Hi Andy,

Thanks for the reply. Please see my response inline below.

On Thu, Jan 7, 2016 at 8:02 AM, Andy Green andy.green@linaro.org wrote:

On 6 January 2016 at 15:04, Shawn Guo shawn.guo@linaro.org wrote:

...

Hi,

I'm running into a problem on Android 5.1 when using keyboard to move input focus among different application icons. It seems that the problem may be related to how application icon is highlighted when it gets input focus. On customer's system, the application icon will be highlighted with a blur effect around it. As a comparison on hikey, I found that the icons gets highlighted with a square block around them. The attached pictures demonstrate the differences there.

I guess that such input focus highlighting effect should be done by GPU. But the customer's system runs a same version Mali DDK as Hikey.

I dunno much else about the Android side of this, but I do know the Mali DDK is just one part of the variables there. You can't say everything is the same just by looking at DDK patchlevel.

You also need to check the Mali IP version number (like rXpY) and the

That's something I did not make it clear in my original posting. Hikey SoC runs Mali-450-r0p0, while my customer's SoC runs Mali-400-r1p1. So yes, the IP is indeed different.

DDK version the Mali kernel driver came from. There are some DDK build-time choices that are tied to which Mali IP rXpY you target the build to.

The DDK version is aligned on r5p2. But yes, since the IP is different, the VARIANT string is different. However that's only on IP version, and all the rest options are same.

Unless they use the same kernel sources, git diff between the two mali directories in the kernel for the two platforms might give a hint.

I don't know if that's related to your issue but you do have to tie those down as well as the DDK (userland libs) to understand the differences in hardware and software environment between the two platforms.

Thanks for the comments. I may have picked a wrong reference platform here. I should probably find a platform running Mali-400-r1p1 for reference.

Shawn

Hi Bin,

Thanks for the comments.

I just downgraded the Mali DDK from r5p2 to r5p1, and saw that the icon highlighting goes to the same way as we see on Hikey, i.e. a white and transparent block around icon. And consequently, the issue we were originally tracking is gone. So apparently, this is a Mali DDK issue. But I'm confused that why running r5p2 on Hikey doesn't use the blurry icon highlighting. The difference between Mali-450 and Mali-400 come to play? Anyway, we are trying to talk to ARM Mali DDK team to understand the situation.

Thanks, Shawn

On Thu, Jan 7, 2016 at 11:51 AM, Bin Chen bin.chen@linaro.org wrote:

It looks to me the transparent (or alpla) hasn't been processed correctly. But can't say at which level cause the problem.

Not sure if it is possible on hikey, but dumping the layers would help to see if is a rendering problem or composition problem.

On 6 January 2016 at 18:04, Shawn Guo shawn.guo@linaro.org wrote:

...

Hi,

I'm running into a problem on Android 5.1 when using keyboard to move input focus among different application icons. It seems that the problem may be related to how application icon is highlighted when it gets input focus. On customer's system, the application icon will be highlighted with a blur effect around it. As a comparison on hikey, I found that the icons gets highlighted with a square block around them. The attached pictures demonstrate the differences there.

I guess that such input focus highlighting effect should be done by GPU. But the customer's system runs a same version Mali DDK as Hikey. So I'm wondering if this different behavior is caused by Android level of configuration. That's why I'm asking help from Android mail list. Any comment or hint about how this different behavior comes will be much appreciated. Thanks.

Regards, Shawn

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-- Regards, Bin