Implement render_target_was_used API so that Viewports can properly check if they have been used.

For the RD renderer, this does not work for Viewports used in scene shaders yet

2 files changed, 3 insertions, 0 deletions

diff --git a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
index 3d1e04fe99..7726a2a434 100644
--- a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
@@ -348,6 +348,7 @@ void RenderForwardClustered::_render_list_template(RenderingDevice::DrawListID p
 #endif
 				material_uniform_set = surf->material_uniform_set;
 				shader = surf->shader;
+				surf->material->set_as_used();
 #ifdef DEBUG_ENABLED
 			}
 #endif
@@ -3378,6 +3379,7 @@ void RenderForwardClustered::_geometry_instance_add_surface_with_material(Geomet
 	sdcache->flags = flags;
 
 	sdcache->shader = p_material->shader_data;
+	sdcache->material = p_material;
 	sdcache->material_uniform_set = p_material->uniform_set;
 	sdcache->surface = mesh_storage->mesh_get_surface(p_mesh, p_surface);
 	sdcache->primitive = mesh_storage->mesh_surface_get_primitive(sdcache->surface);
diff --git a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h
index d9145b5818..a5e8bb76d9 100644
--- a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h
+++ b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h
@@ -441,6 +441,7 @@ class RenderForwardClustered : public RendererSceneRenderRD {
 		void *surface = nullptr;
 		RID material_uniform_set;
 		SceneShaderForwardClustered::ShaderData *shader = nullptr;
+		SceneShaderForwardClustered::MaterialData *material = nullptr;
 
 		void *surface_shadow = nullptr;
 		RID material_uniform_set_shadow;