build script fixes, add ldflags build option update and enhance demos fix bug in 4x grid oversampling warn if writePNG called while compiled without libpng make shapes in ShapeList const and add many other const needed due to snowball effect slightly optimize Camera::makeRayPacket using _mm_shuffle_ps make Vector SIMD vectorization disabled by default (causes problems) fix bug in implicit reflection of transmissive surfaces, when surface's reflection parameter is set to zero

update README update Doxygen docs scons option 'msvc' changed to 'mingw' as msvc is default and mingw must be turned on explicitly

more build script tuning make all float constants single precision solve many warnings from msvc and gcc with various -W... flags add common.cc file for dbgmsg() function witch apparently cannot be inlined fix python module building with msvc, add manifest file handling remove forgotten RenderrowData class add stanford models download script for windows (.bat)

add MSVC compiler support, make it default for Windows new header file simd.h for SSE abstraction and helpers add mselect pseudo instruction for common or(and(...), andnot(...)) replace many SSE intrinsics with new names new MemoryPool class (mempool.h) for faster KdNode allocation remove setMaxDepth() from Octree and KdTree, make max_depth const, it should be defined in constructor and never changed, change after building tree would cause error in traversal modify DefaultSampler to generate nice 2x2 packets of samples for packet tracing optimize Box and BBox::intersect_packet add precomputed invdir attribute to RayPacket scons build system: check for pthread library on Windows check for SDL generate include/config.h with variables detected by scons configuration move auxiliary files to build/ add sanity checks add writable operator[] to Vector

packetize Phong shader new scons config options: simd=(yes|no) - allow/suppress explicit SSE force_flags=(yes|no) - force use of specified flags instead of autodetected profile=(yes|no) - enable gcc's profiling (-pg option) check for pthread.h header, don't try to build without it add fourth Vector3 component for better memory aligning rename Vector3 to Vector partialy SSE-ize Vector class (only fully vertical operations) build static lib and python module in distinctive directories to avoid collision of library file names on some platforms

rename Python module from 'raytracer' to 'pyrit' improve Python binding: - new objects: Container, Octree, KdTree, Shape, Pixmap, Sampler, DefaultSampler - all shapes are now subclasses of Shape - clean, remove redundant Getattr's - Raytracer render method now just wraps C++ method without doing any additional work adjust all demos for changes in Python binding, remove PIL dependency add demo_PIL.py as a example of pyrit + PIL usage render_nff.py now either loads file given as a argument or reads input from stdin otherwise fix bug in pixmap float to char conversion

use SSE for float to char image buffer conversion

merge pixmap handling from sampler, material.h and ccdemos's image module to new Pixmap class add check for PNG library, allow writing PNG file from a Pixmap simplify demos using new methods from Sampler and Pixmap

Sphere, Box - RayPacket intersection replace 5x oversampling with 4x uniform oversampling

BBox - RayPacket intersection clean up