Decals in a Foward renderer

AcidFaucent · December 8, 2019, 6:21pm

Here’s a gist that should be mostly complete:

gist.github.com

https://gist.github.com/JSandusky/6912f6ee3f5023fb29353dd63fcd6779

DecalMesh.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace DelveLib
{
    public class DecalMesh : IDisposable
    {

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I doubt it works out of the box, but it should be really close. Basically you pump a reference set of DecalFaces into Faces and then AddDecal does the work of clipping and appending that source data into a resolved set (as unindexed TRIANGLE_LIST).