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://un5h17xwgkzupmm5x310c9gpc4.julianrbryant.com/2012/11/maximizing-depth-buffer-range-and.html).

Roadmap

• Shadow volumes (https://umn0mtkzgkyvzbntrct0j18gc5tg.julianrbryant.com/volumetric-lights/, https://un5gmtkzgjqjmfnmg3fvfgr9.julianrbryant.com/BenjaminGlatzel/volumetric-lighting-for-many-lights-in-lords-of-the-fallen).
• Per-material array textures:
  • (https://un5gmtkzgjfbje6mhy854jr.julianrbryant.com/forums/topic/662654-best-practise-texture-atlas-38-vbo/?do=findComment&comment=5191703)
  • (https://un5gmtkzghdxchpdaquberhh.julianrbryant.com/opengl/wiki/Array_Texture)
• Re-implementing Forward+.
• More post-processing effects:
  • FXAA (https://umn12c9ru75pjyd1j7kapwtccxaz812z.julianrbryant.com/articles/30-07-2016_implementing_fxaa.html).
  • Chromatic aberration (https://un5q08ujg34d66ah3jaxqcmkfxvpe.julianrbryant.com/a/58412/74957).
• Switch to sampler objects.
• Some kind of GUI.
• Atmospheric scattering: (https://github.com/korgan00/TFG-Atmospheric-Scattering) or (https://un5mjz9j1akujqegv78wpvjg1cf0.julianrbryant.com/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 (https://umn0mtkzgjwveek1wv2xy9q51e3m2.julianrbryant.com/postgrads/alexis/planeExtraction.pdf). Gribb, Hartman (2001).
• Forward+: Bringing Deferred Lighting to the Next Level (https://un5r7panxv1wwdhwzbxbet7uafgdp0jbh65v1dr.julianrbryant.com/2015/04/forward_plus.pdf). Harada, McKee, Yang (2012).
• Solid Wireframe (https://umn22j18xhuv2en6wjzx0qgchqg96hdyqpqep.julianrbryant.com/SDK/10/direct3d/Source/SolidWireframe/Doc/SolidWireframe.pdf). Nvidia (2007).
• Physically Based Rendering (https://un5hru497bruqa8.julianrbryant.com/#!PBR/IBL/Specular-IBL)
• Variance Shadow Mapping (https://umn22j18xhuv2en6wjzx0qgchqg96hdyqpqep.julianrbryant.com/SDK/10.5/direct3d/Source/VarianceShadowMapping/Doc/VarianceShadowMapping.pdf)
• Tessellated Terrain Rendering with Dynamic LOD (https://umn2d91awvzhjhj3.julianrbryant.com/2015/01/tessellated-terrain/)