diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.opengl | 51 |
1 files changed, 25 insertions, 26 deletions
diff --git a/doc/README.opengl b/doc/README.opengl index 85fd68c85..99bbf93f9 100644 --- a/doc/README.opengl +++ b/doc/README.opengl @@ -1,10 +1,3 @@ -Please Note: - -The 'opengl' output plugin is still in alpha stage. -Expect crashes and strange behaviour. -Most times it seems to run fine, though. - - Startup ------- @@ -13,32 +6,38 @@ different color depth than you would prefer. Choose an appropriate visual with 'glxinfo' and select it with '-V opengl --visual xyz' in this case. -Known Problems --------------- +Problems you might encounter +---------------------------- -* Sometimes I only see a black screen and no image -* Sometimes xine crashes when changing the stream or the position in the stream +* Output is extremely slow - This seems to relate to some race conditions that are still present - in the current code. This will change in time. + Run 'glxinfo' and check the third output line saying 'direct rendering:' + If it doesn't say 'Yes', you are not running an accelerated OpenGL setup. + Check your installation. + Image_Pipeline based rendering is typically slower than 2D_Textures. + Note that OpenGL output is always slower than XVideo, and often faster + than X shared memory. - Jun. 25, 2002: I think this issue is resolved now. If you still encounter - any problems, please let me know. Otherwise I will remove this statement - in the future. +* xine complains about a memory leak -* There is a (small) memory leak - - This is known and - unfortunately - cannot be resolved right now. + This is known and - unfortunately - cannot be solved without changing + the user interface code. This will happen at least for xine-ui in the + near future. Background: The output plugin does not get notified, when the XWindow - is destroyed. But even when it would be notified, this wouldn't help, - as the OpenGL context could only be destroyed by the render thread. + is destroyed, and the OpenGL context can only be destroyed while the + drawable is still accessible. + -* Expose events just display a black image when playback is paused. +Known issues +------------ - This is known and cannot be resolved right now. - Background: The OpenGL context can only be used by the render thread and - not by the GUI thread. I tried to use a second context within the same - drawable, but this destabilized the plugin to an unusable state. +* GL_BGRA (used on little endian machines, i.e. ix86) needs an extension + check. This has not been implemented yet. +* Big endian machines have not been checked yet. +* VO_CAP_UNSCALED_OVERLAY reduces performance a lot during the first few + frames. +* Cropping is not yet implemented - this is done by video_out.c +* XINE_GUI_SEND_WILL_DESTROY_DRAWABLE not yet sent by any GUI, thus untested Matthias Hopf <mat@mshopf.de> |