DEMOS APACHE OPENOFFICE IMPRESS CODE
DEMOS APACHE OPENOFFICE IMPRESS WINDOWS

This can lead to the effect that events that should be executed at the same time are executed with one or more frames in between. The slide show is implemented on top of a set of queues that execute events in a highly asynchronous way. Sadly, a highly irregular frame rate seems to be the normal case, not the exception. Animations appear smoother when shown with a constant frame rate. This is not so much a problem of something being to slow but that an animation looks somehow 'odd'. When the original duration is very short then the resulting duration can be a multiple of that. Due to the inner workings of the slide show animations are stretched in certain situations so that a minimal number of frames is shown.This is a problem only when the same animation exists in other applications and has a different (shorter) duration there. In practice there often are factors that lead to even smaller fps numbers. While in general this is necessary (there is no sense in even trying to render, say, 200 fps), values that are too small are one hard upper fps boundary.

DEMOS APACHE OPENOFFICE IMPRESS CODE

There is code both in the slideshow and the sd module that limits the number of frames per second. Artificial limitation of the number of frames per second (fps).use more high-level canvas primitives, gradients are a lot faster when not decomposed into polygon strips.avoid intermediate representations and conversions, by using the drawing layer primitives in slideshow as well.New XCanvas implementation based on pure OpenGL.

DEMOS APACHE OPENOFFICE IMPRESS WINDOWS

Rework of the directx canvas for windows to use native directx calls to render geometry instead of using the slow GDI+.

Hardware acceleration of rendering during slideshow is desirable.

Rendering of single frames takes too long when content is too complex.

Slide show performance problems can be categorized like this: It can as well be caused by wrong timing of theįrames so that animations are stretched to a multiple of their original duration.įinally the original duration may be longer than what users are accustomed to in other

If an effect appears toīe too slow than the long rendering time of individual frames is just one That the slide show is frame based, not continous. For this to understand you have to recall There are many aspects of the slide show performance and not everyone isĭirectly linked to 'low speed'. We are currently working on the visual performance of the slideshow in Impress. We currently evaluate possible bottlenecks and performance opportunities in the implementation of loading and saving the native OpenDocument xml formats in impress.

Demos apache openoffice impress