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https://github.com/kosua20/herebedragons

A basic 3D scene implemented with various engines, frameworks or APIs.
https://github.com/kosua20/herebedragons

blender computer-graphics cycles dragon gba graphics-programming metal nds opengl ps2 rendering scenekit software-rendering unity webgl

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A basic 3D scene implemented with various engines, frameworks or APIs.

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# Here be dragons



> Hic sunt dracones.



This repository contains multiple implementations of the same 3D scene, using different APIs and frameworks on various platforms. The goal is to provide a comparison between multiple rendering methods. This is inherently biased due to the variety of algorithms used and available CPU/GPU configurations, but can hopefully still provide interesting insights on 3D rendering. You can check a video of most versions runnning [here (Youtube)](https://www.youtube.com/watch?v=Bbpu34S2bSI)



![](image.png)



The following versions are currently available:



- [OpenGL](https://github.com/kosua20/herebedragons/tree/master/opengl)

- [WebGL](https://github.com/kosua20/herebedragons/tree/master/webgl) 

- [Vulkan](https://github.com/kosua20/herebedragons/tree/master/vulkan) 

- [WebGPU](https://github.com/kosua20/herebedragons/tree/master/webgpu)

- [Metal](https://github.com/kosua20/herebedragons/tree/master/metal)

- [SceneKit](https://github.com/kosua20/herebedragons/tree/master/scenekit)

- [Godot](https://github.com/kosua20/herebedragons/tree/master/godot)

- [Unity](https://github.com/kosua20/herebedragons/tree/master/unity)

- [Unreal](https://github.com/kosua20/herebedragons/tree/master/unreal)

- [Blender Cycles](https://github.com/kosua20/herebedragons/tree/master/cycles)

- [Ptah](https://github.com/kosua20/herebedragons/tree/master/ptah) (a custom real-time renderer, see [the Github page](https://github.com/kosua20/PtahRenderer/))

- [Nintendo DS](https://github.com/kosua20/herebedragons/tree/master/nds)

- [Nintendo Game Boy Advance](https://github.com/kosua20/herebedragons/tree/master/gba)

- [PlayStation 2](https://github.com/kosua20/herebedragons/tree/master/ps2)  

- [PICO-8](https://github.com/kosua20/herebedragons/tree/master/pico8) 

- [Vectrex](https://github.com/kosua20/herebedragons/tree/master/vectrex) 

- [Glide](https://github.com/kosua20/herebedragons/tree/master/glide)



The following versions are (tentatively) planned:



- DirectX (12, and 9 or 11), OpenGL ES

- other console hardwares

- other engines

- another raytracing approach



In the directory of each version, you can find the source code, the corresponding resources (as each method has its own format/quality constraints), along with a readme describing the method and a few examples. 



## Resources

The scene is composed of four main elements:



- a plane representing the ground, with a pavement texture.

- a dragon (the Stanford dragon).

- a monkey head ('Suzanne') rotating around its vertical axis.

- a skybox surrounding the scene, textured with a cloudy sky.



Additionally, the sun is simulated by using a directional light, and the camera should be able to rotate around the scene.

The initial 3D models and textures are contained in the `opengl/resources` [directory](https://github.com/kosua20/herebedragons/tree/master/opengl/resources).



## Other implementations

Here you can find implementations using some of the above APIs combined with other programming languages, submitted by awesome people!



- An OpenGL + Python version, by cprogrammer1994: [herebedragons-python](https://github.com/cprogrammer1994/herebedragons-python). (see [#11](https://github.com/kosua20/herebedragons/issues/11))

- A Vulkan version, by vazgriz: [vk_dragons](https://github.com/vazgriz/vk_dragons).