feat(engine): add RemoveMesh renderer command

3 files changed, 48 insertions, 0 deletions

diff --git a/engine/src/renderer.rs b/engine/src/renderer.rs
index 68e8aed..0a889cf 100644
--- a/engine/src/renderer.rs
+++ b/engine/src/renderer.rs
@@ -191,6 +191,7 @@ pub enum Command
         mesh: Mesh,
         usage: MeshUsage,
     },
+    RemoveMesh(ObjectId),
     DrawMesh(ObjectId, DrawMeshOptions),
     UpdateDrawProperties(DrawProperties, DrawPropertiesUpdateFlags),
 }
diff --git a/engine/src/renderer/object.rs b/engine/src/renderer/object.rs
index 8e2254f..13be4a4 100644
--- a/engine/src/renderer/object.rs
+++ b/engine/src/renderer/object.rs
@@ -77,6 +77,11 @@ impl Store
         self.objects.insert(id, object);
     }
 
+    pub fn remove(&mut self, id: &Id) -> Option<Object>
+    {
+        self.objects.remove(id)
+    }
+
     pub fn entry(&mut self, id: Id) -> StoreEntry<'_>
     {
         StoreEntry { inner: self.objects.entry(id) }
diff --git a/engine/src/renderer/opengl.rs b/engine/src/renderer/opengl.rs
index a713d41..63842d3 100644
--- a/engine/src/renderer/opengl.rs
+++ b/engine/src/renderer/opengl.rs
@@ -1090,6 +1090,48 @@ fn handle_commands(
                         tracing::error!("Failed to update mesh: {err}");
                     }
                 }
+                RendererCommand::RemoveMesh(mesh_object_id) => {
+                    let Some(curr_gl_ctx) = &opt_curr_gl_ctx else {
+                        tracing::error!("No GL context is current");
+                        continue;
+                    };
+
+                    let Some(mesh_graphics_ctx_obj_key) = renderer_object_store
+                        .remove(&mesh_object_id)
+                        .map(|obj| obj.as_raw())
+                    else {
+                        tracing::error!(
+                            object_id=?mesh_object_id,
+                            "Object store does not contain a mesh object with this ID"
+                        );
+                        continue;
+                    };
+
+                    let Some(mesh_graphics_ctx_obj) =
+                        graphics_ctx_objects.remove(&mesh_graphics_ctx_obj_key)
+                    else {
+                        tracing::error!(
+                            object_id=?mesh_object_id,
+                            key=mesh_graphics_ctx_obj_key,
+                            "Graphics context does not contain a mesh object with this key"
+                        );
+                        continue;
+                    };
+
+                    #[allow(irrefutable_let_patterns)]
+                    let GraphicsContextObject::Mesh { mesh: mut graphics_mesh, .. } =
+                        mesh_graphics_ctx_obj
+                    else {
+                        tracing::error!(
+                            object_id=?mesh_object_id,
+                            key=mesh_graphics_ctx_obj_key,
+                            "Graphics context object with this key is not a mesh"
+                        );
+                        continue;
+                    };
+
+                    graphics_mesh.destroy(curr_gl_ctx);
+                }
                 RendererCommand::DrawMesh(mesh_object_id, draw_mesh_opts) => {
                     let Some(curr_gl_ctx) = &opt_curr_gl_ctx else {
                         tracing::error!("No GL context is current");