From 65f107686e6449de6b3cb603397a7f2aa0e60f8b Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <mailroxas@gmail.com>
Date: Thu, 26 Jan 2017 09:24:35 +0200
Subject: Drop only half frames, add warning for drops

---
 glcapture.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'glcapture.c')

diff --git a/glcapture.c b/glcapture.c
index 37a0e81..d1c7b89 100644
--- a/glcapture.c
+++ b/glcapture.c
@@ -455,10 +455,12 @@ capture_frame(struct gl *gl, const GLint view[4])
 {
    static __thread uint64_t last_time;
    const uint64_t ts = get_time_ns();
-   const uint64_t rate = 1e9 / FPS;
+   const uint64_t rate = (1e9 / FPS) / 2;
 
-   if (DROP_FRAMES && last_time > 0 && ts - last_time < rate)
+   if (DROP_FRAMES && last_time > 0 && ts - last_time <= rate) {
+      WARNX("WARNING: dropping frame (%.2f <= %.2f)", (ts - last_time) / 1e6, rate / 1e6);
       return;
+   }
 
    last_time = ts;
 
-- 
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