🎉 Shape opacity for wasm render

render-wasm/src/main.rs

@@ -166,6 +166,14 @@ pub extern "C" fn set_shape_blend_mode(mode: i32) {
     }
 }
 
+#[no_mangle]
+pub extern "C" fn set_shape_opacity(opacity: f32) {
+    let state = unsafe { STATE.as_mut() }.expect("got an invalid state pointer");
+    if let Some(shape) = state.current_shape() {
+        shape.opacity = opacity;
+    }
+}
+
 fn main() {
     init_gl();
 }

render-wasm/src/render.rs

@@ -164,6 +164,7 @@ impl RenderState {
 
         let mut paint = skia::Paint::default();
         paint.set_blend_mode(shape.blend_mode.into());
+        paint.set_alpha_f(shape.opacity);
         self.drawing_surface.draw(
             &mut self.final_surface.canvas(),
             (0.0, 0.0),

render-wasm/src/shapes.rs

@@ -104,6 +104,7 @@ pub struct Shape {
     pub rotation: f32,
     fills: Vec<Fill>,
     pub blend_mode: BlendMode,
+    pub opacity: f32,
 }
 
 impl Shape {
@@ -117,6 +118,7 @@ impl Shape {
             rotation: 0.,
             fills: vec![],
             blend_mode: BlendMode::default(),
+            opacity: 1.,
         }
     }