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author | wm4 <wm4@nowhere> | 2016-05-11 12:33:49 +0200 |
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committer | wm4 <wm4@nowhere> | 2016-05-11 15:39:29 +0200 |
commit | fde20d10bcacebf61aff42ab1f48ac72023a2aa5 (patch) | |
tree | 32208ac416db568fa7286f83a69b7c225df05f04 /video/out/opengl/angle_dynamic.c | |
parent | bea76753078c2602c2fc67dc06ce13141560cf0d (diff) | |
download | mpv-fde20d10bcacebf61aff42ab1f48ac72023a2aa5.tar.bz2 mpv-fde20d10bcacebf61aff42ab1f48ac72023a2aa5.tar.xz |
vo_opengl: angle: dynamically load ANGLE
ANGLE is _really_ annoying to build. (Requires special toolchain and a
recent MSVC version.) This results in various issues with people
having trouble to build mpv against ANGLE (apparently linking it
against a prebuilt binary doesn't count, or using binaries from
potentially untrusted sources is not wanted).
Dynamically loading ANGLE is going to be a huge convenience. This commit
implements this, with special focus on keeping it source compatible to
a normal build with ANGLE linked at build-time.
Diffstat (limited to 'video/out/opengl/angle_dynamic.c')
-rw-r--r-- | video/out/opengl/angle_dynamic.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/video/out/opengl/angle_dynamic.c b/video/out/opengl/angle_dynamic.c new file mode 100644 index 0000000000..f4540c473a --- /dev/null +++ b/video/out/opengl/angle_dynamic.c @@ -0,0 +1,33 @@ +#include <pthread.h> +#include <windows.h> + +#define ANGLE_NO_ALIASES +#include "angle_dynamic.h" + +#include "common/common.h" + +#define ANGLE_DECL(NAME, VAR) \ + VAR; +ANGLE_FNS(ANGLE_DECL) + +static bool angle_loaded; +static pthread_once_t angle_load_once = PTHREAD_ONCE_INIT; + +static void angle_do_load(void) +{ + // Note: we let this handle "leak", as the functions remain valid forever. + HANDLE angle_dll = LoadLibraryW(L"LIBEGL.DLL"); + if (!angle_dll) + return; +#define ANGLE_LOAD_ENTRY(NAME, VAR) \ + MP_CONCAT(PFN_, NAME) = (void *)GetProcAddress(angle_dll, #NAME); \ + if (!MP_CONCAT(PFN_, NAME)) return; + ANGLE_FNS(ANGLE_LOAD_ENTRY) + angle_loaded = true; +} + +bool angle_load(void) +{ + pthread_once(&angle_load_once, angle_do_load); + return angle_loaded; +} |