Cel Shading | Part 5 - Finishing Touches
We can implement a texture lighting ramp for finer control over our lighting cutoff points and use different stencil IDs to prevent strange outline overlap issues.
Cel Shading | Part 4 - Edge Outlining
Outlines are a great way to emphasize the toon aesthetic, and we can add inverted hull outlines in a second pass.
Cel Shading | Part 3 - Bump Mapping and Fresnel Lighting
Normal maps let us add finer detailing on an object's surface and change the way lighting interacts with the object. Fresnel lighting helps objects stand out in a scene.
Cel Shading | Part 2 - Cel-shaded Lighting
By introducing a hard cutoff point in the lighting ramp, we can render cel-shaded lighting, which makes objects look cartoony.
Cel Shading | Part 1 - Diffuse Lighting
Unity provides ways of accessing information about lights in the scene, and we can use the vector dot product to calculate the amount of illumination on the surface.
Cel Shading | Part 0 - Lighting Models
We use simplified models to approximate the way real light behaves. By splitting light into ambient, diffuse, and specular components, we can calculate light efficiently.
Image Effects | Part 7 - Wrapping Up
In this article, we'll explore several shader concepts, including space transformations, structs, textures, shaders functions, and color spaces.
Image Effects | Part 6 - Painting Joy
The Kuwahara filter removes noise from images, but it can also be used stylistically for an oil painting-like effect.
Image Effects | Part 5 - Retro Arcade
Retro consoles had a limited resolution and color palette, which we can recreate in Unity by downsampling and posterizing the screen.
Image Effects | Part 4 - Edgy Talk
The Sobel filter is great at detecting edges, and we can use its output to outline objects in the scene or make everything look like it's neon-lit.
Image Effects | Part 3 - Blurring Algorithms
Box blur and Gaussian blur are two popular blurring algorithms. We can make these blurs significantly more efficient by using two passes, because they are linearly separable.
Image Effects | Part 2 - Getting Deep
With the depth buffer, we can color objects lighter or darker based on how far they are from the camera for a simple silhouette effect.
Image Effects | Part 1 - Colour Transforms
One of the simplest image effects involves basic color mapping. Greyscale filters map from RGB to a single value, while sepia tone uses a matrix of values for a new RGB color.
Image Effects | Part 0 - Shader Primer
In this article, we'll go through a crash course on writing image effect shaders for Unity's built-in render pipeline.