https://github.com/macawls/opengl
A minimal, windows only self-contained OpenGL Demo!
https://github.com/macawls/opengl
glew glfw imgui opengl
Last synced: 21 days ago
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A minimal, windows only self-contained OpenGL Demo!
- Host: GitHub
- URL: https://github.com/macawls/opengl
- Owner: Macawls
- Created: 2023-08-11T13:01:52.000Z (about 2 years ago)
- Default Branch: cube
- Last Pushed: 2023-09-14T19:02:03.000Z (about 2 years ago)
- Last Synced: 2025-06-20T23:07:50.975Z (4 months ago)
- Topics: glew, glfw, imgui, opengl
- Language: C++
- Homepage:
- Size: 2.79 MB
- Stars: 1
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: .github/README.md
Awesome Lists containing this project
README
# Running
This project only works on Windows 64-bit 😎👍
**Download** the latest release on the [here](https://github.com/Macawls/OpenGL/releases/latest)
The exe is **portable**, simply double click it to run
# Setup
## Dependencies
* [GLFW](https://www.glfw.org/)
* [GLM](https://glm.g-truc.net/0.9.9/)
* [GLEW](https://glew.sourceforge.net/)
* [IMGUI](https://github.com/ocornut/imgui)
All dependencies are included in the source
## Compiling
1. Follow these [steps](https://code.visualstudio.com/docs/cpp/config-mingw) to setup MinGW-w64 via [MSYS2](https://www.msys2.org/) on Windows
2. Make sure you have python and g++ installed
3. Use `python compiler.py --help` for more information
### Help Menu
```txt
--run Run the executable
--clean Clean the build directory
--build Build the source
--release Builds for release
```
### Standard Commands
Standard Build
```shell
python compiler.py --build
```
Run after building
```shell
python compiler.py --build --run
```
Build for release (adds rc files, release flags, etc)
```shell
python compiler.py --build --release
```
## Tools and Misc
You can find various tools under the tools directory. Most of them are for converting files into an appropriate header file format for embedding.
### Custom Font for IMGUI
[Relevant ImGUI Source](https://github.com/ocornut/imgui/blob/master/misc/fonts/binary_to_compressed_c.cpp)
```powershell
.\binary_to_compressed.exe font.ttf font > font.h
```
Make sure the final file is encoded as UTF-8 👍
```cpp
ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF(
font_compressed_data,
font_compressed_size, fontSize);
```
### Converting Images
From the glfw [documentation](https://www.glfw.org/docs/3.3/group__window.html#gadd7ccd39fe7a7d1f0904666ae5932dc5),
The pixels are 32-bit, little-endian, non-premultiplied RGBA, i.e. eight bits per channel with the red channel first. They are arranged canonically as packed sequential rows, starting from the top-left corner"
I figured since ```stbi_load``` works seamlessly you can use the following binary to write image data to a .h file.
```bash
.\image_to_header.exe name.png output.h
```