Vertex and attribute compression to reduce the size of the vertex format.

This allows Godot to automatically compress meshes to save a lot of bandwidth.

In general, this requires no interaction from the user and should result in
no noticable quality loss.

This scheme is not backwards compatible, so we have provided an upgrade
mechanism, and a mesh versioning mechanism.

Existing meshes can still be used as a result, but users can get a
performance boost by reimporting assets.

1 files changed, 5 insertions, 5 deletions

diff --git a/scene/resources/surface_tool.h b/scene/resources/surface_tool.h
index eabdff19ca..2a8ad53525 100644
--- a/scene/resources/surface_tool.h
+++ b/scene/resources/surface_tool.h
@@ -136,7 +136,7 @@ private:
 	bool begun = false;
 	bool first = false;
 	Mesh::PrimitiveType primitive = Mesh::PRIMITIVE_LINES;
-	uint32_t format = 0;
+	uint64_t format = 0;
 	Ref<Material> material;
 	//arrays
 	LocalVector<Vertex> vertex_array;
@@ -158,8 +158,8 @@ private:
 
 	CustomFormat last_custom_format[RS::ARRAY_CUSTOM_COUNT];
 
-	void _create_list_from_arrays(Array arr, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat);
-	void _create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat);
+	void _create_list_from_arrays(Array arr, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint64_t &lformat);
+	void _create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint64_t &lformat);
 
 	//mikktspace callbacks
 	static int mikktGetNumFaces(const SMikkTSpaceContext *pContext);
@@ -219,12 +219,12 @@ public:
 	LocalVector<Vertex> &get_vertex_array() { return vertex_array; }
 
 	void create_from_triangle_arrays(const Array &p_arrays);
-	static void create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<Vertex> &ret, uint32_t *r_format = nullptr);
+	static void create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<Vertex> &ret, uint64_t *r_format = nullptr);
 	Array commit_to_arrays();
 	void create_from(const Ref<Mesh> &p_existing, int p_surface);
 	void create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name);
 	void append_from(const Ref<Mesh> &p_existing, int p_surface, const Transform3D &p_xform);
-	Ref<ArrayMesh> commit(const Ref<ArrayMesh> &p_existing = Ref<ArrayMesh>(), uint32_t p_compress_flags = 0);
+	Ref<ArrayMesh> commit(const Ref<ArrayMesh> &p_existing = Ref<ArrayMesh>(), uint64_t p_compress_flags = 0);
 
 	SurfaceTool();
 };