wip 2

crates/shaders-shared/Cargo.toml

@@ -4,4 +4,5 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-glam.workspace = true
+spirv-std.workspace = true
+bytemuck.workspace = true

crates/shaders-shared/src/lib.rs

@@ -1,6 +1,6 @@
 #![cfg_attr(target_arch = "spirv", no_std)]
 
-use glam::{Mat4, Vec3};
+use spirv_std::glam::{Mat4, Vec3, Vec4};
 
 #[repr(C)]
 #[derive(Clone)]
@@ -10,3 +10,12 @@ pub struct UniformBufferObject {
     pub proj: Mat4,
     pub model_color: Vec3,
 }
+
+#[repr(C)]
+#[derive(Debug, Clone, Copy)]
+pub struct PushConstants {
+    pub texture_size: Vec4,
+}
+
+unsafe impl bytemuck::Pod for PushConstants {}
+unsafe impl bytemuck::Zeroable for PushConstants {}