render: split rendering into two phases

In the first phase we collect a list of simple operations (copying
textures and filling rectangles.)

In the second phase we send this list to the graphics API to be
executed.

As part of this, we also remove the use of scissors.

src/tree/container.rs

@@ -1085,7 +1085,14 @@ impl Node for ContainerNode {
             .node_child_active_changed(self.deref(), active, depth + 1);
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_container(self, x, y);
     }
 

src/tree/display.rs

@@ -111,7 +111,14 @@ impl Node for DisplayNode {
         FindTreeResult::AcceptsInput
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_display(self, x, y);
     }
 

src/tree/float.rs

@@ -420,7 +420,14 @@ impl Node for FloatNode {
         }
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_floating(self, x, y)
     }
 

src/tree/output.rs

@@ -77,7 +77,7 @@ pub async fn output_render_data(state: Rc<State>) {
 }
 
 impl OutputNode {
-    pub fn perform_screencopies(&self, fb: &Framebuffer, tex: &Texture) {
+    pub fn perform_screencopies(&self, fb: &Framebuffer, tex: &Rc<Texture>) {
         if let Some(workspace) = self.workspace.get() {
             if !workspace.capture.get() {
                 return;
@@ -620,7 +620,14 @@ impl Node for OutputNode {
         FindTreeResult::AcceptsInput
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_output(self, x, y);
     }
 

src/tree/placeholder.rs

@@ -122,7 +122,14 @@ impl Node for PlaceholderNode {
         FindTreeResult::AcceptsInput
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_placeholder(self, x, y);
     }
 

src/tree/workspace.rs

@@ -170,7 +170,14 @@ impl Node for WorkspaceNode {
         FindTreeResult::AcceptsInput
     }
 
-    fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32) {
+    fn node_render(
+        &self,
+        renderer: &mut Renderer,
+        x: i32,
+        y: i32,
+        _max_width: i32,
+        _max_height: i32,
+    ) {
         renderer.render_workspace(self, x, y);
     }