Shaders: graster-nodes no-std fixups (#2984)

* wgpu-executor: remove useless features

* wgpu-executor: cleanup copy-pasted code

* gcore-shaders: no_std fixups

node-graph/gcore-shaders/Cargo.toml

@@ -7,7 +7,7 @@ authors = ["Graphite Authors <contact@graphite.rs>"]
 license = "MIT OR Apache-2.0"
 
 [features]
-std = ["dep:dyn-any", "dep:serde", "dep:specta", "dep:log"]
+std = ["dep:dyn-any", "dep:serde", "dep:specta", "dep:log", "half/std", "half/serde"]
 
 [dependencies]
 # Local std dependencies
@@ -16,7 +16,7 @@ dyn-any = { workspace = true, optional = true }
 # Workspace dependencies
 bytemuck = { workspace = true }
 glam = { version = "0.29", default-features = false, features = ["nostd-libm", "scalar-math"] }
-half = { workspace = true }
+half = { workspace = true, default-features = false }
 num-derive = { workspace = true }
 num-traits = { workspace = true }
 

node-graph/gcore-shaders/src/blending.rs

@@ -1,5 +1,7 @@
 use core::fmt::Display;
 use core::hash::{Hash, Hasher};
+#[cfg(target_arch = "spirv")]
+use num_traits::float::Float;
 
 #[derive(Debug, Clone, Copy, PartialEq)]
 #[cfg_attr(feature = "std", derive(dyn_any::DynAny, specta::Type, serde::Serialize, serde::Deserialize))]
@@ -24,7 +26,7 @@ impl Hash for AlphaBlending {
 	}
 }
 impl Display for AlphaBlending {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+	fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		let round = |x: f32| (x * 1e3).round() / 1e3;
 		write!(
 			f,
@@ -203,7 +205,7 @@ impl BlendMode {
 }
 
 impl Display for BlendMode {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+	fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		match self {
 			// Normal group
 			BlendMode::Normal => write!(f, "Normal"),

node-graph/gcore-shaders/src/color/color.rs

@@ -1,15 +1,17 @@
 use super::color_traits::{Alpha, AlphaMut, AssociatedAlpha, Luminance, LuminanceMut, Pixel, RGB, RGBMut, Rec709Primaries, SRGB};
 use super::discrete_srgb::{float_to_srgb_u8, srgb_u8_to_float};
 use bytemuck::{Pod, Zeroable};
+use core::fmt::Debug;
 use core::hash::Hash;
 use half::f16;
 #[cfg(target_arch = "spirv")]
-use spirv_std::num_traits::Euclid;
+use num_traits::Euclid;
 #[cfg(target_arch = "spirv")]
-use spirv_std::num_traits::float::Float;
+use num_traits::float::Float;
 
 #[repr(C)]
-#[derive(Debug, Default, Clone, Copy, PartialEq, Pod, Zeroable)]
+#[derive(Default, Clone, Copy, PartialEq, Pod, Zeroable)]
+#[cfg_attr(not(target_arch = "spirv"), derive(Debug))]
 #[cfg_attr(feature = "std", derive(dyn_any::DynAny, serde::Serialize, serde::Deserialize))]
 pub struct RGBA16F {
 	red: f16,
@@ -18,6 +20,14 @@ pub struct RGBA16F {
 	alpha: f16,
 }
 
+/// hack around half still masking out impl Debug for f16 on spirv
+#[cfg(target_arch = "spirv")]
+impl core::fmt::Debug for RGBA16F {
+	fn fmt(&self, _f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+		Ok(())
+	}
+}
+
 impl From<Color> for RGBA16F {
 	#[inline(always)]
 	fn from(c: Color) -> Self {
@@ -215,7 +225,7 @@ pub struct Color {
 
 #[allow(clippy::derived_hash_with_manual_eq)]
 impl Hash for Color {
-	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+	fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
 		self.red.to_bits().hash(state);
 		self.green.to_bits().hash(state);
 		self.blue.to_bits().hash(state);
@@ -256,7 +266,7 @@ impl AlphaMut for Color {
 }
 
 impl Pixel for Color {
-	#[cfg(not(target_arch = "spirv"))]
+	#[cfg(feature = "std")]
 	fn to_bytes(&self) -> Vec<u8> {
 		self.to_rgba8_srgb().to_vec()
 	}
@@ -793,6 +803,7 @@ impl Color {
 	/// let color = Color::from_rgba8_srgb(0x52, 0x67, 0xFA, 0x61); // Premultiplied alpha
 	/// assert_eq!("3240a261", color.to_rgba_hex_srgb()); // Equivalent hex incorporating premultiplied alpha
 	/// ```
+	#[cfg(feature = "std")]
 	pub fn to_rgba_hex_srgb(&self) -> String {
 		let gamma = self.to_gamma_srgb();
 		format!(
@@ -810,6 +821,7 @@ impl Color {
 	/// let color = Color::from_rgba8_srgb(0x52, 0x67, 0xFA, 0x61); // Premultiplied alpha
 	/// assert_eq!("3240a2", color.to_rgb_hex_srgb()); // Equivalent hex incorporating premultiplied alpha
 	/// ```
+	#[cfg(feature = "std")]
 	pub fn to_rgb_hex_srgb(&self) -> String {
 		self.to_gamma_srgb().to_rgb_hex_srgb_from_gamma()
 	}
@@ -820,6 +832,7 @@ impl Color {
 	/// let color = Color::from_rgba8_srgb(0x52, 0x67, 0xFA, 0x61); // Premultiplied alpha
 	/// assert_eq!("3240a2", color.to_rgb_hex_srgb()); // Equivalent hex incorporating premultiplied alpha
 	/// ```
+	#[cfg(feature = "std")]
 	pub fn to_rgb_hex_srgb_from_gamma(&self) -> String {
 		format!("{:02x?}{:02x?}{:02x?}", (self.r() * 255.) as u8, (self.g() * 255.) as u8, (self.b() * 255.) as u8)
 	}

node-graph/gcore-shaders/src/color/color_traits.rs

@@ -14,9 +14,9 @@ pub trait Linear {
 	fn lerp(self, other: Self, value: Self) -> Self
 	where
 		Self: Sized + Copy,
-		Self: std::ops::Sub<Self, Output = Self>,
-		Self: std::ops::Mul<Self, Output = Self>,
-		Self: std::ops::Add<Self, Output = Self>,
+		Self: core::ops::Sub<Self, Output = Self>,
+		Self: core::ops::Mul<Self, Output = Self>,
+		Self: core::ops::Add<Self, Output = Self>,
 	{
 		self + (other - self) * value
 	}
@@ -97,7 +97,7 @@ pub trait SRGB: Rec709Primaries {}
 
 // TODO: Come up with a better name for this trait
 pub trait Pixel: Clone + Pod + Zeroable + Default {
-	#[cfg(not(target_arch = "spirv"))]
+	#[cfg(feature = "std")]
 	fn to_bytes(&self) -> Vec<u8> {
 		bytemuck::bytes_of(self).to_vec()
 	}

node-graph/gcore-shaders/src/color/discrete_srgb.rs

@@ -69,7 +69,7 @@ pub fn float_to_srgb_u8(mut f: f32) -> u8 {
 		// We clamped f to [0, 1], and the integer representations
 		// of the positive finite non-NaN floats are monotonic.
 		// This makes the later LUT lookup panicless.
-		unsafe { std::hint::unreachable_unchecked() }
+		unsafe { core::hint::unreachable_unchecked() }
 	}
 
 	// Compute a piecewise linear interpolation that is always

node-graph/gcore-shaders/src/lib.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(feature = "std"), no_std)]
+
 pub mod blending;
 pub mod choice_type;
 pub mod color;

node-graph/gcore-shaders/src/registry.rs

@@ -20,5 +20,6 @@ pub mod types {
 	/// DVec2 with px unit
 	pub type PixelSize = glam::DVec2;
 	/// String with one or more than one line
+	#[cfg(feature = "std")]
 	pub type TextArea = String;
 }