panfrost: Set modifier_constant to true for exported resources

Not actually seen in the wild but could theoretically be a problem for
applications that explicitly import/export resources.

v2: Set it on exporting as well as importing (Daniel Stone)

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6717>

diff --git a/src/gallium/drivers/panfrost/pan_resource.c b/src/gallium/drivers/panfrost/pan_resource.c
index f39ac1c..54802ef 100644 (file)
--- a/src/gallium/drivers/panfrost/pan_resource.c
+++ b/src/gallium/drivers/panfrost/pan_resource.c
@@ -79,6 +79,7 @@ panfrost_resource_from_handle(struct pipe_screen *pscreen,
         rsc->internal_format = templat->format;
         rsc->modifier = (whandle->modifier == DRM_FORMAT_MOD_INVALID) ?
                 DRM_FORMAT_MOD_LINEAR : whandle->modifier;
+        rsc->modifier_constant = true;
         rsc->slices[0].stride = whandle->stride;
         rsc->slices[0].offset = whandle->offset;
         rsc->slices[0].initialized = true;
@@ -118,6 +119,7 @@ panfrost_resource_get_handle(struct pipe_screen *pscreen,
         struct renderonly_scanout *scanout = rsrc->scanout;
 
         handle->modifier = rsrc->modifier;
+        rsrc->modifier_constant = true;
 
         if (handle->type == WINSYS_HANDLE_TYPE_SHARED) {
                 return false;