Misaki
1c155f962c
Major architecture upgrade: - Add native render pass merging (hardware pass grouping, load/store op inference) - Implement heap-based aliasing for textures & buffers (D3D12-style) - Unify resource model: buffers and textures in one registry - Extend builder API for buffer creation/usage, access flags, hints - Improve barrier/state tracking (buffer hints, indirect argument state) - Update caching, hashing, and debug output for new model - Add enums/structs: AttachmentLoadOp, StoreOp, BufferHint, etc. - D3D12 backend: support named resources, temp upload buffers, correct heap usage - Update docs, benchmarks, and project files for new features Brings render graph closer to AAA engine standards, enabling efficient memory usage, lower driver overhead, and a more flexible API.
217 lines
11 KiB
C#
217 lines
11 KiB
C#
using Ghost.Core;
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using Ghost.Graphics.Core;
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namespace Ghost.Graphics.RHI;
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// TODO: Add ICommandAllocator support for thread local command buffers. We often use one allocator for multiple command buffers in a single frame.
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/// <summary>
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/// D3D12-style command buffer interface for recording rendering commands
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/// </summary>
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public interface ICommandBuffer : IDisposable
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{
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/// <summary>
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/// Gets the space of the command buffer.
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/// </summary>
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CommandBufferType Type
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{
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get;
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}
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/// <summary>
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/// Indicates whether the command buffer contains any recorded commands.
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/// </summary>
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bool IsEmpty
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{
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get;
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}
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string Name
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{
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get;
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set;
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}
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/// <summary>
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/// Begins recording commands into this command buffer
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/// </summary>
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void Begin(ICommandAllocator allocator);
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/// <summary>
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/// Ends recording commands and prepares for submission
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/// </summary>
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Result End();
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/// <summary>
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/// Sets the viewport for rendering
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/// </summary>
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/// <param name="viewport">Viewport to set</param>
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void SetViewport(ViewportDesc viewport);
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/// <summary>
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/// Sets the scissor rectangle
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/// </summary>
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/// <param name="rect">Scissor rectangle to set</param>
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void SetScissorRect(RectDesc rect);
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/// <summary>
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/// Sets the optional render targets and optional depth Target for subsequent rendering operations.
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/// </summary>
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/// <remarks>
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/// To specify no render targets, provide an empty span for <paramref name="renderTargets"/>.
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/// Use <see cref="Handle{Texture}.Invalid"/> for <paramref name="depthTarget"/> if no depth Target is required.
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/// </remarks>
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/// <param name="renderTargets">A read-only span of handles to textures that will be used as render targets.
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/// The order of handles determines the order in which render targets are bound.</param>
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/// <param name="depthTarget">A handle to the texture to be used as the depth Target. Specify a invalid handle if no depth Target is required.</param>
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void SetRenderTargets(ReadOnlySpan<Handle<Texture>> renderTargets, Handle<Texture> depthTarget);
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/// <summary>
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/// Begins a render pass with the specified render Target
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/// </summary>
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/// <param name="rtDescs">Render Target descriptions</param>
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/// <param name="depthDesc">Depth stencil description</param>
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/// <param name="allowUAVWrites">Whether UAV writes are allowed during the render pass</param>
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void BeginRenderPass(ReadOnlySpan<PassRenderTargetDesc> rtDescs, PassDepthStencilDesc depthDesc, bool allowUAVWrites = false);
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/// <summary>
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/// Ends the current render pass
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/// </summary>
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void EndRenderPass();
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/// <summary>
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/// Inserts multiple resource barriers for state transitions.
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/// </summary>
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/// <param name="barrierDescs">Resource barrier descriptions</param>
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void ResourceBarrier(ReadOnlySpan<BarrierDesc> barrierDescs);
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/// <summary>
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/// Inserts a resource barrier for state transitions.
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/// </summary>
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/// <param name="resource">A handle to the GPU resource to transition.</param>
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/// <param name="stateBefore">The current state of the resource before the transition.</param>
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/// <param name="stateAfter">The desired state of the resource after the transition.</param>
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void ResourceBarrier(Handle<GPUResource> resource, ResourceState stateBefore, ResourceState stateAfter);
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/// <summary>
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/// Inserts a resource barrier for state transitions. The current state is tracked internally.
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/// </summary>
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/// <param name="resource">A handle to the GPU resource to transition.</param>
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/// <param name="stateAfter">The desired state of the resource after the transition.</param>
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void ResourceBarrier(Handle<GPUResource> resource, ResourceState stateAfter);
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/// <summary>
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/// Sets the pipeline state object
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/// </summary>
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/// <param name="pipelineKey">Pipeline state to set</param>
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void SetPipelineState(Key128<GraphicsPipeline> pipelineKey);
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/// <summary>
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/// Sets the constant buffer view for the specified slot in the graphics pipeline.
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/// </summary>
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/// <param name="slot">The zero-based index of the slot to bind the constant buffer view to.</param>
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/// <param name="buffer">A graphics buffer to use as the constant buffer view.</param>
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void SetConstantBufferView(uint slot, Handle<GraphicsBuffer> buffer);
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/// <summary>
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/// Binds a vertex buffer to the specified slot for subsequent draw calls.
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/// </summary>
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/// <param name="slot">The vertex buffer slot to bind to.</param>
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/// <param name="buffer">The handle to the graphics buffer containing vertex data.</param>
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/// <param name="offset">The Offset in bytes from the start of the buffer.</param>
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void SetVertexBuffer(uint slot, Handle<GraphicsBuffer> buffer, ulong offset = 0);
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/// <summary>
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/// Binds an index buffer for indexed drawing.
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/// </summary>
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/// <param name="buffer">The handle to the graphics buffer containing index data.</param>
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/// <param name="type">The space of indices (e.g., 16-bit or 32-bit).</param>
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/// <param name="offset">The Offset in bytes from the start of the buffer.</param>
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void SetIndexBuffer(Handle<GraphicsBuffer> buffer, IndexType type, ulong offset = 0);
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/// <summary>
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/// Sets the primitive topology to be used for subsequent drawing operations.
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/// </summary>
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/// <param name="topology">The primitive topology that determines how the input vertices are interpreted during rendering.</param>
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void SetPrimitiveTopology(PrimitiveTopology topology);
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/// <summary>
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/// Sets a 32-bit constant value in the graphics root signature at the specified index.
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/// </summary>
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/// <param name="rootIndex">The zero-based index of the root parameter in the graphics root signature to set the constant for.</param>
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/// <param name="constantBuffer">A read-only span containing the 32-bit constant values to set.</param>
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/// <param name="offsetIn32Bits">The Offset, in 32-bit values, from the start of the root parameter where the constants will be set.</param>
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void SetGraphicsRoot32Constants(uint rootIndex, ReadOnlySpan<uint> constantBuffer, uint offsetIn32Bits = 0);
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/// <summary>
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/// Issues a non-indexed draw call.
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/// </summary>
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/// <param name="vertexCount">Number of vertices to draw.</param>
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/// <param name="instanceCount">Number of instances to draw.</param>
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/// <param name="startVertex">Index of the first vertex to draw.</param>
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/// <param name="startInstance">Index of the first instance to draw.</param>
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void Draw(uint vertexCount, uint instanceCount = 1, uint startVertex = 0, uint startInstance = 0);
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/// <summary>
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/// Issues an indexed draw call.
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/// </summary>
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/// <param name="indexCount">Number of indices to draw.</param>
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/// <param name="instanceCount">Number of instances to draw.</param>
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/// <param name="startIndex">Index of the first index to draw.</param>
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/// <param name="baseVertex">Value added to each index before indexing the vertex buffer.</param>
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/// <param name="startInstance">Index of the first instance to draw.</param>
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void DrawIndexed(uint indexCount, uint instanceCount = 1, uint startIndex = 0, int baseVertex = 0, uint startInstance = 0);
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/// <summary>
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/// Dispatches compute threads
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/// </summary>
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/// <param name="threadGroupCountX">Thread groups in X dimension</param>
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/// <param name="threadGroupCountY">Thread groups in Y dimension</param>
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/// <param name="threadGroupCountZ">Thread groups in Z dimension</param>
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void DispatchCompute(uint threadGroupCountX, uint threadGroupCountY, uint threadGroupCountZ);
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/// <summary>
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/// Dispatches mesh shader threads
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/// </summary>
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/// <param name="threadGroupCountX">Thread groups in X dimension</param>
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/// <param name="threadGroupCountY">Thread groups in Y dimension</param>
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/// <param name="threadGroupCountZ">Thread groups in Z dimension</param>
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void DispatchMesh(uint threadGroupCountX, uint threadGroupCountY, uint threadGroupCountZ);
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/// <summary>
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/// Dispatches ray tracing threads
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/// </summary>
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// TODO: This method is not supported yet.
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void DispatchRay();
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/// <summary>
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/// Uploads the specified data to the buffer represented by the given handle.
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/// </summary>
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/// <typeparam name="T">The unmanaged Value space of the elements to upload to the buffer.</typeparam>
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/// <param name="buffer">A handle to the buffer that will receive the uploaded data.</param>
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/// <param name="data">A read-only span containing the data to upload to the buffer. The span must contain elements of space
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/// <typeparamref name="T"/>.</param>
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void UploadBuffer<T>(Handle<GraphicsBuffer> buffer, ReadOnlySpan<T> data)
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where T : unmanaged;
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/// <summary>
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/// Uploads texture data to the specified texture resource starting at the given subresource index.
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/// </summary>
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/// <param name="texture">The texture resource to which the subresource data will be uploaded. Must be a valid, initialized texture handle.</param>
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/// <param name="firstSubresource">The index of the first subresource in the texture to receive data. Must be less than the total number of subresources in the texture.</param>
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/// <param name="subresources">A reference to the structure containing the subresource data to upload. The data must match the Format and layout expected by the texture.</param>
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/// <param name="numSubresources">The number of subresources to upload, starting from <paramref name="firstSubresource"/>.
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/// Must be greater than zero and not exceed the remaining subresources in the texture.</param>
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void UploadTexture(Handle<Texture> texture, ReadOnlySpan<SubResourceData> subresources);
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/// <summary>
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/// Copies a specified number of bytes from the source graphics buffer to the destination graphics buffer.
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/// </summary>
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/// <param name="dest">The handle to the destination graphics buffer where data will be written. Cannot be null.</param>
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/// <param name="src">The handle to the source graphics buffer from which data will be read. Cannot be null.</param>
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/// <param name="destOffset">The byte Offset in the destination buffer at which to begin writing. Must be zero or greater.</param>
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/// <param name="srcOffset">The byte Offset in the source buffer at which to begin reading. Must be zero or greater.</param>
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/// <param name="numBytes">The number of bytes to copy. If zero, copies the remaining bytes from the source buffer starting at <paramref name="srcOffset"/>.</param>
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void CopyBuffer(Handle<GraphicsBuffer> dest, Handle<GraphicsBuffer> src, ulong destOffset = 0, ulong srcOffset = 0, ulong numBytes = 0);
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}
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