/// <summary>
/// Creates a <see cref="RenderTargetView"/> with the specified width, height, and <see cref="Format"/>.
/// The render target is also bound as a shader resource (BindFlags.ShaderResource) and a <see cref="ShaderResourceView"/> is created.
/// </summary>
/// <param name="device">The current <see cref="Device"/> being used.</param>
/// <param name="width">The width of the <see cref="RenderTargetView"/> being created.</param>
/// <param name="height">The height of the <see cref="RenderTargetView"/> being created.</param>
/// <param name="format">
/// The <see cref="Format"/> of the <see cref="RenderTargetView"/> being created. The device is queried for support of the given format.
/// If the current hardware doesn't support the format, then a <see cref="NotSupportedException"/> is thrown.
/// </param>
/// <param name="targetTexture">The newly created <see cref="Texture2D"/> that is the backing resource for the <see cref="RenderTargetView"/>.</param>
/// <param name="shaderView">The newly created <see cref="ShaderResourceView"/> that can be used to bind the render target as input to a shader.</param>
/// <returns>The newly created <see cref="RenderTargetView"/> object.</returns>
public static RenderTargetView CreateRenderTarget(Device device, int width, int height, Format format, out Texture2D targetTexture, out ShaderResourceView shaderView)
{
FormatSupport support = device.CheckFormatSupport(format);
if ((support & FormatSupport.RenderTarget) != FormatSupport.RenderTarget)
{
throw new NotSupportedException("The given format (" + format.ToString() + ") is not supported as a RenderTarget on this GPU.");
}
targetTexture = CreateTexture2D(device, width, height, format, BindFlags.RenderTarget | BindFlags.ShaderResource);
shaderView = new ShaderResourceView(device, targetTexture);
// Is this necessary? It seems to work fine without it.
//RenderTargetViewDescription rtViewDesc = new RenderTargetViewDescription();
//rtViewDesc.ArraySize = 1;
//rtViewDesc.DepthSliceCount = 1;
//rtViewDesc.Dimension = RenderTargetViewDimension.Texture2D;
//rtViewDesc.ElementOffset = 0;
//rtViewDesc.ElementWidth = 0;
//rtViewDesc.FirstArraySlice = 0;
//rtViewDesc.FirstDepthSlice = 0;
//rtViewDesc.Format = format;
//rtViewDesc.MipSlice = 0;
return(new RenderTargetView(device, targetTexture));
}
/// <summary>
/// Creates an <see cref="UnorderedAccessView"/> with the specified width, height, and <see cref="Format"/>.
/// </summary>
/// <param name="device">The current <see cref="Device"/> being used.</param>
/// <param name="width">The width of the <see cref="UnorderedAccessView"/> being created.</param>
/// <param name="height">The height of the <see cref="UnorderedAccessView"/> being created.</param>
/// <param name="format">
/// The <see cref="Format"/> of the <see cref="UnorderedAccessView"/> being created. The device is queried for support of the given format.
/// If the current hardware doesn't support the format, then a <see cref="NotSupportedException"/> is thrown.
/// </param>
/// <param name="unorderedAccessViewTexture">The newly created <see cref="Texture2D"/> that is the backing resource for the <see cref="UnorderedAccessView"/>.</param>
/// <returns>The newly created <see cref="UnorderedAccessView"/> object.</returns>
public static UnorderedAccessView CreateUnorderedAccessView(Device device, int width, int height, Format format, out Texture2D unorderedAccessViewTexture)
{
FormatSupport support = device.CheckFormatSupport(format);
if ((support & FormatSupport.UnorderedAccessView) != FormatSupport.UnorderedAccessView)
{
throw new NotSupportedException("The given format (" + format.ToString() + ") is not supported as an UnorderedAccessView on this GPU.");
}
unorderedAccessViewTexture = CreateTexture2D(device, width, height, format, BindFlags.UnorderedAccess);
// Is this necessary?
//UnorderedAccessViewDescription uavViewDesc = new UnorderedAccessViewDescription();
//uavViewDesc.ArraySize = 1;
//uavViewDesc.Dimension = DepthStencilViewDimension.Texture2D;
//uavViewDesc.FirstArraySlice = 0;
//uavViewDesc.Flags = DepthStencilViewFlags.None;
//uavViewDesc.Format = format;
//uavViewDesc.MipSlice = 0;
return(new UnorderedAccessView(device, unorderedAccessViewTexture));
}
/// <summary>
/// Creates a <see cref="DepthStencilView"/> with the specified width, height, and <see cref="Format"/>.
/// </summary>
/// <param name="device">The current <see cref="Device"/> being used.</param>
/// <param name="width">The width of the <see cref="DepthStencilView"/> being created.</param>
/// <param name="height">The height of the <see cref="DepthStencilView"/> being created.</param>
/// <param name="format">
/// The <see cref="Format"/> of the <see cref="DepthStencilView"/> being created. The device is queried for support of the given format.
/// If the current hardware doesn't support the format, then a <see cref="NotSupportedException"/> is thrown.
/// </param>
/// <param name="depthStencilTexture">The newly created <see cref="Texture2D"/> that is the backing resource for the <see cref="DepthStencilView"/>.</param>
/// <returns>The newly created <see cref="DepthStencilView"/> object.</returns>
public static DepthStencilView CreateDepthStencilView(Device device, int width, int height, Format format, out Texture2D depthStencilTexture)
{
FormatSupport support = device.CheckFormatSupport(format);
if ((support & FormatSupport.DepthStencil) != FormatSupport.DepthStencil)
{
throw new NotSupportedException("The given format (" + format.ToString() + ") is not supported as a DepthStencil on this GPU.");
}
depthStencilTexture = CreateTexture2D(device, width, height, format, BindFlags.DepthStencil);
// Is this necessary? It seems to work fine without it.
//DepthStencilViewDescription dsViewDesc = new DepthStencilViewDescription();
//dsViewDesc.ArraySize = 1;
//dsViewDesc.Dimension = DepthStencilViewDimension.Texture2D;
//dsViewDesc.FirstArraySlice = 0;
//dsViewDesc.Flags = DepthStencilViewFlags.None;
//dsViewDesc.Format = format;
//dsViewDesc.MipSlice = 0;
return(new DepthStencilView(device, depthStencilTexture));
}
/// <summary>
/// Creates a <see cref="Texture2D"/> with the specified width, height, <see cref="Format"/>, and <see cref="BindFlags"/>.
/// It uses default values of CpuAccessFlags.None, ResourceOptionFlags.None, and ResourceUsage.Default
/// </summary>
/// <param name="device">The current <see cref="Device"/> being used.</param>
/// <param name="width">The width of the <see cref="Texture2D"/> being created.</param>
/// <param name="height">The height of the <see cref="Texture2D"/> being created.</param>
/// <param name="format">
/// The <see cref="Format"/> of the <see cref="Texture2D"/> being created. The device is queried for support of the given format.
/// If the current hardware doesn't support the format, then a <see cref="NotSupportedException"/> is thrown.
/// </param>
/// <param name="bindFlags">The <see cref="BindFlags"/> of the <see cref="Texture2D"/> being created.</param>
/// <returns>The newly created <see cref="Texture2D"/> object.</returns>
public static Texture2D CreateTexture2D(Device device, int width, int height, Format format, BindFlags bindFlags)
{
FormatSupport support = device.CheckFormatSupport(format);
if ((support & FormatSupport.Texture2D) != FormatSupport.Texture2D)
{
throw new NotSupportedException("The given format (" + format.ToString() + ") is not supported as a Texture2D on this GPU.");
}
Texture2DDescription texDesc = new Texture2DDescription();
texDesc.ArraySize = 1;
texDesc.BindFlags = bindFlags;
texDesc.CpuAccessFlags = CpuAccessFlags.None;
texDesc.Format = format;
texDesc.Height = height;
texDesc.MipLevels = 1;
texDesc.OptionFlags = ResourceOptionFlags.None;
texDesc.SampleDescription = new SampleDescription(1, 0);
texDesc.Usage = ResourceUsage.Default;
texDesc.Width = width;
return(new Texture2D(device, texDesc));
}
/// <summary>
/// Checks if a format is supported for a specific usage
/// </summary>
/// <param name="dev">Device to check</param>
/// <param name="usage">Desired format usage</param>
/// <param name="format">Desired format</param>
/// <returns>true if format supported, false otherwise</returns>
public bool IsSupported(Device dev, FormatSupport usage, Format format)
{
FormatSupport support = dev.CheckFormatSupport(format);
return (support | usage) == support;
}
/// <summary>
/// Checks if a format is supported for a specific usage
/// </summary>
/// <param name="dev">Device to check</param>
/// <param name="usage">Desired format usage</param>
/// <param name="format">Desired format</param>
/// <returns>true if format supported, false otherwise</returns>
public bool IsSupported(Device dev, FormatSupport usage, Format format)
{
FormatSupport support = dev.CheckFormatSupport(format);
return((support | usage) == support);
}
