---
common.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/common.c b/common.c
index 4bf3c5a..e63bb39 100644
--- a/common.c
+++ b/common.c
@@ -31,10 +31,23 @@
static struct gbm gbm;
+#ifndef DRM_FORMAT_MOD_LINEAR
+#define DRM_FORMAT_MOD_LINEAR 0
+#endif
+static int
+get_modifiers(uint64_t **mods)
+{
+ /* Assumed LINEAR is supported everywhere */
+ static uint64_t modifiers[] = {DRM_FORMAT_MOD_LINEAR};
+ *mods = modifiers;
+ return 1;
+}
+
const struct gbm * init_gbm(int drm_fd, int w, int h)
{
gbm.dev = gbm_create_device(drm_fd);
+#ifndef HAVE_GBM_MODIFIERS
gbm.surface = gbm_surface_create(gbm.dev, w, h,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
@@ -42,6 +55,12 @@ const struct gbm * init_gbm(int drm_fd, int w, int h)
printf("failed to create gbm surface\n");
return NULL;
}
+#else
+ uint64_t *mods;
+ int count = get_modifiers(&mods);
+ gbm.surface = gbm_surface_create_with_modifiers(gbm.dev, w, h,
+ GBM_FORMAT_XRGB8888, mods, count);
+#endif
gbm.width = w;
gbm.height = h;
--
2.12.2
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