diff --git a/librashader-runtime-d3d12/Cargo.toml b/librashader-runtime-d3d12/Cargo.toml
new file mode 100644
index 0000000..bc9def5
--- /dev/null
+++ b/librashader-runtime-d3d12/Cargo.toml
@@ -0,0 +1,44 @@
+[package]
+name = "librashader-runtime-d3d12"
+edition = "2021"
+
+license = "MPL-2.0 OR GPL-3.0-only"
+version = "0.1.0-beta.8"
+authors = ["Ronny Chan <ronny@ronnychan.ca>"]
+repository = "https://github.com/SnowflakePowered/librashader"
+readme = "../README.md"
+categories = ["emulators", "compilers", "graphics"]
+keywords = ["shader", "retroarch", "SPIR-V"]
+description = "RetroArch shaders for all."
+
+[dependencies]
+librashader-common = { path = "../librashader-common", features = ["d3d12"], version = "0.1.0-beta.8" }
+librashader-presets = { path = "../librashader-presets", version = "0.1.0-beta.8" }
+librashader-preprocess = { path = "../librashader-preprocess", version = "0.1.0-beta.8" }
+librashader-reflect = { path = "../librashader-reflect", version = "0.1.0-beta.8", features = ["standalone"]  }
+librashader-runtime = { path = "../librashader-runtime", version = "0.1.0-beta.8" }
+thiserror = "1.0.37"
+spirv_cross = { package = "librashader-spirv-cross", version = "0.23" }
+
+rustc-hash = "1.1.0"
+bytemuck = "1.12.3"
+array-init = "2.1.0"
+bit-set = "0.5.3"
+
+[target.'cfg(windows)'.dependencies.windows]
+version = "0.44.0"
+features = [
+    "Win32_Foundation",
+    "Win32_Graphics_Dxgi_Common",
+    "Win32_Graphics_Direct3D",
+    "Win32_Graphics_Direct3D12",
+    "Win32_Graphics_Direct3D_Fxc",
+    "Win32_Graphics_Gdi",
+    "Win32_Security",
+    "Win32_System_LibraryLoader",
+    "Win32_System_Threading",
+    "Win32_System_WindowsProgramming",
+    "Win32_UI_WindowsAndMessaging",
+]
+[dev-dependencies]
+gfx-maths = "0.2.8"
diff --git a/librashader-runtime-d3d12/src/heap.rs b/librashader-runtime-d3d12/src/heap.rs
index ad7cdc0..ca8f4f5 100644
--- a/librashader-runtime-d3d12/src/heap.rs
+++ b/librashader-runtime-d3d12/src/heap.rs
@@ -85,6 +85,8 @@ struct D3D12DescriptorHeapInner {
     //
     //  0 - Occupied
     //  1 - free
+
+    // todo: actually use a bitset here.
     map: Box<[bool]>,
 }
 
diff --git a/librashader-runtime-d3d12/src/lib.rs b/librashader-runtime-d3d12/src/lib.rs
new file mode 100644
index 0000000..5950a12
--- /dev/null
+++ b/librashader-runtime-d3d12/src/lib.rs
@@ -0,0 +1,29 @@
+#![feature(const_trait_impl)]
+#![feature(let_chains)]
+
+mod error;
+mod filter_chain;
+mod heap;
+mod hello_triangle;
+mod samplers;
+mod texture;
+mod util;
+mod mipmap;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::hello_triangle::{DXSample, SampleCommandLine};
+
+    #[test]
+    fn triangle_d3d12() {
+        let sample = hello_triangle::d3d12_hello_triangle::Sample::new(
+            "../test/slang-shaders/border/gameboy-player/gameboy-player-crt-royale.slangp",
+            &SampleCommandLine {
+                use_warp_device: false,
+            },
+        )
+        .unwrap();
+        hello_triangle::main(sample).unwrap()
+    }
+}
diff --git a/librashader-runtime-d3d12/src/mipmap.rs b/librashader-runtime-d3d12/src/mipmap.rs
new file mode 100644
index 0000000..4ceffae
--- /dev/null
+++ b/librashader-runtime-d3d12/src/mipmap.rs
@@ -0,0 +1,19 @@
+use windows::Win32::Graphics::Direct3D12::{D3D12_GPU_DESCRIPTOR_HANDLE, ID3D12Device, ID3D12PipelineState, ID3D12RootSignature};
+use librashader_common::Size;
+use crate::error;
+
+pub struct D3D12MipmapGen {
+    device: ID3D12Device,
+    root_signature: ID3D12RootSignature,
+    pipeline: ID3D12PipelineState,
+}
+
+impl D3D12MipmapGen {
+    pub fn new(device: &ID3D12Device) -> error::Result<D3D12MipmapGen> {
+        todo!()
+    }
+
+    pub fn generate_mipmaps(miplevels: u16, size: Size<u32>, handle: D3D12_GPU_DESCRIPTOR_HANDLE) {
+
+    }
+}
\ No newline at end of file