If the image is predrawn, then you can just store it as .png, and then decode it (BitmapFactory) with a preferred config as RGB_565 (see BitmapFactory options).
If the image is drawn by your code, and you can create a Bitmap in RGB_565, and use setPixels(int[]), which will down-sample your ints to 565 shorts for you. Either way, the resulting Bitmap will be 565, which should draw very quickly to the screen (assuming no matrix on the canvas, and no alpha or colorFilter or xfermode on the paint). On Dec 10, 2008, at 5:39 AM, Romkin wrote: To be honest the surface in created in C, as char* and originally i wanted to use 16bit colour, but Bitmap takes int[], which means i have to use 32bit, is there a way i can solve it to use 16bit? On 9 Dec, 17:38, Mike Reed <[EMAIL PROTECTED]> wrote: > I am assuming you have predrawn what you want in the Bitmap. If so, be > sure that the Bitmap's config matches your window (typically 565), > otherwise things will go a lot slower, as we depth-convert your Bitmap > each time it is drawn. > > If you have a large area that is a solid color, it might be faster to > draw that (via canvas.drawColor or canvas.drawRect) and then draw the > bitmap. It all depends, but the fastest a Bitmap can go is memcpy, but > drawing a large area in a solid color can use memset, which is faster > for the same number of dst pixels. > > On Dec 9, 2008, at 11:54 AM, Romkin wrote: > > What is the fastest way to draw on screen? > > currently we use OnDraw and have Bitmap, but is there a faster way to > draw pixel array to screen? > > Thanks. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
