render pass and targets

lib/RefreshCS

@@ -1 +1 @@
-Subproject commit c6fddad50aaf4a6d00ca8571fb8f94876d0fcbef
+Subproject commit 5591c81d14d75dc24759dc2843e7b05ab6d98ecc

src/ColorTarget.cs

@@ -0,0 +1,22 @@
+using System;
+using RefreshCS;
+
+namespace Campari
+{
+    public class ColorTarget : GraphicsResource
+    {
+        public uint Width { get; }
+        public uint Height { get; }
+
+        public Texture Texture { get; }
+        public Refresh.ColorFormat Format => Texture.Format;
+
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyColorTarget;
+
+        public ColorTarget(RefreshDevice device, Refresh.SampleCount sampleCount, ref TextureSlice textureSlice) : base(device)
+        {
+            var refreshTextureSlice = textureSlice.ToRefreshTextureSlice();
+            Handle = Refresh.Refresh_CreateColorTarget(device.Handle, sampleCount, ref refreshTextureSlice);
+        }
+    }
+}

src/DepthStencilTarget.cs

@@ -0,0 +1,21 @@
+using System;
+using RefreshCS;
+
+namespace Campari
+{
+    class DepthStencilTarget : GraphicsResource
+    {
+        public uint Width { get; }
+        public uint Height { get; }
+        public Refresh.DepthFormat Format { get; }
+
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyDepthStencilTarget;
+
+        public DepthStencilTarget(RefreshDevice device, uint width, uint height, Refresh.DepthFormat depthFormat) : base(device)
+        {
+            Handle = Refresh.Refresh_CreateDepthStencilTarget(device.Handle, width, height, depthFormat);
+            Width = width;
+            Height = height;
+        }
+    }
+}

src/Rectangle.cs

@@ -0,0 +1,18 @@
+namespace Campari
+{
+    public struct Rectangle
+    {
+        public int X { get; }
+        public int Y { get; }
+        public int W { get; }
+        public int H { get; }
+
+        public Rectangle(int x, int y, int w, int h)
+        {
+            X = x;
+            Y = y;
+            W = w;
+            H = h;
+        }
+    }
+}

src/RenderPass.cs

@@ -24,7 +24,7 @@ namespace Campari
             RefreshDevice device,
             Refresh.DepthStencilTargetDescription depthStencilTargetDescription,
             params Refresh.ColorTargetDescription[] colorTargetDescriptions
-        ) : base(device) 
+        ) : base(device)
         {
             Refresh.DepthStencilTargetDescription* depthStencilPtr = &depthStencilTargetDescription;
 

src/Texture.cs

@@ -8,48 +8,65 @@ namespace Campari
     {
         public uint Height { get; }
         public uint Width { get; }
+        public Refresh.ColorFormat Format { get; }
 
         protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyTexture;
 
-        public Texture(RefreshDevice device, FileInfo fileInfo) : base(device) 
+        public static Texture LoadPNG(RefreshDevice device, FileInfo fileInfo)
         {
             var pixels = Refresh.Refresh_Image_Load(
-                fileInfo.FullName, 
-                out var width, 
-                out var height, 
+                fileInfo.FullName,
+                out var width,
+                out var height,
                 out var channels
             );
-            
-            IntPtr textureHandle = Refresh.Refresh_CreateTexture2D(
+
+            Refresh.TextureCreateInfo textureCreateInfo;
+            textureCreateInfo.width = (uint) width;
+            textureCreateInfo.height = (uint) height;
+            textureCreateInfo.depth = 1;
+            textureCreateInfo.format = Refresh.ColorFormat.R8G8B8A8;
+            textureCreateInfo.isCube = 0;
+            textureCreateInfo.levelCount = 1;
+            textureCreateInfo.sampleCount = Refresh.SampleCount.One;
+            textureCreateInfo.usageFlags = (uint) Refresh.TextureUsageFlagBits.SamplerBit;
+
+            var texture = new Texture(device, ref textureCreateInfo);
+
+            texture.SetData(pixels, (uint) (width * height * 4));
+
+            Refresh.Refresh_Image_Free(pixels);
+            return texture;
+        }
+
+        public Texture(RefreshDevice device, ref Refresh.TextureCreateInfo textureCreateInfo) : base(device)
+        {
+            Handle = Refresh.Refresh_CreateTexture(
                 device.Handle,
-                Refresh.ColorFormat.R8G8B8A8,
-                (uint)width,
-                (uint)height,
-                1,
-                (uint)Refresh.TextureUsageFlagBits.SamplerBit
+                ref textureCreateInfo
             );
 
+            Format = textureCreateInfo.format;
+        }
+
+        public void SetData(IntPtr data, uint dataLengthInBytes)
+        {
             Refresh.TextureSlice textureSlice;
-            textureSlice.texture = textureHandle;
+            textureSlice.texture = Handle;
             textureSlice.rectangle.x = 0;
             textureSlice.rectangle.y = 0;
-            textureSlice.rectangle.w = width;
-            textureSlice.rectangle.h = height;
+            textureSlice.rectangle.w = (int) Width;
+            textureSlice.rectangle.h = (int) Height;
             textureSlice.level = 0;
             textureSlice.layer = 0;
             textureSlice.depth = 0;
 
             Refresh.Refresh_SetTextureData(
-                device.Handle,
+                Device.Handle,
                 ref textureSlice,
-                pixels,
-                (uint)(width * height * 4)
+                data,
+                dataLengthInBytes
             );
-
-            Refresh.Refresh_Image_Free(pixels);
-
-            Width = (uint) width;
-            Height = (uint) height;
         }
     }
 }

src/TextureSlice.cs

@@ -0,0 +1,49 @@
+namespace Campari
+{
+    public struct TextureSlice
+    {
+        public Texture Texture { get; }
+        public Rectangle Rectangle { get;  }
+        public uint Depth { get; }
+        public uint Layer { get; }
+        public uint Level { get; }
+
+        public TextureSlice(Texture texture)
+        {
+            Texture = texture;
+            Rectangle = new Rectangle(0, 0, (int) texture.Width, (int) texture.Height);
+            Depth = 0;
+            Layer = 0;
+            Level = 0;
+        }
+
+        public TextureSlice(Texture texture, Rectangle rectangle, uint depth = 0, uint layer = 0, uint level = 0)
+        {
+            Texture = texture;
+            Rectangle = rectangle;
+            Depth = depth;
+            Layer = layer;
+            Level = level;
+        }
+
+        public RefreshCS.Refresh.TextureSlice ToRefreshTextureSlice()
+        {
+            RefreshCS.Refresh.TextureSlice textureSlice = new RefreshCS.Refresh.TextureSlice
+            {
+                texture = Texture.Handle,
+                rectangle = new RefreshCS.Refresh.Rect
+                {
+                    x = Rectangle.X, 
+                    y = Rectangle.Y, 
+                    w = Rectangle.W,
+                    h = Rectangle.H
+                },
+                depth = Depth,
+                layer = Layer,
+                level = Level
+            };
+
+            return textureSlice;
+        }
+    }
+}