Applies the rendering results to the window screen by copying the pixelbuffer values to the screen surface.

Checks if the scene that you want to load is not the one that is currently loaded. If it isn't, then it deletes the current one and loads the new one.

Update Order is critical for correct culling

Vertex shader

Dummy constructors/destructors

Dummy constructors and destructors

Dummy constructors and destructors

On model creation all textures are loaded, the mesh is built and even an AABB is built.

Dummy constructors / Destructors

Dummy constructors / destructors

Dummy Constructor / Destructor

Transposed to get world-tangent transform You can transpose it instead of inverting it because it's orthogonal

Depending on the type of texture the data that is loaded must be transformed in different ways.

Constructors

Gets view direction in object space and uses it to check if the facet normal Is aligned with the viewdirection

Gets the list of visible models from the current scene Done every frame in case scene changes

Inside bounds described in perspective matrix calculation

Gets the screen surface I know this is "Old" SDL and it's not really recommended anymore But given that I am doing 100% cpu based rendering it makes s

Inits window with the display values crated at compile time

Candidate for future total overhaul into a SIMD function Why not now? Before doing this I have to do: 1.vectorize: Shader, vector3 class rewrite 2.Edg

BRDF functions

Uses ZYX convention for rotation

Gamma adjustment table precalculated for a 2.2 gamma value signficant ms gains from this!!

Handles all the current valid user events: 1. User requested quits 2. Keyboard presses 3. Mouse movement 4. Mouse clicks 5. Mouse wheel movement

Doing this check was slower than allowing overwrites on certain triangle edges so it's

TODO: separate into new class or function Config file parsing, gets all the important

Main OBJ parsing function

Loads the scene with the given ID. If the scene is empty it will declare it an unsuccesful load and attempt to quit early of the whole program

Moves the whole world to place the origin at the current camera position And wrt its direction

Early pixel buffer traversal test

1-15 values

Way too general, should probably change in the future since I think I'll only need 4x4 stuff and this technically allows for any n matrix. Traverse th

Scalar-vector operations

Print for debugging purposes

Assumes a symmetrical frustrum with euqal fov for horizontal and vertical Also uses the inverse z trick to in theory improve zbuffer precision

Only used for blinn shading within specular reflection calculations

Fills values along diagonal only

Closes down sdl and destroys window. SDL surface is also destroyed in the call to destroy window

Creates stringstream of string and subdivides it by the delimeter and returns a vector of the individual components of the string

Entry point to SDL

Starts up the scene manager and loads the default scene If for whatever reason the scene could not load any model, or there are none defined It just q

Initializes the window and obtains the surface on which we draw. Also first place where SDL is initialized.

sse2 integer IDCT. not the fastest possible implementation but it produces bit-identical results to the generic C version so it's fully "transparent".