3D Rendering Demo

Demo of various advanced 3D rendering techniques, implemented with SDL2 and OpenGL

Many of these techniques are based on the Advanced Lighting tutorials found here: https://learnopengl.com/

TODO

• Antialiasing
  • MSAA (Directly supported by OpenGL)
  • MSAA for secondary framebuffers with texture attachments
  • FXAA (or SMAA) (as MSAA is not (performantly) compatible with Deferred Shading)
• Basic Lighting
  • Point Lights
  • Directional Lights
• Advanced Lighting
  • Blinn-Phong Shading
  • Gamma Correction
  • Emissive Lighting
  • HDR
  • Bloom
  • Deferred Shading
  • SSAO
  • PBR
  • Image-Based Ambient Lighting
    • Diffuse Irradiance
    • Specular
• Environment Maps
• Add Control Panel rather than keyboard shortcuts

Requirements

• CMake (minimum version 3.5): https://cmake.org/install/
• SDL2: https://www.libsdl.org/download-2.0.php
• glew: http://glew.sourceforge.net/

How to build and run

On linux (not yet tested on macOS),

git clone git@github.com:mfirmin/rendering-demo.git
cd rendering-demo
mkdir build
cd build
ln -s ../assets .
cmake ..
make
./demo

Usage

• A: Toggle FXAA AntiAliasing (default on)
• L: Toggle Directional Lighting (default off)
• 1-4: Toggle Scene Lights (default off)
• S: Toggle Blinn-Phong shading on/off (default on)
• H: Toggle HDR (default on)
• E: Cycle through Exposure values (0.1, 0.2, 0.4, 0.8, 1.0, 2.0, 5.0, 10.0) (default = 1.0)
• G: Toggle Gamma Correction (default on)
• I: Cycle through different intensities (1, 2, 4, 8, 16) for light 1 (useful for seeing the effects of HDR)
• B: Toggle Bloom on/off (default off)
• O: Toggle SSAO on/off (default on)
• P: Toggle PBR on/off (default on)
• M: Cycle through PBR materials for model (metallic, glossy, rough, rough metal) (default: metallic)
• Z: Toggle IBL on/off (default on)

Credits

• Environment Maps:
• Ballroom - Sergej Majboroda (https://hdrihaven.com/)
• Grand Canyon - Blochi (http://www.hdrlabs.com/sibl/archive.html)