fix mask render bug (didn't recreate bind group)

src/core/text/mod.rs

@@ -80,10 +80,24 @@ impl TextView {
         self.tex.as_ref()
     }
     pub fn desired_width(&mut self, ctx: &mut SizeCtx) -> Len {
-        Len::abs(self.render(ctx).size.x)
+        if let Some(hint) = &self.hint
+            && let [line] = &self.buf.lines[..]
+            && line.text().is_empty()
+        {
+            ctx.width(hint)
+        } else {
+            Len::abs(self.render(ctx).size.x)
+        }
     }
     pub fn desired_height(&mut self, ctx: &mut SizeCtx) -> Len {
-        Len::abs(self.render(ctx).size.y)
+        if let Some(hint) = &self.hint
+            && let [line] = &self.buf.lines[..]
+            && line.text().is_empty()
+        {
+            ctx.height(hint)
+        } else {
+            Len::abs(self.render(ctx).size.y)
+        }
     }
     pub fn draw(&mut self, painter: &mut Painter) -> UiRegion {
         let tex = self.render(&mut painter.size_ctx());

src/layout/painter.rs

@@ -1,6 +1,6 @@
 use crate::{
     layout::{
-        Axis, PrimitiveLayers, Len, Modules, Size, TextAttrs, TextBuffer, TextData, RenderedText,
+        Axis, Len, Modules, PrimitiveLayers, RenderedText, Size, TextAttrs, TextBuffer, TextData,
         TextureHandle, Textures, UiRegion, UiVec2, Vec2, WidgetId, Widgets,
     },
     render::{Mask, MaskIdx, Primitive, PrimitiveHandle, PrimitiveInst},

src/render/data.rs

@@ -44,7 +44,7 @@ impl MaskIdx {
 }
 
 #[repr(C)]
-#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
+#[derive(Debug, Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 pub struct Mask {
     pub region: UiRegion,
 }

src/render/mod.rs

@@ -96,15 +96,19 @@ impl UiRenderer {
                     device,
                     &self.primitive_layout,
                     rlayer.primitives.buffers(),
-                )
+                );
+                primitives.updated = false;
             }
         }
-        if self.textures.update(&mut ui.data.textures) {
+        let mut changed = false;
-            self.rsc_group = Self::rsc_group(device, &self.rsc_layout, &self.textures, &self.masks)
+        changed |= self.textures.update(&mut ui.data.textures);
-        }
         if ui.data.masks.changed {
             ui.data.masks.changed = false;
             self.masks.update(device, queue, &ui.data.masks[..]);
+            changed = true;
+        }
+        if changed {
+            self.rsc_group = Self::rsc_group(device, &self.rsc_layout, &self.textures, &self.masks);
         }
     }
 

src/render/primitive.rs

@@ -40,7 +40,7 @@ macro_rules! primitives {
     ($($name:ident: $ty:ty => $binding:expr,)*) => {
         #[derive(Default)]
         pub struct PrimitiveData {
-            $($name: PrimitiveVec<$ty>,)*
+            $(pub(crate) $name: PrimitiveVec<$ty>,)*
         }
 
         pub struct PrimitiveBuffers {
@@ -116,6 +116,7 @@ impl Primitives {
             mask_idx,
         }: PrimitiveInst<P>,
     ) -> PrimitiveHandle {
+        self.updated = true;
         let vec = P::vec(&mut self.data);
         let i = vec.add(primitive);
         let inst = PrimitiveInstance {
@@ -153,6 +154,7 @@ impl Primitives {
     }
 
     pub fn free(&mut self, h: &PrimitiveHandle) -> MaskIdx {
+        self.updated = true;
         self.data.free(h.binding, h.data_idx);
         self.free.push(h.inst_idx);
         self.instances[h.inst_idx].mask_idx