Unity-Shaders.md

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Unity + Shaders

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Introduction

• A shader is a set of graphics and image manipulation instructions run on the GPU
• A CPU runs serial operations while a GPU runs parallel operations (at the same time=faster)

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Shader Types

1. Vertex - Draws the vertices of the geometry
2. Geometry - Use to manipulate the geometry
3. Pixel (or fragment) - Fills the area in the geometry (fragment contributes to the final color of the pixel)
4. Compute - General purpose (outside of the shader pipeline)
5. Tesselation / Hull - Used to subdivide a mesh (fixed function shaders embedded in the hardware)

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Basic Operation

If you draw an object, say a triangle, on the screen...

1. First you draw the vertices
2. Mesh then primitives

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Vertex Shaders

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Pixel Shaders

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References

Tutorial Series

• Wilmer Lin Unity SHADERGRAPH
• What is a shader? (Shaderdev.com)

Topics

• How to create a gradient with Unity's Shader Graph? 2020
• Brackeys Basics of Shader Graph