An implementation of software renderer

To better understand the traditional render pipeline, I referred to SunXLei's implementation of SRenderer, and modified some part of it according to my understanding. This renderer has a flexible camera which can move toward any direction and can load different models with adjustable emission effects. Moreover, I've added a lot of comments to make it easier to understand. (If you want to learn about PBR, please refer to the original author's SRenderer)

Blinn-Phong Shading

Main Features

• render obj models with tga textures
• movable camera
• Blinn-Phong shading
• back-face culling
• homogeneous clipping
• switching of orthogonal and perspective projection
• modifying FOV
• modifying shader's ambient, diffuse and specular ratio

Binaries for Usage

The pre-built binaries can be found in bin folder. You can start with binaries and obj assets. (Note: the obj folder should be placed in the parent directory of binaries)

Build

CMakeLists.txt file is provided Here is an example of building the exe:

For windows 11 with mingw64 compiler and cmake:

under project folder,

mkdir build
cd build
cmake -G "MinGW Makefiles" ..
cmake --build .

noticing that the exe file should be put in this way:

renderer
  ├─build
  │  └─renderer.exe
  ├─obj
  │  └─xxx

Control

mouse:

• Rotation: holding left mouse button
• Pan: holding right mouse button
• Zoom: mouse wheel(doesn't apply in orthogonal mode)

keyboard:

• up/down/left/right/forward/backward translation: q/e/a/d/w/s
• camera moving in eye-target mode: 1 (default)
• camera moving in FPS mode: 2
• increase fov: 3
• decrease fov: 4
• perpective projection: 5 (default)
• orthogonal projection: 6
• modify ambient intensity: 7
• modify diffuse intensity: 8
• modify specular intensity: 9
• switch to different scenes: ctrl+1/ctrl+2
• reset position: r

Reference

https://github.com/SunXLei/SRender

https://docs.gl/