Why shaders control visual rendering in Unity - See It in Action

Why shaders control visual rendering

📖 Scenario: You are creating a simple 3D scene in Unity where you want to understand how shaders affect the look of objects.

🎯 Goal: Build a Unity project that shows a cube with a basic shader, then modify the shader color to see how shaders control the cube's appearance.

📋 What You'll Learn

Create a cube GameObject in the scene

Create a basic shader with a color property

Apply the shader to the cube's material

Change the shader color property to see the visual effect

💡 Why This Matters

🌍 Real World

Shaders are used in games and apps to control how objects look, including colors, textures, and lighting effects.

💼 Career

Understanding shaders is important for game developers and graphics programmers to create visually appealing and optimized graphics.

1

Create a cube GameObject

In your Unity scene, create a GameObject called cube using GameObject.CreatePrimitive(PrimitiveType.Cube).

Unity

// Create a cube GameObject named cube
// Your code here

Need a hint?

Use GameObject.CreatePrimitive(PrimitiveType.Cube) to create the cube.

2

Create a basic shader with a color property

Create a new Shader called SimpleColorShader with a _Color property of type Color.

Unity

GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
// Create a shader named SimpleColorShader with a _Color property
// Your code here

Need a hint?

Use Shader.Find("Unlit/Color") to get a simple color shader.

3

Apply the shader to the cube's material

Create a new Material using SimpleColorShader and assign it to the cube's Renderer component's material.

Unity

GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

Shader SimpleColorShader = Shader.Find("Unlit/Color");
// Create a material with SimpleColorShader and assign it to cube's Renderer
// Your code here

Need a hint?

Create a Material with the shader and assign it to the cube's renderer.

4

Change the shader color property

Set the _Color property of cubeMaterial to Color.red to change the cube's color.

Unity

GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

Shader SimpleColorShader = Shader.Find("Unlit/Color");

Material cubeMaterial = new Material(SimpleColorShader);
cube.GetComponent().material = cubeMaterial;
// Set the _Color property of cubeMaterial to Color.red
// Your code here

Need a hint?

Use SetColor("_Color", Color.red) on the material to change the color.