Unreal Engine version: 4.5.0 compiled from GitHub with a small change to disable compatibility OpenGL profile as adviced in RCL’s answer to [Editor doesn’t launch - Could not create OpenGL 3.2 context][2] because without those changes the editor didn’t even launch.
I attached the log but I didn’t see anything suspicious there. Tell me whether you need any additional info.
After some debugging, I have found what’s the cause of the problem.
During rendering of the text the engine calls OpenGL 4 function to set the blending mode, while my driver supports only OpenGL 3.3, thus the call is ignored.
The easiest workaround I have found is to:
Open /Engine/Source/Runtime/OpenGLDrv/Public/OpenGL4.h
Find the line with glBlendFuncSeparatei(Buf, SrcRGB, DstRGB, SrcAlpha, DstAlpha); (currently it’s line 27)
Replace it with glBlendFuncSeparate(SrcRGB, DstRGB, SrcAlpha, DstAlpha);
Recompile the editor
After doing these steps, the text looks normal, but there is possibility that this fix has some side effects, but at least the editor is now usable.
As for the problem with black scene…
It does not occur in every scene (in the screenshot from the question is an unmodified vehicle template). It is a problem with some effect (probably using some unsupported instructions - it would be nice if the effect was automatically disabled when unsupported instead of making the entire scene black).
After changing the effects setting to medium at Settings->Engine scalability settings the scene is not black anymore. The problem with black scene occurs at both high and epic settings.
After updating the driver to a new version, above workaround is not required anymore, seems like relevant OpenGL extension for this function has been added to the driver.
The problem with black scene has also been fixed with new version of graphics driver.
I have a similar problem with Ubuntu, but, my problem is that Editor’s Viewport showme a black screen, when i do play for reproduce the game, showme all good.
I have a similar problem with Ubuntu, but, my problem is that Editor’s Viewport showme a black screen, when i do play for reproduce the game, showme all good.
Can anyone help me with this?
I’m using the latest oficial repository drive man, and the latest mesa drivers.
Are you still having issues with the editor viewport appearing black? Is the viewport black when creating a new First Person Template project? Let me know if you think of any additional information that may help me reproduce this on my end.
Yes, i’m having this issues again, in the 4.9 version.
This happen when i put -opengl4 in the launching command. Isn’t matter the project’s type, ever put a black screen viewportt’s editor.
I solved this partialy with the fix that say me, but i think that for the next release will be better fix this problems and optimize the Linux performance( memory and graphic, i don’t know why but FPS see poor than TP).
Yes, i’m having this issues again, in the 4.9 version.
This happen when i put -opengl4 in the launching command. Isn’t matter the project’s type, ever put a black screen viewportt’s editor.
I solved this partialy with the fix that say me, but i think that for the next release will be better fix this problems and optimize the Linux performance( memory and graphic, i don’t know why but FPS see poor than TP).
Can you see in the next image a few problems with FPS? The cross-air is wrong, isn’t in front of the weapon and the bullets, is a bouncy ball, doesn’t shot in the cross-air direction exactly, but, i think that the reason is because a bouncy ball.
The other problem is that the boxes haven’t colider boxes, the balls pass through the boxes, but when i shoot to the group of boxes, this groups break out and the boxes shoot out, it’s freak.
