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output-kms: Change SYNC_TOLERANCE from 1% to 0.001Hz

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1% of 60Hz is 0.6Hz so it was losing the usual two decimal places
precision you would expect as a minimum. Now we use three to be sure.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2465>
This commit is contained in:
Daniel van Vugt 2022-06-15 18:17:23 +08:00 committed by Marge Bot
parent f6e24c6293
commit b5169f2567
1 changed files with 4 additions and 4 deletions
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8
src/backends/native/meta-output-kms.c
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@ -38,7 +38,7 @@
#include "backends/native/meta-crtc-kms.h" #include "backends/native/meta-crtc-kms.h"
#include "backends/native/meta-crtc-mode-kms.h" #include "backends/native/meta-crtc-mode-kms.h"
#define SYNC_TOLERANCE 0.01 /* 1 percent */ #define SYNC_TOLERANCE_HZ 0.001
struct _MetaOutputKms struct _MetaOutputKms
{ {
@ -204,7 +204,7 @@ add_common_modes (MetaOutputInfo *output_info,
} }
max_refresh_rate = MAX (max_refresh_rate, 60.0); max_refresh_rate = MAX (max_refresh_rate, 60.0);
max_refresh_rate *= (1 + SYNC_TOLERANCE); max_refresh_rate += SYNC_TOLERANCE_HZ;
kms_device = meta_gpu_kms_get_kms_device (gpu_kms); kms_device = meta_gpu_kms_get_kms_device (gpu_kms);
@ -240,8 +240,8 @@ add_common_modes (MetaOutputInfo *output_info,
if (drm_mode->hdisplay == crtc_mode_info->width && if (drm_mode->hdisplay == crtc_mode_info->width &&
drm_mode->vdisplay == crtc_mode_info->height && drm_mode->vdisplay == crtc_mode_info->height &&
fabs (1 - (refresh_rate / crtc_mode_info->refresh_rate)) < (fabs (refresh_rate - crtc_mode_info->refresh_rate) <
SYNC_TOLERANCE) SYNC_TOLERANCE_HZ))
{ {
is_duplicate = TRUE; is_duplicate = TRUE;
break; break;