elementmo / simplesoftwarerenderer Goto Github PK

1. Run the Program (Model files are big, so please wait...).
2. Click "Beethoven" or "Cube Icosahedron" or "Bunny" to switch models.
3. Click "Toon Shading" "Half-Tone Shading" "Gourand Shading" or "Phong Shading" to switch shading.
4. Enjoy!

You can see the results in ./imgs folder
You can find a runnable version in ./Debug

For each frame: I used three 2d arrays to stroe the result of rendering, like this:
int frameBufferR[width][height] = { 0 };
int frameBufferG[width][height] = { 0 };
int frameBufferB[width][height] = { 0 };
Then render these frameBuffers only when a mouse click event is called.

I created: struct Vertex // store and calculate vertex
struct Face // store face index
struct Color // store color in (0-255) format
struct Colorf // stroe color in (0-1) format
struct Geometry // stroe vertices, faces, colors, specular
class Model // load and stroe all geometries that a model file contains
class Zone // store a scene with 3 perspectives
struct IShader // basic structure of a shader
struct Button // stroe location, color, and string of a button
enum BtnState // states of a button

I used Barycentric Coordinate method, and implement it in these functions:
Vertex barycentric(Vertex A, Vertex B, Vertex C, Vertex P);
void draw_triangle_barycentric(Vertex* pts, IShader& shader);

I created 4 shaders:
GourandShader, ToonShader, PhongShader, and HalfToneShader
For Phong Shading, I added a bluish environment color, so models looks a little bit "Bluer"
And some basic shader functions for convinent:
step(float threshould, float val)
frac(float v)
saturate(float x)
smoothstep(float a, float b, float x)
circle(Vertex _st, float _radius)