Database Users

Bad displaying of gradients in pictures

I'm not sure whether this is a problem with Android (doubt it), HTC Sense in general or the HTC Photos app..
But what I'm finding is that pictures with gradients (usually ones computer generated) have their gradients shown very bady and makes the picture look terrible. Instead of doing a smooth colour transition, it sort of does it in chunks..
htt p://img441.imageshack. us/img441/7022/img2485n.jpg
As you can see here, isntead of fading smoothly from the red to black, it does those ugly layers. I first noticed it when I had this picture set as the lock screen picture because it does it there too. In bright light its almost impossible to tell, but in the dark it tooks terrible.
Sometimes when I look at the full picture in the Photo app it doesn't do the gradient so badly, but when I go to pinch zoom the slightest it instantly changes to look like that. (isnt just a problem with the one picture btw). I thought it might be something to do with the large picture being resized to fit the screen, but I resized the picture on a computer to be smaller than the screens dimensions and it does the same thing.
Another slight issue I picked up is that black areas in a wallpaper picture don't show as 'true black'. When I view the picture with the black background fullscreen in Photos, the black areas are true black (tested at night - true black of AMOLED screen). But when the picture is set as background, there is a noticeable difference between the blackness of the background and the 'true blackness' of the bottom of the notification bar...
Might be hard to see, but to show what I mean:
htt p://img541.imageshack. us/img541/3236/img2488c.jpg
Does anyone have any explanation for these problems, and even better, fixes?
I've got HTC Legend unrooted
Cheers

Nexus 7 new display + digitizer pixelated disaplay

My Nexus 7 (2012 model) display got broken and I've purchased new Full LCD display+Touch Screen Digitizer (from: http://www.aliexpress.com/item/Orig...itizer-for-ASUS-Google-Nexus-7/767556272.html).
Touch screen is working fine, but the display is not working correct.
Problems:
Images is pixelated all the time. Always
Display is not coming properly. Ex: settings screen is supposed to be smooth gray gradient, but coming as color palette (color bars) instead of smooth gradient. (see image 7)
Previous screen is seen next scree. Ex: in settings screen I can see home menu icons (highlighted with red lines)
Sometimes pinkish color is coming, and sometimes whitish tone is coming
I've attached few images I've taken using my Mobile and few screenshots I've taken directly from Nexus 7. In the screenshots you can see the images are pixelated.
Where could be the problem? How does the screen capturing works in Android? I mean as I've taken direct screenshots and those images got pixelated, does that mean problem is with GPU or does Android will capture the image some home from the display?
Can any one tell me how Android screen capture works?
If Android captures what it is sending to display, then the problem is with GPU.
If Android captures the pixels from the display (some how after shown on the screen), then the problem is with LCD.
Can anyone suggest what could be the problem?
(I've attached images as zip file, as direct image upload is lowering the image quality and one may confuse about the actual problem)

Okay, I think I got an answer (or at least part of it).
Answer: Android captures what it is sending to display (technically, from something called FrameBuffer).
So, I think I've problem with GPU connectivity (may be some loose connection?). Can any one confirm?
Reference:
http://www.imajeenyus.com/computer/20130301_android_tablet/android/taking_screenshots.html
http://stackoverflow.com/questions/19270968/how-to-capture-screenshot-from-framebuffer
http://stackoverflow.com/questions/2807070/screenshot-of-the-nexus-one-from-adb
http://superuser.com/questions/265922/how-does-the-print-screen-key-work
https://nativedriver.googlecode.com/files/Screenshot_on_Android_Internals.pdf

Dispay has shadows, burn in, translucent, opacity or bleedthru.

Greetings all,
I have a S7, and when I have a open white area, lets just go with messages, When I open up the message (text, stock) and compose a new message, I get the white screen however in the background I can see the home screen icon's very faint, with colors. I did a screen shot and when on the phone you can see the icon's, however when I move the screen shot to the PC I dont see any of the icon's, I was hoping to post the pic, but the pic is perfect. I dont know how to explain this, but it weird. I have done two factory wipe's, this is stock, I have not modified this phone. The carrier, (If needed) is T-Mobile. Any and all information will be greatly appreciated.
Ciao~
BH

chargedbird said:
Greetings all,
I have a S7, and when I have a open white area, lets just go with messages, When I open up the message (text, stock) and compose a new message, I get the white screen however in the background I can see the home screen icon's very faint, with colors. I did a screen shot and when on the phone you can see the icon's, however when I move the screen shot to the PC I dont see any of the icon's, I was hoping to post the pic, but the pic is perfect. I dont know how to explain this, but it weird. I have done two factory wipe's, this is stock, I have not modified this phone. The carrier, (If needed) is T-Mobile. Any and all information will be greatly appreciated.
Ciao~
BH
Click to expand...
Click to collapse
If you take a screenshot and it does not display the same as what you are seeing it means it is NOT software related unfortunately this is screen burn

thats what I figured, but its very bad, I have never had any of Samsung Phones every do this. If the display is burned, why would the icon's have color? I see only the background icons, when the screen is white. If it was burned should I see it on all the screens?

chargedbird said:
thats what I figured, but its very bad, I have never had any of Samsung Phones every do this. If the display is burned, why would the icon's have color? I see only the background icons, when the screen is white. If it was burned should I see it on all the screens?
Click to expand...
Click to collapse
The screen burn burns in the colors a possible way to test this is change your background icons from what they were previously and see if the colours have changed on the screen where you can see the burn in..
Alternatively Get a screen test app https://play.google.com/store/apps/details?id=ua.dp.ustav.screentest should let you put solid colors on the screen) and set it for all white (there shouldn't be any other color showing) then for all black (there shouldn't be anything but black or a uniform very dark gray). If either one shows any sort of picture "ghost", the screen has burn-in.
Apparently it helps slightly if you set the screen mode to cinema. (Settings>Display>Screen Mode>Cinema)
Hope this helps

Screen flickering when using parallax wallpaper

This weird screen behavior was observed when I first used a parallax wallpaper application (FYI - it's the 3D Parallax Background by Vinwap).
When I set my moving wallpaper to an image that depicts a starry sky (i.e. lots of white little dots that subtly move when tilting the device), I noticed that the screen would show some visible horizontal flickering at the same area the sky sits.
The effect gets more noticeable as the brightness gets increased. For your reference, I attached a screenshot of my wallpaper to demonstrate what kind of image is required to replicate the issue.
Any ideas on why this issue might occur? Is it a common thing across AMOLED screens, or just another problem with OnePlus 5 panel configuration?

Graphical issues, (horizontal) lines between the shades

After changing to starting wallpaper, I noticed darker lines between the shades of blue. Is that how it's supposed to be? I don't remember it being like that when I first got it.
I tried googling pictures and videos where I could find color fades. Those lines where mostly there, but not as noticeable as on the wallpaper.
I don't think it's a display issue because the problem can easily be seen on the screenshot. i(dot)imgur(dot)com/F5S4mLE.png
Phone is set to High performance, Adaptive display, colour balance on the middle.
I also have another question. Is music player supposed to show these vertical lines when there's no art for the song currently playing, i(dot)imgur(dot)com/JfKc2Ll.png ?
All of the applications are up to date, so is the software. Didn't try factory reset tho.

That's how your phone renders images. If it was a screen issue, it wouldn't be visible in a screenshot.
Try some of those wallpapers especially created for S8 and see if the problem persist. IMO, I wouldn't consider this an issue.