Book Image

Become a Unity Shaders Guru

By : Mina Pêcheux
5 (1)
Book Image

Become a Unity Shaders Guru

5 (1)
By: Mina Pêcheux

Overview of this book

Do you really know all the ins-and-outs of Unity shaders? It’s time to step up your Unity game and dive into the new URP render pipeline, the Shader Graph tool, and advanced shading techniques to bring out the beauty of your 2D/3D game projects! Become a Unity Shaders Guru is here to help you transition from the built-in render pipeline to the SRP pipelines and learn the latest shading tools. With it, you’ll dive deeper into Unity shaders by understanding the essential concepts through practical examples. First, you’ll discover how to create a simple shading model in the Unity built-in render pipeline, and then in the Unity URP render pipeline and Shader Graph while learning about the practical applications of both. You’ll explore common game shader techniques, ranging from interior mapping to adding neon outlines on a sprite or simulating the wobble of a fish. You’ll also learn about alternative rendering techniques, like Ray Marching. By the end of this book, you’ll have learned to create a wide variety of 2D and 3D shaders with Unity’s URP pipeline (both in HLSL code and with the Shader Graph tool), and be well-versed with some optimization tricks to make your games friendly for low-tier devices as well.
Table of Contents (23 chapters)
1
Part 1: Creating Shaders in Unity
3
Part 2: Stepping Up to URP and the Shader Graph
8
Part 3: Advanced Game Shaders
12
Part 4: Optimizing Your Unity Shaders
15
Part 5: The Toolbox

Discovering compute shaders and compute buffers

Compute shaders are quite a unique tool that has many applications, such as the rendering of procedurally generated shapes (see Figure 7.1, a screenshot taken from https://www.youtube.com/watch?v=WWI07UQbJ9E) or the large calculations in a complex system.

Figure 7.1 – Render of the Mandelbrot Set using compute shaders

Figure 7.1 – Render of the Mandelbrot Set using compute shaders

In the following sections, we will see what compute shaders are exactly, why they can be useful, how they work hand in hand with compute buffers to properly share data between the CPU and the GPU, and how they are structured.

What are compute shaders?

In a nutshell, compute shaders are a specific type of shader script that are meant to offload processing from the CPU to the GPU.

The main idea is that because the GPU runs code in parallel, it can achieve better performance for computationally intensive tasks and large amounts of data – typically, heavy rendering algorithms...