From fde20d10bcacebf61aff42ab1f48ac72023a2aa5 Mon Sep 17 00:00:00 2001 From: wm4 Date: Wed, 11 May 2016 12:33:49 +0200 Subject: 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. --- video/out/opengl/angle_dynamic.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 video/out/opengl/angle_dynamic.c (limited to 'video/out/opengl/angle_dynamic.c') 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 +#include + +#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; +} -- cgit v1.2.3