Commit 9e158470 set the SDL OpenGL attribut SDL_GL_ALPHA_SIZE to 0 since
the alpha channel is used by Wayland. But for X11 the GLX 1.4 specification
clearly states: "If the requested number of bits in attrib_list for a
particular color component is 0 or GLX_DONT_CARE, then the number of
bits for that component is not considered." So if SDL_GL_ALPHA_SIZE is
0 a framebuffer without an alpha channel is created. This is no problem
on the default GLX module due to a non standard implementation but
manifests with Nvidias GLX module. The consequence are render mistakes
like in game display showing static or the flashlight looking weird.
* the OpenAL function definitions mustn't include __declspec(dllimport)
=> fixed by pretending to compile OpenAL statically
* glimp.cpp shouldn't be used in dedicated-only mode (as it was already
the case on Linux and OSX)
=> No special handling for ID_DEDICATED needed in glimp.cpp, as it's not
used anyway
* add APIENTRY to every gl function in stub_gl.cpp for compatibility
with windows headers and MSVC
* remove GL/gl.h #include from win_local.h as it's not needed
* in qgl.h, when building dedicated server for windows, redefine WINGDIAPI
to nothing for SDL_opengl.h #include to get rid off __declspec(dllimport)
by using #pragma push_macro and pop_macro, because our stub is no dll.
Fixes https://github.com/dhewm/dhewm3/issues/39
Some functions were duplicated, the only difference was a const in one
parameter. The definitions in the header were with const, so I kept
those versions.
Also, the functions in the header are pure C, so add extern "C",
this fixes issues with MSVC and the formerly duplicated functions.
There used to be a bug (discussed in #40), that ALT was still set after
using ALT-Tab. Thus when next pressing enter fullscreen was toggled.
This should now be fixed by unsetting the modifiers when focus is
regained (SDL_ACTIVEEVENT or SDL_WINDOWEVENT_FOCUS_GAINED).
Since we don't have our own signal handler anymore, those two
init functions can be merged into the existing Sys_Init(), which
is already called by common->Init().
warning: variable ‘err’ set but not used [-Wunused-but-set-variable]
warning: unused variable ‘len’ [-Wunused-variable]
warning: format ‘%d’ expects argument of type ‘int’, but argument 3
has type ‘long long unsigned int’ [-Wformat]
This was only implemented with MSVC style asm.
Comments suggest that it was used to help catch invalid FOV calculations,
which were probably only happening with ancient compiler bugs.
