/// <summary>
/// Loads a texture from a stream.
/// </summary>
/// <param name="device">The <see cref="Direct3D11.Device"/>.</param>
/// <param name="stream">The stream to load the texture from.</param>
/// <param name="flags">Sets the texture flags (for unordered access...etc.)</param>
/// <param name="usage">Usage of the resource. Default is <see cref="ResourceUsage.Immutable"/> </param>
/// <returns>A texture</returns>
public static Texture Load(Direct3D11.Device device, Stream stream, TextureFlags flags = TextureFlags.ShaderResource, ResourceUsage usage = ResourceUsage.Immutable)
{
stream.Position = 0;
var image = Image.Load(stream);
if (image == null)
{
stream.Position = 0;
return(null);
}
try
{
switch (image.Description.Dimension)
{
case TextureDimension.Texture1D:
return(Texture1D.New(device, image, flags, usage));
case TextureDimension.Texture2D:
return(Texture2D.New(device, image, flags, usage));
case TextureDimension.Texture3D:
return(Texture3D.New(device, image, flags, usage));
case TextureDimension.TextureCube:
return(TextureCube.New(device, image, flags, usage));
}
}
finally
{
image.Dispose();
stream.Position = 0;
}
throw new InvalidOperationException("Dimension not supported");
}
/// <summary>
/// Creates a new texture with the specified generic texture description.
/// </summary>
/// <param name="graphicsDevice">The graphics device.</param>
/// <param name="description">The description.</param>
/// <returns>A Texture instance, either a RenderTarget or DepthStencilBuffer or Texture, depending on Binding flags.</returns>
public static Texture New(Direct3D11.Device graphicsDevice, TextureDescription description)
{
if (graphicsDevice == null)
{
throw new ArgumentNullException("graphicsDevice");
}
if ((description.BindFlags & BindFlags.RenderTarget) != 0)
{
throw new NotSupportedException("RenderTarget is not supported.");
}
else if ((description.BindFlags & BindFlags.DepthStencil) != 0)
{
throw new NotSupportedException("DepthStencil is not supported.");
}
else
{
switch (description.Dimension)
{
case TextureDimension.Texture1D:
return(Texture1D.New(graphicsDevice, description));
case TextureDimension.Texture2D:
return(Texture2D.New(graphicsDevice, description));
case TextureDimension.Texture3D:
return(Texture3D.New(graphicsDevice, description));
case TextureDimension.TextureCube:
return(TextureCube.New(graphicsDevice, description));
}
}
return(null);
}
/// <summary>
/// Creates a new <see cref="TextureCube" /> from a initial data..
/// </summary>
/// <typeparam name="T">Type of a pixel data</typeparam>
/// <param name="device">The <see cref="GraphicsDevice"/>.</param>
/// <param name="size">The size (in pixels) of the top-level faces of the cube texture.</param>
/// <param name="format">Describes the format to use.</param>
/// <param name="usage">The usage.</param>
/// <param name="flags">Sets the texture flags (for unordered access...etc.)</param>
/// <param name="textureData">an array of 6 textures. See remarks</param>
/// <returns>A new instance of <see cref="TextureCube" /> class.</returns>
/// <msdn-id>ff476521</msdn-id>
/// <unmanaged>HRESULT ID3D11Device::CreateTexture2D([In] const D3D11_TEXTURE2D_DESC* pDesc,[In, Buffer, Optional] const D3D11_SUBRESOURCE_DATA* pInitialData,[Out, Fast] ID3D11Texture2D** ppTexture2D)</unmanaged>
/// <unmanaged-short>ID3D11Device::CreateTexture2D</unmanaged-short>
/// <remarks>
/// The first dimension of mipMapTextures describes the number of array (TextureCube Array), the second is the texture data for a particular cube face.
/// </remarks>
public unsafe static TextureCube New <T>(GraphicsDevice device, int size, PixelFormat format, T[][] textureData, TextureFlags flags = TextureFlags.ShaderResource, ResourceUsage usage = ResourceUsage.Immutable) where T : struct
{
if (textureData.Length != 6)
{
throw new ArgumentException("Invalid texture data. First dimension must be equal to 6", "textureData");
}
TextureCube cube = null;
Utilities.Pin(textureData[0], ptr1 =>
{
var dataBox1 = GetDataBox(format, size, size, 1, textureData[0], ptr1);
Utilities.Pin(textureData[1], ptr2 =>
{
var dataBox2 = GetDataBox(format, size, size, 1, textureData[0], ptr2);
Utilities.Pin(textureData[2], ptr3 =>
{
var dataBox3 = GetDataBox(format, size, size, 1, textureData[0], ptr3);
Utilities.Pin(textureData[3], ptr4 =>
{
var dataBox4 = GetDataBox(format, size, size, 1, textureData[0], ptr4);
Utilities.Pin(textureData[4], ptr5 =>
{
var dataBox5 = GetDataBox(format, size, size, 1, textureData[0], ptr5);
Utilities.Pin(textureData[5], ptr6 =>
{
var dataBox6 = GetDataBox(format, size, size, 1, textureData[0], ptr6);
cube = new TextureCube(device,
NewTextureCubeDescription(size, format, flags | TextureFlags.ShaderResource, 1, usage),
dataBox1, dataBox2, dataBox3, dataBox4, dataBox5, dataBox6);
});
});
});
});
});
});
return(cube);
}
