Merge pull request #79874 from clayjohn/PlaceholderTexture-rid

Lazily allocate RIDs for PlaceholderTextures to avoid allocating GPU resources unless used

scene/resources/placeholder_textures.cpp

@@ -51,6 +51,9 @@ Ref<Image> PlaceholderTexture2D::get_image() const {
 }
 
 RID PlaceholderTexture2D::get_rid() const {
+	if (rid.is_null()) {
+		rid = RenderingServer::get_singleton()->texture_2d_placeholder_create();
+	}
 	return rid;
 }
 
@@ -61,12 +64,13 @@ void PlaceholderTexture2D::_bind_methods() {
 }
 
 PlaceholderTexture2D::PlaceholderTexture2D() {
-	rid = RS::get_singleton()->texture_2d_placeholder_create();
 }
 
 PlaceholderTexture2D::~PlaceholderTexture2D() {
 	ERR_FAIL_NULL(RenderingServer::get_singleton());
-	RS::get_singleton()->free(rid);
+	if (rid.is_valid()) {
+		RS::get_singleton()->free(rid);
+	}
 }
 
 ///////////////////////////////////////////////
@@ -103,6 +107,13 @@ Vector<Ref<Image>> PlaceholderTexture3D::get_data() const {
 	return Vector<Ref<Image>>();
 }
 
+RID PlaceholderTexture3D::get_rid() const {
+	if (rid.is_null()) {
+		rid = RenderingServer::get_singleton()->texture_3d_placeholder_create();
+	}
+	return rid;
+}
+
 void PlaceholderTexture3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_size", "size"), &PlaceholderTexture3D::set_size);
 	ClassDB::bind_method(D_METHOD("get_size"), &PlaceholderTexture3D::get_size);
@@ -110,11 +121,12 @@ void PlaceholderTexture3D::_bind_methods() {
 }
 
 PlaceholderTexture3D::PlaceholderTexture3D() {
-	rid = RS::get_singleton()->texture_3d_placeholder_create();
 }
 PlaceholderTexture3D::~PlaceholderTexture3D() {
 	ERR_FAIL_NULL(RenderingServer::get_singleton());
-	RS::get_singleton()->free(rid);
+	if (rid.is_valid()) {
+		RS::get_singleton()->free(rid);
+	}
 }
 
 /////////////////////////////////////////////////
@@ -159,6 +171,13 @@ Ref<Image> PlaceholderTextureLayered::get_layer_data(int p_layer) const {
 	return Ref<Image>();
 }
 
+RID PlaceholderTextureLayered::get_rid() const {
+	if (rid.is_null()) {
+		rid = RS::get_singleton()->texture_2d_layered_placeholder_create(RS::TextureLayeredType(layered_type));
+	}
+	return rid;
+}
+
 void PlaceholderTextureLayered::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_size", "size"), &PlaceholderTextureLayered::set_size);
 	ClassDB::bind_method(D_METHOD("get_size"), &PlaceholderTextureLayered::get_size);
@@ -169,9 +188,10 @@ void PlaceholderTextureLayered::_bind_methods() {
 
 PlaceholderTextureLayered::PlaceholderTextureLayered(LayeredType p_type) {
 	layered_type = p_type;
-	rid = RS::get_singleton()->texture_2d_layered_placeholder_create(RS::TextureLayeredType(layered_type));
 }
 PlaceholderTextureLayered::~PlaceholderTextureLayered() {
 	ERR_FAIL_NULL(RenderingServer::get_singleton());
-	RS::get_singleton()->free(rid);
+	if (rid.is_valid()) {
+		RS::get_singleton()->free(rid);
+	}
 }

scene/resources/placeholder_textures.h

@@ -36,7 +36,7 @@
 class PlaceholderTexture2D : public Texture2D {
 	GDCLASS(PlaceholderTexture2D, Texture2D)
 
-	RID rid;
+	mutable RID rid;
 	Size2 size = Size2(1, 1);
 
 protected:
@@ -59,7 +59,7 @@ public:
 class PlaceholderTexture3D : public Texture3D {
 	GDCLASS(PlaceholderTexture3D, Texture3D)
 
-	RID rid;
+	mutable RID rid;
 	Vector3i size = Vector3i(1, 1, 1);
 
 protected:
@@ -74,6 +74,7 @@ public:
 	virtual int get_depth() const override;
 	virtual bool has_mipmaps() const override;
 	virtual Vector<Ref<Image>> get_data() const override;
+	virtual RID get_rid() const override;
 
 	PlaceholderTexture3D();
 	~PlaceholderTexture3D();
@@ -82,7 +83,7 @@ public:
 class PlaceholderTextureLayered : public TextureLayered {
 	GDCLASS(PlaceholderTextureLayered, TextureLayered)
 
-	RID rid;
+	mutable RID rid;
 	Size2i size = Size2i(1, 1);
 	int layers = 1;
 	LayeredType layered_type = LAYERED_TYPE_2D_ARRAY;
@@ -101,6 +102,7 @@ public:
 	virtual int get_layers() const override;
 	virtual bool has_mipmaps() const override;
 	virtual Ref<Image> get_layer_data(int p_layer) const override;
+	virtual RID get_rid() const override;
 
 	PlaceholderTextureLayered(LayeredType p_type);
 	~PlaceholderTextureLayered();