Backend can't run in DirectX 9 mode

[aglitchman]

Use env var set DM_ANGLE_PLATFORM_TYPE=d3d9 to test.

Error is:

ERROR:GRAPHICS: dmGraphics::OpenGLNewTexture(3538): gl error 1280: GL_INVALID_ENUM

Assertion failed: 0, file ..\src\opengl\graphics_opengl.cpp, line 3538
INFO:CRASH: Successfully wrote Crashdump to file: C:/Users/Artsiom/AppData/Roaming/Defold/_crash
ERROR:CRASH: CALL STACK:


ERROR:CRASH:  0 0x7FF7AF4F3860 dmCrash::GenerateCallstack D:\a\defold\defold\engine\crash\src\backtrace_win32.cpp:143
ERROR:CRASH:  1 0x7FF7AF4F3F00 dmCrash::SignalHandler D:\a\defold\defold\engine\crash\src\backtrace_win32.cpp:294
ERROR:CRASH:  2 0x7FF7AF85556C raise /tmp/job6371905326155066769/minkernel/crts/ucrt/src/appcrt/misc/signal.cpp:547
ERROR:CRASH:  3 0x7FF7AF8458C4 abort /tmp/job6371905326155066769/minkernel/crts/ucrt/src/appcrt/startup/abort.cpp:71
ERROR:CRASH:  4 0x7FF7AF8444D0 common_assert_to_stderr_direct /tmp/job6371905326155066769/minkernel/crts/ucrt/src/appcrt/startup/assert.cpp:160
ERROR:CRASH:  5 0x7FF7AF844870 common_assert_to_stderr<wchar_t> /tmp/job6371905326155066769/minkernel/crts/ucrt/src/appcrt/startup/assert.cpp:179
ERROR:CRASH:  6 0x7FF7AF844388 _wassert /tmp/job6371905326155066769/minkernel/crts/ucrt/src/appcrt/startup/assert.cpp:443
ERROR:CRASH:  7 0x7FF7AF4429D0 dmGraphics::OpenGLNewTexture D:\a\defold-graphics-angle\defold-graphics-angle\engine\graphics\src\opengl\graphics_opengl.cpp:3539
ERROR:CRASH:  8 0x7FF7AF439FE0 dmGraphics::ValidateAsyncJobProcessing D:\a\defold-graphics-angle\defold-graphics-angle\engine\graphics\src\opengl\graphics_opengl.cpp:779
ERROR:CRASH:  9 0x7FF7AF437B60 dmGraphics::OpenGLInitialize D:\a\defold-graphics-angle\defold-graphics-angle\engine\graphics\src\opengl\graphics_opengl.cpp:1325
ERROR:CRASH: 10 0x7FF7AF439800 dmGraphics::OpenGLNewContext D:\a\defold-graphics-angle\defold-graphics-angle\engine\graphics\src\opengl\graphics_opengl.cpp:610
ERROR:CRASH: 11 0x7FF7AF560CC0 dmEngine::Init D:\a\defold\defold\engine\engine\src\engine.cpp:1114
ERROR:CRASH: 12 0x7FF7AF55F9E0 dmEngineCreate D:\a\defold\defold\engine\engine\src\engine.cpp:2580
ERROR:CRASH: 13 0x7FF7AF566A50 dmEngine::RunLoop D:\a\defold\defold\engine\engine\src\engine_loop.cpp:71
ERROR:CRASH: 14 0x7FF7AF447940 engine_main D:\a\defold\defold\engine\engine\src\engine_main.cpp:153
ERROR:CRASH: 15 0x7FF7AF7FE6E4 __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
ERROR:CRASH: 16 0x7FFC65A3E8C0 BaseThreadInitThunk <unknown>:0
ERROR:CRASH: 17 0x7FFC6718C510 RtlUserThreadStart <unknown>:0
ERROR:CRASH: