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glx: Unify dri2/dri3 vblank_mode logic.

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We need it from kopper, as well.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17470>
This commit is contained in:
Emma Anholt
2022-07-11 12:01:27 -07:00
committed by Marge Bot
parent f9ecf99ca9
commit ff18be0872
6 changed files with 69 additions and 88 deletions
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53
src/loader/loader_dri_helper.c
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@@ -72,3 +72,56 @@ __DRIimage *loader_dri_create_image(__DRIscreen *screen,
return image->createImage(screen, width, height, dri_format, dri_usage,
loaderPrivate);
}
/* From driconf.h, user exposed so should be stable */
#define DRI_CONF_VBLANK_NEVER 0
#define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
static int dri_vblank_mode(__DRIscreen *driScreen, const __DRI2configQueryExtension *config)
{
GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
if (config)
config->configQueryi(driScreen, "vblank_mode", &vblank_mode);
return vblank_mode;
}
int dri_get_initial_swap_interval(__DRIscreen *driScreen,
const __DRI2configQueryExtension *config)
{
int vblank_mode = dri_vblank_mode(driScreen, config);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
case DRI_CONF_VBLANK_DEF_INTERVAL_0:
return 0;
case DRI_CONF_VBLANK_DEF_INTERVAL_1:
case DRI_CONF_VBLANK_ALWAYS_SYNC:
default:
return 1;
}
}
bool dri_valid_swap_interval(__DRIscreen *driScreen,
const __DRI2configQueryExtension *config, int interval)
{
int vblank_mode = dri_vblank_mode(driScreen, config);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
if (interval != 0)
return false;
break;
case DRI_CONF_VBLANK_ALWAYS_SYNC:
if (interval <= 0)
return false;
break;
default:
break;
}
return true;
}