unity shit

This is more or less the same as the last wall of code. However this time, we are using the Graphics draw to draw a quad, which consists of Four points, Two triangles. We need to adjust our buffer and create a new struct for this, as well as initialise our arrays in a specific way to ensure the quads are facing the correct direction.   As mentioned, our new Struct - Vertex stores a position, UV value and life. We're going to use the Compute Shader to calculate the postion of each particle-  but then draw a quad at that position. We set the specific values for the vertices in the compute shader too. (the UVs don't change for each quad, so we set that value in the C# script)     //Triangle 1 - bot left, top left, top right     vertexBuffer[index].position.x = p.position.x - halfSize;     vertexBuffer[index].position.y = p.position.y - halfSize;     vertexBuffer[index].position.z = p.position.z;     vertex...

A post for reference really... Not a lot of magic here - except we're using a Graphic procedural - a point- to draw particles. To do this we calculate the position of the particles in the compute shader, then a standard vert-frag shader assigned to a material reads from the gpu buffer and draws the points accordingly. We're also getting the mouse position on screen converted to World Space & having the particles follow that coordinate.  The C# is as follows, careful with the comments i've left...blogger's formatting is a bit wonky - using System.Collections; using System.Collections.Generic; using UnityEngine; #pragma warning disable 0649 public class particle_dave : MonoBehaviour {     private Vector2 cursorPos;     // struct of a particle, fairly simple attributes     struct Particle     {         public Vector3 position;         public Vector3 vel...

 A quick shader graph tidbit, lifted from https://www.codinblack.com/the-big-shader-graph-tutorial-second-part/ How to put a tweakable line on an object. Naturally this doesn't quite work with the VFX Graph.. As the position analyses per-object - ie, the whole VFX Graph, instead of per particle.