Am 23.10.2011 um 09:21 schrieb Abdelrazak Younes:
> On 23/10/2011 08:52, you...@lyx.org wrote:
>> Author: younes
>> Date: Sun Oct 23 08:52:03 2011
>> New Revision: 39932
>> URL: http://www.lyx.org/trac/changeset/39932
>>
>> Log:
>> Introduce new USE_QIMAGE macro to optionally use a QImage drawing backend
>> instead of a QPixmap. This may help when running locally under X11 with some
>> graphics cards (there were some complain about that in the user list).
>
> If this proves to really fix the slowness on some X11 with nvidia cards, we
> might want to introduce an option. Is there anybody suffering this issue?
Not me. But isn't it possible to make the QImage versus QPixmap a dependency on
local or remote X11 screen?
I didn't check if this info is available at runtime... perhaps you know that.
Stephan
>> Modified: lyx-devel/trunk/src/frontends/qt4/GuiWorkArea_Private.h
>> ==============================================================================
>> --- lyx-devel/trunk/src/frontends/qt4/GuiWorkArea_Private.h Sun Oct 23
>> 05:32:37 2011 (r39931)
>> +++ lyx-devel/trunk/src/frontends/qt4/GuiWorkArea_Private.h Sun Oct 23
>> 08:52:03 2011 (r39932)
>> @@ -12,6 +12,11 @@
>> #ifndef WORKAREA_PRIVATE_H
>> #define WORKAREA_PRIVATE_H
>>
>> +// Comment out to use QImage backend instead of QPixmap. This won't have any
>> +// effect on Windows, MacOSX and most X11 environment when running locally.
>> +// When running remotely on X11, this may have a big performance penalty.
>> +//#define USE_QIMAGE
>> +
>> #include "FuncRequest.h"
>> #include "qt_helpers.h"
>>
>> @@ -20,7 +25,11 @@
>>
>> #include<QAbstractScrollArea>
>> #include<QMouseEvent>
>> +#ifdef USE_QIMAGE
>> +#include<QImage>
>> +#else
>> #include<QPixmap>
>> +#endif
>> #include<QTimer>
>>
>> class QContextMenuEvent;
>> @@ -117,6 +126,23 @@
>> void updateCursorShape();
>> ///
>> void setCursorShape(Qt::CursorShape shape);
>> +
>> +#ifdef USE_QIMAGE
>> + void resetScreen()
>> + {
>> + screen_ = QImage(p->viewport()->width(),
>> p->viewport()->height(),
>> + QImage::Format_ARGB32_Premultiplied);
>> + }
>> +
>> + QImage screen_;
>> +#else
>> + void resetScreen()
>> + {
>> + screen_ = QPixmap(p->viewport()->width(),
>> p->viewport()->height());
>> + }
>> +
>> + QPixmap screen_;
>> +#endif
>> ///
>> GuiWorkArea * p;
>>
>> @@ -139,8 +165,6 @@
>> ///
>> CursorWidget * cursor_;
>> ///
>> - QPixmap screen_;
>> - ///
>> bool need_resize_;
>> ///
>> bool schedule_redraw_;
>
