diff --git a/src/Audio/StreamingSound.cs b/src/Audio/StreamingSound.cs
index 4fa1cf9..df2c765 100644
--- a/src/Audio/StreamingSound.cs
+++ b/src/Audio/StreamingSound.cs
@@ -5,7 +5,8 @@ using System.Runtime.InteropServices;
 namespace MoonWorks.Audio
 {
     /// <summary>
-    /// For streaming long playback. Reads an OGG file.
+    /// For streaming long playback. 
+    /// Can be extended to support custom decoders.
     /// </summary>
     public abstract class StreamingSound : SoundInstance
     {
diff --git a/src/Graphics/BufferBinding.cs b/src/Graphics/Bindings/BufferBinding.cs
similarity index 100%
rename from src/Graphics/BufferBinding.cs
rename to src/Graphics/Bindings/BufferBinding.cs
diff --git a/src/Graphics/TextureSamplerBinding.cs b/src/Graphics/Bindings/TextureSamplerBinding.cs
similarity index 100%
rename from src/Graphics/TextureSamplerBinding.cs
rename to src/Graphics/Bindings/TextureSamplerBinding.cs
diff --git a/src/Graphics/CommandBuffer.cs b/src/Graphics/CommandBuffer.cs
index 7448380..316b762 100644
--- a/src/Graphics/CommandBuffer.cs
+++ b/src/Graphics/CommandBuffer.cs
@@ -19,21 +19,24 @@ namespace MoonWorks.Graphics
         public unsafe void BeginRenderPass(
             RenderPass renderPass,
             Framebuffer framebuffer,
-            ref Refresh.Rect renderArea,
-            ref Refresh.DepthStencilValue depthStencilClearValue,
-            params Refresh.Color[] clearColors
+            ref Rect renderArea,
+            ref DepthStencilValue depthStencilClearValue,
+            params Color[] clearColors
         ) {
-            fixed (Refresh.Color* clearColorPtr = &clearColors[0])
+            var refreshRenderArea = renderArea.ToRefresh();
+            var refreshDepthStencilClearValue = depthStencilClearValue.ToRefresh();
+
+            fixed (Color* clearColorPtr = &clearColors[0])
             {
                 Refresh.Refresh_BeginRenderPass(
                     Device.Handle,
                     Handle,
                     renderPass.Handle,
                     framebuffer.Handle,
-                    ref renderArea,
+                    ref refreshRenderArea,
                     (IntPtr) clearColorPtr,
                     (uint)clearColors.Length,
-                    ref depthStencilClearValue
+                    ref refreshDepthStencilClearValue
                 );
             }
         }
@@ -41,17 +44,19 @@ namespace MoonWorks.Graphics
         public unsafe void BeginRenderPass(
             RenderPass renderPass,
             Framebuffer framebuffer,
-            ref Refresh.Rect renderArea,
-            params Refresh.Color[] clearColors
+            ref Rect renderArea,
+            params Color[] clearColors
         ) {
-            fixed (Refresh.Color* clearColorPtr = &clearColors[0])
+            var refreshRenderArea = renderArea.ToRefresh();
+
+            fixed (Color* clearColorPtr = &clearColors[0])
             {
                 Refresh.Refresh_BeginRenderPass(
                     Device.Handle,
                     Handle,
                     renderPass.Handle,
                     framebuffer.Handle,
-                    ref renderArea,
+                    ref refreshRenderArea,
                     (IntPtr) clearColorPtr,
                     (uint) clearColors.Length,
                     IntPtr.Zero
@@ -323,23 +328,24 @@ namespace MoonWorks.Graphics
 
         public void QueuePresent(
             ref TextureSlice textureSlice,
-            ref Refresh.Rect destinationRectangle,
-            Refresh.Filter filter
+            ref Rect destinationRectangle,
+            Filter filter
         ) {
             var refreshTextureSlice = textureSlice.ToRefreshTextureSlice();
+            var refreshRect = destinationRectangle.ToRefresh();
 
             Refresh.Refresh_QueuePresent(
                 Device.Handle,
                 Handle,
                 ref refreshTextureSlice,
-                ref destinationRectangle,
-                filter
+                ref refreshRect,
+                (Refresh.Filter) filter
             );
         }
 
         public void QueuePresent(
             ref TextureSlice textureSlice,
-            Refresh.Filter filter
+            Filter filter
         ) {
             var refreshTextureSlice = textureSlice.ToRefreshTextureSlice();
 
@@ -348,13 +354,13 @@ namespace MoonWorks.Graphics
                 Handle,
                 ref refreshTextureSlice,
                 IntPtr.Zero,
-                filter
+                (Refresh.Filter) filter
             );
         }
 
         public void QueuePresent(
             Texture texture,
-            Refresh.Filter filter
+            Filter filter
         ) {
             var refreshTextureSlice = new Refresh.TextureSlice
             {
@@ -376,14 +382,14 @@ namespace MoonWorks.Graphics
                 Handle,
                 ref refreshTextureSlice,
                 IntPtr.Zero,
-                filter
+                (Refresh.Filter) filter
             );
         }
 
         public void CopyTextureToTexture(
             ref TextureSlice sourceTextureSlice,
             ref TextureSlice destinationTextureSlice,
-            Refresh.Filter filter
+            Filter filter
         ) {
             var sourceRefreshTextureSlice = sourceTextureSlice.ToRefreshTextureSlice();
             var destRefreshTextureSlice = destinationTextureSlice.ToRefreshTextureSlice();
@@ -393,7 +399,7 @@ namespace MoonWorks.Graphics
                 Handle,
                 ref sourceRefreshTextureSlice,
                 ref destRefreshTextureSlice,
-                filter
+                (Refresh.Filter) filter
             );
         }
 
diff --git a/src/Graphics/RefreshEnums.cs b/src/Graphics/RefreshEnums.cs
new file mode 100644
index 0000000..9a0da9b
--- /dev/null
+++ b/src/Graphics/RefreshEnums.cs
@@ -0,0 +1,298 @@
+using System;
+
+/* Recreate all the enums in here so we don't need to explicitly
+ * reference the RefreshCS namespace when using MoonWorks.Graphics
+ */
+namespace MoonWorks.Graphics
+{
+    public enum PresentMode
+    {
+        Immediate,
+        Mailbox,
+        FIFO,
+        FIFORelaxed
+    }
+
+    public enum PrimitiveType
+    {
+        PointList,
+        LineList,
+        LineStrip,
+        TriangleList,
+        TriangleStrip
+    }
+
+    public enum LoadOp
+    {
+        Load,
+        Clear,
+        DontCare
+    }
+
+    public enum StoreOp
+    {
+        Store,
+        DontCare
+    }
+
+    [Flags]
+    public enum ClearOptionsFlags : uint
+    {
+        Color = 1,
+        Depth = 2,
+        Stencil = 4,
+        DepthStencil = Depth | Stencil,
+        All = Color | Depth | Stencil
+    }
+
+    public enum IndexElementSize
+    {
+        Sixteen,
+        ThirtyTwo
+    }
+
+    public enum ColorFormat
+    {
+        R8G8B8A8,
+        R5G6B5,
+        A1R5G5B5,
+        B4G4R4A4,
+        BC1,
+        BC2,
+        BC3,
+        R8G8_SNORM,
+        R8G8B8A8_SNORM,
+        A2R10G10B10,
+        R16G16,
+        R16G16B16A16,
+        R8,
+        R32_SFLOAT,
+        R32G32_SFLOAT,
+        R32G32B32A32_SFLOAT,
+        R16_SFLOAT,
+        R16G16_SFLOAT,
+        R16G16B16A16_SFLOAT
+    }
+
+    public enum DepthFormat
+    {
+        Depth16,
+        Depth32,
+        Depth16Stencil8,
+        Depth32Stencil8
+    }
+
+    [Flags]
+    public enum TextureUsageFlags : uint
+    {
+        SamplerBit = 1,
+        ColorTargetBit = 2
+    }
+
+    public enum SampleCount
+    {
+        One,
+        Two,
+        Four,
+        Eight,
+        Sixteen,
+        ThirtyTwo,
+        SixtyFour
+    }
+
+    public enum CubeMapFace
+    {
+        PositiveX,
+        NegativeX,
+        PositiveY,
+        NegativeY,
+        PositiveZ,
+        NegativeZ
+    }
+
+    [Flags]
+    public enum BufferUsageFlags : uint
+    {
+        Vertex = 1,
+        Index = 2,
+        Compute = 4
+    }
+
+    public enum VertexElementFormat
+    {
+        Single,
+        Vector2,
+        Vector3,
+        Vector4,
+        Color,
+        Byte4,
+        Short2,
+        Short4,
+        NormalizedShort2,
+        NormalizedShort4,
+        HalfVector2,
+        HalfVector4
+    }
+
+    public enum VertexInputRate
+    {
+        Vertex,
+        Instance
+    }
+
+    public enum FillMode
+    {
+        Fill,
+        Line,
+        Point
+    }
+
+    public enum CullMode
+    {
+        None,
+        Front,
+        Back,
+        FrontAndBack
+    }
+
+    public enum FrontFace
+    {
+        CounterClockwise,
+        Clockwise
+    }
+
+    public enum CompareOp
+    {
+        Never,
+        Less,
+        Equal,
+        LessOrEqual,
+        Greater,
+        NotEqual,
+        GreaterOrEqual,
+        Always
+    }
+
+    public enum StencilOp
+    {
+        Keep,
+        Zero,
+        Replace,
+        IncrementAndClamp,
+        DecrementAndClamp,
+        Invert,
+        IncrementAndWrap,
+        DecrementAndWrap
+    }
+
+    public enum BlendOp
+    {
+        Add,
+        Subtract,
+        ReverseSubtract,
+        Min,
+        Max
+    }
+
+    public enum LogicOp
+    {
+        Clear,
+        And,
+        AndReverse,
+        Copy,
+        AndInverted,
+        NoOp,
+        Xor,
+        Or,
+        Nor,
+        Equivalent,
+        Invert,
+        OrReverse,
+        CopyInverted,
+        OrInverted,
+        Nand,
+        Set
+    }
+
+    public enum BlendFactor
+    {
+        Zero,
+        One,
+        SourceColor,
+        OneMinusSourceColor,
+        DestinationColor,
+        OneMinusDestinationColor,
+        SourceAlpha,
+        OneMinusSourceAlpha,
+        DestinationAlpha,
+        OneMinusDestinationAlpha,
+        ConstantColor,
+        OneMinusConstantColor,
+        ConstantAlpha,
+        OneMinusConstantAlpha,
+        SourceAlphaSaturate,
+        SourceOneColor,
+        OneMinusSourceOneColor,
+        SourceOneAlpha,
+        OneMinusSourceOneAlpha
+    }
+
+    [Flags]
+    public enum ColorComponentFlags : uint
+    {
+        R = 1,
+        G = 2,
+        B = 4,
+        A = 8,
+
+        RG = R | G,
+        RB = R | B,
+        RA = R | A,
+        GB = G | B,
+        GA = G | A,
+        BA = B | A,
+
+        RGB = R | G | B,
+        RGA = R | G | A,
+        GBA = G | B | A,
+
+        RGBA = R | G | B | A
+    }
+
+    public enum ShaderStageType
+    {
+        Vertex,
+        Fragment
+    }
+
+    public enum Filter
+    {
+        Nearest,
+        Linear,
+        Cubic
+    }
+
+    public enum SamplerMipmapMode
+    {
+        Nearest,
+        Linear
+    }
+
+    public enum SamplerAddressMode
+    {
+        Repeat,
+        MirroredRepeat,
+        ClampToEdge,
+        ClampToBorder
+    }
+
+    public enum BorderColor
+    {
+        FloatTransparentBlack,
+        IntTransparentBlack,
+        FloatOpaqueBlack,
+        IntOpaqueBlack,
+        FloatOpaqueWhite,
+        IntOpaqueWhite
+    }
+}
diff --git a/src/Graphics/RefreshStructs.cs b/src/Graphics/RefreshStructs.cs
new file mode 100644
index 0000000..355d71b
--- /dev/null
+++ b/src/Graphics/RefreshStructs.cs
@@ -0,0 +1,111 @@
+using RefreshCS;
+using System.Runtime.InteropServices;
+
+/* Recreate some structs in here so we don't need to explicitly
+ * reference the RefreshCS namespace when using MoonWorks.Graphics
+ */
+namespace MoonWorks.Graphics
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Color
+    {
+        public byte r;
+        public byte g;
+        public byte b;
+        public byte a;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct DepthStencilValue
+    {
+        public float depth;
+        public uint stencil;
+
+        // FIXME: can we do an unsafe cast somehow?
+        public Refresh.DepthStencilValue ToRefresh()
+        {
+            return new Refresh.DepthStencilValue
+            {
+                depth = depth,
+                stencil = stencil
+            };
+        }
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Rect
+    {
+        public int x;
+        public int y;
+        public int w;
+        public int h;
+
+        // FIXME: can we do an unsafe cast somehow?
+        public Refresh.Rect ToRefresh()
+        {
+            return new Refresh.Rect
+            {
+                x = x,
+                y = y,
+                w = w,
+                h = h
+            };
+        }
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Vec4
+    {
+        public float x;
+        public float y;
+        public float z;
+        public float w;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Viewport
+    {
+        public float x;
+        public float y;
+        public float w;
+        public float h;
+        public float minDepth;
+        public float maxDepth;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct VertexBinding
+    {
+        public uint binding;
+        public uint stride;
+        public VertexInputRate inputRate;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct VertexAttribute
+    {
+        public uint location;
+        public uint binding;
+        public VertexElementFormat format;
+        public uint offset;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct ColorTargetDescription
+    {
+        public ColorFormat format;
+        public SampleCount multisampleCount;
+        public LoadOp loadOp;
+        public StoreOp storeOp;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct DepthStencilTargetDescription
+    {
+        public DepthFormat depthFormat;
+        public LoadOp loadOp;
+        public StoreOp storeOp;
+        public LoadOp stencilLoadOp;
+        public StoreOp stencilStoreOp;
+    }
+}
diff --git a/src/Graphics/Buffer.cs b/src/Graphics/Resources/Buffer.cs
similarity index 95%
rename from src/Graphics/Buffer.cs
rename to src/Graphics/Resources/Buffer.cs
index a53a850..0ab08de 100644
--- a/src/Graphics/Buffer.cs
+++ b/src/Graphics/Resources/Buffer.cs
@@ -9,13 +9,13 @@ namespace MoonWorks.Graphics
 
         public Buffer(
             GraphicsDevice device,
-            Refresh.BufferUsageFlags usageFlags,
+            BufferUsageFlags usageFlags,
             uint sizeInBytes
         ) : base(device)
         {
             Handle = Refresh.Refresh_CreateBuffer(
                 device.Handle,
-                usageFlags,
+                (Refresh.BufferUsageFlags) usageFlags,
                 sizeInBytes
             );
         }
diff --git a/src/Graphics/ColorTarget.cs b/src/Graphics/Resources/ColorTarget.cs
similarity index 64%
rename from src/Graphics/ColorTarget.cs
rename to src/Graphics/Resources/ColorTarget.cs
index 25fd22a..84fd208 100644
--- a/src/Graphics/ColorTarget.cs
+++ b/src/Graphics/Resources/ColorTarget.cs
@@ -9,7 +9,7 @@ namespace MoonWorks.Graphics
         public uint Height { get; }
 
         public Texture Texture { get; }
-        public Refresh.ColorFormat Format => Texture.Format;
+        public ColorFormat Format => Texture.Format;
 
         protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyColorTarget;
 
@@ -17,14 +17,14 @@ namespace MoonWorks.Graphics
             GraphicsDevice device,
             uint width,
             uint height,
-            Refresh.ColorFormat format,
+            ColorFormat format,
             bool canBeSampled,
-            Refresh.SampleCount sampleCount = Refresh.SampleCount.One,
+            SampleCount sampleCount = SampleCount.One,
             uint levelCount = 1
         )
         {
-            var flags = Refresh.TextureUsageFlags.ColorTargetBit;
-            if (canBeSampled) { flags |= Refresh.TextureUsageFlags.SamplerBit; }
+            var flags = TextureUsageFlags.ColorTargetBit;
+            if (canBeSampled) { flags |= TextureUsageFlags.SamplerBit; }
 
             var texture = Texture.CreateTexture2D(
                 device,
@@ -41,10 +41,14 @@ namespace MoonWorks.Graphics
             return new ColorTarget(device, sampleCount, ref textureSlice);
         }
 
-        public ColorTarget(GraphicsDevice device, Refresh.SampleCount sampleCount, ref TextureSlice textureSlice) : base(device)
+        public ColorTarget(GraphicsDevice device, SampleCount sampleCount, ref TextureSlice textureSlice) : base(device)
         {
             var refreshTextureSlice = textureSlice.ToRefreshTextureSlice();
-            Handle = Refresh.Refresh_CreateColorTarget(device.Handle, sampleCount, ref refreshTextureSlice);
+            Handle = Refresh.Refresh_CreateColorTarget(
+                device.Handle, 
+                (Refresh.SampleCount) sampleCount, 
+                ref refreshTextureSlice
+            );
         }
     }
 }
diff --git a/src/Graphics/ComputePipeline.cs b/src/Graphics/Resources/ComputePipeline.cs
similarity index 100%
rename from src/Graphics/ComputePipeline.cs
rename to src/Graphics/Resources/ComputePipeline.cs
diff --git a/src/Graphics/DepthStencilTarget.cs b/src/Graphics/Resources/DepthStencilTarget.cs
similarity index 63%
rename from src/Graphics/DepthStencilTarget.cs
rename to src/Graphics/Resources/DepthStencilTarget.cs
index e123680..5d093e0 100644
--- a/src/Graphics/DepthStencilTarget.cs
+++ b/src/Graphics/Resources/DepthStencilTarget.cs
@@ -7,7 +7,7 @@ namespace MoonWorks.Graphics
     {
         public uint Width { get; }
         public uint Height { get; }
-        public Refresh.DepthFormat Format { get; }
+        public DepthFormat Format { get; }
 
         protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyDepthStencilTarget;
 
@@ -15,12 +15,18 @@ namespace MoonWorks.Graphics
             GraphicsDevice device,
             uint width,
             uint height,
-            Refresh.DepthFormat depthFormat
+            DepthFormat depthFormat
         ) : base(device)
         {
-            Handle = Refresh.Refresh_CreateDepthStencilTarget(device.Handle, width, height, depthFormat);
+            Handle = Refresh.Refresh_CreateDepthStencilTarget(
+                device.Handle, 
+                width, 
+                height, 
+                (Refresh.DepthFormat) depthFormat
+            );
             Width = width;
             Height = height;
+            Format = depthFormat;
         }
     }
 }
diff --git a/src/Graphics/Framebuffer.cs b/src/Graphics/Resources/Framebuffer.cs
similarity index 100%
rename from src/Graphics/Framebuffer.cs
rename to src/Graphics/Resources/Framebuffer.cs
diff --git a/src/Graphics/GraphicsPipeline.cs b/src/Graphics/Resources/GraphicsPipeline.cs
similarity index 97%
rename from src/Graphics/GraphicsPipeline.cs
rename to src/Graphics/Resources/GraphicsPipeline.cs
index d83c0b3..087c726 100644
--- a/src/Graphics/GraphicsPipeline.cs
+++ b/src/Graphics/Resources/GraphicsPipeline.cs
@@ -17,7 +17,7 @@ namespace MoonWorks.Graphics
             MultisampleState multisampleState,
             GraphicsPipelineLayoutCreateInfo pipelineLayoutCreateInfo,
             RasterizerState rasterizerState,
-            Refresh.PrimitiveType primitiveType,
+            PrimitiveType primitiveType,
             VertexInputState vertexInputState,
             ViewportState viewportState,
             RenderPass renderPass
@@ -38,7 +38,7 @@ namespace MoonWorks.Graphics
             Refresh.GraphicsPipelineCreateInfo graphicsPipelineCreateInfo;
 
             graphicsPipelineCreateInfo.colorBlendState.logicOpEnable = Conversions.BoolToByte(colorBlendState.LogicOpEnable);
-            graphicsPipelineCreateInfo.colorBlendState.logicOp = colorBlendState.LogicOp;
+            graphicsPipelineCreateInfo.colorBlendState.logicOp = (Refresh.LogicOp) colorBlendState.LogicOp;
             graphicsPipelineCreateInfo.colorBlendState.blendStates = (IntPtr) colorTargetBlendStates;
             graphicsPipelineCreateInfo.colorBlendState.blendStateCount = (uint) colorBlendState.ColorTargetBlendStates.Length;
             graphicsPipelineCreateInfo.colorBlendState.blendConstants[0] = colorBlendState.BlendConstants.R;
@@ -90,7 +90,7 @@ namespace MoonWorks.Graphics
             graphicsPipelineCreateInfo.viewportState.scissors = scissorHandle.AddrOfPinnedObject();
             graphicsPipelineCreateInfo.viewportState.scissorCount = (uint) viewportState.Scissors.Length;
 
-            graphicsPipelineCreateInfo.primitiveType = primitiveType;
+            graphicsPipelineCreateInfo.primitiveType = (Refresh.PrimitiveType) primitiveType;
             graphicsPipelineCreateInfo.renderPass = renderPass.Handle;
 
             Handle = Refresh.Refresh_CreateGraphicsPipeline(device.Handle, ref graphicsPipelineCreateInfo);
diff --git a/src/Graphics/RenderPass.cs b/src/Graphics/Resources/RenderPass.cs
similarity index 73%
rename from src/Graphics/RenderPass.cs
rename to src/Graphics/Resources/RenderPass.cs
index c8c123b..512a117 100644
--- a/src/Graphics/RenderPass.cs
+++ b/src/Graphics/Resources/RenderPass.cs
@@ -9,10 +9,10 @@ namespace MoonWorks.Graphics
 
         public unsafe RenderPass(
             GraphicsDevice device,
-            params Refresh.ColorTargetDescription[] colorTargetDescriptions
+            params ColorTargetDescription[] colorTargetDescriptions
         ) : base(device)
         {
-            fixed (Refresh.ColorTargetDescription* ptr = colorTargetDescriptions)
+            fixed (ColorTargetDescription* ptr = colorTargetDescriptions)
             {
                 Refresh.RenderPassCreateInfo renderPassCreateInfo;
                 renderPassCreateInfo.colorTargetCount = (uint) colorTargetDescriptions.Length;
@@ -25,13 +25,13 @@ namespace MoonWorks.Graphics
 
         public unsafe RenderPass(
             GraphicsDevice device,
-            Refresh.DepthStencilTargetDescription depthStencilTargetDescription,
-            params Refresh.ColorTargetDescription[] colorTargetDescriptions
+            DepthStencilTargetDescription depthStencilTargetDescription,
+            params ColorTargetDescription[] colorTargetDescriptions
         ) : base(device)
         {
-            Refresh.DepthStencilTargetDescription* depthStencilPtr = &depthStencilTargetDescription;
+            DepthStencilTargetDescription* depthStencilPtr = &depthStencilTargetDescription;
 
-            fixed (Refresh.ColorTargetDescription* colorPtr = colorTargetDescriptions)
+            fixed (ColorTargetDescription* colorPtr = colorTargetDescriptions)
             {
                 Refresh.RenderPassCreateInfo renderPassCreateInfo;
                 renderPassCreateInfo.colorTargetCount = (uint)colorTargetDescriptions.Length;
diff --git a/src/Graphics/Sampler.cs b/src/Graphics/Resources/Sampler.cs
similarity index 100%
rename from src/Graphics/Sampler.cs
rename to src/Graphics/Resources/Sampler.cs
diff --git a/src/Graphics/ShaderModule.cs b/src/Graphics/Resources/ShaderModule.cs
similarity index 90%
rename from src/Graphics/ShaderModule.cs
rename to src/Graphics/Resources/ShaderModule.cs
index 2892bd0..308c51e 100644
--- a/src/Graphics/ShaderModule.cs
+++ b/src/Graphics/Resources/ShaderModule.cs
@@ -10,7 +10,7 @@ namespace MoonWorks.Graphics
 
         public unsafe ShaderModule(GraphicsDevice device, FileInfo fileInfo) : base(device)
         {
-            fixed (uint* ptr = Bytecode.ReadBytecode(fileInfo))
+            fixed (uint* ptr = Bytecode.ReadBytecodeAsUInt32(fileInfo))
             {
                 Refresh.ShaderModuleCreateInfo shaderModuleCreateInfo;
                 shaderModuleCreateInfo.codeSize = (UIntPtr) fileInfo.Length;
diff --git a/src/Graphics/Texture.cs b/src/Graphics/Resources/Texture.cs
similarity index 79%
rename from src/Graphics/Texture.cs
rename to src/Graphics/Resources/Texture.cs
index 573a84c..616eb62 100644
--- a/src/Graphics/Texture.cs
+++ b/src/Graphics/Resources/Texture.cs
@@ -8,7 +8,7 @@ namespace MoonWorks.Graphics
     {
         public uint Width { get; }
         public uint Height { get; }
-        public Refresh.ColorFormat Format { get; }
+        public ColorFormat Format { get; }
 
         protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyTexture;
 
@@ -21,15 +21,15 @@ namespace MoonWorks.Graphics
                 out var channels
             );
 
-            MoonWorks.Graphics.TextureCreateInfo textureCreateInfo;
+            TextureCreateInfo textureCreateInfo;
             textureCreateInfo.Width = (uint)width;
             textureCreateInfo.Height = (uint)height;
             textureCreateInfo.Depth = 1;
-            textureCreateInfo.Format = Refresh.ColorFormat.R8G8B8A8;
+            textureCreateInfo.Format = ColorFormat.R8G8B8A8;
             textureCreateInfo.IsCube = false;
             textureCreateInfo.LevelCount = 1;
-            textureCreateInfo.SampleCount = Refresh.SampleCount.One;
-            textureCreateInfo.UsageFlags = Refresh.TextureUsageFlags.SamplerBit;
+            textureCreateInfo.SampleCount = SampleCount.One;
+            textureCreateInfo.UsageFlags = TextureUsageFlags.SamplerBit;
 
             var texture = new Texture(device, ref textureCreateInfo);
 
@@ -51,13 +51,13 @@ namespace MoonWorks.Graphics
             GraphicsDevice device,
             uint width,
             uint height,
-            Refresh.ColorFormat format,
-            Refresh.TextureUsageFlags usageFlags,
-            Refresh.SampleCount sampleCount = Refresh.SampleCount.One,
+            ColorFormat format,
+            TextureUsageFlags usageFlags,
+            SampleCount sampleCount = SampleCount.One,
             uint levelCount = 1
         )
         {
-            var textureCreateInfo = new MoonWorks.Graphics.TextureCreateInfo
+            var textureCreateInfo = new TextureCreateInfo
             {
                 Width = width,
                 Height = height,
@@ -77,13 +77,13 @@ namespace MoonWorks.Graphics
             uint width,
             uint height,
             uint depth,
-            Refresh.ColorFormat format,
-            Refresh.TextureUsageFlags usageFlags,
-            Refresh.SampleCount sampleCount = Refresh.SampleCount.One,
+            ColorFormat format,
+            TextureUsageFlags usageFlags,
+            SampleCount sampleCount = SampleCount.One,
             uint levelCount = 1
         )
         {
-            var textureCreateInfo = new MoonWorks.Graphics.TextureCreateInfo
+            var textureCreateInfo = new TextureCreateInfo
             {
                 Width = width,
                 Height = height,
@@ -101,13 +101,13 @@ namespace MoonWorks.Graphics
         public static Texture CreateTextureCube(
             GraphicsDevice device,
             uint size,
-            Refresh.ColorFormat format,
-            Refresh.TextureUsageFlags usageFlags,
-            Refresh.SampleCount sampleCount = Refresh.SampleCount.One,
+            ColorFormat format,
+            TextureUsageFlags usageFlags,
+            SampleCount sampleCount = SampleCount.One,
             uint levelCount = 1
         )
         {
-            var textureCreateInfo = new MoonWorks.Graphics.TextureCreateInfo
+            var textureCreateInfo = new TextureCreateInfo
             {
                 Width = size,
                 Height = size,
@@ -122,7 +122,7 @@ namespace MoonWorks.Graphics
             return new Texture(device, ref textureCreateInfo);
         }
 
-        public Texture(GraphicsDevice device, ref MoonWorks.Graphics.TextureCreateInfo textureCreateInfo) : base(device)
+        public Texture(GraphicsDevice device, ref TextureCreateInfo textureCreateInfo) : base(device)
         {
             var refreshTextureCreateInfo = textureCreateInfo.ToRefreshTextureCreateInfo();
 
diff --git a/src/Graphics/State/ColorBlendState.cs b/src/Graphics/State/ColorBlendState.cs
index c0b54b1..fd785db 100644
--- a/src/Graphics/State/ColorBlendState.cs
+++ b/src/Graphics/State/ColorBlendState.cs
@@ -5,7 +5,7 @@ namespace MoonWorks.Graphics
     public unsafe struct ColorBlendState
     {
         public bool LogicOpEnable;
-        public Refresh.LogicOp LogicOp;
+        public LogicOp LogicOp;
         public BlendConstants BlendConstants;
         public ColorTargetBlendState[] ColorTargetBlendStates;
     }
diff --git a/src/Graphics/State/TextureCreateInfo.cs b/src/Graphics/State/TextureCreateInfo.cs
index 4e8512a..3cf93da 100644
--- a/src/Graphics/State/TextureCreateInfo.cs
+++ b/src/Graphics/State/TextureCreateInfo.cs
@@ -8,10 +8,10 @@ namespace MoonWorks.Graphics
         public uint Height;
         public uint Depth;
         public bool IsCube;
-        public Refresh.SampleCount SampleCount;
+        public SampleCount SampleCount;
         public uint LevelCount;
-        public Refresh.ColorFormat Format;
-        public Refresh.TextureUsageFlags UsageFlags;
+        public ColorFormat Format;
+        public TextureUsageFlags UsageFlags;
 
         public Refresh.TextureCreateInfo ToRefreshTextureCreateInfo()
         {
@@ -21,10 +21,10 @@ namespace MoonWorks.Graphics
                 height = Height,
                 depth = Depth,
                 isCube = Conversions.BoolToByte(IsCube),
-                sampleCount = SampleCount,
+                sampleCount = (Refresh.SampleCount) SampleCount,
                 levelCount = LevelCount,
-                format = Format,
-                usageFlags = UsageFlags
+                format = (Refresh.ColorFormat) Format,
+                usageFlags = (Refresh.TextureUsageFlags) UsageFlags
             };
         }
     }
diff --git a/src/Graphics/State/VertexInputState.cs b/src/Graphics/State/VertexInputState.cs
index 070a3bc..f106c1d 100644
--- a/src/Graphics/State/VertexInputState.cs
+++ b/src/Graphics/State/VertexInputState.cs
@@ -4,7 +4,7 @@ namespace MoonWorks.Graphics
 {
     public struct VertexInputState
     {
-        public Refresh.VertexBinding[] VertexBindings;
-        public Refresh.VertexAttribute[] VertexAttributes;
+        public VertexBinding[] VertexBindings;
+        public VertexAttribute[] VertexAttributes;
     }
 }
diff --git a/src/Graphics/State/ViewportState.cs b/src/Graphics/State/ViewportState.cs
index 8ba36fb..bc84a59 100644
--- a/src/Graphics/State/ViewportState.cs
+++ b/src/Graphics/State/ViewportState.cs
@@ -4,7 +4,7 @@ namespace MoonWorks.Graphics
 {
     public struct ViewportState
     {
-        public Refresh.Viewport[] Viewports;
-        public Refresh.Rect[] Scissors;
+        public Viewport[] Viewports;
+        public Rect[] Scissors;
     }
 }
diff --git a/src/Graphics/BlendConstants.cs b/src/Graphics/Structs/BlendConstants.cs
similarity index 100%
rename from src/Graphics/BlendConstants.cs
rename to src/Graphics/Structs/BlendConstants.cs
diff --git a/src/Graphics/TextureSlice.cs b/src/Graphics/TextureSlice.cs
index 9b0fb7b..843a26f 100644
--- a/src/Graphics/TextureSlice.cs
+++ b/src/Graphics/TextureSlice.cs
@@ -34,9 +34,9 @@ namespace MoonWorks.Graphics
             Level = level;
         }
 
-        public RefreshCS.Refresh.TextureSlice ToRefreshTextureSlice()
+        public Refresh.TextureSlice ToRefreshTextureSlice()
         {
-            RefreshCS.Refresh.TextureSlice textureSlice = new RefreshCS.Refresh.TextureSlice
+            Refresh.TextureSlice textureSlice = new Refresh.TextureSlice
             {
                 texture = Texture.Handle,
                 rectangle = Rectangle,
diff --git a/src/Graphics/Bytecode.cs b/src/Graphics/Utility/Bytecode.cs
similarity index 92%
rename from src/Graphics/Bytecode.cs
rename to src/Graphics/Utility/Bytecode.cs
index f9a2982..30d2a3b 100644
--- a/src/Graphics/Bytecode.cs
+++ b/src/Graphics/Utility/Bytecode.cs
@@ -4,7 +4,7 @@ namespace MoonWorks.Graphics
 {
     public static class Bytecode
     {
-        public static uint[] ReadBytecode(FileInfo fileInfo)
+        public static uint[] ReadBytecodeAsUInt32(FileInfo fileInfo)
         {
             byte[] data;
             int size;
diff --git a/src/Graphics/Conversions.cs b/src/Graphics/Utility/Conversions.cs
similarity index 100%
rename from src/Graphics/Conversions.cs
rename to src/Graphics/Utility/Conversions.cs
diff --git a/src/PresentMode.cs b/src/PresentMode.cs
deleted file mode 100644
index 2abed9b..0000000
--- a/src/PresentMode.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace MoonWorks
-{
-    public enum PresentMode
-    {
-        Immediate,
-        Mailbox,
-        FIFO,
-        FIFORelaxed
-    }
-}