On 9/18/2010 2:23 PM, Dianne Hackborn wrote:
On Fri, Sep 17, 2010 at 7:54 PM, Leigh McRae
<leigh.mc...@lonedwarfgames.com
<mailto:leigh.mc...@lonedwarfgames.com>> wrote:
Making a few fast paths for drawing bitmaps (BitBlt) would be
huge for game developers. I know that 3 of my games I have made
aren't OGL simply because I don't want the extra code
maintenance/burden. If a game is doing some of the things you
mention, well then it's not likely concerned with frame-rate.
Use OpenGL ES.
As I stated, using OpenGL ES requires extra code. You to manage
re-loading the assets such as textures and VBO. With the Android
Activity life cycle this is even more of an issue than other platforms.
This isn't trivial. It also exposes you to driver bugs/oddities.
Seriously, you generally can't just accelerate one function and
nothing else. What you will end up with is the worst of both worlds,
as you take the hit of switching between hardware and software
rendering all the time.
You can actually. I don't think it's being suggested that you use the
OpenGL driver to implement a basic bitblt. Its being suggested that the
Android OS supports the ability for hardware to accelerate the bitblt.
Maybe it already does, I don't know.
If you just want to draw bitmaps to the screen, this can certainly be
accomplished with Open GL ES, and you don't need to rely on the
platform to provide you with essentially helper APIs to make it easier
to do that particular special case. You can ask anyone here to write
such a thing for you. Waiting for the platform to provide it is a
really bad option because you don't know when it will be available (we
don't really, either), and even once it does become available you
can't really take advantage of it until it is available on the
majority of the devices.
There are so many things people can do without relying on the platform
to give it to them in a nice little bundle.
I don't think anyone is waiting. I believe it was just a
request/suggestion.
--
Dianne Hackborn
Android framework engineer
hack...@android.com <mailto:hack...@android.com>
Note: please don't send private questions to me, as I don't have time
to provide private support, and so won't reply to such e-mails. All
such questions should be posted on public forums, where I and others
can see and answer them.
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--
Leigh McRae
www.lonedwarfgames.com
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