Widelands closes immediately on startup in Windows 10

[GunChleoc]

Start Widelands, blink and you miss it. Log output is blank.

The computer is a bit older, but 64 bit (Intel Core2 Duo, 4BG RAM).

Graphics driver: Mobile Intel 4 Series Express Chipset Family (Microsoft Corporation WDDM 1.1

The same computer has no problem with Linux, so it's probably a graphics drivers issue / Win 10 specific.

Tested with Build 19.

And AppVeyor Debug Build results in a "Terminated in an unusual way" message and some log output.

This is Widelands Version master-1943_Debug_x64 (Debug)
Set home directory: C:\Users\user\.widelands
There's no configuration file, using default values.
Widelands executable directory: C:\bin\Widelands
Adding directory: C:\bin\Widelands\data
selected language: (system language)
Graphics: Try to set Videomode 800x600
Graphics: OpenGL: Version "1.1.0"
Graphics: SDL_GL_RED_SIZE is 8
Graphics: SDL_GL_GREEN_SIZE is 8
Graphics: SDL_GL_BLUE_SIZE is 8
Graphics: SDL_GL_ALPHA_SIZE is 0
Graphics: SDL_GL_BUFFER_SIZE is 24
Graphics: SDL_GL_DOUBLEBUFFER is 1
Graphics: SDL_GL_DEPTH_SIZE is 16
Graphics: SDL_GL_STENCIL_SIZE is 8
Graphics: SDL_GL_ACCUM_RED_SIZE is 16
Graphics: SDL_GL_ACCUM_GREEN_SIZE is 16
Graphics: SDL_GL_ACCUM_BLUE_SIZE is 16
Graphics: SDL_GL_ACCUM_ALPHA_SIZE is 0
Graphics: SDL_GL_STEREO is 0
Graphics: SDL_GL_MULTISAMPLEBUFFERS is 0
Graphics: SDL_GL_MULTISAMPLESAMPLES is 0
Graphics: SDL_GL_ACCELERATED_VISUAL is 1
Graphics: SDL_GL_CONTEXT_MAJOR_VERSION is 2
Graphics: SDL_GL_CONTEXT_MINOR_VERSION is 1
Graphics: SDL_GL_CONTEXT_FLAGS is 0
Graphics: SDL_GL_CONTEXT_PROFILE_MASK is 2
Graphics: SDL_GL_SHARE_WITH_CURRENT_CONTEXT is 0
Graphics: SDL_GL_FRAMEBUFFER_SRGB_CAPABLE is 0
Graphics: OpenGL: Double buffering enabled
Graphics: OpenGL: Max texture size: 1024
Graphics: OpenGL: ShadingLanguage: "(null)"
**** GRAPHICS REPORT ****
 VIDEO DRIVER windows
 pixel fmt 370546692
 size 800 600
**** END GRAPHICS REPORT ****

[SirVer (sirver)]

> Graphics: OpenGL: Version "1.1.0"

SDL did not get a OpenGL Version >= 2.1 (which we require). This seems to be a known issue on some Windows 10 machines, see for example https://communities.intel.com/thread/78542.

The only valid way of checking if a certain version of a driver is available is trying to create an OpenGL context and see if that succeeds: https://gamedev.stackexchange.com/questions/28451/how-do-i-properly-check-if-a-particular-opengl-version-is-available.

We create our context using https://wiki.libsdl.org/SDL_GL_CreateContext in src/graphic/gl/initialize.cc - but we fail to check if that actually succeeded.

[GunChleoc (gunchleoc)]

Same problem reported for Windows Vista in https://bugs.launchpad.net/widelands/+bug/1691644, where the OpenGL version reported is "(null)".

[GunChleoc (gunchleoc)]

Migrated to https://github.com/widelands/widelands/issues/3196