chroma - Chroma is a high performance optical photon simulation for particle physics detectors

Age	Commit message (Collapse)	Author
2011-07-10	added a hybrid monte carlo ray tracing rendering algorithm	Anthony LaTorre

2011-06-24	argument '-j' to threadtest.py now specifies a list of device ids to be ↵	Anthony LaTorre
	used. GPUThread objects now shallow copy the geometry so that threads are not writing to the same memory when the geometry is loaded onto the gpu. the model number for the 12" Hamamatsu PMT is R11708, not r7081 (which is the model for the 10" PMT); all references to the 12" PMT were changed accordingly. only allocate space for 20 materials and 20 surfaces on the gpu instead of 100 to save some space. started to modify track.py to build its own photons and module since the GPUThread object only copies photon hit times back from the gpu (not track information), but I am waiting to find out if pycuda GPUArrays can be used with vector types.
2011-06-24	speedup mesh intersection by skipping directly to the child node of nodes ↵	Anthony LaTorre
	with only one child.
2011-06-23	move photon initialization to the gpu. it's unclear if this is a speed ↵	Anthony LaTorre
	improvement.
2011-06-22	Start jittering the PMT times in the DAQ simulation.	Stan Seibert

2011-06-22	Switch from float4 to float3 for vertices.	Stan Seibert

2011-06-22	Fix accidental reuse of absorption_length when computing scattering length.	Stan Seibert

2011-06-21	Switch vertex list on GPU from a texture to a standard device array.	Stan Seibert
	This avoids the texture size limitation.
2011-06-21	A GPU-side "DAQ" implementation that identifies the first photon on each ↵	Stan Seibert
	channel, which is presumed to trigger that channel. Major speed up in conversion of detection times to time PDFs.
2011-06-20	pack material and surface indices into the fourth byte of the triangle array ↵	Anthony LaTorre
	on the GPU. you can now take a screenshot of an image rendered with view.py() by pressing the f12 key.
2011-06-19	reverse the face orientation on all triangles in the stl files exported from ↵	Anthony LaTorre
	sketchup.
2011-06-18	change curandstate array length to 100,000. gputhread.run() now correctly ↵	Anthony LaTorre
	initializes ALL of the states.
2011-06-17	visually tested optics code. added models of the inner and outer meshes for ↵	Anthony LaTorre
	the 12" hamamatsu and sno pmts. ratdb.py is able to parse ratdb files. chromaticity.py provides a function to map wavelength -> rgb color. lbne detector model now includes an outer black cylinder and pmts with a glass layer and photocathode/reflective surfaces.
2011-06-12	added some fun models; added some untested code to implement absorption, ↵	Anthony LaTorre
	scattering, reflection, and refraction
2011-06-07	Switch triangle texture to device array, use int32 and float32	Stan Seibert
	datatypes everywhere, and build final mesh without concatenation of lists. This allows for very large detectors, like full size LBNE.
2011-06-03	load material/surface index lookup arrays to the gpu and bind them to ↵	Anthony LaTorre
	textures. also, forgot to include the gpu code for material/surface structures
2011-06-03	load materials/surfaces onto the gpu	Anthony LaTorre

2011-06-02	material/surface codes or color are packed into the fourth byte of the ↵	Anthony LaTorre
	triangle data texture depending on the color keyword passed to Geometry.build()
2011-06-02	triangle mesh is now stored everywhere as a split list of vertices and triangles	Anthony LaTorre

2011-06-01	first step towards moving to a new mesh/solid/geometry structure	Anthony LaTorre

2011-05-27	kernel ran off the end of the ray array	Anthony LaTorre

2011-05-23	lbne model now imports python modules directly	Anthony LaTorre

2011-05-20	faster bounding volume hierarchy construction	Anthony LaTorre

2011-05-18	added test likelihood	Anthony LaTorre

2011-05-18	added some more documentation and a more accurate miniature version of lbne	Anthony LaTorre

2011-05-17	added documentation	Anthony LaTorre

2011-05-16	added stl mesh viewer	Anthony LaTorre

2011-05-15	cleanup. fixed tests	Anthony LaTorre

2011-05-15	new geometry class. beginning to implement physics by defining a material ↵	Anthony LaTorre
	class; each triangle will have a material linked to both of its sides
2011-05-13	use floats	Anthony LaTorre

2011-05-13	added a bounding volume hierarchy	Anthony LaTorre

2011-05-10	move triangles to mesh	Anthony LaTorre

2011-05-09	pull triangle vertices in kernel function	Anthony LaTorre

2011-05-09	improve triangle intersection algorithm by allowing it to terminate early	Anthony LaTorre

2011-05-09	use pixel pointer instead of pixel array	Anthony LaTorre

2011-05-09	slight speed increase	Anthony LaTorre

2011-05-07	tie fighter	Anthony LaTorre