tested proper blurring of the trail

shaders/agents_cs.glsl

@@ -18,6 +18,8 @@ layout(push_constant, std430) uniform Params {
 } params;
 
 const float SPEED = 1.0;
+const float DEPOSIT = 0.5;
+
 
 float random(vec2 coords) {
    return fract(sin(dot(coords.xy, vec2(12.9898,78.233))) * 43758.5453);
@@ -78,7 +80,7 @@ void main() {
     agent_buffer.positions[id] = pos;
     agent_buffer.headings[id] = new_heading;
 
-    float new_v = current_v + 0.3;
+    float new_v = current_v + DEPOSIT;
     if (new_v > 1.0) new_v = 1.0;
 
     vec4 result = vec4(new_v, new_v, new_v, 1.0);