MoRenderer

MoRenderer is a software rasterization renderer based on c++ 20. The main purpose of the project is to learn the principles of modern rendering. Currently only Windows is supported (uses win32 to display window and image)

Feature

• simple math library
  • vector library
  • matrix library
  • utility functions
• Programmable shader（writing in c++）
  • vertex shader
  • pixel shader
• culling & clipping
  • back-face culling: use the normal of the triangle plane
  • homogeneous clipping: clip is performed only for the near clipping plane
• z-buffer
  • depth testing
  • reverse z-buffer
• Edge Equation
  • traversal triangle using a bounding rectangle
  • the Edge Equation is used to perform the inside test of the triangle
  • Perspective correct interpolation
  • use Top-Left rule to handle boundary pixels
• texture sampling
  • use bilinear interpolation to get better texture effect
  • cubemap sampling
• orbital camera controls
  • Orbit
  • Pan
  • Zoom
  • Reset
• tangent space normal mapping
• ACES tone mapping
• shading model
  • Blinn-Phong shading
  • Physically Based Shading (use Cook-torrance BRDF)
• material inspector
  • use keyboard number to switch material inspector
  • Blinn-Phong material inspector
  • Physically Based Shading material inspector
  • wireframe rendering
• image-based lighting (IBL)
  • irradiance map
  • prefilter specular environment map
  • use cmgen to automatic generate the IBL resource
• skybox
  • place a plane on the far clipping plane
  • switch the skybox at runtime
• other control
  • switch the shading model at runtime
  • switch the model at runtime

Previews

Camera Control

PBR Material Inspector

Blinn-Phong Material Inspector

Switch Rendering Mode

Switch Assets

Wireframe && Clip && Skybox

Build

A CMakeLists.txt file is provided for generating project files using CMake

Visual Studio

mkdir build
cd build
cmake -G "Visual Studio 17 2022" ..
start Renderer.sln

Control

Camera Control

• Orbit: left mouse button
• Pan: right mouse button
• Zoom: mouse wheel \ Q E
• move model: W A S D
• Reset Camera: Space

Material Inspector Control

• Blinn-Phong shading: keyboard number 1-7
• Physically Based Shading: keyboard number 1-8
• Wireframe rendering：keyboard number 0

Assets Control

• Switch model: keyboard up/down
• Switch skybox: keyboard left/right

Reference

filament

stb_image.h

tiny_obj_loader.h

skywind3000's implementation of software renderer

SunXLei's implementation of software renderer

《Real-Time Rendering 4th》CN