Commit Graph

8 Commits

Author SHA1 Message Date
KIU Shueng Chuan
09ce81655d VideoSpeedTest.py : Add numba checkbox 2021-05-07 15:35:27 +08:00
Martin Chase
f2b4a15b2d
Performance enhancement: use CUDA in ImageItem (#1466)
* Add CLI args to video speed test for easier / automated benchmarking

* use a buffer-qimage so we can avoid allocing so much

this should improve performance under windows

* playing with numba

* oh, mins/maxes in the other order

* maybe put the cupy in here and see what happens

* pre-alloc for gpu and cpu

* handle possibility of not having cupy

* no numba in this branch

* organize imports

* name them after their use, not their expected device

* cupy.take does not support clip mode, so do it explicitly

* add CUDA option to the VideoSpeedTest

* rename private attr xp to _xp

* handle resizes at the last moment

* cupy is less accepting of lists as args

* or somehow range isn't allowed? what histogram is this?

* construct the array with python objects

* get the python value right away

* put LUT into cupy if needed

* docstring about cuda toolkit version

* better handling and display of missing cuda lib

* lint

* import need

* handle switching between cupy and numpy in a single ImageItem

* only use xp when necessary

we can now depend on numpy >= 1.17, which means __array_function__-implementing cupy can
seamlessly pass into numpy functions. the remaining uses of xp are for our functions which
need to allocate new data structures, an operation that has to be substrate-specific.

remove empty_cupy; just check if the import succeeded, instead.

* use an option to control use of cupy

* convert cupy.ceil array to int for easier mathing

* RawImageWidget gets to use the getCupy function now, too

* raise error to calm linters; rename for clarity

* Add Generated Template Files

* document things better

* cruft removal

* warnings to communicate when cupy is expected but somehow broken

* playing with settings to suss out timeout

* playing with more stuff to suss out timeout

* replace with empty list

* skip test_ExampleApp on linux+pyside2 only

Co-authored-by: Luke Campagnola <luke.campagnola@gmail.com>
Co-authored-by: Ogi Moore <ognyan.moore@gmail.com>
2021-01-19 21:26:24 -08:00
Luke Campagnola
a0e4301b38 Fix VideoSpeedTest to disable RawImageGLWidget when openGL is unavailable 2016-10-26 09:26:01 -07:00
Luke Campagnola
7d32ef85be Added automatic image downsampling (disabled by default)
- Reduces aliasing when zoomed out
  - Improves performance and memory usage for large images
Merge branch 'image_downsampling' into develop

Conflicts:
	pyqtgraph/graphicsItems/ImageItem.py
2014-02-17 20:48:22 -05:00
Luke Campagnola
8d7ab108fd Fixed PySide issues by removing itemChange methods from GraphicsWidget and ViewBox;
Workaround is for ViewBox to see whether its scene has changed every time it paints.

Fixes: 12
2013-11-16 20:23:41 -05:00
Luke Campagnola
7cd3e663f9 experimental GL video widget
temporary fix for text parameter ignoring expanded option
Don't use os.EX_OK in pg.exit()
2013-07-10 00:02:16 -04:00
Luke Campagnola
e5f383fbb5 Bugfixes and updates to functions.py:
- generalized makeARGB API: can now process arrays of arbitrary shape.
  - affineSlice automatically converts vector arguments to array
  - new function applyLookupTable taken from makeARGB
  - isosurface function returns array
Updated VideoSpeedTest example to follow new makeARGB API

LayoutWidget: row argument now accepts 'next' as value
ParameterTree bugfix: avoid infinite recursion when accessing non-existent attributes
ViewBox: avoid exit error caused when cleanup callback is invoked while python is shutting down
2012-11-23 16:01:25 -05:00
Luke Campagnola
d4e8e2b883 Imported major changes from acq4 project. 2012-03-01 21:55:32 -05:00