Since I upgraded to Windows 10 and Libre Office 6.3.2.2 (x64) I am having trouble with the PNG/JPG-export in Draw. All the colours are off and letters have a strange border. Is this a bug? How can I fix this? See examples: https://ask.libreoffice.org/en/question/214467/draw-png-export-with-transparency-broken/
Plesa add ODG sample with image in attach here
Created attachment 155423 [details] test kit OpenDocument drawing multiple graphics and export with and without OpenGL Export to PNG with OpenGL rendering is garbling Alpha and RGB. Default GDI rendering is correct. Attached test kit has ODG and resulting exports. Testing on Windows 10 Home 64-bit en-US (1903) w/Intel HD 620 (driver 26.20.100.7323) and Version: 6.3.2.2 (x64) Build ID: 98b30e735bda24bc04ab42594c85f7fd8be07b9c CPU threads: 4; OS: Windows 10.0; UI render: default; VCL: win; Locale: en-US (en_US); UI-Language: en-US Calc: threaded
First pass it seems to be OpenGL rendering of PNG RGB and Alpha channel. JPEG does not support Alpha channel transparency. For OP could you retest with OpenGL rendering disabled? Tools -> Options -> View 'Graphics output', checkbox for 'Use OpenGL for all rendering' and restart.
Created attachment 155623 [details] ODG example
Created attachment 155624 [details] PNG export of ODG example
Created attachment 155625 [details] Test-Kit PNG-Rendering
Created attachment 155626 [details] PNG export of ODG example with OpenGL turned off. Turning OpenGL off fixed it for me! Thank you!
I can't repro it in Версия: 6.4.0.0.alpha1+ (x64) ID сборки: 13ac239daa4e40413b02892f5d70a12066f1f731 Потоков ЦП: 4; ОС:Windows 10.0 Build 17763; Отрисовка ИП: GL; VCL: win; Локаль: ru-RU (ru_RU); Язык интерфейса: ru-RU Calc: threaded and in 6.3.3.2 too I have DriverVersion: 24.20.100.6286 DriverDate: 8-15-2018 DeviceID: PCI\VEN_8086&DEV_591B&SUBSYS_1A101043&REV_04 AdapterVendorID: 0x8086 AdapterDeviceID: 0x591b AdapterSubsysID: 0x1a101043 DeviceKey: System\CurrentControlSet\Control\Video\{50593AB0-5855-11E9-A9D9-E7305D07F358}\0000 DeviceString: Intel(R) HD Graphics 630 may be windows 10 build 1903 problem? Mike, do you have latest Windws 10 build? Can you try repro it?
Can't repro with Версия: 6.3.3.2 (x64) ID сборки: a64200df03143b798afd1ec74a12ab50359878ed Потоков ЦП: 4; ОС:Windows 10.0; Отрисовка ИП: GL; VCL: win; Локаль: ru-RU (ru_RU); Язык интерфейса: ru-RU Calc: threaded on Win10 ver.1903 (build 18362.418) with Intel HD Graphics 620 (driver version 22.20.16.4836) with OpenGL enabled (and reported active by LO).
Cannot reproduce with LO 6.3.3 and 6.5+. Windows 8.1. Intel HD ver. 10.18.14.4264. Default PNG options. Interesting to see that Mike doesn't reproduce with driver version 22.20.16.4836 while Stuart does with driver 26.20.100.7323. And it seems from intel page that there are newer versions: https://downloadcenter.intel.com/product/80939/Graphics-Drivers. So Steffen and Stuart, would you consider to update your drivers?
I will ask my admin...
[Automated Action] NeedInfo-To-Unconfirmed
As Skia with Vulkan will replace OpenGL UI rendering on all platforms, it does not make sense to keep OpenGL UI reports open. Details about Skia: https://www.collaboraoffice.com/success-story/implementing-vulkan-capable-libreoffice-user-interface-using-the-skia-library/
Created attachment 165848 [details] test document exported to PNG with Skia rendering, cleanly handled transparencies confirmed Skia rendering produces clean transparency with PNG export