Trying out some settings I came across this bug, by enabling OpenGl the drawing surface gets darker (see attached pictures). I tried it with the 3 Scalling modes options and it stays darker. http://fc05.deviantart.net/fs70/i/2013/242/7/5/kritadefaultsettings_by_gamamoto-d6kcvap.png http://fc07.deviantart.net/fs71/f/2013/242/f/7/kritaopengltrilinear_by_gamamoto-d6kcvc9.png Reproducible: Always Steps to Reproduce: 1. Settings 2. Configure Krita 3. Enable OpenGl 4. (not mandatory) Set Scalling mode to Trilinear filtering Actual Results: Canvas gets darker Expected Results: Keep the canvas with the same lighter tone Windows 8 Graphics card : Sapphire Radeon HD 7950 Processor : Intel core i7-3820
I bet this is another Radeon specific bug... We've got a bunch of them :-( -- and I don't have a radeon to debug on! With an intel gpu, no darkening happens.
There is no darkening on Nvidia also
Does the high-quality filter mode in the latest Windows builds work for you?
Can you test again with the latest downloads from http://www.kogmbh.com/download.html ?
I'm sorry, but I'm going to have to close this bug. It probably is an AMD/Radeon driver bug -- we've heard of this happening before. It doesn't happen for everyone, so I suspect there are some driver settings that cause the image to darken. But it's not something we can do anything about!
Hello, I would like you to consider re-opening this bug, as I can confirm that it still exists and does happen on Nvidia GPUs. I have a laptop running Windows 10 with a GTX 560M for the GPU. I first experienced this issue on Windows 7 about a year and a half ago when I fist picked up Krita. I was turned off by the bug, but kept following Krita hoping the bug would get taken care of at some point. It never did, so I am here hoping to revitalize discussion on it. I recently updated my copy of Krita after having not used it since last spring. I was greeted by the usual interface and the colors were fine on the new image I created. I then turned on OpenGL, and immediately all of the colors on the canvas darkened, almost as if I had taken a levels filter and darkened the image with it. This issue was infinitely repeatable as every time I turned off OpenGL the colors returned to normal and every time I turned it back on they darkened again. This problem persisted over multiple documents, and in the past I had cases where it would darken images that I opened from other sources. The darkening of the canvas was also reflected in exported images, which was problematic in some cases where I needed to edit an image for somebody else. This time however, I opened an image from another source and the colors remained correct in spite of OpenGL being turned on. I tried copying and pasting the opened image into the problem document and the pasted image darkened like the rest of the canvas. Shortly after that test, I attempted to make another new image while OpenGL was turned on, and unexpectedly the colors were fine. I then toggled OpenGL off then on again, and the colors remained correct throughout. I then turned OpenGL off and created another new image. The image had correct colors as expected. I then turned on OpenGL and the image retained the correct colors. After this, Krita maintained the correct colors on all opened documents even after being closed and launched again multiple times. At this point, I leave it up to the developers' discretion as to whether or not this issue should be reopened. My first guess would be that this bug is a result of some form of bad gamma correction, but after what I saw today I can't be sure. I can say that the bug did not depend at all on color space: I tried several and there were no changes in the canvas colors. Anyway, if nothing else, if somebody else experiences this bug in the future and stumbles here looking for help, they'll be able to read this comment to get some insight. My best recommendation for anyone else experiencing this issue is to simply keep trying different things until it works, and post your experiences here if you can't get it to work. I'll post an update if anything changes.
UPDATE: I stopped working with Krita for a bit, and then went back and opened an older document that was exhibiting the same darkening bug. The document maintained the bug and all of the colors were off. I tried creating new documents again and toggled OpenGL on and off and the colors remained too dark while OpenGL was on in all documents. I then tried opening a PNG file from a different source and it opened with the correct colors, but all of the other documents remained too dark. I then proceeded to close Krita. I launched it again but opened a document that had the correct colors earlier and it still had the correct colors. I then opened the other document that previously had incorrect colors, and now it's colors were corrected. The problem document can now be re-opened over and over and will keep the correct colors. Further testing proved that using a problem document and then opening ex-problem documents results in the ex-problem documents becoming problem documents again. So far, returning a document to its problem state appears to be permanent. So, my basic steps to cause this problem: 1. Start Krita 2. Create a new document or open a previously darkened document (problem document) 3. Switch into OpenGL mode if you did not start in it 4. All colors should now be too dark Opening problem documents from this point on will always result in darkened images. All new images will have the same problem. My present workaround to this problem (works sometimes): 1. Start Krita 2. Load an image from an alternative source that has the correct colors (any image from the internet seems to work). 3. Create a new image or load a problem image a. A new image will have the correct colors b. A problem image will be corrected to the right colors After further testing, this method seems to have broken down and is no longer repeatable. As such, I don't really know what caused the images to correct themselves. However, the first image I managed to correct still persists, even if I open a problem document first. In that particular image, I embedded a PNG image that originally had correct colors. That same image also has a vector layer with a number of shapes present. I will attach the document under the name "Drawing (Correct colors).kra" I will also attach an example problem document that I cannot seem to fix. It will be called "Drawing (Incorrect colors).kra". Based on the nature of my findings, I think this issue could very well be application side, and as such should be re-opened. I'll keep testing when I have time, but for now this is all I have.
I couldn't get the files to attach because they are too big and I couldn't use the paste text as attachment for some reason. Here are links to copies of the previously mentioned files on MEGA: Drawing (Correct colors).kra - https://mega.nz/#!ZdsGBQZB!XX8HbXg1RGk6DMeNZirbv_ZOD1EFpatp-cIcV3GUh-8 Drawing (Incorrect colors).kra - https://mega.nz/#!ZJcjHaSB!kTknRJA7odgQvsBv3ETvwb5sOS4_46edKl9O3yGlVac Please let me know if you have any questions.
Er... The drawings are not comparable: one is 8 bits sRGB, the other is 16 bits linear gamma RGB. Can you also attach a screenshot of the display settings tab and color management settings tab from the settings dialog?
Created attachment 94728 [details] A snapshot of my display settings A capture of my display settings as requested by Boudewijn
Created attachment 94729 [details] A snapshot of my color management settings as requested by Boudewijn
Thank you for responding so quickly, I appreciate it. I'm sorry for the wall of text I unleashed, I didn't want to miss any potentially useful details, but I fear I got a little long winded. Anyway, I was not aware that the documents were in different color spaces. I tried converting the one in 16 bits linear gamma RGB into 8 bits sRGB and there was no visible change in the canvas colors. Let me know if there is anything else I can do, I would very much like to have this problem resolved if at all possible.