/// <summary>
/// Function to return the dispatch call.
/// </summary>
/// <param name="allocator">The allocator used to create an instance of the object</param>
/// <returns>The dispatch call created or updated by this builder.</returns>
/// <exception cref="GorgonException">Thrown if a <see cref="GorgonComputeShader"/> is not assigned to the <see cref="GorgonComputeShader"/> property with the <see cref="ComputeShader"/> command.</exception>
/// <remarks>
/// <para>
/// Using an <paramref name="allocator"/> can provide different strategies when building dispatch calls. If omitted, the dispatch 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 dispatch call requires that at least a vertex shader be bound. If none is present, then the method will throw an exception.
/// </para>
/// </remarks>
public GorgonDispatchCall Build(GorgonRingPool <GorgonDispatchCall> allocator)
{
var final = new GorgonDispatchCall();
final.Setup();
// Copy over the available constants.
StateCopy.CopyConstantBuffers(final.D3DState.CsConstantBuffers, _worker.D3DState.CsConstantBuffers, 0);
// Copy over samplers.
StateCopy.CopySamplers(final.D3DState.CsSamplers, _worker.D3DState.CsSamplers, 0);
// Copy over shader resource views.
(int _, int _) = _worker.D3DState.CsSrvs.GetDirtyItems();
StateCopy.CopySrvs(final.D3DState.CsSrvs, _worker.D3DState.CsSrvs);
// Copy over unordered access views.
StateCopy.CopyReadWriteViews(final.D3DState.CsReadWriteViews, _worker.D3DState.CsReadWriteViews, 0);
if (_worker.D3DState.ComputeShader == null)
{
throw new GorgonException(GorgonResult.CannotCreate, Resources.GORGFX_ERR_NO_COMPUTE_SHADER);
}
final.D3DState.ComputeShader = _worker.D3DState.ComputeShader;
return(final);
}
/// <summary>
/// Function to assign the list of shader resource views to the draw call.
/// </summary>
/// <param name="shaderType">The shader stage to use.</param>
/// <param name="resourceViews">The shader resource views to copy.</param>
/// <param name="startSlot">[Optional] The starting slot to use when copying the list.</param>
/// <returns>The fluent builder interface .</returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="startSlot"/> is less than 0, or greater than/equal to <see cref="GorgonShaderResourceViews.MaximumShaderResourceViewCount"/>.</exception>
/// <exception cref="NotSupportedException">Thrown if the <paramref name="shaderType"/> is not valid.</exception>
/// <remarks>
/// <para>
/// <see cref="ShaderType.Compute"/> shaders are not supported in this method will throw an exception.
/// </para>
/// </remarks>
public TB ShaderResources(ShaderType shaderType, IReadOnlyList <GorgonShaderResourceView> resourceViews, int startSlot = 0)
{
if ((startSlot < 0) || (startSlot >= GorgonShaderResourceViews.MaximumShaderResourceViewCount))
{
throw new ArgumentOutOfRangeException(nameof(startSlot), string.Format(Resources.GORGFX_ERR_SRV_SLOT_INVALID, GorgonShaderResourceViews.MaximumShaderResourceViewCount));
}
switch (shaderType)
{
case ShaderType.Pixel:
StateCopy.CopySrvs(DrawCall.D3DState.PsSrvs, resourceViews, startSlot);
break;
case ShaderType.Vertex:
StateCopy.CopySrvs(DrawCall.D3DState.VsSrvs, resourceViews, startSlot);
break;
case ShaderType.Geometry:
StateCopy.CopySrvs(DrawCall.D3DState.GsSrvs, resourceViews, startSlot);
break;
case ShaderType.Domain:
StateCopy.CopySrvs(DrawCall.D3DState.DsSrvs, resourceViews, startSlot);
break;
case ShaderType.Hull:
StateCopy.CopySrvs(DrawCall.D3DState.HsSrvs, resourceViews, startSlot);
break;
default:
throw new NotSupportedException(string.Format(Resources.GORGFX_ERR_SHADER_UNKNOWN_TYPE, shaderType));
}
return((TB)this);
}
/// <summary>
/// Function to assign the list of shader resource views to the dispatch call.
/// </summary>
/// <param name="resourceViews">The shader resource views to copy.</param>
/// <param name="startSlot">[Optional] The starting slot to use when copying the list.</param>
/// <returns>The fluent builder interface .</returns>
/// <exception cref="ArgumentNullException">Thrown when the <paramref name="startSlot"/> is less than 0, or greater than/equal to <see cref="GorgonShaderResourceViews.MaximumShaderResourceViewCount"/>.</exception>
public GorgonDispatchCallBuilder ShaderResources(IReadOnlyList <GorgonShaderResourceView> resourceViews, int startSlot = 0)
{
if ((startSlot < 0) || (startSlot >= GorgonShaderResourceViews.MaximumShaderResourceViewCount))
{
throw new ArgumentOutOfRangeException(nameof(startSlot), string.Format(Resources.GORGFX_ERR_SRV_SLOT_INVALID, GorgonShaderResourceViews.MaximumShaderResourceViewCount));
}
StateCopy.CopySrvs(_worker.D3DState.CsSrvs, resourceViews, startSlot);
return(this);
}
/// <summary>
/// Function to reset the builder to the specified draw call state.
/// </summary>
/// <param name="drawCall">[Optional] The specified draw call state to copy.</param>
/// <returns>The fluent builder interface.</returns>
public TB ResetTo(TDc drawCall = null)
{
if (drawCall == null)
{
return(Clear());
}
VertexBuffers(drawCall.InputLayout, drawCall.VertexBufferBindings);
StreamOutBuffers(drawCall.StreamOutBufferBindings);
// Copy over the available constants.
ConstantBuffers(ShaderType.Pixel, drawCall.D3DState.PsConstantBuffers);
ConstantBuffers(ShaderType.Vertex, drawCall.D3DState.VsConstantBuffers);
ConstantBuffers(ShaderType.Geometry, drawCall.D3DState.GsConstantBuffers);
ConstantBuffers(ShaderType.Domain, drawCall.D3DState.DsConstantBuffers);
ConstantBuffers(ShaderType.Hull, drawCall.D3DState.HsConstantBuffers);
SamplerStates(ShaderType.Pixel, drawCall.D3DState.PsSamplers);
SamplerStates(ShaderType.Vertex, drawCall.D3DState.VsSamplers);
SamplerStates(ShaderType.Geometry, drawCall.D3DState.GsSamplers);
SamplerStates(ShaderType.Domain, drawCall.D3DState.DsSamplers);
SamplerStates(ShaderType.Hull, drawCall.D3DState.HsSamplers);
StateCopy.CopySrvs(DrawCall.D3DState.PsSrvs, drawCall.D3DState.PsSrvs);
StateCopy.CopySrvs(DrawCall.D3DState.VsSrvs, drawCall.D3DState.VsSrvs);
StateCopy.CopySrvs(DrawCall.D3DState.GsSrvs, drawCall.D3DState.GsSrvs);
StateCopy.CopySrvs(DrawCall.D3DState.DsSrvs, drawCall.D3DState.DsSrvs);
StateCopy.CopySrvs(DrawCall.D3DState.HsSrvs, drawCall.D3DState.HsSrvs);
ReadWriteViews(drawCall.D3DState.ReadWriteViews);
DrawCall.D3DState.PipelineState = new GorgonPipelineState(drawCall.PipelineState);
// We need to copy the D3D states as well as they won't be updated unless we rebuild the pipeline state.
DrawCall.D3DState.PipelineState.D3DBlendState = drawCall.D3DState.PipelineState.D3DBlendState;
DrawCall.D3DState.PipelineState.D3DRasterState = drawCall.D3DState.PipelineState.D3DRasterState;
DrawCall.D3DState.PipelineState.D3DDepthStencilState = drawCall.D3DState.PipelineState.D3DDepthStencilState;
return(OnResetTo(drawCall));
}
/// <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);
}