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gl_drm: Use the same gbm_device for multiple instances 

If we want to share a gl context (we do) between multiple instances of
gl_drm, we need to make sure they all use the same gbm_device.

This resolves a blocker for multi-output on the gl_drm backend.
This commit is contained in:
Derek Foreman 2017-11-21 12:26:17 -06:00
parent 7cdbe6e029
commit cbbac076f4
1 changed files with 17 additions and 1 deletions
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18
src/modules/evas/engines/gl_drm/evas_engine.c
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@ -34,6 +34,8 @@ int _extn_have_buffer_age = 1;
static Eina_Bool initted = EINA_FALSE;
static Eina_Bool dmabuf_present = EINA_FALSE;
static int gl_wins = 0;
static struct gbm_device *gbm_dev = NULL;
static int gbm_dev_refs = 0;
/* local function prototype types */
typedef void (*glsym_func_void)();
@ -125,6 +127,13 @@ eng_gbm_init(Evas_Engine_Info_GL_Drm *info)
int fd;
if (!info) return EINA_FALSE;
if (gbm_dev)
{
info->info.gbm = gbm_dev;
gbm_dev_refs++;
return EINA_TRUE;
}
fd = ecore_drm2_device_fd_get(info->info.dev);
if (!(info->info.gbm = gbm_create_device(fd)))
{
@ -132,6 +141,8 @@ eng_gbm_init(Evas_Engine_Info_GL_Drm *info)
return EINA_FALSE;
}
gbm_dev = info->info.gbm;
gbm_dev_refs = 1;
return EINA_TRUE;
}
@ -142,8 +153,13 @@ eng_gbm_shutdown(Evas_Engine_Info_GL_Drm *info)
if (info->info.gbm)
{
gbm_device_destroy(info->info.gbm);
gbm_dev_refs--;
info->info.gbm = NULL;
if (!gbm_dev_refs)
{
gbm_device_destroy(gbm_dev);
gbm_dev = NULL;
}
}
return EINA_TRUE;