usergreen
/
efl
forked from enlightenment/efl
1
0
Fork 0
Code Pull Requests Activity

ecore-drm2: Add API to check if vblank is supported 

This patch adds a small API that we can use to check if the current
video driver supports the usage of drmWaitVBlank. This check is
required for certain drivers (like vbox) which do not support
drmWaitVBlank and thus are causing our animators in ecore_evas to
freeze. We can now use this API from within Ecore_Evas to disable
vsync'd animators and fall back to timer based ones.

@feature
This commit is contained in:
Christopher Michael 2019-05-22 07:35:45 -04:00
parent 3081d9b8ea
commit ead88ff2ad
2 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/lib/ecore_drm2/Ecore_Drm2.h
View File

@ -1196,6 +1196,17 @@ EAPI Eina_Bool ecore_drm2_output_pending_get(Ecore_Drm2_Output *output);
*/
EAPI Eina_Bool ecore_drm2_output_background_color_set(Ecore_Drm2_Output *output, uint64_t r, uint64_t g, uint64_t b, uint64_t a);
/**
* Check if vblank is supported by the current video driver
*
* @param dev
*
* @return EINA_TRUE if vblank is supported, EINA_FALSE otherwise
*
* @ingroup Ecore_Drm2_Device_Group
* @since 1.23 */
EAPI Eina_Bool ecore_drm2_vblank_supported(Ecore_Drm2_Device *dev);
# endif
#endif

17
src/lib/ecore_drm2/ecore_drm2_device.c
View File

@ -891,6 +891,23 @@ ecore_drm2_device_fd_get(Ecore_Drm2_Device *device)
return device->fd;
}
EAPI Eina_Bool
ecore_drm2_vblank_supported(Ecore_Drm2_Device *dev)
{
drmVBlank tmp;
int ret = 0;
EINA_SAFETY_ON_NULL_RETURN_VAL(dev, EINA_FALSE);
memset(&tmp, 0, sizeof(drmVBlank));
tmp.request.type = DRM_VBLANK_RELATIVE;
ret = sym_drmWaitVBlank(dev->fd, &tmp);
if (ret != 0) return EINA_FALSE;
return EINA_TRUE;
}
/* prevent crashing with old apps compiled against these functions */
EAPI void ecore_drm2_device_keyboard_cached_context_set(){};
EAPI void ecore_drm2_device_keyboard_cached_keymap_set(){};