77 lines
2.1 KiB
C#
77 lines
2.1 KiB
C#
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using System;
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.Universal;
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namespace GapperGames
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{
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public class CloudRenderPass : ScriptableRenderPass
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{
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private static Mesh mesh;
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private Material material;
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private const string profilerTag = "Test Pass";
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public CloudRenderPass(Material _mat)
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{
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material = _mat;
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}
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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//Setup variables and do null checks
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var cam = renderingData.cameraData.camera;
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CommandBuffer cmd = CommandBufferPool.Get(profilerTag);
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if (!mesh) mesh = GenerateQuad(10000000f);
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//Matrices -> ew
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float nearClipPlane = cam.nearClipPlane;
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cam.nearClipPlane = 50;
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var position = cam.transform.position + (cam.transform.forward * cam.farClipPlane * 0.9f);
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var matrix = Matrix4x4.TRS(position, cam.transform.rotation, Vector3.one);
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cmd.DrawMesh(mesh, matrix, material, 0, 0);
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cam.nearClipPlane = nearClipPlane;
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//Execute command buffer
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context.ExecuteCommandBuffer(cmd);
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CommandBufferPool.Release(cmd);
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}
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public override void OnCameraCleanup(CommandBuffer cmd)
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{
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if (cmd == null) throw new ArgumentNullException("cmd");
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}
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//Generates a circle mesh (except it has 4 vertices all at 90 degrees in a square shape)
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private static Mesh GenerateQuad(float size)
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{
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var m = new Mesh();
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size *= 0.5f;
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var verts = new[]
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{
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new Vector3(-size, -size, 0),
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new Vector3(size, -size, 0),
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new Vector3(-size, size, 0),
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new Vector3(size, size, 0)
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};
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var tris = new[]
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{
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0, 2, 1,
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2, 3, 1
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};
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m.vertices = verts;
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m.triangles = tris;
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return m;
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}
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}
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}
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