extensions/ext: Add VK_EXT_descriptor_buffer (#679)

Changelog.md

@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `VK_EXT_mesh_shader` device extension (#657)
 - Added `VK_EXT_acquire_drm_display` instance extension (#668)
 - Added `VK_EXT_extended_dynamic_state3` device extension (#671)
+- Added `VK_EXT_descriptor_buffer` instance extension (#679)
 
 
 ### Fixed

ash/src/extensions/ext/descriptor_buffer.rs

@@ -0,0 +1,211 @@
+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_descriptor_buffer.html>
+#[derive(Clone)]
+pub struct DescriptorBuffer {
+    handle: vk::Device,
+    fp: vk::ExtDescriptorBufferFn,
+}
+
+impl DescriptorBuffer {
+    pub fn new(instance: &Instance, device: &Device) -> Self {
+        let handle = device.handle();
+        let fp = vk::ExtDescriptorBufferFn::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/vkGetDescriptorSetLayoutSizeEXT.html>
+    #[inline]
+    pub unsafe fn get_descriptor_set_layout_size(
+        &self,
+        layout: vk::DescriptorSetLayout,
+    ) -> vk::DeviceSize {
+        let mut count = 0;
+        (self.fp.get_descriptor_set_layout_size_ext)(self.handle, layout, &mut count);
+        count
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetDescriptorSetLayoutBindingOffsetEXT.html>
+    #[inline]
+    pub unsafe fn get_descriptor_set_layout_binding_offset(
+        &self,
+        layout: vk::DescriptorSetLayout,
+        binding: u32,
+    ) -> vk::DeviceSize {
+        let mut offset = 0;
+        (self.fp.get_descriptor_set_layout_binding_offset_ext)(
+            self.handle,
+            layout,
+            binding,
+            &mut offset,
+        );
+        offset
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetDescriptorEXT.html>
+    #[inline]
+    pub unsafe fn get_descriptor(
+        &self,
+        descriptor_info: &vk::DescriptorGetInfoEXT,
+        descriptor: &mut [u8],
+    ) {
+        (self.fp.get_descriptor_ext)(
+            self.handle,
+            descriptor_info,
+            descriptor.len(),
+            descriptor.as_mut_ptr().cast(),
+        )
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdBindDescriptorBuffersEXT.html>
+    #[inline]
+    pub unsafe fn cmd_bind_descriptor_buffers(
+        &self,
+        command_buffer: vk::CommandBuffer,
+        binding_info: &[vk::DescriptorBufferBindingInfoEXT],
+    ) {
+        (self.fp.cmd_bind_descriptor_buffers_ext)(
+            command_buffer,
+            binding_info.len() as u32,
+            binding_info.as_ptr(),
+        )
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetDescriptorBufferOffsetsEXT.html>
+    #[inline]
+    pub unsafe fn cmd_set_descriptor_buffer_offsets(
+        &self,
+        command_buffer: vk::CommandBuffer,
+        pipeline_bind_point: vk::PipelineBindPoint,
+        layout: vk::PipelineLayout,
+        first_set: u32,
+        buffer_indices: &[u32],
+        offsets: &[vk::DeviceSize],
+    ) {
+        assert_eq!(buffer_indices.len(), offsets.len());
+        (self.fp.cmd_set_descriptor_buffer_offsets_ext)(
+            command_buffer,
+            pipeline_bind_point,
+            layout,
+            first_set,
+            buffer_indices.len() as u32,
+            buffer_indices.as_ptr(),
+            offsets.as_ptr(),
+        )
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdBindDescriptorBufferEmbeddedSamplersEXT.html>
+    #[inline]
+    pub unsafe fn cmd_bind_descriptor_buffer_embedded_samplers(
+        &self,
+        command_buffer: vk::CommandBuffer,
+        pipeline_bind_point: vk::PipelineBindPoint,
+        layout: vk::PipelineLayout,
+        set: u32,
+    ) {
+        (self.fp.cmd_bind_descriptor_buffer_embedded_samplers_ext)(
+            command_buffer,
+            pipeline_bind_point,
+            layout,
+            set,
+        )
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetBufferOpaqueCaptureDescriptorDataEXT.html>
+    #[inline]
+    pub unsafe fn get_buffer_opaque_capture_descriptor_data(
+        &self,
+        info: &vk::BufferCaptureDescriptorDataInfoEXT,
+        data: &mut [u8],
+    ) -> VkResult<()> {
+        (self.fp.get_buffer_opaque_capture_descriptor_data_ext)(
+            self.handle,
+            info,
+            data.as_mut_ptr().cast(),
+        )
+        .result()
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetImageOpaqueCaptureDescriptorDataEXT.html>
+    #[inline]
+    pub unsafe fn get_image_opaque_capture_descriptor_data(
+        &self,
+        info: &vk::ImageCaptureDescriptorDataInfoEXT,
+        data: &mut [u8],
+    ) -> VkResult<()> {
+        (self.fp.get_image_opaque_capture_descriptor_data_ext)(
+            self.handle,
+            info,
+            data.as_mut_ptr().cast(),
+        )
+        .result()
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetImageViewOpaqueCaptureDescriptorDataEXT.html>
+    #[inline]
+    pub unsafe fn get_image_view_opaque_capture_descriptor_data(
+        &self,
+        info: &vk::ImageViewCaptureDescriptorDataInfoEXT,
+        data: &mut [u8],
+    ) -> VkResult<()> {
+        (self.fp.get_image_view_opaque_capture_descriptor_data_ext)(
+            self.handle,
+            info,
+            data.as_mut_ptr().cast(),
+        )
+        .result()
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetSamplerOpaqueCaptureDescriptorDataEXT.html>
+    #[inline]
+    pub unsafe fn get_sampler_opaque_capture_descriptor_data(
+        &self,
+        info: &vk::SamplerCaptureDescriptorDataInfoEXT,
+        data: &mut [u8],
+    ) -> VkResult<()> {
+        (self.fp.get_sampler_opaque_capture_descriptor_data_ext)(
+            self.handle,
+            info,
+            data.as_mut_ptr().cast(),
+        )
+        .result()
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkGetAccelerationStructureOpaqueCaptureDescriptorDataEXT.html>
+    #[inline]
+    pub unsafe fn get_acceleration_structure_opaque_capture_descriptor_data(
+        &self,
+        info: &vk::AccelerationStructureCaptureDescriptorDataInfoEXT,
+        data: &mut [u8],
+    ) -> VkResult<()> {
+        (self
+            .fp
+            .get_acceleration_structure_opaque_capture_descriptor_data_ext)(
+            self.handle,
+            info,
+            data.as_mut_ptr().cast(),
+        )
+        .result()
+    }
+
+    #[inline]
+    pub const fn name() -> &'static CStr {
+        vk::ExtDescriptorBufferFn::name()
+    }
+
+    #[inline]
+    pub fn fp(&self) -> &vk::ExtDescriptorBufferFn {
+        &self.fp
+    }
+
+    #[inline]
+    pub fn device(&self) -> vk::Device {
+        self.handle
+    }
+}

ash/src/extensions/ext/mod.rs

@@ -6,6 +6,7 @@ pub use self::debug_marker::DebugMarker;
 #[allow(deprecated)]
 pub use self::debug_report::DebugReport;
 pub use self::debug_utils::DebugUtils;
+pub use self::descriptor_buffer::DescriptorBuffer;
 pub use self::extended_dynamic_state::ExtendedDynamicState;
 pub use self::extended_dynamic_state2::ExtendedDynamicState2;
 pub use self::extended_dynamic_state3::ExtendedDynamicState3;
@@ -28,6 +29,7 @@ mod debug_marker;
 #[deprecated(note = "Please use the [DebugUtils](struct.DebugUtils.html) extension instead.")]
 mod debug_report;
 mod debug_utils;
+mod descriptor_buffer;
 mod extended_dynamic_state;
 mod extended_dynamic_state2;
 mod extended_dynamic_state3;