Added conditional configurations for WASM target for gradients & storage buffers, since storage buffers are not supported on wgpu WASM target at the moment.

graphics/src/triangle.rs

@@ -1,5 +1,7 @@
 //! Draw geometry using meshes of triangles.
-use crate::{Color, Gradient};
+use crate::Color;
+#[cfg(not(target_arch = "wasm32"))]
+use crate::Gradient;
 
 use bytemuck::{Pod, Zeroable};
 
@@ -27,6 +29,7 @@ pub struct Vertex2D {
 pub enum Style {
     /// Fill a primitive with a solid color.
     Solid(Color),
+    #[cfg(not(target_arch = "wasm32"))]
     /// Fill a primitive with an interpolated color.
     Gradient(Gradient),
 }
@@ -37,6 +40,7 @@ impl From<Color> for Style {
     }
 }
 
+#[cfg(not(target_arch = "wasm32"))]
 impl From<Gradient> for Style {
     fn from(gradient: Gradient) -> Self {
         Self::Gradient(gradient)

graphics/src/widget/canvas/frame.rs

@@ -76,6 +76,7 @@ impl Transform {
     fn transform_style(&self, style: triangle::Style) -> triangle::Style {
         match style {
             triangle::Style::Solid(color) => triangle::Style::Solid(color),
+            #[cfg(not(target_arch = "wasm32"))]
             triangle::Style::Gradient(gradient) => {
                 triangle::Style::Gradient(self.transform_gradient(gradient))
             }