pcf development
minor updates to tutorial 42
Use shadow sampler in tutorial 42
Added ImageMagick initialization
cleanup
Bugfix - need to calculate world space and not clip space.
solve a quadratic equation to find the size of the bounding sphere
Fixed the calculation of the bounding sphere
Use WRAP when setting the stencil op
Fixed index ordering
Fixed a 3.x problem with framebuffers
Use GL_RGB for internal format instead of GL_RGBA
cleanup
Added VS files for tutorial 41.
Removed tutorial 43 files.
removed directory
Initial implementation of tutorial 43 with pass thru GS
render to cubemap works
Back to 2D for debugging
Render to a single face of the shadow map