Thomas Decroyère

Freelance software engineer.

Working on Elemental graphics library and Kanso (small micro kernel OS).

[We are Mass Effect - #SaveMassEffect @WeAreMassEffect]

The #SaveMassEffect petition has reached +175,000 signatures‼️

Our progress is remarkable, and we’re so close to our 200k goal. We reached 100k in less than three days. We can do it again.

We’re NOT backing down 💪

✍️ Sign the petition: https://t.co/AhcEFDBbd0

[Thomas Decroyère @tdecroyere]

@Kayane @Nacon @NaconFR Wouaw ! 😀

[Thomas Decroyère @tdecroyere]

I now have a first person camera system for my renderer. It can be controlled with keyboard/mouse or gamepad. 😊

#directx12 #vulkan #gamedev #indiedev #IndieGameDev

[Thomas Decroyère @tdecroyere]

I can now load the textures from the scene.

I have a separate Texture Compiler library that can generate mips and compress the texture to BC7.

In the 2 screenshots, the same view without/with basic lighting. No shadows yet.

#directx12 #vulkan #gamedev #indiedev #IndieGameDev

[Thomas Decroyère @tdecroyere]

I really need a new camera system because the model-viewer controls don't really work with a 3D scene. 😅

#gamedev #indiedev #IndieGameDev

[Thomas Decroyère @tdecroyere]

I have reworked my mesh loading code and I'm now able to load the famous Sponza model. It is the "Hello World" of 3D graphics programming. 😊

I'm loading the normal maps to have more detailed geometry. Next on the list is camera controls.

#gamedev #indiedev #IndieGameDev

[Thomas Decroyère @tdecroyere]

The mesh sample works on iOS 26 with motion controls. It shares the exact same C code than the desktop version.😊

The sample is written in C23. Check the source code here: https://t.co/cDBjYreusz

#gamedev #indiedev #IndieGameDev #apple #ios #ios26 #iphone

[Thomas Decroyère @tdecroyere]

@risc_v @thepine64 4️⃣ It switches to U-mode to run user code.
5️⃣ System calls or hardware interrupts switch the kernel to S-mode and return to U-mode afterward.

[Thomas Decroyère @tdecroyere]

While working on my hobby OS for RISC-V 64-bit, I struggled to find the correct boot sequence to make it run on real hardware.

I'm using the Star64 @risc_v board from @thepine64.

Here is the boot sequence when the image is loaded from an SD-Card:👇

#RISCV #indiedev #osdev #c

[Thomas Decroyère @tdecroyere]

@risc_v @thepine64 1️⃣ After CPU reset, U-Boot SPL runs in M-mode, brings up DRAM and loads OpenSBI.
2️⃣ OpenSBI completes early HW init, then drops to S-mode and jumps to the Kernel.
3️⃣ Kanso kernel (S-mode) will handle memory, scheduling & IPC.

[Thomas Decroyère @tdecroyere]

I've added functionality for the PS5 DualSense controller to my cross-platform gaming library. 😊

Feel free to explore the source code: https://t.co/gVv7J2nci7

#directx12 #vulkan #gamedev #IndieGameDev #dualsense

[Thomas Decroyère @tdecroyere]

This is what happens when something goes wrong while refactoring the geometry data layout. 😅

The sample is written in C23. Check the source code here: https://t.co/cDBjYreusz

#directx12 #vulkan #gamedev #IndieGameDev

[Thomas Decroyère @tdecroyere]

I have implemented input management that works on Windows, macOS and Linux.

To test it, what better way than to apply some cool motions to my 3D model viewer. 😊

The sample is written in C23. Check the source code here: https://t.co/cDBjYreusz

#directx12 #vulkan #gamedev

[Thomas Decroyère @tdecroyere]

My small micro-kernel OS written in C23 now has a GitHub automatic build pipeline that runs the tests with the emulator on supported architectures.

It also builds hardware images so I can just burn the image to an SD card to test the build.

#RISCV #C23 #UnitTesting #github

[Thomas Decroyère @tdecroyere]

I have implemented a basic OBJ file loader and I can render a 3D model with Mesh Shaders. It works on all platforms: DirectX12, Vulkan and Apple Metal.

The sample is written in C23, check the source code here: https://t.co/cDBjYreusz

#directx12 #vulkan #gamedev

[Thomas Decroyère @tdecroyere]

Writing low-level code in C23 doesn't mean you can't do unit testing.

I built a simple library with a few lines of code that lets you write unit tests that look like those in other test frameworks.

Check the source code here: https://t.co/VAQCpu0Eaf

#RISCV #C23 #UnitTesting

[Thomas Decroyère @tdecroyere]

Forgetting to include friction when calculating velocity or acceleration can lead to some truly unexpected results. 😅

#directx12 #vulkan #gamedev

[Thomas Decroyère @tdecroyere]

I've developed a compute shader sample for my graphics library, Elemental, using a beautiful fractal to test it.

It runs on Windows, Linux, MacOS, and iOS, and is written in C.

Check out the source code: https://t.co/AftA0TyElf

#directx12 #vulkan #gamedev

[Thomas Decroyère @tdecroyere]

Here is the repository of my hobby micro kernel for RISC-V written in C23.

https://t.co/R0qQgpcMkj

#RISCV

[Thomas Decroyère @tdecroyere]

I'm working on a microkernel for the RISC-V 64-bit architecture using C23 as a learning exercise.

I've successfully output text via UART on both QEMU and actual hardware! 😊

I'm using the Star64 RISC-V board from @thepine64.

It's a start. 🙂 #RISCV