diff --git a/librashader-runtime-d3d12/src/heap.rs b/librashader-runtime-d3d12/src/descriptor_heap.rs
similarity index 91%
rename from librashader-runtime-d3d12/src/heap.rs
rename to librashader-runtime-d3d12/src/descriptor_heap.rs
index 612d3f9..8b26a1d 100644
--- a/librashader-runtime-d3d12/src/heap.rs
+++ b/librashader-runtime-d3d12/src/descriptor_heap.rs
@@ -2,6 +2,7 @@ use crate::error;
 use std::cell::RefCell;
 use std::marker::PhantomData;
 use std::ops::Deref;
+use std::rc::Rc;
 use std::sync::Arc;
 use windows::Win32::Graphics::Direct3D12::{ID3D12DescriptorHeap, ID3D12Device, D3D12_CPU_DESCRIPTOR_HANDLE, D3D12_DESCRIPTOR_HEAP_DESC, D3D12_DESCRIPTOR_HEAP_FLAG_NONE, D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE, D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, D3D12_GPU_DESCRIPTOR_HANDLE, D3D12_DESCRIPTOR_HEAP_TYPE, D3D12_DESCRIPTOR_HEAP_TYPE_RTV};
 
@@ -88,22 +89,24 @@ impl const D3D12HeapType for SamplerWorkHeap {
     }
 }
 
-pub struct D3D12DescriptorHeapSlot<T> {
+pub type D3D12DescriptorHeapSlot<T> = Rc<D3D12DescriptorHeapSlotInner<T>>;
+
+pub struct D3D12DescriptorHeapSlotInner<T> {
     cpu_handle: D3D12_CPU_DESCRIPTOR_HANDLE,
     gpu_handle: Option<D3D12_GPU_DESCRIPTOR_HANDLE>,
-    heap: Arc<RefCell<D3D12DescriptorHeapInner>>,
+    heap: Rc<RefCell<D3D12DescriptorHeapInner>>,
     slot: usize,
     _pd: PhantomData<T>,
 }
 
-impl<T> D3D12DescriptorHeapSlot<T> {
+impl<T> D3D12DescriptorHeapSlotInner<T> {
     /// Get the index of the resource within the heap.
     pub fn index(&self) -> usize {
         self.slot
     }
 
     /// unsafe because type must match
-    pub unsafe fn copy_descriptor(&mut self, source: D3D12_CPU_DESCRIPTOR_HANDLE) {
+    pub unsafe fn copy_descriptor(&self, source: D3D12_CPU_DESCRIPTOR_HANDLE) {
         unsafe {
             let heap =  self.heap.deref()
                 .borrow();
@@ -118,14 +121,14 @@ impl<T> D3D12DescriptorHeapSlot<T> {
     }
 }
 
-impl<T> AsRef<D3D12_CPU_DESCRIPTOR_HANDLE> for D3D12DescriptorHeapSlot<T> {
+impl<T> AsRef<D3D12_CPU_DESCRIPTOR_HANDLE> for D3D12DescriptorHeapSlotInner<T> {
     fn as_ref(&self) -> &D3D12_CPU_DESCRIPTOR_HANDLE {
         &self.cpu_handle
     }
 }
 
 impl<T: D3D12ShaderVisibleHeapType> AsRef<D3D12_GPU_DESCRIPTOR_HANDLE>
-    for D3D12DescriptorHeapSlot<T>
+    for D3D12DescriptorHeapSlotInner<T>
 {
     fn as_ref(&self) -> &D3D12_GPU_DESCRIPTOR_HANDLE {
         self.gpu_handle.as_ref().unwrap()
@@ -157,7 +160,7 @@ struct D3D12DescriptorHeapInner {
     map: Box<[bool]>,
 }
 
-pub struct D3D12DescriptorHeap<T>(Arc<RefCell<D3D12DescriptorHeapInner>>, PhantomData<T>);
+pub struct D3D12DescriptorHeap<T>(Rc<RefCell<D3D12DescriptorHeapInner>>, PhantomData<T>);
 
 impl<T: D3D12HeapType> D3D12DescriptorHeap<T> {
     pub fn new(device: &ID3D12Device, size: usize) -> error::Result<D3D12DescriptorHeap<T>> {
@@ -182,7 +185,7 @@ impl<T> D3D12DescriptorHeap<T> {
             };
 
             Ok(D3D12DescriptorHeap(
-                Arc::new(RefCell::new(D3D12DescriptorHeapInner {
+                Rc::new(RefCell::new(D3D12DescriptorHeapInner {
                     device: device.clone(),
                     heap,
                     ty: desc.Type,
@@ -207,10 +210,10 @@ impl<T> D3D12DescriptorHeap<T> {
     /// size must also divide equally into the size of the heap.
     pub unsafe fn suballocate(self, size: usize) -> (Vec<D3D12DescriptorHeap<T>>, ID3D12DescriptorHeap) {
         // has to be called right after creation.
-        assert_eq!(Arc::strong_count(&self.0), 1,
+        assert_eq!(Rc::strong_count(&self.0), 1,
                    "D3D12DescriptorHeap::suballocate can only be callled immediately after creation.");
 
-        let inner = Arc::try_unwrap(self.0)
+        let inner = Rc::try_unwrap(self.0)
             .expect("[d3d12] undefined behaviour to suballocate a descriptor heap with live descriptors.")
             .into_inner();
 
@@ -253,7 +256,7 @@ impl<T> D3D12DescriptorHeap<T> {
 
         (heaps.into_iter()
             .map(|inner| D3D12DescriptorHeap(
-                Arc::new(RefCell::new(inner)),
+                Rc::new(RefCell::new(inner)),
                 PhantomData::default()))
             .collect(), inner.heap)
     }
@@ -274,13 +277,13 @@ impl<T> D3D12DescriptorHeap<T> {
                         ptr: (handle.ptr as u64 - inner.cpu_start.ptr as u64) + gpu_start.ptr,
                     });
 
-                return Ok(D3D12DescriptorHeapSlot {
+                return Ok(Rc::new(D3D12DescriptorHeapSlotInner {
                     cpu_handle: handle,
                     slot: i,
-                    heap: Arc::clone(&self.0),
+                    heap: Rc::clone(&self.0),
                     gpu_handle,
                     _pd: Default::default(),
-                });
+                }));
             }
         }
 
@@ -293,7 +296,7 @@ impl<T> D3D12DescriptorHeap<T> {
     }
 }
 
-impl<T> Drop for D3D12DescriptorHeapSlot<T> {
+impl<T> Drop for D3D12DescriptorHeapSlotInner<T> {
     fn drop(&mut self) {
         let mut inner = self.heap.borrow_mut();
         inner.map[self.slot] = false;
diff --git a/librashader-runtime-d3d12/src/filter_chain.rs b/librashader-runtime-d3d12/src/filter_chain.rs
index 983f860..b605ccf 100644
--- a/librashader-runtime-d3d12/src/filter_chain.rs
+++ b/librashader-runtime-d3d12/src/filter_chain.rs
@@ -1,6 +1,6 @@
 use std::collections::VecDeque;
 use crate::{error, util};
-use crate::heap::{D3D12DescriptorHeap, CpuStagingHeap, ResourceWorkHeap, SamplerWorkHeap, RenderTargetHeap};
+use crate::descriptor_heap::{D3D12DescriptorHeap, CpuStagingHeap, ResourceWorkHeap, SamplerWorkHeap, RenderTargetHeap};
 use crate::samplers::SamplerSet;
 use crate::luts::LutTexture;
 use librashader_presets::{ShaderPreset, TextureConfig};
@@ -31,7 +31,7 @@ use crate::graphics_pipeline::{D3D12GraphicsPipeline, D3D12RootSignature};
 use crate::mipmap::D3D12MipmapGen;
 use crate::quad_render::DrawQuad;
 use crate::render_target::RenderTarget;
-use crate::texture::{InputTexture, OutputTexture};
+use crate::texture::{InputTexture, OutputDescriptor, OutputTexture};
 
 type ShaderPassMeta = ShaderPassArtifact<impl CompileReflectShader<HLSL, GlslangCompilation>>;
 
@@ -49,8 +49,10 @@ pub struct FilterChainD3D12 {
     staging_heap: D3D12DescriptorHeap<CpuStagingHeap>,
     rtv_heap: D3D12DescriptorHeap<RenderTargetHeap>,
 
-    pub texture_heap: ID3D12DescriptorHeap,
-    pub sampler_heap: ID3D12DescriptorHeap,
+    texture_heap: ID3D12DescriptorHeap,
+    sampler_heap: ID3D12DescriptorHeap,
+
+    residuals: Vec<OutputDescriptor>
 }
 
 pub(crate) struct FilterCommon {
@@ -90,7 +92,7 @@ impl FilterChainD3D12 {
         let (passes, semantics) = HLSL::compile_preset_passes::<GlslangCompilation, Box<dyn Error>>(
             preset.shaders,
             &preset.textures,
-        )?;
+        ).unwrap();
 
         let samplers = SamplerSet::new(device)?;
         let mipmap_gen = D3D12MipmapGen::new(device).unwrap();
@@ -112,7 +114,7 @@ impl FilterChainD3D12 {
         let root_signature = D3D12RootSignature::new(device)?;
 
         let (texture_heap, sampler_heap, filters)
-            = FilterChainD3D12::init_passes(device, &root_signature, passes, &semantics)?;
+            = FilterChainD3D12::init_passes(device, &root_signature, passes, &semantics).unwrap();
 
 
 
@@ -186,7 +188,8 @@ impl FilterChainD3D12 {
             feedback_framebuffers: feedback_framebuffers.into_boxed_slice(),
             history_framebuffers,
             texture_heap,
-            sampler_heap
+            sampler_heap,
+            residuals: Vec::new()
         })
     }
 
@@ -452,6 +455,8 @@ impl FilterChainD3D12 {
         options: Option<&()>,
     ) -> error::Result<()>
     {
+        drop(self.residuals.drain(..));
+
         let max = std::cmp::min(self.passes.len(), self.common.config.passes_enabled);
         let passes = &mut self.passes[0..max];
         if passes.is_empty() {
@@ -486,8 +491,13 @@ impl FilterChainD3D12 {
 
 
         let original = input;
-        let mut source = unsafe { original.cloned() };
+        let mut source = unsafe { original.clone() };
 
+        // swap output and feedback **before** recording command buffers
+        std::mem::swap(
+            &mut self.output_framebuffers,
+            &mut self.feedback_framebuffers,
+        );
 
         // rescale render buffers to ensure all bindings are valid.
         let mut source_size = source.size();
@@ -530,7 +540,6 @@ impl FilterChainD3D12 {
         let passes_len = passes.len();
         let (pass, last) = passes.split_at_mut(passes_len - 1);
 
-        let mut residuals = Vec::new();
 
         unsafe {
             let heaps = [self.texture_heap.clone(), self.sampler_heap.clone()];
@@ -582,11 +591,42 @@ impl FilterChainD3D12 {
             //     pass.config.filter,
             //     pass.config.wrap_mode,
             // )?;
-            residuals.push(out.output.descriptor);
-            source = self.common.output_textures[index].as_ref().unwrap().cloned()
+            self.residuals.push(out.output.descriptor);
+            source = self.common.output_textures[index].as_ref().unwrap().clone()
         }
 
+        // try to hint the optimizer
+        assert_eq!(last.len(), 1);
+        if let Some(pass) = last.iter_mut().next() {
+            source.filter = pass.config.filter;
+            source.wrap_mode = pass.config.wrap_mode;
 
+            let out = RenderTarget {
+                x: 0.0,
+                y: 0.0,
+                mvp: DEFAULT_MVP,
+                output: viewport.output.clone(),
+            };
+
+            pass.draw(
+                cmd,
+                passes_len - 1,
+                &self.common,
+                if pass.config.frame_count_mod > 0 {
+                    frame_count % pass.config.frame_count_mod as usize
+                } else {
+                    frame_count
+                } as u32,
+                1,
+                viewport,
+                &original,
+                &source,
+                &out,
+                QuadType::Final
+            )?;
+        }
+
+        // todo: history
         Ok(())
     }
 
diff --git a/librashader-runtime-d3d12/src/filter_pass.rs b/librashader-runtime-d3d12/src/filter_pass.rs
index 2099dac..32d2bd6 100644
--- a/librashader-runtime-d3d12/src/filter_pass.rs
+++ b/librashader-runtime-d3d12/src/filter_pass.rs
@@ -1,3 +1,4 @@
+use std::ops::Deref;
 use rustc_hash::FxHashMap;
 use windows::core::Interface;
 use windows::Win32::Foundation::RECT;
@@ -15,7 +16,7 @@ use crate::buffer::D3D12ConstantBuffer;
 use crate::{error, util};
 use crate::filter_chain::FilterCommon;
 use crate::graphics_pipeline::D3D12GraphicsPipeline;
-use crate::heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, ResourceWorkHeap, SamplerWorkHeap};
+use crate::descriptor_heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, ResourceWorkHeap, SamplerWorkHeap};
 use crate::render_target::RenderTarget;
 use crate::samplers::SamplerSet;
 use crate::texture::{InputTexture, OutputTexture};
@@ -65,7 +66,7 @@ impl BindSemantics for FilterPass {
             texture_binding[binding.binding as usize]
                 .copy_descriptor(*texture.descriptor.as_ref());
             sampler_binding[binding.binding as usize]
-                .copy_descriptor(*samplers.get(texture.wrap_mode, texture.filter).as_ref())
+                .copy_descriptor(*samplers.get(texture.wrap_mode, texture.filter).deref().as_ref())
         }
     }
 }
@@ -187,8 +188,8 @@ impl FilterPass {
         }
 
         unsafe {
-            cmd.SetGraphicsRootDescriptorTable(0, *self.texture_heap[0].as_ref());
-            cmd.SetGraphicsRootDescriptorTable(1, *self.sampler_heap[0].as_ref());
+            cmd.SetGraphicsRootDescriptorTable(0, *self.texture_heap[0].deref().as_ref());
+            cmd.SetGraphicsRootDescriptorTable(1, *self.sampler_heap[0].deref().as_ref());
         }
 
         // todo: check for non-renderpass.
diff --git a/librashader-runtime-d3d12/src/framebuffer.rs b/librashader-runtime-d3d12/src/framebuffer.rs
index b5f6d2a..00acaaf 100644
--- a/librashader-runtime-d3d12/src/framebuffer.rs
+++ b/librashader-runtime-d3d12/src/framebuffer.rs
@@ -1,3 +1,4 @@
+use std::ops::Deref;
 use windows::Win32::Graphics::Direct3D12::{D3D12_CPU_PAGE_PROPERTY_UNKNOWN, D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING, D3D12_FEATURE_DATA_FORMAT_SUPPORT, D3D12_FORMAT_SUPPORT1_MIP, D3D12_FORMAT_SUPPORT1_RENDER_TARGET, D3D12_FORMAT_SUPPORT1_SHADER_SAMPLE, D3D12_FORMAT_SUPPORT1_TEXTURE2D, D3D12_FORMAT_SUPPORT2_UAV_TYPED_STORE, D3D12_HEAP_FLAG_NONE, D3D12_HEAP_PROPERTIES, D3D12_HEAP_TYPE_DEFAULT, D3D12_MEMORY_POOL_UNKNOWN, D3D12_RENDER_TARGET_VIEW_DESC, D3D12_RENDER_TARGET_VIEW_DESC_0, D3D12_RESOURCE_DESC, D3D12_RESOURCE_DIMENSION_TEXTURE2D, D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET, D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, D3D12_RTV_DIMENSION_TEXTURE2D, D3D12_SHADER_RESOURCE_VIEW_DESC, D3D12_SHADER_RESOURCE_VIEW_DESC_0, D3D12_SRV_DIMENSION_TEXTURE2D, D3D12_TEX2D_RTV, D3D12_TEX2D_SRV, ID3D12Device, ID3D12Resource};
 use windows::Win32::Graphics::Dxgi::Common::{DXGI_SAMPLE_DESC};
 use librashader_common::{FilterMode, ImageFormat, Size, WrapMode};
@@ -5,7 +6,7 @@ use librashader_presets::Scale2D;
 use librashader_runtime::scaling::{MipmapSize, ViewportSize};
 use crate::error;
 use crate::error::assume_d3d12_init;
-use crate::heap::{CpuStagingHeap, D3D12DescriptorHeap, RenderTargetHeap};
+use crate::descriptor_heap::{CpuStagingHeap, D3D12DescriptorHeap, RenderTargetHeap};
 use crate::texture::{InputTexture, OutputTexture};
 use crate::util::d3d12_get_closest_format;
 
@@ -106,7 +107,7 @@ impl OwnedImage {
                 },
             };
 
-            self.device.CreateShaderResourceView(&self.handle, Some(&srv_desc), *descriptor.as_ref());
+            self.device.CreateShaderResourceView(&self.handle, Some(&srv_desc), *descriptor.deref().as_ref());
         }
 
         Ok(InputTexture::new(descriptor, self.size, self.format, wrap_mode, filter))
@@ -129,7 +130,7 @@ impl OwnedImage {
                 },
             };
 
-            self.device.CreateRenderTargetView(&self.handle, Some(&rtv_desc), *descriptor.as_ref());
+            self.device.CreateRenderTargetView(&self.handle, Some(&rtv_desc), *descriptor.deref().as_ref());
         }
 
         Ok(OutputTexture::new(descriptor, self.size))
diff --git a/librashader-runtime-d3d12/src/hello_triangle.rs b/librashader-runtime-d3d12/src/hello_triangle.rs
index 1e2a664..0770828 100644
--- a/librashader-runtime-d3d12/src/hello_triangle.rs
+++ b/librashader-runtime-d3d12/src/hello_triangle.rs
@@ -237,11 +237,12 @@ unsafe extern "system" fn debug_log(
 }
 
 pub mod d3d12_hello_triangle {
+    use std::ops::Deref;
     use super::*;
     use crate::filter_chain::FilterChainD3D12;
     use std::path::Path;
     use librashader_common::{FilterMode, Size, Viewport, WrapMode};
-    use crate::heap::{CpuStagingHeap, D3D12DescriptorHeap};
+    use crate::descriptor_heap::{CpuStagingHeap, D3D12DescriptorHeap};
     use crate::texture::{InputTexture, OutputTexture};
 
     const FRAME_COUNT: u32 = 2;
@@ -500,10 +501,10 @@ pub mod d3d12_hello_triangle {
                                 ..Default::default()
                             }
                         },
-                    }), *srv.as_ref())
+                    }), *srv.deref().as_ref())
                 }
 
-                populate_command_list(resources, &mut self.filter, self.framecount, *srv.as_ref()).unwrap();
+                populate_command_list(resources, &mut self.filter, self.framecount, *srv.deref().as_ref()).unwrap();
 
                 // Execute the command list.
                 let command_list = ID3D12CommandList::from(&resources.command_list);
@@ -590,6 +591,12 @@ pub mod d3d12_hello_triangle {
                 D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE,
             )]);
 
+            command_list.ResourceBarrier(&[transition_barrier(
+                &resources.render_targets[resources.frame_index as usize],
+                D3D12_RESOURCE_STATE_COPY_SOURCE,
+                D3D12_RESOURCE_STATE_RENDER_TARGET,
+            )]);
+
             filter.frame(
                 command_list,
                 InputTexture::new_from_raw(framebuffer,
@@ -602,14 +609,13 @@ pub mod d3d12_hello_triangle {
                     x: 0.0,
                     y: 0.0,
                     mvp: None,
-                    output: OutputTexture::new_from_raw(D3D12_CPU_DESCRIPTOR_HANDLE {
-                        ptr: 0
-                    }, Size::new(resources.viewport.Width as u32, resources.viewport.Height as u32)),
+                    output: OutputTexture::new_from_raw(rtv_handle,
+                                                        Size::new(resources.viewport.Width as u32, resources.viewport.Height as u32)),
                 }, frame_count, None).unwrap();
 
             command_list.ResourceBarrier(&[transition_barrier(
                 &resources.render_targets[resources.frame_index as usize],
-                D3D12_RESOURCE_STATE_COPY_SOURCE,
+                D3D12_RESOURCE_STATE_RENDER_TARGET,
                 D3D12_RESOURCE_STATE_PRESENT,
             )]);
         }
diff --git a/librashader-runtime-d3d12/src/lib.rs b/librashader-runtime-d3d12/src/lib.rs
index 06eda89..473a50d 100644
--- a/librashader-runtime-d3d12/src/lib.rs
+++ b/librashader-runtime-d3d12/src/lib.rs
@@ -3,7 +3,7 @@
 #![feature(type_alias_impl_trait)]
 mod error;
 mod filter_chain;
-mod heap;
+mod descriptor_heap;
 mod hello_triangle;
 mod samplers;
 mod luts;
@@ -25,7 +25,8 @@ mod tests {
     #[test]
     fn triangle_d3d12() {
         let sample = hello_triangle::d3d12_hello_triangle::Sample::new(
-            "../test/slang-shaders/border/gameboy-player/gameboy-player-crt-royale.slangp",
+            "../test/slang-shaders/crt/crt-royale.slangp",
+            // "../test/slang-shaders/bezel/Mega_Bezel/Presets/MBZ__0__SMOOTH-ADV.slangp",
             &SampleCommandLine {
                 use_warp_device: false,
             },
diff --git a/librashader-runtime-d3d12/src/luts.rs b/librashader-runtime-d3d12/src/luts.rs
index 37499c1..8d8d6dd 100644
--- a/librashader-runtime-d3d12/src/luts.rs
+++ b/librashader-runtime-d3d12/src/luts.rs
@@ -1,7 +1,7 @@
-
+use std::ops::Deref;
 use crate::error;
 use crate::error::assume_d3d12_init;
-use crate::heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, CpuStagingHeap};
+use crate::descriptor_heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, CpuStagingHeap};
 use crate::util::{d3d12_get_closest_format, d3d12_resource_transition, d3d12_update_subresources};
 use librashader_common::{FilterMode, ImageFormat, Size, WrapMode};
 use librashader_runtime::image::Image;
@@ -91,7 +91,7 @@ impl LutTexture {
                 },
             };
 
-            device.CreateShaderResourceView(&resource, Some(&srv_desc), *descriptor.as_ref());
+            device.CreateShaderResourceView(&resource, Some(&srv_desc), *descriptor.deref().as_ref());
         }
 
         let mut buffer_desc = D3D12_RESOURCE_DESC {
diff --git a/librashader-runtime-d3d12/src/mipmap.rs b/librashader-runtime-d3d12/src/mipmap.rs
index 4e304fa..ca2d6e3 100644
--- a/librashader-runtime-d3d12/src/mipmap.rs
+++ b/librashader-runtime-d3d12/src/mipmap.rs
@@ -1,10 +1,11 @@
 
 use std::mem::ManuallyDrop;
+use std::ops::Deref;
 use windows::Win32::Graphics::Direct3D12::{D3D12_COMPUTE_PIPELINE_STATE_DESC, D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING, D3D12_RESOURCE_BARRIER, D3D12_RESOURCE_BARRIER_0, D3D12_RESOURCE_BARRIER_TYPE_UAV, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, D3D12_RESOURCE_UAV_BARRIER, D3D12_SHADER_BYTECODE, D3D12_SHADER_RESOURCE_VIEW_DESC, D3D12_SHADER_RESOURCE_VIEW_DESC_0, D3D12_SRV_DIMENSION_TEXTURE2D, D3D12_TEX2D_SRV, D3D12_TEX2D_UAV, D3D12_UAV_DIMENSION_TEXTURE2D, D3D12_UNORDERED_ACCESS_VIEW_DESC, D3D12_UNORDERED_ACCESS_VIEW_DESC_0, ID3D12DescriptorHeap, ID3D12Device, ID3D12GraphicsCommandList, ID3D12PipelineState, ID3D12Resource, ID3D12RootSignature};
 use windows::Win32::Graphics::Dxgi::Common::DXGI_FORMAT;
 use librashader_common::Size;
 use crate::{error, util};
-use crate::heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, ResourceWorkHeap};
+use crate::descriptor_heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, ResourceWorkHeap};
 use crate::util::d3d_compile_shader;
 use bytemuck::{Zeroable, Pod};
 use librashader_runtime::scaling::MipmapSize;
@@ -173,7 +174,7 @@ impl D3D12MipmapGen {
             };
 
             self.device.CreateShaderResourceView(resource,
-                                                 Some(&srv_desc), *srv.as_ref());
+                                                 Some(&srv_desc), *srv.deref().as_ref());
         }
 
         let mut heap_slots = Vec::with_capacity(miplevels as usize);
@@ -193,12 +194,12 @@ impl D3D12MipmapGen {
             };
 
             self.device.CreateUnorderedAccessView(resource, None,
-                                                  Some(&desc), *descriptor.as_ref()
+                                                  Some(&desc), *descriptor.deref().as_ref()
             );
             heap_slots.push(descriptor);
         }
 
-        cmd.SetComputeRootDescriptorTable(0, *heap_slots[0].as_ref());
+        cmd.SetComputeRootDescriptorTable(0, *heap_slots[0].deref().as_ref());
 
         for i in 1..miplevels as u32 {
             let scaled = size.scale_mipmap(i);
@@ -225,7 +226,7 @@ impl D3D12MipmapGen {
                 i
             );
 
-            cmd.SetComputeRootDescriptorTable(1, *heap_slots[i as usize].as_ref());
+            cmd.SetComputeRootDescriptorTable(1, *heap_slots[i as usize].deref().as_ref());
             cmd.SetComputeRoot32BitConstants(2,
                                              (std::mem::size_of::<MipConstants>() / std::mem::size_of::<u32>()) as u32,
                                              mipmap_params.as_ptr().cast(),
diff --git a/librashader-runtime-d3d12/src/samplers.rs b/librashader-runtime-d3d12/src/samplers.rs
index a82b88a..18b504a 100644
--- a/librashader-runtime-d3d12/src/samplers.rs
+++ b/librashader-runtime-d3d12/src/samplers.rs
@@ -1,5 +1,6 @@
+use std::ops::Deref;
 use crate::error;
-use crate::heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, SamplerPaletteHeap};
+use crate::descriptor_heap::{D3D12DescriptorHeap, D3D12DescriptorHeapSlot, SamplerPaletteHeap};
 use librashader_common::{FilterMode, WrapMode};
 use rustc_hash::FxHashMap;
 use windows::Win32::Graphics::Direct3D12::{
@@ -47,7 +48,7 @@ impl SamplerSet {
                         MinLOD: -D3D12_FLOAT32_MAX,
                         MaxLOD: D3D12_FLOAT32_MAX,
                     },
-                    *linear.as_ref(),
+                    *linear.deref().as_ref(),
                 );
 
                 let nearest = heap.alloc_slot()?;
@@ -64,7 +65,7 @@ impl SamplerSet {
                         MinLOD: -D3D12_FLOAT32_MAX,
                         MaxLOD: D3D12_FLOAT32_MAX,
                     },
-                    *nearest.as_ref(),
+                    *nearest.deref().as_ref(),
                 );
 
                 samplers.insert((*wrap_mode, FilterMode::Linear), linear);
diff --git a/librashader-runtime-d3d12/src/texture.rs b/librashader-runtime-d3d12/src/texture.rs
index 3e1cea1..67a9f6d 100644
--- a/librashader-runtime-d3d12/src/texture.rs
+++ b/librashader-runtime-d3d12/src/texture.rs
@@ -1,13 +1,16 @@
+use std::ops::Deref;
 use windows::Win32::Graphics::Direct3D12::{D3D12_CPU_DESCRIPTOR_HANDLE};
 use windows::Win32::Graphics::Dxgi::Common::DXGI_FORMAT;
 use librashader_common::{FilterMode, ImageFormat, Size, WrapMode};
-use crate::heap::{CpuStagingHeap, D3D12DescriptorHeapSlot, RenderTargetHeap};
+use crate::descriptor_heap::{CpuStagingHeap, D3D12DescriptorHeapSlot, RenderTargetHeap};
 
+#[derive(Clone)]
 pub(crate) enum InputDescriptor {
     Owned(D3D12DescriptorHeapSlot<CpuStagingHeap>),
     Raw(D3D12_CPU_DESCRIPTOR_HANDLE)
 }
 
+#[derive(Clone)]
 pub(crate) enum OutputDescriptor {
     Owned(D3D12DescriptorHeapSlot<RenderTargetHeap>),
     Raw(D3D12_CPU_DESCRIPTOR_HANDLE)
@@ -16,7 +19,7 @@ pub(crate) enum OutputDescriptor {
 impl AsRef<D3D12_CPU_DESCRIPTOR_HANDLE> for InputDescriptor {
     fn as_ref(&self) -> &D3D12_CPU_DESCRIPTOR_HANDLE {
         match self {
-            InputDescriptor::Owned(h) => h.as_ref(),
+            InputDescriptor::Owned(h) => h.deref().as_ref(),
             InputDescriptor::Raw(h) => h
         }
     }
@@ -25,12 +28,13 @@ impl AsRef<D3D12_CPU_DESCRIPTOR_HANDLE> for InputDescriptor {
 impl AsRef<D3D12_CPU_DESCRIPTOR_HANDLE> for OutputDescriptor {
     fn as_ref(&self) -> &D3D12_CPU_DESCRIPTOR_HANDLE {
         match self {
-            OutputDescriptor::Owned(h) => h.as_ref(),
+            OutputDescriptor::Owned(h) => h.deref().as_ref(),
             OutputDescriptor::Raw(h) => h
         }
     }
 }
 
+#[derive(Clone)]
 pub struct OutputTexture {
     pub(crate) descriptor: OutputDescriptor,
     pub(crate) size: Size<u32>,
@@ -59,6 +63,7 @@ impl OutputTexture {
     }
 }
 
+#[derive(Clone)]
 pub struct InputTexture {
     pub(crate) descriptor: InputDescriptor,
     pub(crate) size: Size<u32>,
@@ -99,14 +104,6 @@ impl InputTexture {
             filter
         }
     }
-
-    // parent descriptor has to stay alive.
-    pub fn cloned(&self) -> InputTexture {
-        unsafe {
-            Self::new_from_raw(*self.descriptor.as_ref(),
-                               self.size, self.format, self.wrap_mode, self.filter)
-        }
-    }
 }
 
 impl AsRef<InputTexture> for InputTexture {