public override MappedTexture2D Map(int subResource, MapType map, bool doNotWait)
{
MappedTexture2D m = new MappedTexture2D();
int rowSize = Width * Utils.GetSize(glType) * Utils.GetElements(glClientFormat);
m.RowPitch = rowSize + rowSize % PACK_ALIGNMENT;
if (stagingBuffer == null)
{
if (Description.Options == ResourceOptionFlags.TextureCube)
{
int arrayIndex;
int level;
Texture2DBase.DecoupleSubresource(subResource, MipLevels, out arrayIndex, out level);
GL.BindTexture(All.TextureCubeMap, texture);
GL.ExtGetTexSubImageQCOM(Utils.GetTextureCubeFace(arrayIndex), level, 0, 0, 0, Width, Height, 0, glClientFormat, glType, m.DataPointer);
}
else
{
GL.BindTexture(All.Texture2D, texture);
GL.ExtGetTexSubImageQCOM(All.Texture2D, subResource, 0, 0, 0, Width, Height, 0, glClientFormat, glType, m.DataPointer);
}
}
else
{
handle = GCHandle.Alloc(stagingBuffer, GCHandleType.Pinned);
m.DataPointer = ClrRuntime.Runtime.GetPtr(stagingBuffer, 0);
}
return(m);
}
private static ShaderResourceView LoadFromDecoder(D3DDevice device, ImagingFactory factory, BitmapDecoder bitmapDecoder)
{
if (bitmapDecoder.FrameCount == 0)
{
throw new ArgumentException("Image file successfully loaded, but it has no image frames.");
}
BitmapFrameDecode bitmapFrameDecode = bitmapDecoder.GetFrame(0);
BitmapSource bitmapSource = bitmapFrameDecode.ToBitmapSource();
// create texture description
Texture2DDescription textureDescription = new Texture2DDescription()
{
Width = bitmapSource.Size.Width,
Height = bitmapSource.Size.Height,
MipLevels = 1,
ArraySize = 1,
Format = Format.R8G8B8A8UNorm,
SampleDescription = new SampleDescription()
{
Count = 1,
Quality = 0,
},
Usage = Usage.Dynamic,
BindingOptions = BindingOptions.ShaderResource,
CpuAccessOptions = CpuAccessOptions.Write,
MiscellaneousResourceOptions = MiscellaneousResourceOptions.None
};
// create texture
Texture2D texture = device.CreateTexture2D(textureDescription);
// Create a format converter
FormatConverter converter = factory.CreateFormatConverter();
converter.Initialize(
bitmapSource,
PixelFormats.Prgba32Bpp,
BitmapDitherType.None,
BitmapPaletteType.Custom);
// get bitmap data
byte[] buffer = converter.CopyPixels();
// Copy bitmap data to texture
MappedTexture2D texmap = texture.Map(0, Map.WriteDiscard, Microsoft.WindowsAPICodePack.DirectX.Direct3D10.MapOptions.None);
Marshal.Copy(buffer, 0, texmap.Data, buffer.Length);
texture.Unmap(0);
// create shader resource view description
ShaderResourceViewDescription srvDescription = new ShaderResourceViewDescription()
{
Format = textureDescription.Format,
ViewDimension = ShaderResourceViewDimension.Texture2D,
Texture2D = new Texture2DShaderResourceView()
{
MipLevels = textureDescription.MipLevels,
MostDetailedMip = 0
}
};
// create shader resource view from texture
return(device.CreateShaderResourceView(texture, srvDescription));
}
