fix compilation errors in rendering more

com.unity.uiwidgets/Runtime/rendering/editable.cs

 using Canvas = Unity.UIWidgets.ui.Canvas;
 using Color = Unity.UIWidgets.ui.Color;
 using Rect = Unity.UIWidgets.ui.Rect;
+using StrutStyle = Unity.UIWidgets.ui.StrutStyle;
+using TextRange = Unity.UIWidgets.ui.TextRange;
 
 namespace Unity.UIWidgets.rendering {
     class EditableUtils {

com.unity.uiwidgets/Runtime/rendering/paragraph.cs

 using Canvas = Unity.UIWidgets.ui.Canvas;
 using Color = Unity.UIWidgets.ui.Color;
 using Rect = Unity.UIWidgets.ui.Rect;
+using StrutStyle = Unity.UIWidgets.ui.StrutStyle;
 
 namespace Unity.UIWidgets.rendering {
     public enum TextOverflow {

com.unity.uiwidgets/Runtime/rendering/proxy_box.cs

             D.assert(() => {
                 if (child != null) {
                     base.debugPaintSize(context, offset);
-                    Path offsetPath = new Path();
-                    offsetPath.addPath(_clip, offset);
-                    context.canvas.drawPath(offsetPath, _debugPaint);
+                    context.canvas.drawPath(_clip.shift(offset), _debugPaint);
                     _debugText.paint(context.canvas, offset);
                 }
 
             if (child != null) {
                 _updateClip();
                 Rect offsetBounds = offset & size;
-                Path offsetPath = new Path();
-                offsetPath.addPath(_clip, offset);
+                Path offsetPath = _clip.shift(offset);
 
                 PhysicalModelLayer physicalModel = new PhysicalModelLayer(
                     clipPath: offsetPath,
                     shadowColor: shadowColor);
+                
                 context.pushLayer(physicalModel, base.paint, offset, childPaintBounds: offsetBounds);
             }
         }

com.unity.uiwidgets/Runtime/rendering/texture.cs

 namespace Unity.UIWidgets.rendering {
     public class TextureBox : RenderBox {
 
-        public TextureBox(Texture texture = null) {
-            D.assert(texture != null);
-            _texture = texture;
+        public TextureBox(int textureId) {
+            D.assert(textureId != null);
+            _textureId = textureId;
-        public Texture texture {
-            get { return _texture; }
+        public int textureId {
+            get { return _textureId; }
-                if (value != _texture) {
-                    _texture = value;
+                if (value != _textureId) {
+                    _textureId = value;
-        Texture _texture;
+        int _textureId;
 
         protected override bool sizedByParent {
             get { return true; }
         }
 
         public override void paint(PaintingContext context, Offset offset) {
-            if (_texture == null) {
+            if (_textureId == null) {
-                texture: _texture
+                textureId: _textureId
             ));
         }
     }

com.unity.uiwidgets/Runtime/ui2/text.cs

 
         public readonly TextDirection direction;
 
-        Rect toRect() => Rect.fromLTRB((float) left, (float) top, (float) right, (float) bottom);
+        public Rect toRect() => Rect.fromLTRB((float) left, (float) top, (float) right, (float) bottom);
 
         public float start {
             get { return (direction == TextDirection.ltr) ? left : right; }