/// <summary>
/// Creates a Direct 3D 11 textured based off the top mip of this Texture2D export
/// </summary>
/// <param name="device">Device to render texture from/to ?</param>
/// <param name="description">Direct3D description of the texture</param>
/// <returns></returns>
public static SharpDX.Direct3D11.Texture2D generatePreviewTexture(this Texture2D t2d, SharpDX.Direct3D11.Device device, out SharpDX.Direct3D11.Texture2DDescription description, Texture2DMipInfo info = null, byte[] imageBytes = null)
{
if (info == null)
{
info = new Texture2DMipInfo();
info = t2d.Mips.FirstOrDefault(x => x.storageType != StorageTypes.empty);
}
if (info == null)
{
description = new SharpDX.Direct3D11.Texture2DDescription();
return(null);
}
Debug.WriteLine($"Generating preview texture for Texture2D {info.Export.FullPath} of format {t2d.TextureFormat}");
if (imageBytes == null)
{
imageBytes = t2d.GetImageBytesForMip(info, t2d.Export.Game, true);
}
int width = (int)info.width;
int height = (int)info.height;
var bmp = Image.convertRawToBitmapARGB(imageBytes, info.width, info.height, Image.getPixelFormatType(t2d.TextureFormat));
// Convert compressed image data to an A8R8G8B8 System.Drawing.Bitmap
/* DDSFormat format;
* const Format dxformat = Format.B8G8R8A8_UNorm;
* switch (texFormat)
* {
* case "DXT1":
* format = DDSFormat.DXT1;
* break;
* case "DXT5":
* format = DDSFormat.DXT5;
* break;
* case "V8U8":
* format = DDSFormat.V8U8;
* break;
* case "G8":
* format = DDSFormat.G8;
* break;
* case "A8R8G8B8":
* format = DDSFormat.ARGB;
* break;
* case "NormalMap_HQ":
* format = DDSFormat.ATI2;
* break;
* default:
* throw new FormatException("Unknown texture format: " + texFormat);
* }
*
* byte[] compressedData = extractRawData(info, pccRef);
* Bitmap bmp = DDSImage.ToBitmap(compressedData, format, width, height); */
// Load the decompressed data into an array
System.Drawing.Imaging.BitmapData data = bmp.LockBits(new System.Drawing.Rectangle(0, 0, width, height), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var pixels = new byte[data.Stride * data.Height];
System.Runtime.InteropServices.Marshal.Copy(data.Scan0, pixels, 0, pixels.Length);
bmp.UnlockBits(data);
// Create description of texture
description.Width = width;
description.Height = height;
description.MipLevels = 1;
description.ArraySize = 1;
description.Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm;
description.SampleDescription.Count = 1;
description.SampleDescription.Quality = 0;
description.Usage = SharpDX.Direct3D11.ResourceUsage.Default;
description.BindFlags = SharpDX.Direct3D11.BindFlags.ShaderResource | SharpDX.Direct3D11.BindFlags.RenderTarget;
description.CpuAccessFlags = 0;
description.OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.GenerateMipMaps;
// Set up the texture data
int stride = width * 4;
SharpDX.DataStream ds = new SharpDX.DataStream(height * stride, true, true);
ds.Write(pixels, 0, height * stride);
ds.Position = 0;
// Create texture
SharpDX.Direct3D11.Texture2D tex = new SharpDX.Direct3D11.Texture2D(device, description, new SharpDX.DataRectangle(ds.DataPointer, stride));
ds.Dispose();
return(tex);
}
