shaders: remove async from shader nodes not needing it

Author: Firestar99

node-graph/graster-nodes/src/adjustments.rs

@@ -297,7 +297,7 @@ fn levels<T: Adjust<Color>>(
 // https://stackoverflow.com/a/55233732/775283
 // Works the same for gamma and linear color
 #[node_macro::node(name("Black & White"), category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn black_and_white<T: Adjust<Color>>(
+fn black_and_white<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -370,7 +370,7 @@ async fn black_and_white<T: Adjust<Color>>(
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=%27hue%20%27%20%3D%20Old,saturation%2C%20Photoshop%205.0
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=0%20%3D%20Use%20other.-,Hue/Saturation,-Hue/Saturation%20settings
 #[node_macro::node(name("Hue/Saturation"), category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn hue_saturation<T: Adjust<Color>>(
+fn hue_saturation<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -405,7 +405,7 @@ async fn hue_saturation<T: Adjust<Color>>(
 // Aims for interoperable compatibility with:
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=%27%20%3D%20Color%20Lookup-,%27nvrt%27%20%3D%20Invert,-%27post%27%20%3D%20Posterize
 #[node_macro::node(category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn invert<T: Adjust<Color>>(
+fn invert<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -428,7 +428,7 @@ async fn invert<T: Adjust<Color>>(
 // Aims for interoperable compatibility with:
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=post%27%20%3D%20Posterize-,%27thrs%27%20%3D%20Threshold,-%27grdm%27%20%3D%20Gradient
 #[node_macro::node(category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn threshold<T: Adjust<Color>>(
+fn threshold<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -474,7 +474,7 @@ async fn threshold<T: Adjust<Color>>(
 // When both parameters are set, it is equivalent to running this adjustment twice, with only vibrance set and then only saturation set.
 // (Except for some noise probably due to rounding error.)
 #[node_macro::node(category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn vibrance<T: Adjust<Color>>(
+fn vibrance<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -640,7 +640,7 @@ pub enum DomainWarpType {
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=%27mixr%27%20%3D%20Channel%20Mixer
 // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=Lab%20color%20only-,Channel%20Mixer,-Key%20is%20%27mixr
 #[node_macro::node(category("Raster: Adjustment"), properties("channel_mixer_properties"), shader_node(PerPixelAdjust))]
-async fn channel_mixer<T: Adjust<Color>>(
+fn channel_mixer<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -769,7 +769,7 @@ pub enum SelectiveColorChoice {
 // Algorithm based on:
 // https://blog.pkh.me/p/22-understanding-selective-coloring-in-adobe-photoshop.html
 #[node_macro::node(category("Raster: Adjustment"), properties("selective_color_properties"), shader_node(PerPixelAdjust))]
-async fn selective_color<T: Adjust<Color>>(
+fn selective_color<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -912,7 +912,7 @@ async fn selective_color<T: Adjust<Color>>(
 // https://www.axiomx.com/posterize.htm
 // This algorithm produces fully accurate output in relation to the industry standard.
 #[node_macro::node(category("Raster: Adjustment"), shader_node(PerPixelAdjust))]
-async fn posterize<T: Adjust<Color>>(
+fn posterize<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -946,7 +946,7 @@ async fn posterize<T: Adjust<Color>>(
 // Algorithm based on:
 // https://geraldbakker.nl/psnumbers/exposure.html
 #[node_macro::node(category("Raster: Adjustment"), properties("exposure_properties"), shader_node(PerPixelAdjust))]
-async fn exposure<T: Adjust<Color>>(
+fn exposure<T: Adjust<Color>>(
 	_: impl Ctx,
 	#[implementations(
 		Color,

node-graph/graster-nodes/src/blending_nodes.rs

@@ -123,7 +123,7 @@ pub fn apply_blend_mode(foreground: Color, background: Color, blend_mode: BlendM
 }
 
 #[node_macro::node(category("Raster"), shader_node(PerPixelAdjust))]
-async fn blend<T: Blend<Color> + Send>(
+fn blend<T: Blend<Color> + Send>(
 	_: impl Ctx,
 	#[implementations(
 		Color,
@@ -195,7 +195,7 @@ mod test {
 	use graphene_core::table::Table;
 
 	#[tokio::test]
-	async fn color_overlay_multiply() {
+	fn color_overlay_multiply() {
 		let image_color = Color::from_rgbaf32_unchecked(0.7, 0.6, 0.5, 0.4);
 		let image = Image::new(1, 1, image_color);