extensions/ext: Add VK_EXT_vertex_input_dynamic_state (#784)

Changelog.md

@@ -22,6 +22,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `VK_KHR_maintenance5` device extension (#780)
 - Added `VK_NV_device_generated_commands_compute` device extension (#781)
 - Added `VK_KHR_cooperative_matrix` instance extension (#782)
+- Added `VK_EXT_vertex_input_dynamic_state` device extension (#784)
 
 ### Changed
 

ash/src/extensions/ext/mod.rs

@@ -22,6 +22,7 @@ pub use self::private_data::PrivateData;
 pub use self::sample_locations::SampleLocations;
 pub use self::shader_object::ShaderObject;
 pub use self::tooling_info::ToolingInfo;
+pub use self::vertex_input_dynamic_state::VertexInputDynamicState;
 
 mod acquire_drm_display;
 mod buffer_device_address;
@@ -47,3 +48,4 @@ mod private_data;
 mod sample_locations;
 mod shader_object;
 mod tooling_info;
+mod vertex_input_dynamic_state;

ash/src/extensions/ext/vertex_input_dynamic_state.rs

@@ -0,0 +1,43 @@
+use crate::vk;
+use crate::{Device, Instance};
+use std::ffi::CStr;
+use std::mem;
+
+/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_EXT_vertex_input_dynamic_state.html>
+#[derive(Clone)]
+pub struct VertexInputDynamicState {
+    fp: vk::ExtVertexInputDynamicStateFn,
+}
+
+impl VertexInputDynamicState {
+    pub fn new(instance: &Instance, device: &Device) -> Self {
+        let fp = vk::ExtVertexInputDynamicStateFn::load(|name| unsafe {
+            mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
+        });
+        Self { fp }
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetVertexInputEXT.html>
+    #[inline]
+    pub unsafe fn cmd_set_vertex_input(
+        &self,
+        command_buffer: vk::CommandBuffer,
+        vertex_binding_descriptions: &[vk::VertexInputBindingDescription2EXT],
+        vertex_attribute_descriptions: &[vk::VertexInputAttributeDescription2EXT],
+    ) {
+        (self.fp.cmd_set_vertex_input_ext)(
+            command_buffer,
+            vertex_binding_descriptions.len() as u32,
+            vertex_binding_descriptions.as_ptr(),
+            vertex_attribute_descriptions.len() as u32,
+            vertex_attribute_descriptions.as_ptr(),
+        )
+    }
+
+    pub const NAME: &'static CStr = vk::ExtVertexInputDynamicStateFn::NAME;
+
+    #[inline]
+    pub fn fp(&self) -> &vk::ExtVertexInputDynamicStateFn {
+        &self.fp
+    }
+}