capi(d3d12): allow d3d12 to optionally use a resource handle with chain-managed descriptors

MIGRATION-ABI2.md

@@ -66,9 +66,17 @@ The following changes are applicable if `LIBRA_RUNTIME_D3D11` is defined.
 ## `LIBRA_RUNTIME_D3D12` changes
 The following changes are applicable if `LIBRA_RUNTIME_D3D12` is defined.
 
+* The lifetime of resources will not be extended past the call to the `libra_d3d12_filter_chain_frame` function. In other words, the refcount for any resources passed into the function
+  will no longer be changed, and it is explicitly the responsibility of the caller to ensure any resources remain alive until the `ID3D12GraphicsCommandList` provided is submitted.
 * The fields `format`, `width`, and `height` have been removed from `libra_source_image_d3d12_t`.
 * The fields `width` and `height` have been added to `libra_output_image_d3d12_t`. 
   * You should now pass what was previously `.width` and `.height` of `libra_viewport_t` to these new fields in `libra_output_image_d3d12_t`.
+* The `image` parameter of `libra_d3d12_filter_chain_frame` has changed from `libra_source_image_d3d12_t` to `libra_image_d3d12_t`.
+  * To maintain the previous behaviour, `.image_type` of the `libra_image_d3d12_t` should be set to `IMAGE_TYPE_SOURCE_IMAGE`, and `.handle.source` should be the `libra_source_image_d3d12_t`struct.
+* The `out` parameter of `libra_d3d12_filter_chain_frame` has changed from `libra_output_image_d3d11_t` to `libra_image_d3d12_t`.
+  * To maintain the previous behaviour, `.image_type` of the `libra_image_d3d12_t` should be set to `IMAGE_TYPE_OUTPUT_IMAGE`, and `.handle.output` should be the `libra_output_image_d3d12_t`struct.
+* Any `libra_image_d3d12_t` can now optionally pass only the `ID3D12Resource *` for the texture by setting `.image_type` to `IMAGE_TYPE_RESOURCE` and setting `.handle.resource` to the resource pointer.
+  *  If using `IMAGE_TYPE_RESOURCE`, shader resource view and render target view descriptors for the input and output images will be internally allocated by the filter chain. This may result in marginally worse performance.
 * In `libra_d3d12_filter_chain_frame`, the position of the `viewport` parameter has moved to after the `out` parameter, and its type has changed from `libra_viewport_t` to `libra_viewport_t *`, which is allowed to be `NULL`.
   See [`libra_viewport_t` changes](#libra_viewport_t-changes) for more details.
 * The `chain` parameter of `libra_d3d12_filter_chain_get_param` has been made `const`.

include/librashader.h

@@ -51,19 +51,45 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #endif
 
 
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+/// The type of image passed to the image.
+typedef enum LIBRA_D3D12_IMAGE_TYPE {
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+  /// The image handle is a pointer to a `ID3D12Resource`.
+  LIBRA_D3D12_IMAGE_TYPE_IMAGE_TYPE_RESOURCE = 0,
+#endif
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+  /// The image handle is a `libra_source_image_d3d12_t`
+  LIBRA_D3D12_IMAGE_TYPE_IMAGE_TYPE_SOURCE_IMAGE = 1,
+#endif
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+  /// The image handle is a `libra_output_image_d3d12_t`
+  LIBRA_D3D12_IMAGE_TYPE_IMAGE_TYPE_OUTPUT_IMAGE = 2,
+#endif
+} LIBRA_D3D12_IMAGE_TYPE;
+#endif
+
 /// Error codes for librashader error types.
 enum LIBRA_ERRNO
 #ifdef __cplusplus
   : int32_t
 #endif // __cplusplus
  {
+  /// Error code for an unknown error.
   LIBRA_ERRNO_UNKNOWN_ERROR = 0,
+  /// Error code for an invalid parameter.
   LIBRA_ERRNO_INVALID_PARAMETER = 1,
+  /// Error code for an invalid (non-UTF8) string.
   LIBRA_ERRNO_INVALID_STRING = 2,
+  /// Error code for a preset parser error.
   LIBRA_ERRNO_PRESET_ERROR = 3,
+  /// Error code for a preprocessor error.
   LIBRA_ERRNO_PREPROCESS_ERROR = 4,
+  /// Error code for a shader parameter error.
   LIBRA_ERRNO_SHADER_PARAMETER_ERROR = 5,
+  /// Error code for a reflection error.
   LIBRA_ERRNO_REFLECT_ERROR = 6,
+  /// Error code for a runtime error.
   LIBRA_ERRNO_RUNTIME_ERROR = 7,
 };
 #ifndef __cplusplus
@@ -76,23 +102,32 @@ enum LIBRA_PRESET_CTX_ORIENTATION
   : uint32_t
 #endif // __cplusplus
  {
+  /// Context parameter for vertical orientation.
   LIBRA_PRESET_CTX_ORIENTATION_VERTICAL = 0,
+  /// Context parameter for horizontal orientation.
   LIBRA_PRESET_CTX_ORIENTATION_HORIZONTAL,
 };
 #ifndef __cplusplus
 typedef uint32_t LIBRA_PRESET_CTX_ORIENTATION;
 #endif // __cplusplus
 
+/// An enum representing graphics runtimes (video drivers) for use in preset contexts.
 enum LIBRA_PRESET_CTX_RUNTIME
 #ifdef __cplusplus
   : uint32_t
 #endif // __cplusplus
  {
+  /// No runtime.
   LIBRA_PRESET_CTX_RUNTIME_NONE = 0,
+  /// OpenGL 3.3+
   LIBRA_PRESET_CTX_RUNTIME_GL_CORE,
+  /// Vulkan
   LIBRA_PRESET_CTX_RUNTIME_VULKAN,
+  /// Direct3D 11
   LIBRA_PRESET_CTX_RUNTIME_D3D11,
+  /// Direct3D 12
   LIBRA_PRESET_CTX_RUNTIME_D3D12,
+  /// Metal
   LIBRA_PRESET_CTX_RUNTIME_METAL,
 };
 #ifndef __cplusplus
@@ -418,10 +453,10 @@ typedef struct _filter_chain_d3d12 *libra_d3d12_filter_chain_t;
 #if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
 /// Direct3D 12 parameters for the source image.
 typedef struct libra_source_image_d3d12_t {
-  /// The resource containing the image.
-  ID3D12Resource * resource;
   /// A CPU descriptor handle to a shader resource view of the image.
   D3D12_CPU_DESCRIPTOR_HANDLE descriptor;
+  /// The resource containing the image.
+  ID3D12Resource * resource;
 } libra_source_image_d3d12_t;
 #endif
 
@@ -439,6 +474,31 @@ typedef struct libra_output_image_d3d12_t {
 } libra_output_image_d3d12_t;
 #endif
 
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+/// A handle to a Direct3D 12 image.
+///
+/// This must be either a pointer to a `ID3D12Resource`,
+/// or a valid source or output image type.
+typedef union libra_image_d3d12_handle_t {
+  /// A pointer to an `ID3D12Resource`, with descriptors managed by the filter chain.
+  ID3D12Resource * resource;
+  /// A source image with externally managed descriptors.
+  struct libra_source_image_d3d12_t source;
+  /// An output image with externally managed descriptors.
+  struct libra_output_image_d3d12_t output;
+} libra_image_d3d12_handle_t;
+#endif
+
+#if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
+/// Tagged union for a Direct3D 12 image
+typedef struct libra_image_d3d12_t {
+  /// The type of the image.
+  enum LIBRA_D3D12_IMAGE_TYPE image_type;
+  /// The handle to the image.
+  union libra_image_d3d12_handle_t image;
+} libra_image_d3d12_t;
+#endif
+
 #if (defined(_WIN32) && defined(LIBRA_RUNTIME_D3D12))
 /// Options for each Direct3D 12 shader frame.
 typedef struct frame_d3d12_opt_t {
@@ -469,6 +529,7 @@ typedef struct filter_chain_mtl_opt_t {
 #endif
 
 #if (defined(__APPLE__) && defined(LIBRA_RUNTIME_METAL) && defined(__OBJC__))
+/// A handle to a Vulkan filter chain.
 typedef struct _filter_chain_mtl *libra_mtl_filter_chain_t;
 #endif
 
@@ -491,6 +552,7 @@ typedef struct frame_mtl_opt_t {
 } frame_mtl_opt_t;
 #endif
 
+/// ABI version type alias.
 typedef size_t LIBRASHADER_ABI_VERSION;
 
 /// Function pointer definition for libra_abi_version
@@ -887,8 +949,8 @@ typedef libra_error_t (*PFN_libra_d3d12_filter_chain_create_deferred)(libra_shad
 typedef libra_error_t (*PFN_libra_d3d12_filter_chain_frame)(libra_d3d12_filter_chain_t *chain,
                                                             ID3D12GraphicsCommandList * command_list,
                                                             size_t frame_count,
-                                                            struct libra_source_image_d3d12_t image,
+                                                            struct libra_image_d3d12_t image,
-                                                            struct libra_output_image_d3d12_t out,
+                                                            struct libra_image_d3d12_t out,
                                                             const struct libra_viewport_t *viewport,
                                                             const float *mvp,
                                                             const struct frame_d3d12_opt_t *options);
@@ -1761,8 +1823,8 @@ libra_error_t libra_d3d12_filter_chain_create_deferred(libra_shader_preset_t *pr
 libra_error_t libra_d3d12_filter_chain_frame(libra_d3d12_filter_chain_t *chain,
                                              ID3D12GraphicsCommandList * command_list,
                                              size_t frame_count,
-                                             struct libra_source_image_d3d12_t image,
+                                             struct libra_image_d3d12_t image,
-                                             struct libra_output_image_d3d12_t out,
+                                             struct libra_image_d3d12_t out,
                                              const struct libra_viewport_t *viewport,
                                              const float *mvp,
                                              const struct frame_d3d12_opt_t *options);
@@ -2025,6 +2087,7 @@ libra_error_t libra_preset_ctx_set_param(libra_preset_ctx_t *context,
 /// - GLCore
 /// - Direct3D11
 /// - Direct3D12
+/// - Metal
 ///
 /// This will also set the appropriate video driver extensions.
 ///

include/librashader_ld.h

@@ -358,7 +358,7 @@ libra_error_t __librashader__noop_d3d12_filter_chain_create_deferred(
 
 libra_error_t __librashader__noop_d3d12_filter_chain_frame(
     libra_d3d12_filter_chain_t *chain, ID3D12GraphicsCommandList *command_list,
-    size_t frame_count, struct libra_source_image_d3d12_t image, struct libra_output_image_d3d12_t out,
+    size_t frame_count, struct libra_image_d3d12_t image, struct libra_image_d3d12_t out,
     const struct libra_viewport_t *viewport, const float *mvp,
     const struct frame_d3d12_opt_t *opt) {
     return NULL;

librashader-capi/src/runtime/d3d12/filter_chain.rs

@@ -8,7 +8,6 @@ use std::ffi::CStr;
 use std::mem::{ManuallyDrop, MaybeUninit};
 use std::ptr::NonNull;
 use std::slice;
-use windows::core::Interface;
 use windows::Win32::Graphics::Direct3D12::{
     ID3D12Device, ID3D12GraphicsCommandList, ID3D12Resource, D3D12_CPU_DESCRIPTOR_HANDLE,
 };
@@ -20,6 +19,40 @@ use librashader::runtime::d3d12::{
 };
 use librashader::runtime::{FilterChainParameters, Size, Viewport};
 
+/// Tagged union for a Direct3D 12 image
+#[repr(C)]
+pub struct libra_image_d3d12_t {
+    /// The type of the image.
+    pub image_type: LIBRA_D3D12_IMAGE_TYPE,
+    /// The handle to the image.
+    pub handle: libra_image_d3d12_handle_t,
+}
+
+/// A handle to a Direct3D 12 image.
+///
+/// This must be either a pointer to a `ID3D12Resource`,
+/// or a valid source or output image type.
+#[repr(C)]
+pub union libra_image_d3d12_handle_t {
+    /// A pointer to an `ID3D12Resource`, with descriptors managed by the filter chain.
+    pub resource: ManuallyDrop<ID3D12Resource>,
+    /// A source image with externally managed descriptors.
+    pub source: ManuallyDrop<libra_source_image_d3d12_t>,
+    /// An output image with externally managed descriptors.
+    pub output: ManuallyDrop<libra_output_image_d3d12_t>,
+}
+
+/// The type of image passed to the image.
+#[repr(C)]
+pub enum LIBRA_D3D12_IMAGE_TYPE {
+    /// The image handle is a pointer to a `ID3D12Resource`.
+    IMAGE_TYPE_RESOURCE = 0,
+    /// The image handle is a `libra_source_image_d3d12_t`
+    IMAGE_TYPE_SOURCE_IMAGE = 1,
+    /// The image handle is a `libra_output_image_d3d12_t`
+    IMAGE_TYPE_OUTPUT_IMAGE = 2,
+}
+
 /// Direct3D 12 parameters for the source image.
 #[repr(C)]
 pub struct libra_source_image_d3d12_t {
@@ -200,18 +233,26 @@ extern_fn! {
     /// remain in `D3D12_RESOURCE_STATE_RENDER_TARGET` after all shader passes. The caller must transition
     /// the output image to the final resource state.
     ///
+    /// The refcount of any COM pointers passed into this frame will not be changed. It is the responsibility
+    /// of the caller to ensure any resources remain alive until the `ID3D12GraphicsCommandList` provided is
+    /// submitted.
+    ///
     /// ## Parameters
     ///
     /// - `chain` is a handle to the filter chain.
     /// - `command_list` is a `ID3D12GraphicsCommandList` to record draw commands to.
     ///    The provided command list must be open and associated with the `ID3D12Device` this filter chain was created with.
     /// - `frame_count` is the number of frames passed to the shader
-    /// - `image` is a `libra_source_image_d3d12_t`, containing a `ID3D12Resource` pointer and CPU descriptor
+    /// - `image` is a `libra_image_d3d12_t` with `image_type` set to `IMAGE_TYPE_SOURCE_IMAGE` or `IMAGE_TYPE_RESOURCE`,
-    ///    to an image that will serve as the source image for the frame. The input image must be in the
+    ///    with `image_handle` either a `ID3D12Resource*` or an `libra_source_image_d3d12_t` containing a CPU descriptor to a shader resource view,
-    ///    `D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE` resource state or equivalent barrier layout.
+    ///    and the image resource the view is of, which will serve as the source image for the frame.
-    /// - `out` is a `libra_output_image_d3d12_t`, containing a CPU descriptor handle, format, and size information
+    ///    The input image resource must be in the `D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE` resource state
-    ///    for the render target of the frame. The output image must be in
+    ///    or equivalent barrier layout. The image resource must have dimension `D3D12_RESOURCE_DIMENSION_TEXTURE2D`.
+    /// - `out` is a `libra_image_d3d12_t`, with `image_type` set to `IMAGE_TYPE_OUTPUT_IMAGE` or `IMAGE_TYPE_RESOURCE`,
+    ///    with `image_handle` being either a `ID3D12Resource*` or an `libra_output_image_d3d12_t`, containing a CPU descriptor handle,
+    ///    format, and size information for the render target of the frame. The output image must be in
     ///    `D3D12_RESOURCE_STATE_RENDER_TARGET` resource state or equivalent barrier layout.
+    ///    The image resource must have dimension `D3D12_RESOURCE_DIMENSION_TEXTURE2D`.
     ///
     /// - `viewport` is a pointer to a `libra_viewport_t` that specifies the area onto which scissor and viewport
     ///    will be applied to the render target. It may be null, in which case a default viewport spanning the
@@ -228,18 +269,23 @@ extern_fn! {
     ///    values for the model view projection matrix.
     /// - `opt` may be null, or if it is not null, must be an aligned pointer to a valid `frame_d3d12_opt_t`
     ///    struct.
-    /// - `out` must be a descriptor handle to a render target view.
+    /// -  Any resource pointers contained within a `libra_image_d3d12_t` must be non-null.
-    /// - `image.resource` must not be null.
+    /// -  The `handle` field of any `libra_image_d3d12_t` must be valid for it's `image_type`.
+    ///      - If `image_type` is `IMAGE_TYPE_RESOURCE`, then `handle` must be `ID3D12Resource *`.
+    ///      - If `image_type` is `IMAGE_TYPE_SOURCE`, then `handle` must be `libra_source_image_d3d12_t`.
+    ///      - If `image_type` is `IMAGE_TYPE_OUTPUT`, then `handle` must be `libra_output_image_d3d12_t`.
     /// - `command_list` must be a non-null pointer to a `ID3D12GraphicsCommandList` that is open,
     ///    and must be associated with the `ID3D12Device` this filter chain was created with.
+    /// - All resource pointers contained within a `libra_image_d3d12_t` must remain valid until the `ID3D12GraphicsCommandList *`
+    ///   provided is submitted after the call to this function.
     /// - You must ensure that only one thread has access to `chain` before you call this function. Only one
     ///   thread at a time may call this function.
     nopanic fn libra_d3d12_filter_chain_frame(
         chain: *mut libra_d3d12_filter_chain_t,
         command_list: ManuallyDrop<ID3D12GraphicsCommandList>,
         frame_count: usize,
-        image: libra_source_image_d3d12_t,
+        image: libra_image_d3d12_t,
-        out: libra_output_image_d3d12_t,
+        out: libra_image_d3d12_t,
         viewport: *const libra_viewport_t,
         mvp: *const f32,
         options: *const MaybeUninit<frame_d3d12_opt_t>
@@ -261,10 +307,26 @@ extern_fn! {
         let options = options.map(FromUninit::from_uninit);
 
         let output = unsafe {
-            D3D12OutputView::new_from_raw(
+            match out.image_type {
-                out.descriptor,
+                LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_RESOURCE => {
-                Size::new(out.width, out.height),
+                    let out = out.handle.resource;
-                out.format)
+                    D3D12OutputView::new_from_resource(
+                        out,
+                        chain,
+                    )?
+                }
+                LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_OUTPUT_IMAGE => {
+                    let out = out.handle.output;
+                    D3D12OutputView::new_from_raw(
+                        out.descriptor,
+                        Size::new(out.width, out.height),
+                        out.format,
+                    )
+                }
+                LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_SOURCE_IMAGE => {
+                    return Err(LibrashaderError::InvalidParameter("out"))
+                }
+            }
         };
 
         let viewport = if viewport.is_null() {
@@ -283,10 +345,25 @@ extern_fn! {
             }
         };
 
-        let image = D3D12InputImage::External {
+        let image = unsafe {
-            resource: image.resource.to_ref(),
+            match image.image_type {
-            descriptor: image.descriptor,
+                LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_RESOURCE => {
+                    let image = image.handle.resource;
+                    D3D12InputImage::Managed(image)
+                }
+                 LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_SOURCE_IMAGE => {
+                    let image = ManuallyDrop::into_inner(image.handle.source);
+                    D3D12InputImage::External {
+                        resource: image.resource,
+                        descriptor: image.descriptor,
+                    }
+                }
+                LIBRA_D3D12_IMAGE_TYPE::IMAGE_TYPE_OUTPUT_IMAGE => {
+                    return Err(LibrashaderError::InvalidParameter("image"))
+                }
+            }
         };
+
         unsafe {
             chain.frame(&command_list, image, &viewport, frame_count, options.as_ref())?;
         }

librashader-cli/src/render/d3d12/mod.rs

@@ -7,9 +7,7 @@ use anyhow::anyhow;
 use d3d12_descriptor_heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot};
 use image::RgbaImage;
 use librashader::presets::ShaderPreset;
-use librashader::runtime::d3d12::{
+use librashader::runtime::d3d12::{D3D12OutputView, FilterChain, FilterChainOptions, FrameOptions};
-    D3D12InputImage, D3D12OutputView, FilterChain, FilterChainOptions, FrameOptions,
-};
 use librashader::runtime::Viewport;
 use librashader::runtime::{FilterChainParameters, RuntimeParameters};
 use librashader_runtime::image::{Image, PixelFormat, UVDirection, BGRA8};
@@ -151,14 +149,10 @@ impl RenderTest for Direct3D12 {
                 current_subframe: options.current_subframe,
             });
 
+            let image = self.texture.to_ref();
+
             for frame in 0..=frame_count {
-                filter_chain.frame(
+                filter_chain.frame(&cmd, image.into(), &viewport, frame, options.as_ref())?;
-                    &cmd,
-                    D3D12InputImage::Managed(self.texture.to_ref()),
-                    &viewport,
-                    frame,
-                    options.as_ref(),
-                )?;
             }
 
             cmd.Close()?;

librashader-runtime-d3d12/src/texture.rs

@@ -17,24 +17,26 @@ use windows::Win32::Graphics::Direct3D12::{
 };
 use windows::Win32::Graphics::Dxgi::Common::DXGI_FORMAT;
 
-/// A **non-owning** reference to a ID3D12Resource.
-/// This does not `AddRef` or `Release` the underlying interface.
-pub type D3D12ResourceRef<'a> = InterfaceRef<'a, ID3D12Resource>;
-
 /// An image for use as shader resource view.
 #[derive(Clone)]
-pub enum D3D12InputImage<'a> {
+pub enum D3D12InputImage {
     /// The filter chain manages the CPU descriptor to the shader resource view.
-    Managed(InterfaceRef<'a, ID3D12Resource>),
+    Managed(ManuallyDrop<ID3D12Resource>),
     /// The CPU descriptor to the shader resource view is managed externally.
     External {
         /// The ID3D12Resource that holds the image data.
-        resource: InterfaceRef<'a, ID3D12Resource>,
+        resource: ManuallyDrop<ID3D12Resource>,
         /// The CPU descriptor to the shader resource view.
         descriptor: D3D12_CPU_DESCRIPTOR_HANDLE,
     },
 }
 
+impl<'a> From<InterfaceRef<'a, ID3D12Resource>> for D3D12InputImage {
+    fn from(value: InterfaceRef<'a, ID3D12Resource>) -> Self {
+        Self::Managed(unsafe { std::mem::transmute(value) })
+    }
+}
+
 #[derive(Clone)]
 pub(crate) enum InputDescriptor {
     Owned(D3D12DescriptorHeapSlot<CpuStagingHeap>),
@@ -112,15 +114,21 @@ impl D3D12OutputView {
     ///
     /// SAFETY: the image must be valid until the command list is submitted.
     pub unsafe fn new_from_resource(
-        image: D3D12ResourceRef,
+        image: ManuallyDrop<ID3D12Resource>,
         chain: &mut FilterChainD3D12,
     ) -> error::Result<D3D12OutputView> {
-        unsafe { Self::new_from_resource_internal(image, &chain.common.d3d12, &mut chain.rtv_heap) }
+        unsafe {
+            Self::new_from_resource_internal(
+                std::mem::transmute(image),
+                &chain.common.d3d12,
+                &mut chain.rtv_heap,
+            )
+        }
     }
 
     /// Create a new output view from a resource ref
     pub(crate) unsafe fn new_from_resource_internal(
-        image: D3D12ResourceRef,
+        image: InterfaceRef<ID3D12Resource>,
         device: &ID3D12Device,
         heap: &mut D3D12DescriptorHeap<RenderTargetHeap>,
     ) -> error::Result<D3D12OutputView> {
@@ -192,8 +200,8 @@ impl InputTexture {
     }
 
     // unsafe since the lifetime of the handle has to survive
-    pub unsafe fn new_from_resource<'a>(
+    pub unsafe fn new_from_resource(
-        image: InterfaceRef<'a, ID3D12Resource>,
+        image: ManuallyDrop<ID3D12Resource>,
         filter: FilterMode,
         wrap_mode: WrapMode,
         device: &ID3D12Device,
@@ -225,7 +233,7 @@ impl InputTexture {
         }?;
 
         Ok(InputTexture {
-            resource: unsafe { std::mem::transmute(image) },
+            resource: image,
             descriptor,
             size: Size::new(desc.Width as u32, desc.Height),
             format: desc.Format,
@@ -236,7 +244,7 @@ impl InputTexture {
 
     // unsafe since the lifetime of the handle has to survive
     pub unsafe fn new_from_raw(
-        image: InterfaceRef<ID3D12Resource>,
+        image: ManuallyDrop<ID3D12Resource>,
         descriptor: D3D12_CPU_DESCRIPTOR_HANDLE,
         filter: FilterMode,
         wrap_mode: WrapMode,