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feat(meshlet): refactor meshlet pipeline and add render pass

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Refactor meshlet data structures to use packed uint triangle indices, update meshlet cooking and upload logic, and align HLSL mesh shader. Add MeshRenderPass with bindless rendering and blit support. Improve RenderExtractionSystem, RootSignatureLayout, and TestRenderPipeline. Update GraphicsTestWindow for new pipeline and meshlet logic. Includes code cleanups and comments.
This commit is contained in:
Misaki
2026-03-25 13:13:03 +09:00
parent 7860e5e341
commit b729ca86f5
12 changed files with 455 additions and 120 deletions
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48
src/Runtime/Ghost.Graphics.RHI/RootSignatureLayout.cs
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@@ -3,39 +3,8 @@ using System.Runtime.InteropServices;
namespace Ghost.Graphics.RHI;
/// <summary>
/// The layout of the root signature is:
/// <list space="bullet">
/// <item>
/// Global buffer (b0)
/// </item>
/// <item>
/// Per-view buffer (b1)
/// </item>
/// <item>
/// Per-object buffer (b2)
/// </item>
/// <item>
/// Per-material buffer (b3)
/// </item>
/// <item>
/// Descriptor table for bindless textures (t0)
/// </item>
/// <item>
/// Descriptor table for bindless samplers (s0)
/// </item>
/// </list>
/// </summary>
public static class RootSignatureLayout
{
// public const int GLOBAL_BUFFER_SLOT = 0;
// public const int PER_VIEW_BUFFER_SLOT = 1;
// public const int PER_OBJECT_BUFFER_SLOT = 2;
// public const int PER_MATERIAL_BUFFER_SLOT = 3;
// public const int TEXTURE_HEAP_SLOT = 0;
// public const int SAMPLER_HEAP_SLOT = 0;
public const int PUSH_CONSTANT_SLOT = 0;
public const int ROOT_PARAMETER_COUNT = 1;
@@ -46,26 +15,28 @@ public struct PushConstantsData
{
public uint globalIndex;
public uint viewIndex;
public uint instanceIndex;
public uint objectIndex;
public uint instanceIndex;
public uint materialIndex;
}
[StructLayout(LayoutKind.Sequential, Size = 8)]
[StructLayout(LayoutKind.Sequential, Size = 20)]
public struct GlobalFrameData
{
public uint viewBufferIndex;
public uint instanceBufferIndex;
public uint viewBufferCount;
public uint instanceBufferCount;
public uint userBufferIndex;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct InstanceData
{
public float4x4 localToWorld;
}
// The size should be 176 bytes (16-byte aligned)
[StructLayout(LayoutKind.Sequential, Pack = 1)]
[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct PerViewData
{
public float4x4 viewMatrix;
@@ -77,15 +48,14 @@ public struct PerViewData
public float4 screenSize; // xy: size, zw: 1/size
};
// The size should be 96 bytes (16-byte aligned)
[StructLayout(LayoutKind.Sequential, Pack = 1)]
[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct PerObjectData
{
public float4x4 localToWorld;
public float3 worldBoundsMin;
public uint vertexBuffer;
public float3 worldBoundsMax;
public uint indexBuffer;
public uint meshletBuffer;
public uint meshletVerticesBuffer;
public uint meshletTrianglesBuffer;