ash runner: use bytemuck

Author: Firestar99

Cargo.lock

@@ -23,6 +23,7 @@ cfg-if = "1.0.0"
 shared = { path = "../../shaders/shared" }
 spirv-builder = { workspace = true, default-features = false }
 anyhow = "1.0.98"
+bytemuck.workspace = true
 
 [target.'cfg(target_os = "macos")'.dependencies]
 ash-molten = { version = "0.20", features = ["pre-built"] }

examples/runners/ash/Cargo.toml

@@ -993,7 +993,7 @@ impl RenderCtx {
                     pipeline.pipeline_layout,
                     ash::vk::ShaderStageFlags::ALL,
                     0,
-                    any_as_u8_slice(&push_constants),
+                    bytemuck::bytes_of(&push_constants),
                 );
 
                 device.cmd_draw(draw_command_buffer, 3, 1, 0, 0);
@@ -1173,12 +1173,6 @@ pub struct Pipeline {
     pub pipeline_layout: vk::PipelineLayout,
 }
 
-unsafe fn any_as_u8_slice<T: Sized>(p: &T) -> &[u8] {
-    unsafe {
-        ::std::slice::from_raw_parts((p as *const T).cast::<u8>(), ::std::mem::size_of::<T>())
-    }
-}
-
 unsafe extern "system" fn vulkan_debug_callback(
     message_severity: vk::DebugUtilsMessageSeverityFlagsEXT,
     _message_type: vk::DebugUtilsMessageTypeFlagsEXT,