feat(engine): add mesh usage option to renderer::Command::CreateMeshHEADmaster

1 files changed, 16 insertions, 0 deletions

diff --git a/engine/src/renderer.rs b/engine/src/renderer.rs
index 725f208..d7ce02e 100644
--- a/engine/src/renderer.rs
+++ b/engine/src/renderer.rs
@@ -177,6 +177,8 @@ pub enum Command
         /// If `obj_id` is [`ObjectId::Asset`], this mesh data will be used instead of
         /// the mesh data stored in the asset.
         mesh: Option<Mesh>,
+
+        usage: MeshUsage,
     },
     DrawMesh(ObjectId),
     SetPolygonModeConfig(PolygonModeConfig),
@@ -191,6 +193,19 @@ bitflags! {
     }
 }
 
+#[derive(Debug, Clone, Copy)]
+pub enum MeshUsage
+{
+    /// The mesh data is set only once and used by the GPU at most a few times.
+    Stream,
+
+    /// The mesh data is set only once and used many times.
+    Static,
+
+    /// The mesh data is changed a lot and used many times.
+    Dynamic,
+}
+
 /// Renderer command FIFO queue.
 ///
 /// This component is present in renderer context entities.
@@ -428,6 +443,7 @@ pub fn add_main_render_passes(
                     render_pass.commands.push(Command::CreateMesh {
                         obj_id: ObjectId::Asset(mesh_asset.id()),
                         mesh: None,
+                        usage: MeshUsage::Static,
                     });
                 }