huailiang / lgRenderEngine

soft render engine based on SDL2

A cross-platform software render engine based on SDL2

Requirement

• SDL2
• libpng

Environment

• xcode on osx
• vs2017 on windows

Build

1. you should be ensure cmake installed at your mac, and generate xcode project using command as:

git clone [e-mail]:huailiang/lgRenderEngine.git
cd lgRenderEngine
cd build
sh build_osx.sh

2. compile visual studio project on windows:

   cd build directory, and click build_vs2017.bat

Tips

1. libpng depends on zlib, so should be set -lz in "Other linker flags" at xcode project

2. in function transform_homogenize, y is reduced by 1 because SDL_RenderDrawPoint draw point start with left-top pivot.

Reinferences

tutor:

  1. guide outline

  2. Frustum Culling

  3. Bresenham draw-line

  4. triger center calcute

  5. transform matrix

resources: asset format

sdl: http://www.libsdl.org

libpng: http://www.libpng.org/pub/png/libpng.html

cmake: https://cmake.org/