vo_opengl: add time queries

To avoid blocking the CPU, we use 8 time objects and rotate through
them, only blocking until the last possible moment (before we need
access to them on the next iteration through the ring buffer). I tested
it out on my machine and 4 query objects were enough to guarantee
block-free querying, but the extra margin shouldn't hurt.

Frame render times are just output at the end of each frame, via MP_DBG.
This might be improved in the future. (In particular, I want to expose
these numbers as properties so that users get some more visible feedback
about render times)

Currently, we measure pass_render_frame and pass_draw_to_screen
separately because the former might be called multiple times due to
interpolation. Doing it this way gives more faithful numbers. Same goes
for frame upload times.

1 files changed, 11 insertions, 0 deletions

diff --git a/video/out/opengl/common.h b/video/out/opengl/common.h
index ed12732bfc..ea5442b4ff 100644
--- a/video/out/opengl/common.h
+++ b/video/out/opengl/common.h
@@ -186,6 +186,17 @@ struct GL {
     GLenum (GLAPIENTRY *ClientWaitSync)(GLsync, GLbitfield, GLuint64);
     void (GLAPIENTRY *DeleteSync)(GLsync sync);
 
+    void (GLAPIENTRY *GenQueries)(GLsizei, GLuint *);
+    void (GLAPIENTRY *DeleteQueries)(GLsizei, const GLuint *);
+    void (GLAPIENTRY *BeginQuery)(GLenum,  GLuint);
+    void (GLAPIENTRY *EndQuery)(GLenum);
+    void (GLAPIENTRY *QueryCounter)(GLuint, GLenum);
+    GLboolean (GLAPIENTRY *IsQuery)(GLuint);
+    void (GLAPIENTRY *GetQueryObjectiv)(GLuint, GLenum, GLint *);
+    void (GLAPIENTRY *GetQueryObjecti64v)(GLuint, GLenum, GLint64 *);
+    void (GLAPIENTRY *GetQueryObjectuiv)(GLuint, GLenum, GLuint *);
+    void (GLAPIENTRY *GetQueryObjectui64v)(GLuint, GLenum, GLuint64 *);
+
     void (GLAPIENTRY *VDPAUInitNV)(const GLvoid *, const GLvoid *);
     void (GLAPIENTRY *VDPAUFiniNV)(void);
     GLvdpauSurfaceNV (GLAPIENTRY *VDPAURegisterOutputSurfaceNV)