Writing your own 2D Pixel Shader in Monogame for Absolute Beginners

[willmotil]

I wrote this one up long ago which shows how you can pass in a value to a shader to adjust the greyscale by pressing a key.

How to use a pixel shader with spritebatch. Minimal example GreyScale

// game1 DX desktop project. using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; namespace HowToPixelShaderWithSpriteBatch { public class Game1 : Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; Texture2D texture; Effect effect; float percent = 1.0f; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory =…

If you want to get a better idea of what is going on under the hood you may want to see how to do the same thing without spritebatch using quads directly which while is still 2d is a breath away from 3d.

Minimal example of drawing a quad into 2d space?

Re : edit. Ok i just thought i re-edit this and post up a couple better examples that i am more satisfied with myself and for posterity’s sake. Though there is still plenty of room to improve these they are pretty basic (look at the draw methods) with some extra stuff tossed in. They will be in two posts. The difference will be that one will use a spritebatch effect The other will use a custom effect. The custom effect will also have a very basic effect file. The similarity will be that th…