Nerfed/Nerfed.Runtime/Graphics/Resources/GraphicsPipeline.cs

100 lines
4.9 KiB
C#

using System;
using System.Runtime.InteropServices;
using RefreshCS;
namespace Nerfed.Runtime.Graphics;
/// <summary>
/// Graphics pipelines encapsulate all of the render state in a single object. <br/>
/// These pipelines are bound before draw calls are issued.
/// </summary>
public class GraphicsPipeline : RefreshResource
{
protected override Action<IntPtr, IntPtr> ReleaseFunction => Refresh.Refresh_ReleaseGraphicsPipeline;
public Shader VertexShader;
public Shader FragmentShader;
public SampleCount SampleCount { get; }
#if DEBUG
internal GraphicsPipelineAttachmentInfo AttachmentInfo { get; }
#endif
public unsafe GraphicsPipeline(
GraphicsDevice device,
in GraphicsPipelineCreateInfo graphicsPipelineCreateInfo
) : base(device)
{
Refresh.GraphicsPipelineCreateInfo refreshGraphicsPipelineCreateInfo;
Refresh.VertexAttribute* vertexAttributes = (Refresh.VertexAttribute*) NativeMemory.Alloc(
(nuint) (graphicsPipelineCreateInfo.VertexInputState.VertexAttributes.Length * Marshal.SizeOf<Refresh.VertexAttribute>())
);
for (int i = 0; i < graphicsPipelineCreateInfo.VertexInputState.VertexAttributes.Length; i += 1)
{
vertexAttributes[i] = graphicsPipelineCreateInfo.VertexInputState.VertexAttributes[i].ToRefresh();
}
Refresh.VertexBinding* vertexBindings = (Refresh.VertexBinding*) NativeMemory.Alloc(
(nuint) (graphicsPipelineCreateInfo.VertexInputState.VertexBindings.Length * Marshal.SizeOf<Refresh.VertexBinding>())
);
for (int i = 0; i < graphicsPipelineCreateInfo.VertexInputState.VertexBindings.Length; i += 1)
{
vertexBindings[i] = graphicsPipelineCreateInfo.VertexInputState.VertexBindings[i].ToRefresh();
}
Refresh.ColorAttachmentDescription* colorAttachmentDescriptions = stackalloc Refresh.ColorAttachmentDescription[
graphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions.Length
];
for (int i = 0; i < graphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions.Length; i += 1)
{
colorAttachmentDescriptions[i].Format = (Refresh.TextureFormat) graphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions[i].Format;
colorAttachmentDescriptions[i].BlendState = graphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions[i].BlendState.ToRefresh();
}
refreshGraphicsPipelineCreateInfo.VertexShader = graphicsPipelineCreateInfo.VertexShader.Handle;
refreshGraphicsPipelineCreateInfo.FragmentShader = graphicsPipelineCreateInfo.FragmentShader.Handle;
refreshGraphicsPipelineCreateInfo.VertexInputState.VertexAttributes = vertexAttributes;
refreshGraphicsPipelineCreateInfo.VertexInputState.VertexAttributeCount = (uint) graphicsPipelineCreateInfo.VertexInputState.VertexAttributes.Length;
refreshGraphicsPipelineCreateInfo.VertexInputState.VertexBindings = vertexBindings;
refreshGraphicsPipelineCreateInfo.VertexInputState.VertexBindingCount = (uint) graphicsPipelineCreateInfo.VertexInputState.VertexBindings.Length;
refreshGraphicsPipelineCreateInfo.PrimitiveType = (Refresh.PrimitiveType) graphicsPipelineCreateInfo.PrimitiveType;
refreshGraphicsPipelineCreateInfo.RasterizerState = graphicsPipelineCreateInfo.RasterizerState.ToRefresh();
refreshGraphicsPipelineCreateInfo.MultisampleState = graphicsPipelineCreateInfo.MultisampleState.ToRefresh();
refreshGraphicsPipelineCreateInfo.DepthStencilState = graphicsPipelineCreateInfo.DepthStencilState.ToRefresh();
refreshGraphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentCount = (uint) graphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions.Length;
refreshGraphicsPipelineCreateInfo.AttachmentInfo.ColorAttachmentDescriptions = colorAttachmentDescriptions;
refreshGraphicsPipelineCreateInfo.AttachmentInfo.DepthStencilFormat = (Refresh.TextureFormat) graphicsPipelineCreateInfo.AttachmentInfo.DepthStencilFormat;
refreshGraphicsPipelineCreateInfo.AttachmentInfo.HasDepthStencilAttachment = Conversions.BoolToInt(graphicsPipelineCreateInfo.AttachmentInfo.HasDepthStencilAttachment);
refreshGraphicsPipelineCreateInfo.BlendConstants[0] = graphicsPipelineCreateInfo.BlendConstants.R;
refreshGraphicsPipelineCreateInfo.BlendConstants[1] = graphicsPipelineCreateInfo.BlendConstants.G;
refreshGraphicsPipelineCreateInfo.BlendConstants[2] = graphicsPipelineCreateInfo.BlendConstants.B;
refreshGraphicsPipelineCreateInfo.BlendConstants[3] = graphicsPipelineCreateInfo.BlendConstants.A;
Handle = Refresh.Refresh_CreateGraphicsPipeline(device.Handle, refreshGraphicsPipelineCreateInfo);
if (Handle == IntPtr.Zero)
{
throw new Exception("Could not create graphics pipeline!");
}
NativeMemory.Free(vertexAttributes);
NativeMemory.Free(vertexBindings);
VertexShader = graphicsPipelineCreateInfo.VertexShader;
FragmentShader = graphicsPipelineCreateInfo.FragmentShader;
SampleCount = graphicsPipelineCreateInfo.MultisampleState.MultisampleCount;
#if DEBUG
AttachmentInfo = graphicsPipelineCreateInfo.AttachmentInfo;
#endif
}
}