galaxer och motion blur

src/Universe.App/Graphics/Shaders/cosmic.vert.glsl

@@ -0,0 +1,23 @@
+#version 330 core
+layout(location=0) in vec3 aPosition;
+layout(location=1) in vec3 aColor;
+layout(location=2) in float aSize;
+uniform vec3 uOrigin;
+uniform vec3 uAxisX;
+uniform vec3 uAxisY;
+uniform vec3 uAxisZ;
+uniform vec3 uForward;
+uniform vec3 uRight;
+uniform vec3 uUp;
+uniform float uAspect;
+uniform float uTanHalfFov;
+uniform float uNearFade;
+out vec3 vColor;
+void main(){
+    vec3 delta=uAxisX*aPosition.x+uAxisY*aPosition.y+uAxisZ*aPosition.z-uOrigin;
+    float d=length(delta),z=dot(delta,uForward);
+    vec2 xy=vec2(dot(delta,uRight)/uAspect,dot(delta,uUp))/uTanHalfFov;
+    gl_Position=z>0.0?vec4(xy,z*.999999,z):vec4(2,2,2,1);
+    gl_PointSize=clamp(aSize,1.0,4.5);
+    vColor=aColor*smoothstep(uNearFade,uNearFade*2.0,d);
+}