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https://navoshta.com/metal-camera-part-1-camera-session/
Metal Camera Tutorial Part 1: Getting raw camera data
A lot of apps nowadays use iPhone and iPad cameras. Some even do pretty badass things with it (performance wise), like running each frame through a neural network or applying a realtime filter. Either way you may want to get as low as you can in terms of t
navoshta.com
Getting raw camera data
- Initialize AVCaptureSession
- Get AVCaptureDevice
- Add AVCaptureDeviceInput to Session
- Add AVCaptureVideoDataOutput to Session
- Start Session
Converting sample buffer to a metal texture
- Get each frame data from CMSampleBuffer
- Convert frame to a metal texture MtlTexture
Rendering a Metal Texture
- Initialize MTKView
- Implement shaders in Metal shading language
- Drawing
- Create MTLRenderPipelineState listing graphics shader functions you are intended to use.
- Create MTLcommandBuffer that will eventually dispatch your commands for execution by the GPU.
- Create MTLRenderCommandEncoder that will let you specify shader functions context, like provide input and output for each.
- Commit the commands
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