Removed last conditionals in Canny shader in favor of pre-computed logic and vector multiplication
Some refactoring of shader code. Attempt to link multiple shaders for modularity abandoned, since it is not supported in OpenGL ES 2.0
Fixed bugs in first step of SWT operation. Now works properly.
- Removed DepthBuffer and StencilBuffer classes in favor of RenderBuffer with a given type
- Fixed bugs in ray casting, now works properly
- Made attempt to let stencil buffer be filled directly by the Canny shader, but does not work yet