92 lines
2 KiB
Text
92 lines
2 KiB
Text
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Shader "CrispyPin/Spheres"
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{
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Properties
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{
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[Header(Raymarcher Properties)]
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_MaxSteps ("Max steps", Integer) = 128
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_MaxDist ("Max distance", Float) = 128
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_SurfDist ("Surface distance threshold", Range(.0001, .05)) = .001
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}
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SubShader
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{
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Tags { "RenderType"="Opaque" }
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Cull Front
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LOD 100
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Pass
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{
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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int _MaxSteps;
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float _MaxDist;
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float _SurfDist;
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#define MAX_STEPS _MaxSteps
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#define MAX_DIST _MaxDist
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#define SURF_DIST _SurfDist
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#define SCENE_FN main
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#define LIGHT_FN lighting
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// #define SCENE_SCALE 1
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#define DISCARD_ON_MISS
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#include "lib/libgarbage.cginc"
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#define SPEED 1.5
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#define BOX_SIZE .15
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#define RADIUS BOX_SIZE*2
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float3 checkers(float3 p, float3 a, float3 b, float2 size) {
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float2 q = p.xz / size;
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q = int2(abs(q) + .5);
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int s = ((q.x + q.y) % 2);
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return s * a + (1 - s) * b;
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}
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SurfacePoint main(float3 p) {
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SurfacePoint d;
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const float COUNT_Y = 20;
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const float COUNT_R = 20;
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float lat = asin(p.y) * COUNT_Y;
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float long = atan2(p.z, p.x) * COUNT_R + _Time.y * 16;
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float r = length(p);
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// float grid = (1-abs(smoothstep(0, 0.5, sin(long))-0.5))*2 - 1;
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float grid = (1-abs(smoothstep(0, 0.5, sin(lat))-0.5))*2 - 1;
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d = mSphere(p, 0.21,
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mat(abs(rotY(p, _Time.y*-4)/0.21))
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// mat(lat, long, grid)
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);
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// float long
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lat = floor(lat+0.5)-0.5;
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long = floor(long+0.5)-0.5;
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float sx = sin(long);
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float sz = cos(long);
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float sy = sin(lat);
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d = qUnion(d, mSphere(p - normalize(float3(sx, sy, sz))*r, 0.1));
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return d;
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}
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float3 lighting(Ray ray) {
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float3 sun_dir = normalize(float3(2, 1, -1));
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if (ray.missed) {
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return lRenderSky(ray.dir, sun_dir);
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}
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float3 light = lSun(ray.normal, sun_dir);
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// light *= lShadow(ray.hit_pos + ray.normal * SURF_DIST, sun_dir, 50);
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light += lSky(ray.normal)*5;
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return 1;
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}
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ENDCG
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}
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}
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}
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