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Mach core examples

All examples require this nominated Zig version | known issues

deferred-rendering

Dynamic lighting using deferred rendering techniques.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-deferred-rendering

~1300 lines of code

pbr-basic

Physically based rendering (PBR) materials

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-pbr-basic

~1000 lines of code

gen-texture-light

Generates a brick texture at comptime, uses Blinn-Phong lighting, and several pipelines. Move camera with arrow keys / WASD.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-gen-texture-light

~800 lines of code

procedural-primitives

Procedurally generated geometry, implements a few different shapes (use arrow keys to switch between them.)

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-procedural-primitives

~600 lines of code

pixel-post-process

A post-processing effect which pixelates the entire screen.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-pixel-post-process

~500 lines of code

sprite2d

Loads a JSON file which describes a spritesheet, and renders sprites to the screen.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-sprite2d

~400 lines of code

fractal-cube

Cube-inception! Renders the scene to a texture, which is then rendered on the rotating cube itself as a texture!

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-fractal-cube

~400 lines of code

cubemap

Renders a cubemap / skybox. Nothing fancy, but these are instrumental as backgrounds in games.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-cubemap

~400 lines of code

textured-cube

Loads a PNG image and uploads the texture to the GPU. Renders it on a 3D cube.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-textured-cube

~300 lines of code

image-blur

Leverages a compute shader to blur an image, then renders it. Don't worry if the details are a bit fuzzy!

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-image-blur

~300 lines of code

boids

Uses a GPU compute shader to run calculations / simulate flocking behaviour of birds.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-boids

~300 lines of code

two-cubes

Once you've learned how to render one cube, two is just 30 lines of code more!

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-two-cubes

~200 lines of code

instanced-cube

EVEN MORE CUBES! Instancing lets you duplicate an object & render it in multiple places with different parameters.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-instanced-cube

~200 lines of code

rotating-cube

Uploads a basic 3D cube to the GPU and renders it. Demonstrates how to use vertex buffers to transfer a model from the CPU to GPU, how to use vertex attributes & more.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-rotating-cube

~200 lines of code

triangle-msaa

Remember that triangle from before? If we turn on MSAA (Multi-Sample Anti Aliasing) the edges will become smooooth.

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-triangle-msaa

~100 lines of code

triangle

This is where you should start learning. It tells the GPU to render 3 vertices (but doesn't transfer them using a vertex buffer or anything! The vertex positions are hard-coded in the shader.)

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-triangle

~100 lines of code

map-async

Some of the best examples have no graphics. This one shows how to transfer data to the GPU, perform computations on that data using the GPU's parallel processing capabilities, and get results back on the CPU. If you're interested in GPU compute, this is the place to start!

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-map-async

~100 lines of code

clear-color

As simple as it gets: a blue screen of doom

git clone https://github.com/hexops/mach
cd mach/
zig build run-core-clear-color

~100 lines of code

Learning

You can start with the simplest examples first. There’s also plenty of great learning material online for WebGPU (including video tutorials.)

Lines of code	Example
79	clear-color
80	triangle
86	map-async
123	triangle-msaa
221	rotating-cube
230	instanced-cube
243	two-cubes
294	boids
322	image-blur
337	textured-cube
378	cubemap
381	fractal-cube
421	sprite2d
547	pixel-post-process
588	procedural-primitives
780	gen-texture-light
1040	pbr-basic
1342	deferred-rendering

Contribute

We're looking for more contributors to help us build and port a few more WebGPU examples to Zig. There's plenty of great learning material online for both rendering and compute.

Join our Discord server - we'd love to have you there and are happy to help!

Special thanks to these people who've contributed to these examples: