1.)
col *= vec3(0.,0.,.5); // + (noise(5.*(p.xy+2.)+u_time, -1.0) * noise(50.*(p.xy+2.), -0.4) + 0.5*noise(20.*(p.xy+2.0)-u_time, -0.5) * noise(5.*(p.xy+2.0), -0.75))*smoothstep(0.,0.75,(u_time-5.0)*0.1) + vec3(0.,0.,0.5*noise(10.*(p.xy+4.0)-u_time, -0.5));
else if(mat==1.){
col = getSeaColor(p, n, normalize(vec3(0.0,0.3,0.8)),normalize(rd)); //col = vec3(0.,0.,.5); // + (noise(5.*(p.xy+2.)+u_time, -1.0) * noise(50.*(p.xy+2.), -0.4) + 0.5*noise(20.*(p.xy+2.0)-u_time, -0.5) * noise(5.*(p.xy+2.0), -0.75))*smoothstep(0.,0.75,(u_time-5.0)*0.1) + vec3(0.,0.,0.5*noise(10.*(p.xy+4.0)-u_time, -0.5));
}
else if(mat==2.)
col *= vec3(.3, .1, .0); // - 0.2*noise((vec2(100.*p.x+300.,75.*p.z+150.0)), -2.2) * noise((vec2(15.*p.x+2.0,3.*p.z+2.)), -1.) + noise((vec2(15.*p.x+2.4,3.*p.z+2.)), -0.25);
else if(mat==3.)
@ -361,72 +412,7 @@ vec3 sceneGate(vec2 uv)
return postProcess(col);
}
void pMod1(inout float p, float size) {
p = mod(p + size*0.5, size) - size*0.5;
}
void getQ(inout vec3 q, float i, float speed, float radius) {
q.z -= .5;
q.xy *= rot2D(sin(speed*u_time*.25)*PI);
q.x -= radius * sin(i / PI);
q.y -= radius * cos(i / PI);
q.z += i * .01;
}
vec2 map2(vec3 pos) {
float d = 1e3, mat;
pMod1(pos.z, 1.);
for (float i = 0.; i < 90.; i++) {
vec3 q = pos;
getQ(q, i, -1., 3.);
float b = sdSphere(q, 0.05);
d = min(d, b);
if (d == b) mat = 0.;
q = pos;
getQ(q, i, 1., .3);
b = sdSphere(q, 0.01);
d = min(d, b);
if (d == b) mat = 1.;
}
return vec2(d, mat);
}
vec3 palette(float t) {
vec3 a = vec3(0.5, 0.5, 0.5),
b = vec3(1.0, 1.0, 1.0),
c = vec3(1.0, 1.0, 1.0),
d = vec3(0.0, 0.66, 0.33);
return a + b * cos(6.3 * (c*t+d));
}
float rayMarch2(vec3 ro, vec3 rd) {
float t = 0.,d;
for (int i = 0; i < 60; i++) {
d = map2(ro + rd * t).x;
t += d;
if (d < .002 || t > 20.) break;
}
return t;
}
vec3 sceneTunnel(vec2 uv) {
vec3 ro = vec3(0.,0.,u_time*2. ),
col = vec3(0., 0., .1),
rd = normalize(vec3(uv, .7));
float d = rayMarch2(ro, rd),
mat = map2( ro + rd * d).y;
if (d < 10.) {
if (mat == 0.) col = vec3( 0., .3, .6);
if (mat == 1.) col = palette(1. - .4*d);
}
return col;
}
void main() {
vec2 uv = (gl_FragCoord.xy * 2. - u_resolution.xy) / u_resolution.y;
if (u_time < 29.) {
gl_FragColor = vec4(sceneGate(uv), 1.);
} else {
gl_FragColor = vec4(sceneTunnel(uv), 1.);
}
void main() {
vec2 uv = (gl_FragCoord.xy * 2. - u_resolution.xy) / u_resolution.y;
gl_FragColor = vec4(sceneGate(uv), 1.);
}