vo_opengl: angle: rewrite with custom swap chain

This replaces the old backend that exclusively used EGL windowing with
one that can also use ANGLE's ability to render to directly to a
texture. The advantage of this is that it allows mpv to create the swap
chain itself and this allows mpv to use a flip-mode swap chain on a HWND
(which avoids problems with DirectComposition) and to use a longer swap
chain that has six backbuffers by default (which reportedly fixes
problems with rendering 24fps video on 24Hz monitors.)

Also, "screenshot window" should now work on DXGI 1.2 and up (Windows 8
and up.)

1 files changed, 6 insertions, 1 deletions

diff --git a/video/out/opengl/angle_dynamic.h b/video/out/opengl/angle_dynamic.h
index 87ad85c268..12a0c692eb 100644
--- a/video/out/opengl/angle_dynamic.h
+++ b/video/out/opengl/angle_dynamic.h
@@ -45,9 +45,12 @@
         (EGLDisplay, EGLint)) \
     FN(eglSwapBuffers, EGLBoolean (*EGLAPIENTRY PFN_eglSwapBuffers) \
         (EGLDisplay, EGLSurface)) \
+    FN(eglSwapInterval, EGLBoolean (*EGLAPIENTRY PFN_eglSwapInterval) \
+        (EGLDisplay, EGLint)) \
     FN(eglReleaseTexImage, EGLBoolean (*EGLAPIENTRY PFN_eglReleaseTexImage) \
         (EGLDisplay, EGLSurface, EGLint)) \
-    FN(eglTerminate, EGLBoolean (*EGLAPIENTRY PFN_eglTerminate)(EGLDisplay))
+    FN(eglTerminate, EGLBoolean (*EGLAPIENTRY PFN_eglTerminate)(EGLDisplay)) \
+    FN(eglWaitClient, EGLBoolean (*EGLAPIENTRY PFN_eglWaitClient)(void))
 
 #define ANGLE_EXT_DECL(NAME, VAR) \
     extern VAR;
@@ -76,7 +79,9 @@ bool angle_load(void);
 #define eglQueryString                  PFN_eglQueryString
 #define eglReleaseTexImage              PFN_eglReleaseTexImage
 #define eglSwapBuffers                  PFN_eglSwapBuffers
+#define eglSwapInterval                 PFN_eglSwapInterval
 #define eglTerminate                    PFN_eglTerminate
+#define eglWaitClient                   PFN_eglWaitClient
 #endif
 
 #endif