Q: puzzle about the index of PrepareAccess
Dear all, In xserver 1.9.0, there is an access array to cache previous results to reduce cost. Howver, this optimization would modify the original index and give the wrong index to driver PrepareAccess. Also, sometimes driver PrepareAccess need to know the pixmap is used to be read or written. Now, nobody can confirm that the driver PrepareAccess can get the right index now. Can someone exaplain this? Thanks! Best wishes, Fancy ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Re: Q: puzzle about the index of PrepareAccess
So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/3 fancy fang fancyfl...@gmail.com So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/3 fancy fang fancyfl...@gmail.com So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/2 Maarten Maathuis madman2...@gmail.com On Thu, Dec 2, 2010 at 10:48 AM, fancy fang fancyfl...@gmail.com wrote: Dear all, In xserver 1.9.0, there is an access array to cache previous results to reduce cost. Howver, this optimization would modify the original index and give the wrong index to driver PrepareAccess. Also, sometimes driver PrepareAccess need to know the pixmap is used to be read or written. Now, nobody can confirm that the driver PrepareAccess can get the right index now. Can someone exaplain this? Thanks! Best wishes, Fancy ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel In principle any index can be used to read and write. Often SRC and MASK will only be read and DST will be read-write (this also goes for the AUX indices), but it is possible for a pixmap to get a random index. Does that answer your question? Maarten. Maarten. ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Re: Q: puzzle about the index of PrepareAccess
So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/3 fancy fang fancyfl...@gmail.com So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/3 fancy fang fancyfl...@gmail.com So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/3 fancy fang fancyfl...@gmail.com So, according to your explaination, the driver PrepareAccess can not know exactly whether the pixmap is used to read or write. Well, what's the usage of the index passed to driver PrepareAccess? 2010/12/2 Maarten Maathuis madman2...@gmail.com On Thu, Dec 2, 2010 at 10:48 AM, fancy fang fancyfl...@gmail.com wrote: Dear all, In xserver 1.9.0, there is an access array to cache previous results to reduce cost. Howver, this optimization would modify the original index and give the wrong index to driver PrepareAccess. Also, sometimes driver PrepareAccess need to know the pixmap is used to be read or written. Now, nobody can confirm that the driver PrepareAccess can get the right index now. Can someone exaplain this? Thanks! Best wishes, Fancy ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel In principle any index can be used to read and write. Often SRC and MASK will only be read and DST will be read-write (this also goes for the AUX indices), but it is possible for a pixmap to get a random index. Does that answer your question? Maarten. Maarten. ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Where to free screen pixmap driver private?
Dear all, If I use driver pixmap, the screen pixmap also has an allocated driver private. However, when xorg terminates, the driver DestroyPixmap can not be executed. So, the screen pixmap driver private can not be freed. Is this a bug? Can anyone explain it? Thanks a lot! Best wishes, Fancy Fang ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Re: tiling support in EXA
Thanks a lot! This is very useful. Best wishes, Fancy 2010/10/20 Alex Deucher alexdeuc...@gmail.com On Tue, Oct 19, 2010 at 9:58 PM, fancy fang fancyfl...@gmail.com wrote: Hello, all CreatePixmap2 was added to ExaDriverRec for drivers with tiling support. I can not understand what the tiling means. Anyone can explain for me? Thanks a lot! Tiling is a method of laying out data in the framebuffer to maximize cache locality and memoy bandwidth. See this post for a more detailed description: http://www.phoronix.com/forums/showpost.php?p=131301postcount=37 Alex Best wishes, Fancy ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
tiling support in EXA
Hello, all CreatePixmap2 was added to ExaDriverRec for drivers with tiling support. I can not understand what the tiling means. Anyone can explain for me? Thanks a lot! Best wishes, Fancy ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Mixed pixmap creation
Dear all, In exaCreatePixmap_mixed from Xserver 1.9.0, when w == 1 h == 1, it will malloc pixmap data immediately. Please let me name this kind of pixmap as Unit Pixmap. First, I don't know what the benifit is. Second, when the exaDoMigration_mixed is executed, it will allocate driver pixmap for Unit Pixmap. But, I think the driver pixmap for Unit Pixmap is not necessary from the point of performance. Can anyone give explanations ? Thanks a lot! Best wishes, FancyFang ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Re: Mixed pixmap creation
Thanks! But, I still can not understand why Unit Pixmap needs both system buffer and driver buffer? In my opinion, Unit Pixmap only needs system buffer. Welcome your opinions! Fancy Fang 2010/10/14 Jonathan Morton jonathan.mor...@movial.com On Thu, 2010-10-14 at 16:18 +0800, fancy fang wrote: In exaCreatePixmap_mixed from Xserver 1.9.0, when w == 1 h == 1, it will malloc pixmap data immediately. Please let me name this kind of pixmap as Unit Pixmap. First, I don't know what the benifit is. Second, when the exaDoMigration_mixed is executed, it will allocate driver pixmap for Unit Pixmap. But, I think the driver pixmap for Unit Pixmap is not necessary from the point of performance. Can anyone give explanations ? Single-pixel pixmaps are used to represent solid colours, by setting the repeat mode. These are useful for XRender. -- -- From: Jonathan Morton jonathan.mor...@movial.com ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
Re: Mixed pixmap creation
Great! I almost understand what you mean. However, I wonder why Unit Pixmap needs a system buffer and the system buffer is malloced in exaCreatePixmap_mixed instead of other places, such as exaDoPrepareAccess_mixed. Thanks! FancyFang 2010/10/14 Jonathan Morton jonathan.mor...@movial.com On Thu, 2010-10-14 at 16:43 +0800, fancy fang wrote: Thanks! But, I still can not understand why Unit Pixmap needs both system buffer and driver buffer? In my opinion, Unit Pixmap only needs system buffer. Welcome your opinions! Because the driver needs to see the colour of this pixel, if it accelerates an operation involving this solid colour. This is extremely common, eg. for rendering text the solid colour is combined with a mask defining the shape of the letters. -- -- From: Jonathan Morton jonathan.mor...@movial.com ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
