Stuart Carnie
@stuartcarnie.bsky.social
InfluxData • Godot • OpenEmu • Swift • Rust • C++ • macOS • iOS • Metal • He / Him • Based in 🇦🇺
More flowers from the garden #flowerfridayfamily @jennycarnie.bsky.social
October 17, 2025 at 7:27 AM
More flowers from the garden #flowerfridayfamily @jennycarnie.bsky.social
September 28, 2025 at 5:46 AM
Great article on SDFs medium.com/@victorbaro/...
SDF in Metal: Adding the Liquid to the Glass
In the past I covered how to create a “simple” refractive glass effect using Metal shaders, as well as how to apply interesting overlay…
medium.com
September 12, 2025 at 9:52 PM
Great article on SDFs medium.com/@victorbaro/...
Writing a Metal 4 driver for @godotengine.org, and Xcode 26 RC doesn't support profiling Metal 4. Bring on Xcode 26.1!
September 9, 2025 at 8:33 PM
Writing a Metal 4 driver for @godotengine.org, and Xcode 26 RC doesn't support profiling Metal 4. Bring on Xcode 26.1!
Nice bump in fog volume performance for Apple GPUs github.com/godotengine/...
Metal: Use image atomic operations on supported Apple hardware by stuartcarnie · Pull Request #108028 · godotengine/godot
Metal is capable of atomic image operations on supported hardware, so this PR enables it at runtime when the support is available.
🗒️ Changes
Added image atomics feature to RenderingDevice
🚀 Chang...
github.com
July 2, 2025 at 9:04 PM
Nice bump in fog volume performance for Apple GPUs github.com/godotengine/...
I just had Claude write it's own MCP server in Python so that Claude can verify compilation in my @godotengine.org dev environment. Did all this in about 30 minutes from start to finish, having never written an MCP server before. Unreal.
June 7, 2025 at 12:09 AM
I just had Claude write it's own MCP server in Python so that Claude can verify compilation in my @godotengine.org dev environment. Did all this in about 30 minutes from start to finish, having never written an MCP server before. Unreal.
Want to support official builds of visionOS for @godotengine.org, but alas clang was failing to properly recognise visionOS availability (as a derivative of iOS) (github.com/llvm/llvm-pr...). Solution, patch llvm 😎
LLVM/Clang does not process visionOS (xros) availability correctly · Issue #142502 · llvm/llvm-project
The following snippet of Objective-C code, which declares the typedef as available on watchOS, and unavailable on iOS, macOS and tvOS platforms: #import <Foundation/Foundation.h> API_UNAVAILABLE(vi...
github.com
June 5, 2025 at 8:19 PM
Want to support official builds of visionOS for @godotengine.org, but alas clang was failing to properly recognise visionOS availability (as a derivative of iOS) (github.com/llvm/llvm-pr...). Solution, patch llvm 😎
My office view (and my home)
May 4, 2025 at 12:07 PM
My office view (and my home)
Latency macOS IPC (Mach ports, UDS and TCP), 64-byte messages, 100000 iterations:
```
Mach IPC latency: 4.13 µs
Mach IPC throughput: 15.48 MB/s
uds latency: 4.15 µs
uds throughput: 15.42 MB/s
tcp latency: 14.74 µs
tcp throughput: 4.34 MB/s
```
```
Mach IPC latency: 4.13 µs
Mach IPC throughput: 15.48 MB/s
uds latency: 4.15 µs
uds throughput: 15.42 MB/s
tcp latency: 14.74 µs
tcp throughput: 4.34 MB/s
```
May 4, 2025 at 4:17 AM
Latency macOS IPC (Mach ports, UDS and TCP), 64-byte messages, 100000 iterations:
```
Mach IPC latency: 4.13 µs
Mach IPC throughput: 15.48 MB/s
uds latency: 4.15 µs
uds throughput: 15.42 MB/s
tcp latency: 14.74 µs
tcp throughput: 4.34 MB/s
```
```
Mach IPC latency: 4.13 µs
Mach IPC throughput: 15.48 MB/s
uds latency: 4.15 µs
uds throughput: 15.42 MB/s
tcp latency: 14.74 µs
tcp throughput: 4.34 MB/s
```
@godotengine.org is getting first-class embedding support for macOS. The PR has some short clips showing full support: github.com/godotengine/...
macOS: Embedded window support. by stuartcarnie · Pull Request #105884 · godotengine/godot
Embedded window support for macOS.
This feature is implemented using CARemoteLayer, which is similar to how we implemented it for OpenEmu. This works by creating a CALayer in the child process and ...
github.com
May 2, 2025 at 7:28 AM
@godotengine.org is getting first-class embedding support for macOS. The PR has some short clips showing full support: github.com/godotengine/...
April 23, 2025 at 8:39 PM
Added dynamic buffer support to Metal for @godotengine.org, building on Matias' work. Observing an impressive improvement! github.com/godotengine/...
Add Persistent Buffers and Push Constants by darksylinc · Pull Request #103779 · godotengine/godot
This work is a heavily refactored and rewritten from TheForge's initial code.
TheForge's original code had too many race conditions and was fundamentally flawed as it was too easy to incur ...
github.com
March 15, 2025 at 8:52 PM
Added dynamic buffer support to Metal for @godotengine.org, building on Matias' work. Observing an impressive improvement! github.com/godotengine/...
March 14, 2025 at 8:59 AM
Reposted by Stuart Carnie
Family includes everyone! ❤️
November 17, 2024 at 9:40 PM
Family includes everyone! ❤️
Exciting release! I really enjoy the community and contributed Metal, MetalFX, 2D batching for new renderer and improvements to Apple game controllers.
Godot 4.4 beta 1 is finally here! This release had tons of editor quality of life features as well as performance improvements, we know you are going to love it. Oh, and I almost forgot to mention, we added embedded game debugging inside the editor! #godotengine
godotengine.org/article/dev-...
godotengine.org/article/dev-...
Dev snapshot: Godot 4.4 beta 1
Godot 4.4 is on its way! Please lend a hand by testing this beta release and reporting your findings.
godotengine.org
January 17, 2025 at 11:36 PM
Exciting release! I really enjoy the community and contributed Metal, MetalFX, 2D batching for new renderer and improvements to Apple game controllers.
Was recently introduced to atuin.sh and it is awesome.
Atuin - Magical Shell History
Sync, search and backup shell history with Atuin
atuin.sh
January 13, 2025 at 12:22 AM
Was recently introduced to atuin.sh and it is awesome.
Next build of Godot 4.4 will support MetalFX Spatial and Temporal scaling on Apple platforms github.com/godotengine/...
Metal: Add MetalFX upscaling support by stuartcarnie · Pull Request #99603 · godotengine/godot
Summary
Introduces support for MetalFX upscaling for macOS and iOS platforms. This expands the rendering/scaling_3d/mode property to allow specialisation for the macOS and iOS platforms:
Overview
...
github.com
January 7, 2025 at 1:05 PM
Next build of Godot 4.4 will support MetalFX Spatial and Temporal scaling on Apple platforms github.com/godotengine/...
Ghostty has been released ghostty.org/docs/install...
Binaries and Packages - Install
Install Ghostty without building it manually by downloading
and running a prebuilt binary or package.
ghostty.org
December 27, 2024 at 3:31 PM
Ghostty has been released ghostty.org/docs/install...
Improved game controller support on macOS and iOS for @godotengine.org github.com/godotengine/...
Apple: Bug fixes and improvements for game controllers by stuartcarnie · Pull Request #94580 · godotengine/godot
Game Controller support was refactored to resolve some bugs and such that it can be shared across macOS, iOS and tvOS. The code now lives in drivers/apple.
Summary
Fixed bugs in haptic support, th...
github.com
December 21, 2024 at 3:57 PM
Improved game controller support on macOS and iOS for @godotengine.org github.com/godotengine/...
The @godotengine.org Metal renderer now supports Apple4 GPUs (iOS 2017 era) devices with github.com/godotengine/...
Metal: Add support for 2017 era iOS devices by stuartcarnie · Pull Request #99820 · godotengine/godot
Closes #99682
Add support for Apple4 GPUs.
Tier 2 argument buffers are required for read / write texture support, specifically for iOS, so this PR introduces support for generating shaders and bind...
github.com
December 15, 2024 at 6:34 PM
The @godotengine.org Metal renderer now supports Apple4 GPUs (iOS 2017 era) devices with github.com/godotengine/...
Not sure what happened between macOS 15.2 beta and 15.2 RC, but the Godot Bistro demo went from 40 fps to 68 fps consistently.
December 6, 2024 at 10:39 PM
Not sure what happened between macOS 15.2 beta and 15.2 RC, but the Godot Bistro demo went from 40 fps to 68 fps consistently.
MetalFX upscalers for @godotengine.org are close. Very nice performance boost for temporal upscaling over FSR2 for Si github.com/godotengine/...
Metal: Add MetalFX upscaling support by stuartcarnie · Pull Request #99603 · godotengine/godot
Summary
Introduces support for MetalFX upscaling for macOS and iOS platforms.
Overview
These numbers are from a MacBook Pro M1 Max.
Bistro Demo
I'm capturing the Metal HUD logs, which includes ...
github.com
December 6, 2024 at 9:13 PM
MetalFX upscalers for @godotengine.org are close. Very nice performance boost for temporal upscaling over FSR2 for Si github.com/godotengine/...
Helped @mux213.bsky.social get the OpenXR simulator running on macOS using Metal in @godotengine.org
December 1, 2024 at 9:23 PM
Helped @mux213.bsky.social get the OpenXR simulator running on macOS using Metal in @godotengine.org
There is a new proposal for adding fixed-sized arrays to Swift github.com/swiftlang/sw...
github.com
November 15, 2024 at 9:12 PM
There is a new proposal for adding fixed-sized arrays to Swift github.com/swiftlang/sw...