extensions/ext: Add VK_EXT_image_drm_format_modifier

Changelog.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] - ReleaseDate
 
+### Added
+
+- Added `VK_EXT_image_drm_format_modifier` device extension (#603)
+
 ## [0.37.0] - 2022-03-23
 
 ### Changed

ash/src/extensions/ext/image_drm_format_modifier.rs

@@ -0,0 +1,84 @@
+use crate::prelude::*;
+use crate::vk;
+use crate::{Device, Instance};
+use std::ffi::CStr;
+use std::mem;
+
+/// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VK_EXT_image_drm_format_modifier.html>
+#[derive(Clone)]
+pub struct ImageDrmFormatModifier {
+    handle: vk::Device,
+    fp: vk::ExtImageDrmFormatModifierFn,
+}
+
+impl ImageDrmFormatModifier {
+    pub fn new(instance: &Instance, device: &Device) -> Self {
+        let handle = device.handle();
+        let fp = vk::ExtImageDrmFormatModifierFn::load(|name| unsafe {
+            mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
+        });
+        Self { handle, fp }
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetImageDrmFormatModifierPropertiesEXT.html>
+    pub unsafe fn get_image_drm_format_modifier_properties(
+        &self,
+        image: vk::Image,
+        properties: &mut vk::ImageDrmFormatModifierPropertiesEXT,
+    ) -> VkResult<()> {
+        (self.fp.get_image_drm_format_modifier_properties_ext)(self.handle, image, properties)
+            .result()
+    }
+
+    pub unsafe fn get_drm_format_properties_list(
+        instance: &Instance,
+        pdevice: vk::PhysicalDevice,
+        format: vk::Format,
+        format_properties: vk::FormatProperties,
+    ) -> Vec<vk::DrmFormatModifierPropertiesEXT> {
+        let mut list = vk::DrmFormatModifierPropertiesListEXT::default();
+
+        // Get count of DRM format modifiers for the format.
+        {
+            let mut format_properties_2 = vk::FormatProperties2::builder()
+                .format_properties(format_properties)
+                .push_next(&mut list);
+
+            instance.get_physical_device_format_properties2(
+                pdevice,
+                format,
+                &mut format_properties_2,
+            );
+        }
+
+        let mut data = Vec::with_capacity(list.drm_format_modifier_count as usize);
+        list.p_drm_format_modifier_properties = data.as_mut_ptr();
+
+        {
+            let mut format_properties_2 = vk::FormatProperties2::builder()
+                .format_properties(format_properties)
+                .push_next(&mut list);
+
+            instance.get_physical_device_format_properties2(
+                pdevice,
+                format,
+                &mut format_properties_2,
+            );
+        }
+
+        data.set_len(list.drm_format_modifier_count as usize);
+        data
+    }
+
+    pub const fn name() -> &'static CStr {
+        vk::ExtImageDrmFormatModifierFn::name()
+    }
+
+    pub fn fp(&self) -> &vk::ExtImageDrmFormatModifierFn {
+        &self.fp
+    }
+
+    pub fn device(&self) -> vk::Device {
+        self.handle
+    }
+}

ash/src/extensions/ext/mod.rs

@@ -9,6 +9,7 @@ pub use self::extended_dynamic_state::ExtendedDynamicState;
 pub use self::extended_dynamic_state2::ExtendedDynamicState2;
 pub use self::full_screen_exclusive::FullScreenExclusive;
 pub use self::headless_surface::HeadlessSurface;
+pub use self::image_drm_format_modifier::ImageDrmFormatModifier;
 pub use self::metal_surface::MetalSurface;
 pub use self::physical_device_drm::PhysicalDeviceDrm;
 pub use self::private_data::PrivateData;
@@ -25,6 +26,7 @@ mod extended_dynamic_state;
 mod extended_dynamic_state2;
 mod full_screen_exclusive;
 mod headless_surface;
+mod image_drm_format_modifier;
 mod metal_surface;
 mod physical_device_drm;
 mod private_data;