gbm: check for dmabuf import on device creation

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30472>

src/gbm/backends/dri/gbm_dri.c

@@ -50,6 +50,8 @@
 #include "util/u_debug.h"
 #include "util/macros.h"
 #include "dri_util.h"
+#include "pipe/p_screen.h"
+#include "dri_screen.h"
 
 /* For importing wl_buffer */
 #if HAVE_WAYLAND_PLATFORM
@@ -1236,6 +1238,13 @@ dri_device_create(int fd, uint32_t gbm_backend_version)
    if (ret)
       goto err_dri;
 
+   struct dri_screen *screen = dri_screen(dri->screen);
+   struct pipe_screen *pscreen = screen->base.screen;
+#ifdef HAVE_DRI3
+   if (pscreen->get_param(pscreen, PIPE_CAP_DMABUF) & DRM_PRIME_CAP_IMPORT)
+      dri->has_dmabuf_import = true;
+#endif
+
    return &dri->base;
 
 err_dri:

src/gbm/backends/dri/gbm_driint.h

@@ -52,6 +52,7 @@ struct gbm_dri_device {
    char *driver_name; /* Name of the DRI module, without the _dri suffix */
    bool software; /* A software driver was loaded */
    bool swrast; /* this is swrast */
+   bool has_dmabuf_import;
 
    __DRIscreen *screen;
    __DRIcontext *context;

src/gbm/meson.build

@@ -16,7 +16,7 @@ args_gbm = [
 ]
 deps_gbm = []
 incs_gbm = [
-  include_directories('main'), inc_include, inc_src, inc_loader, inc_gallium, inc_st_dri
+  include_directories('main'), inc_include, inc_src, inc_loader, inc_gallium, inc_st_dri, inc_gallium_aux
 ]
 
 # TODO: fix includes to delete this