[mutter] cogl: Store CPU and GPU rendering timestamps in frame info

[Marge Bot <marge-bot src gnome org>]

commit f1024564a2651dda8beee5f39682369eb32dfade
Author: Ivan Molodetskikh <yalterz gmail com>
Date:   Wed Jan 6 15:39:30 2021 +0300

    cogl: Store CPU and GPU rendering timestamps in frame info
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1762>

 cogl/cogl/cogl-frame-info.c          |  3 ++-
 cogl/cogl/winsys/cogl-onscreen-egl.c | 16 ++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
---
diff --git a/cogl/cogl/cogl-frame-info.c b/cogl/cogl/cogl-frame-info.c
index 867740d974..adaf2bad98 100644
--- a/cogl/cogl/cogl-frame-info.c
+++ b/cogl/cogl/cogl-frame-info.c
@@ -126,7 +126,8 @@ cogl_frame_info_get_rendering_duration_ns (CoglFrameInfo *info)
 {
   int64_t gpu_time_rendering_done_ns;
 
-  if (!info->timestamp_query)
+  if (!info->timestamp_query ||
+      info->gpu_time_before_buffer_swap_ns == 0)
     return 0;
 
   gpu_time_rendering_done_ns =
diff --git a/cogl/cogl/winsys/cogl-onscreen-egl.c b/cogl/cogl/winsys/cogl-onscreen-egl.c
index 347e2071cb..20b3c60efe 100644
--- a/cogl/cogl/winsys/cogl-onscreen-egl.c
+++ b/cogl/cogl/winsys/cogl-onscreen-egl.c
@@ -28,6 +28,7 @@
 #include "winsys/cogl-onscreen-egl.h"
 
 #include "cogl-context-private.h"
+#include "cogl-frame-info-private.h"
 #include "cogl-renderer-private.h"
 #include "cogl-trace.h"
 #include "winsys/cogl-winsys-egl-private.h"
@@ -269,6 +270,21 @@ cogl_onscreen_egl_swap_buffers_with_damage (CoglOnscreen  *onscreen,
                                         COGL_FRAMEBUFFER (onscreen),
                                         COGL_FRAMEBUFFER_STATE_BIND);
 
+  if (cogl_has_feature (context, COGL_FEATURE_ID_GET_GPU_TIME))
+    {
+      info->gpu_time_before_buffer_swap_ns =
+        cogl_context_get_gpu_time_ns (context);
+    }
+
+  info->cpu_time_before_buffer_swap_us = g_get_monotonic_time ();
+
+  /* Set up a timestamp query for when all rendering will be finished. */
+  if (cogl_has_feature (context, COGL_FEATURE_ID_TIMESTAMP_QUERY))
+    {
+      info->timestamp_query =
+        cogl_framebuffer_create_timestamp_query (COGL_FRAMEBUFFER (onscreen));
+    }
+
   if (n_rectangles && egl_renderer->pf_eglSwapBuffersWithDamage)
     {
       CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);