c2b447610c
Unveränderter Ausgangsstand inklusive Masterprompt und Konzeptbildern unter assets/. .godot/ und docs/screenshots/ bleiben laut .gitignore unversioniert; letztere sind unter ../backups gesichert. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
52 lines
2.1 KiB
Text
52 lines
2.1 KiB
Text
shader_type spatial;
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render_mode diffuse_burley, specular_schlick_ggx;
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uniform vec4 base_color : source_color;
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uniform sampler2D stone_map : source_color, filter_linear_mipmap_anisotropic, repeat_enable;
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uniform bool foliage = false;
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uniform bool bark = false;
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uniform bool soil = false;
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uniform bool paving = false;
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varying vec3 world;
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varying vec3 world_normal;
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float hash(vec3 p) { p=fract(p*.1031); p+=dot(p,p.yzx+33.33); return fract((p.x+p.y)*p.z); }
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float noise(vec3 p) {
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vec3 i=floor(p),f=fract(p); f=f*f*(3.0-2.0*f);
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return mix(mix(mix(hash(i),hash(i+vec3(1,0,0)),f.x),mix(hash(i+vec3(0,1,0)),hash(i+vec3(1,1,0)),f.x),f.y),mix(mix(hash(i+vec3(0,0,1)),hash(i+vec3(1,0,1)),f.x),mix(hash(i+vec3(0,1,1)),hash(i+vec3(1,1,1)),f.x),f.y),f.z);
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}
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void vertex() {
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world=(MODEL_MATRIX*vec4(VERTEX,1.0)).xyz;
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world_normal=normalize(mat3(MODEL_MATRIX)*NORMAL);
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if(foliage) {
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float wind=sin(TIME*.8+world.x*.55+world.z*.32)*sin(TIME*.37+world.z*.6);
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VERTEX.x+=wind*.065*clamp(world.y*.3,.15,1.0);
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}
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}
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void fragment() {
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vec3 weights=pow(abs(world_normal),vec3(5.0)); weights/=max(dot(weights,vec3(1.0)),.0001);
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vec3 p=world*.23;
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vec3 stone=texture(stone_map,p.zy).rgb*weights.x+texture(stone_map,p.xz).rgb*weights.y+texture(stone_map,p.xy).rgb*weights.z;
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float grain=noise(world*21.0);
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float broad=noise(world*.8);
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float relief=dot(stone,vec3(.333));
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ALBEDO=base_color.rgb*mix(vec3(.65),vec3(1.6),stone);
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ROUGHNESS=.88;
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if(paving) { ALBEDO=base_color.rgb*mix(vec3(.82),vec3(1.3),stone); }
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if(soil) {
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ALBEDO=base_color.rgb*mix(.82,1.12,broad)*mix(.78,1.2,relief);
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ALBEDO=mix(ALBEDO,vec3(.12,.17,.075),smoothstep(.54,.8,broad)*.16);
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}
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if(bark) {
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float ridges=noise(world*vec3(13,1.2,13));
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ALBEDO=base_color.rgb*mix(.45,1.2,ridges)*mix(.8,1.08,grain);
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relief=ridges;
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}
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if(foliage) {
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ALBEDO=base_color.rgb*mix(.75,1.2,broad);
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ROUGHNESS=.79;
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BACKLIGHT=ALBEDO*.32;
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}
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vec3 n=NORMAL,dx=dFdx(VERTEX),dy=dFdy(VERTEX);
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vec3 rx=cross(dy,n),ry=cross(n,dx); float det=dot(dx,rx);
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vec3 gradient=dFdx(relief)*rx+dFdy(relief)*ry;
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if(!foliage) { NORMAL=normalize(abs(det)*n-sign(det)*gradient*(bark ? .025 : .016)); }
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}
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