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187 lines
6.7 KiB
C#
187 lines
6.7 KiB
C#
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using SharpDX;
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using SharpDX.Direct3D11;
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using SharpDX.WIC;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace CodeWalker.Utils
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{
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public class TextureLoader
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{
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/// <summary>
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/// Loads a bitmap using WIC.
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/// </summary>
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/// <param name="deviceManager"></param>
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/// <param name="filename"></param>
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/// <returns></returns>
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public static BitmapSource LoadBitmap(ImagingFactory2 factory, string filename)
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{
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var bitmapDecoder = new BitmapDecoder(
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factory,
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filename,
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DecodeOptions.CacheOnDemand
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);
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var formatConverter = new FormatConverter(factory);
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formatConverter.Initialize(
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bitmapDecoder.GetFrame(0),
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PixelFormat.Format32bppPRGBA,
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BitmapDitherType.None,
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null,
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0.0,
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BitmapPaletteType.Custom);
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return formatConverter;
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}
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/// <summary>
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/// Creates a <see cref="SharpDX.Direct3D11.Texture2D"/> from a WIC <see cref="SharpDX.WIC.BitmapSource"/>
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/// </summary>
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/// <param name="device">The Direct3D11 device</param>
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/// <param name="bitmapSource">The WIC bitmap source</param>
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/// <returns>A Texture2D</returns>
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public static SharpDX.Direct3D11.Texture2D CreateTexture2DFromBitmap(Device device, SharpDX.WIC.BitmapSource bitmapSource)
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{
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// Allocate DataStream to receive the WIC image pixels
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int stride = bitmapSource.Size.Width * 4;
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using (var buffer = new SharpDX.DataStream(bitmapSource.Size.Height * stride, true, true))
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{
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// Copy the content of the WIC to the buffer
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bitmapSource.CopyPixels(stride, buffer);
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return new Texture2D(device, new Texture2DDescription()
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{
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Width = bitmapSource.Size.Width,
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Height = bitmapSource.Size.Height,
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ArraySize = 1,
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BindFlags = BindFlags.ShaderResource,
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Usage = ResourceUsage.Immutable,
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CpuAccessFlags = CpuAccessFlags.None,
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Format = SharpDX.DXGI.Format.R8G8B8A8_UNorm,
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MipLevels = 1,
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OptionFlags = ResourceOptionFlags.None,
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SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
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}, new SharpDX.DataRectangle(buffer.DataPointer, stride));
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}
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}
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//create a bitmap from a texture2D. DOES NOT WORK
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public static System.Drawing.Bitmap GetTextureBitmap(Device device, Texture2D tex, int mipSlice)
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{
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int w = tex.Description.Width;
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int h = tex.Description.Height;
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var textureCopy = new Texture2D(device, new Texture2DDescription
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{
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Width = w,
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Height = h,
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MipLevels = tex.Description.MipLevels,
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ArraySize = 1,
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Format = SharpDX.DXGI.Format.R8G8B8A8_UNorm,
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Usage = ResourceUsage.Staging,
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SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
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BindFlags = BindFlags.None,
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CpuAccessFlags = CpuAccessFlags.Read,
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OptionFlags = ResourceOptionFlags.None
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});
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DataStream dataStream;// = new DataStream(8 * tex.Description.Width * tex.Description.Height, true, true);
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DeviceContext context = device.ImmediateContext;
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//context.CopyResource(tex, textureCopy);
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context.CopySubresourceRegion(tex, mipSlice, null, textureCopy, 0);
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var dataBox = context.MapSubresource(
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textureCopy,
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mipSlice,
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0,
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MapMode.Read,
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SharpDX.Direct3D11.MapFlags.None,
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out dataStream);
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//int bytesize = w * h * 4;
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//byte[] pixels = new byte[bytesize];
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//dataStream.Read(pixels, 0, bytesize);
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//dataStream.Position = 0;
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var dataRectangle = new DataRectangle
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{
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DataPointer = dataStream.DataPointer,
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Pitch = dataBox.RowPitch
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};
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ImagingFactory wicf = new ImagingFactory();
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var b = new SharpDX.WIC.Bitmap(wicf, w, h, SharpDX.WIC.PixelFormat.Format32bppBGRA, dataRectangle);
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var s = new MemoryStream();
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using (var bitmapEncoder = new PngBitmapEncoder(wicf, s))
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{
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using (var bitmapFrameEncode = new BitmapFrameEncode(bitmapEncoder))
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{
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bitmapFrameEncode.Initialize();
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bitmapFrameEncode.SetSize(b.Size.Width, b.Size.Height);
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var pixelFormat = PixelFormat.FormatDontCare;
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bitmapFrameEncode.SetPixelFormat(ref pixelFormat);
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bitmapFrameEncode.WriteSource(b);
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bitmapFrameEncode.Commit();
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bitmapEncoder.Commit();
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}
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}
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context.UnmapSubresource(textureCopy, 0);
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textureCopy.Dispose();
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b.Dispose();
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s.Position = 0;
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var bmp = new System.Drawing.Bitmap(s);
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//Palette pal = new Palette(wf);
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//b.CopyPalette(pal);
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//byte[] pixels = new byte[w * h * 4];
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//b.CopyPixels(pixels, w * 4);
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//GCHandle handle = GCHandle.Alloc(pixels, GCHandleType.Pinned);
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//var hptr = handle.AddrOfPinnedObject();
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//System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(w, h, w * 4, System.Drawing.Imaging.PixelFormat.Format32bppArgb, hptr);
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//handle.Free();
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//System.Threading.Thread.Sleep(1000);
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//System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(w, h, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
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//System.Drawing.Imaging.BitmapData data = bmp.LockBits(
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// new System.Drawing.Rectangle(System.Drawing.Point.Empty, bmp.Size),
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// System.Drawing.Imaging.ImageLockMode.WriteOnly,
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// System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
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////b.CopyPixels(Int32Rect.Empty, data.Scan0, data.Height * data.Stride, data.Stride);
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//b.CopyPixels(data.Stride, data.Scan0, data.Height * data.Stride);
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//bmp.UnlockBits(data);
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var c1 = bmp.GetPixel(10, 2);
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//dataStream.Dispose();
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return bmp;
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}
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}
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}
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