/// <summary> /// Function to return the draw call. /// </summary> /// <param name="allocator">The allocator used to create an instance of the object</param> /// <returns>The draw call created or updated by this builder.</returns> /// <exception cref="GorgonException">Thrown if a <see cref="GorgonVertexShader"/> is not assigned to the <see cref="GorgonPipelineState.VertexShader"/> property with the <see cref="PipelineState(GorgonPipelineStateBuilder)"/> command.</exception> /// <remarks> /// <para> /// Using an <paramref name="allocator"/> can provide different strategies when building draw calls. If omitted, the draw call will be created using the standard <see langword="new"/> keyword. /// </para> /// <para> /// A custom allocator can be beneficial because it allows us to use a pool for allocating the objects, and thus allows for recycling of objects. This keeps the garbage collector happy by keeping objects /// around for as long as we need them, instead of creating objects that can potentially end up in the large object heap or in Gen 2. /// </para> /// <para> /// A draw call requires that at least a vertex shader be bound. If none is present, then the method will throw an exception. /// </para> /// </remarks> public TDc Build(GorgonDrawCallPoolAllocator <TDc> allocator) { TDc final = OnCreate(allocator); if ((allocator == null) || (final.VertexShader.ConstantBuffers == null) || (final.PixelShader.Samplers == null) || (final.PixelShader.ShaderResources == null)) { final.SetupConstantBuffers(); final.SetupSamplers(); final.SetupViews(); } if (final.D3DState.VertexBuffers == null) { final.D3DState.VertexBuffers = new GorgonVertexBufferBindings(); } if (final.D3DState.StreamOutBindings == null) { final.D3DState.StreamOutBindings = new GorgonStreamOutBindings(); } StateCopy.CopyVertexBuffers(final.D3DState.VertexBuffers, DrawCall.VertexBufferBindings, DrawCall.InputLayout); StateCopy.CopyStreamOutBuffers(final.D3DState.StreamOutBindings, DrawCall.StreamOutBufferBindings); // Copy over the shader resources. if (DrawCall.D3DState.PipelineState?.PixelShader != null) { StateCopy.CopyConstantBuffers(final.D3DState.PsConstantBuffers, DrawCall.D3DState.PsConstantBuffers, 0); StateCopy.CopySamplers(final.D3DState.PsSamplers, DrawCall.D3DState.PsSamplers, 0); StateCopy.CopySrvs(final.D3DState.PsSrvs, DrawCall.D3DState.PsSrvs); } else { final.D3DState.PsConstantBuffers.Clear(); final.D3DState.PsSamplers.Clear(); final.D3DState.PsSrvs.Clear(); } if (DrawCall.D3DState.PipelineState?.VertexShader != null) { StateCopy.CopyConstantBuffers(final.D3DState.VsConstantBuffers, DrawCall.D3DState.VsConstantBuffers, 0); StateCopy.CopySamplers(final.D3DState.VsSamplers, DrawCall.D3DState.VsSamplers, 0); StateCopy.CopySrvs(final.D3DState.VsSrvs, DrawCall.D3DState.VsSrvs); } else { final.D3DState.VsConstantBuffers.Clear(); final.D3DState.VsSamplers.Clear(); final.D3DState.VsSrvs.Clear(); } if (DrawCall.D3DState.PipelineState?.GeometryShader != null) { StateCopy.CopyConstantBuffers(final.D3DState.GsConstantBuffers, DrawCall.D3DState.GsConstantBuffers, 0); StateCopy.CopySamplers(final.D3DState.GsSamplers, DrawCall.D3DState.GsSamplers, 0); StateCopy.CopySrvs(final.D3DState.GsSrvs, DrawCall.D3DState.GsSrvs); } else { final.D3DState.GsConstantBuffers.Clear(); final.D3DState.GsSamplers.Clear(); final.D3DState.GsSrvs.Clear(); } if (DrawCall.D3DState.PipelineState?.DomainShader != null) { StateCopy.CopyConstantBuffers(final.D3DState.DsConstantBuffers, DrawCall.D3DState.DsConstantBuffers, 0); StateCopy.CopySamplers(final.D3DState.DsSamplers, DrawCall.D3DState.DsSamplers, 0); StateCopy.CopySrvs(final.D3DState.DsSrvs, DrawCall.D3DState.DsSrvs); } else { final.D3DState.DsConstantBuffers.Clear(); final.D3DState.DsSamplers.Clear(); final.D3DState.DsSrvs.Clear(); } if (DrawCall.D3DState.PipelineState?.HullShader != null) { StateCopy.CopyConstantBuffers(final.D3DState.HsConstantBuffers, DrawCall.D3DState.HsConstantBuffers, 0); StateCopy.CopySamplers(final.D3DState.HsSamplers, DrawCall.D3DState.HsSamplers, 0); StateCopy.CopySrvs(final.D3DState.HsSrvs, DrawCall.D3DState.HsSrvs); } else { final.D3DState.HsConstantBuffers.Clear(); final.D3DState.HsSamplers.Clear(); final.D3DState.HsSrvs.Clear(); } // Copy over unordered access views. StateCopy.CopyReadWriteViews(final.D3DState.ReadWriteViews, DrawCall.D3DState.ReadWriteViews, 0); final.D3DState.PipelineState = DrawCall.PipelineState; // Copy the cached states. final.PipelineState.D3DBlendState = DrawCall.PipelineState.D3DBlendState; final.PipelineState.D3DDepthStencilState = DrawCall.PipelineState.D3DDepthStencilState; final.PipelineState.D3DRasterState = DrawCall.PipelineState.D3DRasterState; OnUpdate(final); if (final.PipelineState.VertexShader == null) { throw new GorgonException(GorgonResult.CannotCreate, Resources.GORGFX_ERR_NO_VERTEX_SHADER); } return(final); }
/// <summary> /// Function to set the vertex buffer bindings for the draw call. /// </summary> /// <param name="layout">The input layout to use.</param> /// <param name="bindings">The vertex buffer bindings to set.</param> /// <returns>The fluent builder interface.</returns> /// <exception cref="ArgumentNullException">Thrown when the <paramref name="layout"/> parameter is <b>null</b>.</exception> public TB VertexBuffers(GorgonInputLayout layout, IReadOnlyList <GorgonVertexBufferBinding> bindings) { StateCopy.CopyVertexBuffers(DrawCall.D3DState.VertexBuffers, bindings, layout ?? throw new ArgumentNullException(nameof(layout))); return((TB)this); }