Hi, I talked about this a little bit in my 2nd answer to this thread. You will have to create a new BGR pixel-format and use this one. Adding a pixel format to the system is not too hard, but it requires adding a constant into multiple files (and make sure they all match).
For your information, a 32-bits BGR format has been added to the system after 1.0 was released (it is needed for the GPU to render into 32-bits surfaces). Have a look at pixelflinger's format.cpp, this is where the pixelformats are defined, it will ripple from there (the corresponding header file has a list of the other files that must be updated). Eventually, I should define all the useful pixelformat enums somewhere so that we don't have collisions when people add new formats. In theory pixelfinger can handle pretty much any pixel configuration; so we could add a mechanism to create formats at runtime, which would also avoid the namespace problem. Mathias On Sun, Dec 7, 2008 at 8:39 PM, FlyCry <[EMAIL PROTECTED]> wrote: > > Hi, Mathias. Sorry to reply until now, cause somthing else I have to > deal with in my job. > I modified the assembly code of load_store.cpp. You mean that it would > break GL_RGB? So if LCDC needs a BGR framebuffer, but android gives an > RGB. What can I do to work it out? Could android give BGR display? > > > > On 12月5日, 上午8时44分, David Given <[EMAIL PROTECTED]> wrote: >> Mathias Agopian wrote: >> >> [...] >> >> > I don't understand what "looking at a GL_RGB pixel in a word" means. A >> > word has 32 bits, GL_RGB has 24. >> >> Well, I thought it was pretty obvious --- you load your 24 bits, in >> natural order, into the bottom end of a quad, exactly the same way that >> you'd load a 32 bit value or a 16 bit value or an 8 bit value! >> >> The only thing that makes it the slightest bit complicated is that >> GL_RGB is unaligned so you wouldn't be able to use a simple LDR >> instruction, but that's just an implementation issue. >> >> -- >> ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ─────http://www.cowlark.com───── >> │ >> │ ⍎'⎕',∊N⍴⊂S←'←⎕←(3=T)⋎M⋏2=T←⊃+/(V⌽"⊂M),(V⊝"M),(V,⌽V)⌽"(V,V←1⎺1)⊝"⊂M)' >> │ --- Conway's Game Of Life, in one line of APL >> >> signature.asc >> < 1K查看下载 > > > --~--~---------~--~----~------------~-------~--~----~ unsubscribe: [EMAIL PROTECTED] website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
