#7114 OPENGL: Errors when moving program to background on Win32

[Liron Barzilai]

On Windows (tested on Windows 10), when moving to the background (Alt+Tab) there is a repeating log print (below).
Of course, it’s only with OpenGL and OpenGL (no filtering) modes

1.8 -
WARNING: GL ERROR: (Unknown GL error code 0x506) on glClear(GL_COLOR_BUFFER_BIT) (backends/graphics/opengl/opengl-graphics.cpp:380)!
WARNING: GL ERROR: (Unknown GL error code 0x506) on glDrawArrays(GL_TRIANGLE_STRIP, 0, 4) (backends/graphics/opengl/texture.cpp:202)!

1.9 git Commit: 260cd96 -
WARNING: GL ERROR: (Unknown GL error code 0x506) on glClear(0x00004000) (backends/graphics/opengl/opengl-graphics.cpp:395)!
WARNING: GL ERROR: (Unknown GL error code 0x506) on glDrawArrays(0x0005, 0, 4) (backends/graphics/opengl/pipelines/shader.cpp:86)!

[Johannes Schickel]

Please add more details about your hardware/software configuration:
What graphics cards do you have installed? (i.e. CPU integrated and/or dedicated).
What graphics card drivers do you have installed?
Does your system do any sort of transparent graphics card switching?

[Liron Barzilai]

Hi, I am using latest Windows 10 as VM. With Parallels Desktop 11 for Mac. Emulated GPU with 1GB of memory. Emulated high-end CPU with 4GB of memory.

Just discovered that these prints aren't showing on the same Windows 10 when running through Boot Camp ("real" not VM).
So I am sorry for opening this card. If it's not easliy fixed - just closed this.