[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #9 from Leo Li --- Michel's right about xgamma leaving 0 and max per-channel values unmodified, so the original issue is not-a-bug. Although I'm not sure why there's a difference between amdgpu and dc, I'll have to look into it. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #8 from Michel Dänzer --- Leo, any ideas what's going on here? -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #7 from Sebastian Luncan --- (In reply to Michel Dänzer from comment #6) > Can you try if current upstream xf86-video-amdgpu Git master works better > with DC? It's the same. I've also tried videos with gamma 3. All hardware decoded videos (h264) look fine, software decoded have this issue. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 Michel Dänzer changed: What|Removed |Added CC||sunpeng...@amd.com --- Comment #6 from Michel Dänzer --- (In reply to Sebastian Luncan from comment #5) > I've also took a picture (attached). On the left is amdgpu-dc on the right > amdgpu, gamma 3 (xgamma -gamma 3), kernel 4.17. See the trees and the grass > on the left. Why do they look different on the same gamma values? Can you try if current upstream xf86-video-amdgpu Git master works better with DC? -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #5 from Sebastian Luncan --- Created attachment 141147 --> https://bugs.freedesktop.org/attachment.cgi?id=141147=edit Gamma amdgpu vs amdgpu-dc I don't know how to capture the screen with gamma so I did a capture with imagemagick and applied gamma with gimp so the issues are visible. I've also took a picture (attached). On the left is amdgpu-dc on the right amdgpu, gamma 3 (xgamma -gamma 3), kernel 4.17. See the trees and the grass on the left. Why do they look different on the same gamma values? As I said, this happened before and I've fixed the issue with gimp by changing images brightness and hue/saturation, but now with amdgpu-dc from 4.17 the issues are back. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 Michel Dänzer changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |NOTABUG --- Comment #4 from Michel Dänzer --- (In reply to Sebastian Luncan from comment #3) > For the first attached imaged I've applied gamma with Gimp. How exactly did you do that? Anyway, I don't think there's a bug here. Gamma doesn't affect all colour values the same way (in particular, 0 and the maximum value are preserved for each colour component). The "colourful" pixels occur because the original pixels have 0 or a very small value in some components but larger values in others, which are affected differently by gamma. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 Michel Dänzer changed: What|Removed |Added Attachment #140974|text/x-log |text/plain mime type|| -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #3 from Sebastian Luncan --- Created attachment 140975 --> https://bugs.freedesktop.org/attachment.cgi?id=140975=edit imagemagick original capture These are the capture commands (ImageMagick) used with FVWM: import -window $[w.id] -silent "PNG24:$[infostore.mScreenshots]/screenshot-$(date +%F[%R]).png" import -window root -silent "PNG24:$[infostore.mScreenshots]/screenshot-$(date +%F[%R]).png" Attached the original capture (without gamma). For the first attached imaged I've applied gamma with Gimp. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #2 from Sebastian Luncan --- Created attachment 140974 --> https://bugs.freedesktop.org/attachment.cgi?id=140974=edit xorg log -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 --- Comment #1 from Michel Dänzer --- Please attach the corresponding Xorg log file. How did you capture the attached image? Can you also attach a corresponding direct capture with a screenshot tool on that machine? -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
[Bug 107482] Images gamma rendering issue
https://bugs.freedesktop.org/show_bug.cgi?id=107482 Bug ID: 107482 Summary: Images gamma rendering issue Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: eseb...@gmail.com Created attachment 140962 --> https://bugs.freedesktop.org/attachment.cgi?id=140962=edit images gamma I have a PC with: MB: Asrock AM1B-ITX CPU: AMD Kabini Athlon 5350 APU iGPU: Radeon HD 8400 / R3 Series Displays: DVI Asus, HDMI Samsung kernel-4.15/4.16/4.17 xorg-server-1.19.5 xorg-drivers-1.19 xf86-video-amdgpu-18.0.1 xf86-video-ati-18.0.1 libdrm-2.4.92 When I increase the gamma to check the quality of images (xgamma -gamma 3), some pixels are darker/colorful, it seems like gamma is not applied uniformly for all pixels. This happens on all kernels with any video driver: radeon, amdgpu, amdgpu-dc. I thought there's something wrong with the images so I've edited them on Gimp by increasing brightness or change hue/saturation. This was fine until the kernel 4.17 and the amdgpu-dc driver upgrade, images have again the issue. They are fine with amdgpu. Is there something I can do about this? Thanks. -- You are receiving this mail because: You are the assignee for the bug.___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
