lesson 6bis tangent space normal mapping w better triangle fxn

fun with shaders

the bug was int vs float depth

attempt at shader fails

clean main and gl, geometry has matrices, tgaimage uses rbga array, model has helper fxns

lesson 6 preview: copying base files

last commits were lesson 5

moving camera + goraud shading

lesson 4 success with new barymetric triangle fxn

lesson 4 perspective projection

diffuse texture

line update

new rasterizer + zbuffer

wireframe rendering

segment tracing: all integer Bresenham