Attachment 133536 Details for Bug 102241 – Check for negative time stamp difference in wait_swap_interval()

[patch] Check for negative time stamp difference in wait_swap_interval()

0004-Check-for-negative-delta-in-wait_swap_interval.patch (text/plain), 1.03 KB, created by frank.richter on 2017-08-16 08:40:02 UTC

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Creator: frank.richter

Created: 2017-08-16 08:40:02 UTC

Size: 1.03 KB

patch

obsolete

>From 8975d87f66e6af35a98e6166ad3f90259105ae1c Mon Sep 17 00:00:00 2001
>From: Frank Richter <frank.richter@dynardo.de>
>Date: Mon, 14 Aug 2017 16:05:22 +0200
>Subject: [PATCH] Check for negative delta in wait_swap_interval()
>
>---
> src/gallium/state_trackers/wgl/stw_framebuffer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/src/gallium/state_trackers/wgl/stw_framebuffer.c b/src/gallium/state_trackers/wgl/stw_framebuffer.c
>index 321fbb6..1b95635 100644
>--- a/src/gallium/state_trackers/wgl/stw_framebuffer.c
>+++ b/src/gallium/state_trackers/wgl/stw_framebuffer.c
>@@ -602,7 +602,7 @@ wait_swap_interval(struct stw_framebuffer *fb)
>          1.0e6 / stw_dev->refresh_rate * stw_dev->swap_interval;
> 
>       /* if time since last swap is less than wait period, wait */
>-      if (delta < min_swap_period) {
>+      if ((delta >= 0) && (delta < min_swap_period)) {
>          float fudge = 1.75f;  /* emperical fudge factor */
>          int64_t wait = (min_swap_period - delta) * fudge;
>          os_time_sleep(wait);
>-- 
>2.11.1.windows.1
>

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