MP-APS

A modern OpenGL 3D rendering engine. The idea behind it is to be very simple to use: no weird abstraction layers, janky variable names, or massive 2000+ line classes. It's primarily a playground for me to implement (or at least try :P) different graphics programming techniques. Progress has been slow since I'm juggling full-time Univesity studies, work, and trying to be physically active. Eventually, I want to create a "scene-based" engine, where you can load up some model(s), add some fancy lights, and virtually explore it.

Compiling

Ubuntu (and similar)

bash install-deps-ubuntu.sh
make
cd build/
./MP-APS

Screenshots

Anti-aliased wireframe rendering:

Physically Based Rendering:

Image Based Lighting (IBL):

Bloom:

(OLD VERSION) CPU-based terrain generation using Perlin noise:

Features

Assimp model loading.
Post processing (HDR, vibrance, bloom).
Parallel AABB frustum culling.
XML engine configuration.
Support for #include directives in shaders.
Shader-based wireframe overlay.
Physically-based rendering.

WIP

Variance shadow mapping (soft shadows).
Depth-buffer optimization (https://outerra.blogspot.ca/2012/11/maximizing-depth-buffer-range-and.html).

Roadmap

Shadow volumes (http://www.alexandre-pestana.com/volumetric-lights/, https://www.slideshare.net/BenjaminGlatzel/volumetric-lighting-for-many-lights-in-lords-of-the-fallen).
Per-material array textures:
- (https://www.gamedev.net/forums/topic/662654-best-practise-texture-atlas-38-vbo/?do=findComment&comment=5191703)
- (https://www.khronos.org/opengl/wiki/Array_Texture)
Re-implementing Forward+.
More post-processing effects:
- FXAA (http://blog.simonrodriguez.fr/articles/30-07-2016_implementing_fxaa.html).
- Chromatic aberration (https://gamedev.stackexchange.com/a/58412/74957).
Switch to sampler objects.
Some kind of GUI.
Atmospheric scattering: (https://github.com/korgan00/TFG-Atmospheric-Scattering) or (https://ebruneton.github.io/precomputed_atmospheric_scattering/)

Pipe-dreaming

CDLOD Terrain.
Planetary rendering.
Global illumination (Cascaded Light Propagation Volumes).

Third Party Code

Assimp.
GLM.
GLAD.
GLFW.
stb_image.
pugixml.
GLM AABB wrapper: (https://github.com/iauns/cpm-glm-aabb).

Research Used

Fast Extraction of Viewing Frustum Planes from the World-View-Projection Matrix (http://www.cs.otago.ac.nz/postgrads/alexis/planeExtraction.pdf). Gribb, Hartman (2001).
Forward+: Bringing Deferred Lighting to the Next Level (https://takahiroharada.files.wordpress.com/2015/04/forward_plus.pdf). Harada, McKee, Yang (2012).
Solid Wireframe (http://developer.download.nvidia.com/SDK/10/direct3d/Source/SolidWireframe/Doc/SolidWireframe.pdf). Nvidia (2007).
Physically Based Rendering (https://learnopengl.com/#!PBR/IBL/Specular-IBL)
Variance Shadow Mapping (http://developer.download.nvidia.com/SDK/10.5/direct3d/Source/VarianceShadowMapping/Doc/VarianceShadowMapping.pdf)
Tessellated Terrain Rendering with Dynamic LOD (http://victorbush.com/2015/01/tessellated-terrain/)

htmlboss/OpenGL-Renderer