https://bugs.winehq.org/show_bug.cgi?id=41653
--- Comment #5 from donanykey@gmail.com --- Intermediate update. All these games (and number of others) are based on Adobe AIR with specific game engine "Starling" utilizing Adobe Stage3d for gpu rendering.
To simplify debug, I built a very small example with Starling and packaged it into exe bundled with AIR runtime in a way games do (I hope), 13,1 MB:
https://drive.google.com/drive/folders/0B3QOvR6YLO_ybjVHaWNRYjNlZjQ?usp=shar... Source: https://drive.google.com/file/d/0B3QOvR6YLO_yS2ZJcEJ5N09FcFE/view?usp=sharin...
It just adds 2 things to a stage with white background (in this order and order does matter in this 2D engine as it not fully supports depth afaiu):
1. Text in blue containing current rendering info (software/directx/etc) 2. And a green square in the center
So far, even with these two items, flickering is observable on wine-staging (1.9.23). Particularly the text is blinking, while the square doesn't show at all. FTR on plain Wine the both items are shown, but the renderer is "Software, hw_disabled=old_driver (baseline constraints)", and thus it could flicker as well, whenever passed the directx availability checks.
Anyway, as far as I understand a trace, looks like the square (two triangles) is reaching wined3d, but have no idea yet why is not visible finally:
701152.597:0009:trace:d3d9:d3d9_device_DrawPrimitive iface 0x125e08, primitive_type 0x5, start_vertex 0, primitive_count 2. 701152.597:0009:trace:d3d:wined3d_device_set_primitive_type device 0x21516f8, primitive_type WINED3D_PT_TRIANGLESTRIP 701152.597:0009:trace:d3d:wined3d_device_draw_primitive device 0x21516f8, start_vertex 0, vertex_count 4.
Probably, thats Z buffer and objects fall behind the scene 701152.619:0009:trace:d3d:state_zenable No Z buffer - disabling depth test
or different rendering order behavior in d3d9 implementation, I am not sure as not much familiar with directX and, especially, wined3d.
P.s. Wine-staging was compiled without CSMT patches and some others conflicting with the tree after `git reset --hard wine-1.9.23 && git clean -f`
./patchinstall.sh DESTDIR=/var/wine/staging/git --all -W wined3d-CSMT_Helper -W wined3d-CSMT_Main -W api-ms-win-Stub_DLLs -W dxva2-Video_Decoder -W mfplat-MFTRegister -W msidb-Implementation -W ntoskrnl- DriverTest -W nvcuda-CUDA_Support -W nvapi-Stub_DLL -W nvcuvid-CUDA_Video_Support -W nvencodeapi-Video_Encoder -W uxtheme-GTK_Theming -W vulkan-Vulkan_Implementation -W wuauserv-Dummy_Service