/// <summary> /// Function to create a <see cref="GorgonTexture2D"/> from a GDI+ bitmap. /// </summary> /// <param name="gdiBitmap">The GDI+ bitmap used to create the texture.</param> /// <param name="graphics">The graphics interface used to create the texture.</param> /// <param name="options">[Optional] Options used to further define the texture.</param> /// <returns>A new <see cref="GorgonTexture2D"/> containing the data from the <paramref name="gdiBitmap"/>.</returns> /// <exception cref="ArgumentNullException">Thrown when the <paramref name="gdiBitmap"/>, or the <paramref name="graphics"/> parameter is <b>null</b>.</exception> /// <remarks> /// <para> /// A GDI+ bitmap is useful to holding image data in memory, but it cannot be sent to the GPU for use as a texture. This method allows an application to convert the GDI+ bitmap into a /// <see cref="GorgonTexture2D"/>. /// </para> /// <para> /// The resulting <see cref="GorgonTexture2D"/> will only contain a single mip level, and single array level. The only image type available will be 2D (i.e. image with a width and height). The GDI+ /// bitmap should have a 32bpp rgba format, or a 24bpp rgb format or else an exception will be thrown. /// </para> /// <para> /// The optional <paramref name="options"/>parameter will define how Gorgon and shaders should handle the texture. The <see cref="GorgonTextureLoadOptions"/> type contains the following: /// <list type="bullet"> /// <item> /// <term>Binding</term> /// <description>When defined, will indicate the <see cref="TextureBinding"/> that defines how the texture will be bound to the graphics pipeline. If it is omitted, then the binding will be /// <see cref="TextureBinding.ShaderResource"/>.</description> /// </item> /// <item> /// <term>Usage</term> /// <description>When defined, will indicate the preferred usage for the texture. If it is omitted, then the usage will be set to <see cref="ResourceUsage.Default"/>.</description> /// </item> /// <item> /// <term>Multisample info</term> /// <description>When defined (i.e. not <b>null</b>), defines the multisampling to apply to the texture. If omitted, then the default is <see cref="GorgonMultisampleInfo.NoMultiSampling"/>.</description> /// </item> /// <item> /// <term>ConvertToPremultipliedAlpha</term> /// <description>Converts the image to premultiplied alpha before uploading the image data to the texture.</description> /// </item> /// </list> /// </para> /// </remarks> public static GorgonTexture2D ToTexture2D(this Bitmap gdiBitmap, GorgonGraphics graphics, GorgonTexture2DLoadOptions options = null) { if (gdiBitmap == null) { throw new ArgumentNullException(nameof(gdiBitmap)); } if (graphics == null) { throw new ArgumentNullException(nameof(graphics)); } if (options == null) { options = _defaultLoadOptions; } if (string.IsNullOrEmpty(options.Name)) { options.Name = GorgonGraphicsResource.GenerateName(GorgonTexture2D.NamePrefix); } using (IGorgonImage image = gdiBitmap.ToGorgonImage()) { if (options.ConvertToPremultipliedAlpha) { image.ConvertToPremultipliedAlpha(); } return(new GorgonTexture2D(graphics, image, options)); } }