Cache Vello render output as stitchable textures (#3722)

* WIP render caching

* Hook up render cache to render pipeline

* Fixed offsets

* Initial cleanup

* Integrate cache with context invalidation

* Cleanup

* Improve rounding and reduce tile size to fix vello not rendering

* Include pointer position in cache key

* Avoid unwraps and zero sized textures

* Destroy textures after blitting to surface

* Fix context dependencies

* Exclude footprint from render params

* Batch animation frame messages

* Add vello max render size to preference dialogue

* Remove unused import

* Reorder vello preference

* Clean up preferences dialog

* Apply review suggestions

* Cap max render region size

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

node-graph/nodes/gstd/src/render_node.rs

@@ -18,6 +18,9 @@ use std::sync::Arc;
 use vector_types::GradientStops;
 use wgpu_executor::RenderContext;
 
+// Re-export render_output_cache from render_cache module
+pub use crate::render_cache::render_output_cache;
+
 /// List of (canvas id, image data) pairs for embedding images as canvases in the final SVG string.
 type ImageData = HashMap<Image<Color>, u64>;
 
@@ -28,9 +31,9 @@ pub enum RenderIntermediateType {
 }
 #[derive(Clone, dyn_any::DynAny)]
 pub struct RenderIntermediate {
-	ty: RenderIntermediateType,
-	metadata: RenderMetadata,
-	contains_artboard: bool,
+	pub(crate) ty: RenderIntermediateType,
+	pub(crate) metadata: RenderMetadata,
+	pub(crate) contains_artboard: bool,
 }
 
 #[node_macro::node(category(""))]