Fix T75736 Viewport update problem when switching between view layers

The problem comes from the fact by no data being modified when switching
viewlayers.

To follow what the external render engines do, we completely reset the
viewport by freeing the GPUViewport to avoid any cached data from being
kept.

1 files changed, 2 insertions, 4 deletions

diff --git a/source/blender/draw/engines/workbench/workbench_data.c b/source/blender/draw/engines/workbench/workbench_data.c
index 24d95a13ee8..2e8119fca2f 100644
--- a/source/blender/draw/engines/workbench/workbench_data.c
+++ b/source/blender/draw/engines/workbench/workbench_data.c
@@ -217,8 +217,7 @@ void workbench_private_data_init(WORKBENCH_PrivateData *wpd)
   if (!v3d || (v3d->shading.type == OB_RENDER && BKE_scene_uses_blender_workbench(scene))) {
     /* FIXME: This reproduce old behavior when workbench was separated in 2 engines.
      * But this is a workaround for a missing update tagging from operators. */
-    if (scene->display.shading.type != wpd->shading.type ||
-        (v3d && (XRAY_ENABLED(v3d) != XRAY_ENABLED(&scene->display))) ||
+    if ((v3d && (XRAY_ENABLED(v3d) != XRAY_ENABLED(&scene->display))) ||
         (scene->display.shading.flag != wpd->shading.flag)) {
       wpd->view_updated = true;
     }
@@ -245,8 +244,7 @@ void workbench_private_data_init(WORKBENCH_PrivateData *wpd)
   else {
     /* FIXME: This reproduce old behavior when workbench was separated in 2 engines.
      * But this is a workaround for a missing update tagging from operators. */
-    if (v3d->shading.type != wpd->shading.type || XRAY_ENABLED(v3d) != XRAY_ENABLED(wpd) ||
-        v3d->shading.flag != wpd->shading.flag) {
+    if (XRAY_ENABLED(v3d) != XRAY_ENABLED(wpd) || v3d->shading.flag != wpd->shading.flag) {
       wpd->view_updated = true;
     }