naive software renderer for learning purpose

• use all CPU cores but none of GPU
• shader based rendering (vertex shader and fragment shader are supported currently)

• draw a white triangle
  • basic triangle rasterizer
  • basic pipeline

• draw a triangle with interpolated color
  • calculate barycentric coords to interpolate vertex attributes

• draw a triangle with a perspective camera
  • implement mvp matrix transform
  • implement naive clipping (remove the triangle when one of its vertices is out of the frustum)
  • implement homogeneous division and screen mapping

• draw a white cube with a perspective camera

• draw a cube with diffuse shading
  • calculate normal vector using two edges of a triangle

• draw two cubes overlapping each other to demonstrate z-test is working
  • implement z-buffer and z-test