hohkaminen alhaalta

src/shaders/fragment.frag

@@ -13,6 +13,15 @@ layout(location = 700) uniform vec3 test; // shapes test
 layout(binding = 0) uniform sampler2D u_ShapesTex; // uniform sampler2D shapes texture
 // float u_time = syncs[0];
 
+vec3 palette(float t){
+  vec3 a=vec3(0.46,0.2,0.94);
+  vec3 b=vec3(0.66,0.64,0.77);
+  vec3 c=vec3(0.91,0.62,0.97);
+  vec3 d=vec3(0.26,0.2,0.84);
+  return a+b*cos(6.28318*(c*t+d));
+}
+
+
 vec2 getUV() {
     const vec2 scale = vec2(0.00104166667, 0.00185185185);
     return gl_FragCoord.xy * scale - 1.0;
@@ -105,7 +114,7 @@ vec2 opU(vec2 d1, vec2 d2) {
 
 vec2 mapScene(in vec3 p) {
 
-    float res = 1e8;
+    float res = p.y;
     float mat = 0.;
 
     float hexRadius = 0.85;
@@ -428,6 +437,16 @@ vec3 render(vec2 uv) {
         col = shading(hitPos, nor, rayDir, t.y);
     }
 
+    //glow from the bottom
+    vec3 bGlowColor = palette(syncs[0] * .5); // color change
+    float bGlowDistance = 0.3;
+    vec3 p = camPos + t.x * rayDir;
+
+    vec3 bGlowLevel = bGlowColor * exp(-(p.y + 0.0) / bGlowDistance) * 9900.;
+    col += bGlowLevel;
+    col = clamp(mix(bGlowLevel, col, t.z), 0.0, 1.0);
+
+    // distance fog + bass thunder
     float fogAmount = 0.01;
     col = col * exp(-t.x * fogAmount) + applyFog(col, t.x, rayDir, vec3(0., -0.5, 1.8), fogAmount) * (1.0 - exp(-t.x * fogAmount));