basic rendering structure

lib/RefreshCS

@@ -1 +1 @@
-Subproject commit 5591c81d14d75dc24759dc2843e7b05ab6d98ecc
+Subproject commit 377d53f7a9645758a5702d86fa9059c4d8bd1835

src/BlendConstants.cs

@@ -0,0 +1,10 @@
+namespace Campari
+{
+    public struct BlendConstants
+    {
+        public float R;
+        public float G;
+        public float B;
+        public float A;
+    }
+}

src/Buffer.cs

@@ -0,0 +1,38 @@
+using System;
+using RefreshCS;
+
+namespace Campari
+{
+    public class Buffer : GraphicsResource
+    {
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyBuffer;
+
+        /* FIXME: could we have a special flags struct? */
+        public Buffer(RefreshDevice device, uint usageFlags, uint sizeInBytes) : base(device)
+        {
+            Handle = Refresh.Refresh_CreateBuffer(
+                device.Handle,
+                usageFlags,
+                sizeInBytes
+            );
+        }
+
+        public unsafe void SetData<T>(
+            uint offsetInBytes,
+            T[] data,
+            uint dataLengthInBytes
+        ) where T : unmanaged
+        {
+            fixed (T* ptr = &data[0])
+            {
+                Refresh.Refresh_SetBufferData(
+                    Device.Handle,
+                    Handle,
+                    offsetInBytes,
+                    (IntPtr) ptr,
+                    dataLengthInBytes
+                );
+            }
+        }
+    }
+}

src/CommandBuffer.cs

@@ -0,0 +1,173 @@
+using System;
+using System.Runtime.InteropServices;
+using RefreshCS;
+
+namespace Campari
+{
+    public struct CommandBuffer
+    {
+        public RefreshDevice Device { get; }
+        public IntPtr Handle { get; }
+
+        // called from RefreshDevice
+        internal CommandBuffer(RefreshDevice device, IntPtr handle)
+        {
+            Device = device;
+            Handle = handle;
+        }
+
+        public void BeginRenderPass(
+            RenderPass renderPass,
+            Framebuffer framebuffer,
+            ref Refresh.Rect renderArea,
+            Refresh.Color[] clearColors,
+            ref Refresh.DepthStencilValue depthStencilClearValue
+        ) {
+            var clearColorHandle = GCHandle.Alloc(clearColors, GCHandleType.Pinned);
+
+            Refresh.Refresh_BeginRenderPass(
+                Device.Handle,
+                Handle,
+                renderPass.Handle,
+                framebuffer.Handle,
+                ref renderArea,
+                clearColorHandle.AddrOfPinnedObject(),
+                (uint) clearColors.Length,
+                ref depthStencilClearValue
+            );
+
+            clearColorHandle.Free();
+        }
+
+        public void BindGraphicsPipeline(
+            GraphicsPipeline graphicsPipeline
+        ) {
+            Refresh.Refresh_BindGraphicsPipeline(
+                Device.Handle,
+                Handle,
+                graphicsPipeline.Handle
+            );
+        }
+
+        public unsafe uint PushVertexShaderParams<T>(
+            T[] uniforms
+        ) where T : unmanaged
+        {
+            fixed (T* ptr = &uniforms[0])
+            {
+                return Refresh.Refresh_PushVertexShaderParams(
+                    Device.Handle,
+                    Handle,
+                    (IntPtr) ptr,
+                    (uint) uniforms.Length
+                );
+            }
+        }
+
+        public unsafe uint PushFragmentShaderParams<T>(
+            T[] uniforms
+        ) where T : unmanaged
+        {
+            fixed (T* ptr = &uniforms[0])
+            {
+                return Refresh.Refresh_PushFragmentShaderParams(
+                    Device.Handle,
+                    Handle,
+                    (IntPtr) ptr,
+                    (uint) uniforms.Length
+                );
+            }
+        }
+
+        public void BindVertexBuffers(
+            uint firstBinding,
+            uint bindingCount,
+            Buffer[] buffers,
+            UInt64[] offsets
+        ) {
+            var bufferHandle = GCHandle.Alloc(buffers, GCHandleType.Pinned);
+            var offsetHandle = GCHandle.Alloc(offsets, GCHandleType.Pinned);
+
+            Refresh.Refresh_BindVertexBuffers(
+                Device.Handle,
+                Handle,
+                firstBinding,
+                bindingCount,
+                bufferHandle.AddrOfPinnedObject(),
+                offsetHandle.AddrOfPinnedObject()
+            );
+
+            bufferHandle.Free();
+            offsetHandle.Free();
+        }
+
+        public void BindIndexBuffer(
+            Buffer indexBuffer,
+            uint offset,
+            Refresh.IndexElementSize indexElementSize
+        ) {
+            Refresh.Refresh_BindIndexBuffer(
+                Device.Handle,
+                Handle,
+                indexBuffer.Handle,
+                offset,
+                indexElementSize
+            );
+        }
+
+        public void BindFragmentSamplers(
+            Texture[] textures,
+            Sampler[] samplers
+        ) {
+            var textureHandle = GCHandle.Alloc(textures, GCHandleType.Pinned);
+            var samplerHandle = GCHandle.Alloc(samplers, GCHandleType.Pinned);
+
+            Refresh.Refresh_BindFragmentSamplers(
+                Device.Handle,
+                Handle,
+                textureHandle.AddrOfPinnedObject(),
+                samplerHandle.AddrOfPinnedObject()
+            );
+
+            textureHandle.Free();
+            samplerHandle.Free();
+        }
+
+        public void DrawPrimitives(
+            uint vertexStart,
+            uint primitiveCount,
+            uint vertexParamOffset,
+            uint fragmentParamOffset
+        ) {
+            Refresh.Refresh_DrawPrimitives(
+                Device.Handle,
+                Handle,
+                vertexStart,
+                primitiveCount,
+                vertexParamOffset,
+                fragmentParamOffset
+            );
+        }
+
+        public void EndRenderPass()
+        {
+            Refresh.Refresh_EndRenderPass(
+                Device.Handle,
+                Handle
+            );
+        }
+
+        public void QueuePresent(ref TextureSlice textureSlice, ref Refresh.Rect rectangle, Refresh.Filter filter)
+        {
+            var refreshTextureSlice = textureSlice.ToRefreshTextureSlice();
+
+            Refresh.Refresh_QueuePresent(
+                Device.Handle,
+                Handle,
+                ref refreshTextureSlice,
+                ref rectangle,
+                filter
+            );
+        }
+    }
+}

src/Conversions.cs

@@ -0,0 +1,10 @@
+namespace Campari
+{
+    public static class Conversions
+    {
+        public static byte BoolToByte(bool b)
+        {
+            return (byte)(b ? 1 : 0);
+        }
+    }
+}

src/DepthStencilTarget.cs

@@ -3,7 +3,7 @@ using RefreshCS;
 
 namespace Campari
 {
-    class DepthStencilTarget : GraphicsResource
+    public class DepthStencilTarget : GraphicsResource
     {
         public uint Width { get; }
         public uint Height { get; }

src/Framebuffer.cs

@@ -0,0 +1,51 @@
+using System;
+using RefreshCS;
+
+namespace Campari
+{
+    public class Framebuffer : GraphicsResource
+    {
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyFramebuffer;
+
+        public unsafe Framebuffer(
+            RefreshDevice device,
+            uint width,
+            uint height,
+            RenderPass renderPass,
+            DepthStencilTarget depthStencilTarget, /* can be NULL */
+            params ColorTarget[] colorTargets
+        ) : base(device)
+        {
+            IntPtr[] colorTargetHandles = new IntPtr[colorTargets.Length];
+            for (var i = 0; i < colorTargets.Length; i += 1)
+            {
+                colorTargetHandles[i] = colorTargets[i].Handle;
+            }
+
+            IntPtr depthStencilTargetHandle;
+            if (depthStencilTarget == null)
+            {
+                depthStencilTargetHandle = IntPtr.Zero;
+            }
+            else
+            {
+                depthStencilTargetHandle = depthStencilTarget.Handle;
+            }
+
+            fixed (IntPtr* colorTargetHandlesPtr = colorTargetHandles)
+            {
+                Refresh.FramebufferCreateInfo framebufferCreateInfo = new Refresh.FramebufferCreateInfo
+                {
+                    width = width,
+                    height = height,
+                    colorTargetCount = (uint) colorTargets.Length,
+                    pColorTargets = (IntPtr) colorTargetHandlesPtr,
+                    depthStencilTarget = depthStencilTargetHandle,
+                    renderPass = renderPass.Handle
+                };
+
+                Handle = Refresh.Refresh_CreateFramebuffer(device.Handle, ref framebufferCreateInfo);
+            }
+        }
+    }
+}

src/GraphicsPipeline.cs

@@ -0,0 +1,99 @@
+using System;
+using System.Runtime.InteropServices;
+using RefreshCS;
+
+namespace Campari
+{
+    public class GraphicsPipeline : GraphicsResource
+    {
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyGraphicsPipeline;
+
+        public unsafe GraphicsPipeline(
+            RefreshDevice device,
+            ColorBlendState colorBlendState,
+            DepthStencilState depthStencilState,
+            ShaderStageState fragmentShaderState,
+            ShaderStageState vertexShaderState,
+            MultisampleState multisampleState,
+            GraphicsPipelineLayoutCreateInfo pipelineLayoutCreateInfo,
+            RasterizerState rasterizerState,
+            Refresh.PrimitiveType primitiveType,
+            VertexInputState vertexInputState,
+            ViewportState viewportState,
+            RenderPass renderPass
+        ) : base(device)
+        {
+            var blendStateHandle = GCHandle.Alloc(colorBlendState.ColorTargetBlendStates, GCHandleType.Pinned);
+            var vertexAttributesHandle = GCHandle.Alloc(vertexInputState.VertexAttributes, GCHandleType.Pinned);
+            var vertexBindingsHandle = GCHandle.Alloc(vertexInputState.VertexBindings, GCHandleType.Pinned);
+            var viewportHandle = GCHandle.Alloc(viewportState.Viewports, GCHandleType.Pinned);
+            var scissorHandle = GCHandle.Alloc(viewportState.Scissors, GCHandleType.Pinned);
+
+            Refresh.GraphicsPipelineCreateInfo graphicsPipelineCreateInfo;
+
+            graphicsPipelineCreateInfo.colorBlendState.logicOpEnable = Conversions.BoolToByte(colorBlendState.LogicOpEnable);
+            graphicsPipelineCreateInfo.colorBlendState.logicOp = colorBlendState.LogicOp;
+            graphicsPipelineCreateInfo.colorBlendState.blendStates = blendStateHandle.AddrOfPinnedObject();
+            graphicsPipelineCreateInfo.colorBlendState.blendStateCount = colorBlendState.BlendStateCount;
+            graphicsPipelineCreateInfo.colorBlendState.blendConstants[0] = colorBlendState.BlendConstants.R;
+            graphicsPipelineCreateInfo.colorBlendState.blendConstants[1] = colorBlendState.BlendConstants.G;
+            graphicsPipelineCreateInfo.colorBlendState.blendConstants[2] = colorBlendState.BlendConstants.B;
+            graphicsPipelineCreateInfo.colorBlendState.blendConstants[3] = colorBlendState.BlendConstants.A;
+
+            graphicsPipelineCreateInfo.depthStencilState.backStencilState = depthStencilState.BackStencilState;
+            graphicsPipelineCreateInfo.depthStencilState.compareOp = depthStencilState.CompareOp;
+            graphicsPipelineCreateInfo.depthStencilState.depthBoundsTestEnable = Conversions.BoolToByte(depthStencilState.DepthBoundsTestEnable);
+            graphicsPipelineCreateInfo.depthStencilState.depthTestEnable = Conversions.BoolToByte(depthStencilState.DepthTestEnable);
+            graphicsPipelineCreateInfo.depthStencilState.depthWriteEnable = Conversions.BoolToByte(depthStencilState.DepthWriteEnable);
+            graphicsPipelineCreateInfo.depthStencilState.frontStencilState = depthStencilState.FrontStencilState;
+            graphicsPipelineCreateInfo.depthStencilState.maxDepthBounds = depthStencilState.MaxDepthBounds;
+            graphicsPipelineCreateInfo.depthStencilState.minDepthBounds = depthStencilState.MinDepthBounds;
+            graphicsPipelineCreateInfo.depthStencilState.stencilTestEnable = Conversions.BoolToByte(depthStencilState.StencilTestEnable);
+
+            graphicsPipelineCreateInfo.vertexShaderState.entryPointName = vertexShaderState.EntryPointName;
+            graphicsPipelineCreateInfo.vertexShaderState.shaderModule = vertexShaderState.ShaderModule.Handle;
+            graphicsPipelineCreateInfo.vertexShaderState.uniformBufferSize = vertexShaderState.UniformBufferSize;
+
+            graphicsPipelineCreateInfo.fragmentShaderState.entryPointName = fragmentShaderState.EntryPointName;
+            graphicsPipelineCreateInfo.fragmentShaderState.shaderModule = fragmentShaderState.ShaderModule.Handle;
+            graphicsPipelineCreateInfo.fragmentShaderState.uniformBufferSize = fragmentShaderState.UniformBufferSize;
+
+            graphicsPipelineCreateInfo.multisampleState.multisampleCount = multisampleState.MultisampleCount;
+            graphicsPipelineCreateInfo.multisampleState.sampleMask = multisampleState.SampleMask;
+
+            graphicsPipelineCreateInfo.pipelineLayoutCreateInfo.vertexSamplerBindingCount = pipelineLayoutCreateInfo.VertexSamplerBindingCount;
+            graphicsPipelineCreateInfo.pipelineLayoutCreateInfo.fragmentSamplerBindingCount = pipelineLayoutCreateInfo.FragmentSamplerBindingCount;
+
+            graphicsPipelineCreateInfo.rasterizerState.cullMode = rasterizerState.CullMode;
+            graphicsPipelineCreateInfo.rasterizerState.depthBiasClamp = rasterizerState.DepthBiasClamp;
+            graphicsPipelineCreateInfo.rasterizerState.depthBiasConstantFactor = rasterizerState.DepthBiasConstantFactor;
+            graphicsPipelineCreateInfo.rasterizerState.depthBiasEnable = Conversions.BoolToByte(rasterizerState.DepthBiasEnable);
+            graphicsPipelineCreateInfo.rasterizerState.depthBiasSlopeFactor = rasterizerState.DepthBiasSlopeFactor;
+            graphicsPipelineCreateInfo.rasterizerState.depthClampEnable = Conversions.BoolToByte(rasterizerState.DepthClampEnable);
+            graphicsPipelineCreateInfo.rasterizerState.fillMode = rasterizerState.FillMode;
+            graphicsPipelineCreateInfo.rasterizerState.frontFace = rasterizerState.FrontFace;
+            graphicsPipelineCreateInfo.rasterizerState.lineWidth = rasterizerState.LineWidth;
+
+            graphicsPipelineCreateInfo.vertexInputState.vertexAttributes = vertexAttributesHandle.AddrOfPinnedObject();
+            graphicsPipelineCreateInfo.vertexInputState.vertexAttributeCount = vertexInputState.VertexAttributeCount;
+            graphicsPipelineCreateInfo.vertexInputState.vertexBindings = vertexBindingsHandle.AddrOfPinnedObject();
+            graphicsPipelineCreateInfo.vertexInputState.vertexBindingCount = vertexInputState.VertexBindingCount;
+
+            graphicsPipelineCreateInfo.viewportState.viewports = viewportHandle.AddrOfPinnedObject();
+            graphicsPipelineCreateInfo.viewportState.viewportCount = viewportState.ViewportCount;
+            graphicsPipelineCreateInfo.viewportState.scissors = scissorHandle.AddrOfPinnedObject();
+            graphicsPipelineCreateInfo.viewportState.scissorCount = viewportState.ScissorCount;
+
+            graphicsPipelineCreateInfo.primitiveType = primitiveType;
+            graphicsPipelineCreateInfo.renderPass = renderPass.Handle;
+
+            Handle = Refresh.Refresh_CreateGraphicsPipeline(device.Handle, ref graphicsPipelineCreateInfo);
+
+            blendStateHandle.Free();
+            vertexAttributesHandle.Free();
+            vertexBindingsHandle.Free();
+            viewportHandle.Free();
+            scissorHandle.Free();
+        }
+    }
+}

src/Rectangle.cs

@@ -1,18 +0,0 @@
-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/RefreshDevice.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 using System.Text;
 using RefreshCS;
 
@@ -21,6 +22,26 @@ namespace Campari
             );
         }
 
+        /* FIXME: pool this */
+        public CommandBuffer AcquireCommandBuffer()
+        {
+            var commandBufferHandle = Refresh.Refresh_AcquireCommandBuffer(Handle, 0);
+            return new CommandBuffer(this, commandBufferHandle);
+        }
+
+        public void Submit(CommandBuffer[] commandBuffers)
+        {
+            var commandBufferHandle = GCHandle.Alloc(commandBuffers, GCHandleType.Pinned);
+
+            Refresh.Refresh_Submit(
+                Handle,
+                (uint) commandBuffers.Length,
+                commandBufferHandle.AddrOfPinnedObject()
+            );
+
+            commandBufferHandle.Free();
+        }
+
         protected virtual void Dispose(bool disposing)
         {
             if (!IsDisposed)

src/RenderPass.cs

@@ -7,7 +7,10 @@ namespace Campari
     {
         protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroyRenderPass;
 
-        public unsafe RenderPass(RefreshDevice device, params Refresh.ColorTargetDescription[] colorTargetDescriptions) : base(device)
+        public unsafe RenderPass(
+            RefreshDevice device,
+            params Refresh.ColorTargetDescription[] colorTargetDescriptions
+        ) : base(device)
         {
             fixed (Refresh.ColorTargetDescription* ptr = colorTargetDescriptions)
             {

src/Sampler.cs

@@ -0,0 +1,18 @@
+using System;
+using RefreshCS;
+
+namespace Campari
+{
+    public class Sampler : GraphicsResource
+    {
+        protected override Action<IntPtr, IntPtr> QueueDestroyFunction => Refresh.Refresh_QueueDestroySampler;
+
+        public Sampler(
+            RefreshDevice device,
+            ref Refresh.SamplerStateCreateInfo samplerStateCreateInfo
+        ) : base(device)
+        {
+            Handle = Refresh.Refresh_CreateSampler(device.Handle, ref samplerStateCreateInfo);
+        }
+    }
+}

src/State/ColorBlendState.cs

@@ -0,0 +1,13 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public unsafe struct ColorBlendState
+    {
+        public bool LogicOpEnable;
+        public Refresh.LogicOp LogicOp;
+        public BlendConstants BlendConstants;
+        public uint BlendStateCount;
+        public Refresh.ColorTargetBlendState[] ColorTargetBlendStates;
+    }
+}

src/State/DepthStencilState.cs

@@ -0,0 +1,17 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct DepthStencilState
+    {
+        public bool DepthTestEnable;
+        public Refresh.StencilOpState BackStencilState;
+        public Refresh.StencilOpState FrontStencilState;
+        public Refresh.CompareOp CompareOp;
+        public bool DepthBoundsTestEnable;
+        public bool DepthWriteEnable;
+        public float MinDepthBounds;
+        public float MaxDepthBounds;
+        public bool StencilTestEnable;
+    }
+}

src/State/GraphicsPipelineLayoutCreateInfo.cs

@@ -0,0 +1,8 @@
+namespace Campari
+{
+    public struct GraphicsPipelineLayoutCreateInfo
+    {
+        public uint VertexSamplerBindingCount;
+        public uint FragmentSamplerBindingCount;
+    }
+}

src/State/MultisampleState.cs

@@ -0,0 +1,10 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct MultisampleState
+    {
+        public Refresh.SampleCount MultisampleCount;
+        public uint SampleMask;
+    }
+}

src/State/RasterizerState.cs

@@ -0,0 +1,17 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct RasterizerState
+    {
+        public Refresh.CullMode CullMode;
+        public float DepthBiasClamp;
+        public float DepthBiasConstantFactor;
+        public bool DepthBiasEnable;
+        public float DepthBiasSlopeFactor;
+        public bool DepthClampEnable;
+        public Refresh.FillMode FillMode;
+        public Refresh.FrontFace FrontFace;
+        public float LineWidth;
+    }
+}

src/State/ShaderStageState.cs

@@ -0,0 +1,9 @@
+namespace Campari
+{
+    public struct ShaderStageState
+    {
+        public ShaderModule ShaderModule;
+        public string EntryPointName;
+        public uint UniformBufferSize;
+    }
+}

src/State/VertexInputState.cs

@@ -0,0 +1,10 @@
+namespace Campari
+{
+    public struct VertexInputState
+    {
+        public VertexBinding[] VertexBindings;
+        public uint VertexBindingCount;
+        public VertexAttribute[] VertexAttributes;
+        public uint VertexAttributeCount;
+    }
+}

src/State/ViewportState.cs

@@ -0,0 +1,12 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct ViewportState
+    {
+        public Viewport[] Viewports;
+        public uint ViewportCount;
+        public Refresh.Rect[] Scissors;
+        public uint ScissorCount;
+    }
+}

src/TextureSlice.cs

@@ -1,9 +1,11 @@
-namespace Campari
+using RefreshCS;
+
+namespace Campari
 {
     public struct TextureSlice
     {
         public Texture Texture { get; }
-        public Rectangle Rectangle { get;  }
+        public Refresh.Rect Rectangle { get;  }
         public uint Depth { get; }
         public uint Layer { get; }
         public uint Level { get; }
@@ -11,13 +13,19 @@
         public TextureSlice(Texture texture)
         {
             Texture = texture;
-            Rectangle = new Rectangle(0, 0, (int) texture.Width, (int) texture.Height);
+            Rectangle = new Refresh.Rect
+            {
+                x = 0,
+                y = 0,
+                w = (int) texture.Width,
+                h = (int) texture.Height
+            };
             Depth = 0;
             Layer = 0;
             Level = 0;
         }
 
-        public TextureSlice(Texture texture, Rectangle rectangle, uint depth = 0, uint layer = 0, uint level = 0)
+        public TextureSlice(Texture texture, Refresh.Rect rectangle, uint depth = 0, uint layer = 0, uint level = 0)
         {
             Texture = texture;
             Rectangle = rectangle;
@@ -31,13 +39,7 @@
             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
-                },
+                rectangle = Rectangle,
                 depth = Depth,
                 layer = Layer,
                 level = Level

src/VertexAttribute.cs

@@ -0,0 +1,12 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct VertexAttribute
+    {
+        public uint Binding;
+        public uint Location;
+        public Refresh.VertexElementFormat Format;
+        public uint Offset;
+    }
+}

src/VertexBinding.cs

@@ -0,0 +1,11 @@
+using RefreshCS;
+
+namespace Campari
+{
+    public struct VertexBinding
+    {
+        public uint Binding;
+        public Refresh.VertexInputRate VertexInputRate;
+        public uint Stride;
+    }
+}

src/Viewport.cs

@@ -0,0 +1,12 @@
+namespace Campari
+{
+    public struct Viewport
+    {
+        public float X;
+        public float Y;
+        public float W;
+        public float H;
+        public float MinDepth;
+        public float MaxDepth;
+    }
+}