/// <summary>
/// Function to read multiple frames from a decoder that supports multiple frames.
/// </summary>
/// <param name="wic">WIC interface.</param>
/// <param name="data">Image data to populate.</param>
/// <param name="decoder">Decoder for the image.</param>
private void ReadFrames(GorgonWICImage wic, GorgonImageData data, BitmapDecoder decoder)
{
Guid bestPixelFormat = wic.GetGUID(data.Settings.Format);
// Find the best fit pixel format.
if (bestPixelFormat == Guid.Empty)
{
throw new IOException(string.Format(Resources.GORGFX_FORMAT_NOT_SUPPORTED, data.Settings.Format));
}
// Use the image array as the frames.
int arrayCount = _actualArrayCount.Min(data.Settings.ArrayCount);
for (int array = 0; array < arrayCount; array++)
{
var buffer = data.Buffers[0, array];
// Get the frame data.
using (var frame = decoder.GetFrame(array))
{
IntPtr bufferPointer = buffer.Data.BasePointer;
Guid frameFormat = frame.PixelFormat;
int frameWidth = frame.Size.Width;
int frameHeight = frame.Size.Height;
var frameOffset = GetFrameOffset(frame);
// Calculate the pointer offset if we have an offset from the frame. Only offset if we're clipping the image though.
if (((frameOffset.Y != 0) || (frameOffset.X != 0)) && (Clip))
{
bufferPointer = buffer.Data.BasePointer + (frameOffset.Y * buffer.PitchInformation.RowPitch) + (frameOffset.X * (buffer.PitchInformation.RowPitch / buffer.Width));
}
// Confirm that we actually need to perform clipping.
bool needsSizeAdjust = (frameWidth + frameOffset.X > data.Settings.Width) || (frameHeight + frameOffset.Y > data.Settings.Height);
// If the formats match, then we don't need to do conversion.
if (bestPixelFormat == frameFormat)
{
// If the width and height are the same then we can just do a straight copy into the buffer.
if (((frameWidth == data.Settings.Width) && (frameHeight == data.Settings.Height)) || ((!needsSizeAdjust) && (Clip)))
{
frame.CopyPixels(buffer.PitchInformation.RowPitch, bufferPointer, buffer.PitchInformation.SlicePitch);
continue;
}
// We need to scale the image up/down to the size of our image data.
if (!Clip)
{
using (var scaler = new BitmapScaler(wic.Factory))
{
scaler.Initialize(frame, data.Settings.Width, data.Settings.Height, (BitmapInterpolationMode)Filter);
scaler.CopyPixels(buffer.PitchInformation.RowPitch, bufferPointer, buffer.PitchInformation.SlicePitch);
}
continue;
}
using (var clipper = new BitmapClipper(wic.Factory))
{
clipper.Initialize(frame, new Rectangle(0, 0, data.Settings.Width, data.Settings.Height));
clipper.CopyPixels(buffer.PitchInformation.RowPitch, bufferPointer, buffer.PitchInformation.SlicePitch);
}
continue;
}
// Poop. We need to convert this image.
using (var converter = new FormatConverter(wic.Factory))
{
converter.Initialize(frame,
bestPixelFormat,
(BitmapDitherType)Dithering,
null,
0.0,
BitmapPaletteType.Custom);
if (((frameWidth == data.Settings.Width) && (frameHeight == data.Settings.Height)) ||
((!needsSizeAdjust) && (Clip)))
{
converter.CopyPixels(buffer.PitchInformation.RowPitch,
bufferPointer,
buffer.PitchInformation.SlicePitch);
continue;
}
// And we need to scale the image.
if (!Clip)
{
using (var scaler = new BitmapScaler(wic.Factory))
{
scaler.Initialize(converter,
data.Settings.Width,
data.Settings.Height,
(BitmapInterpolationMode)Filter);
scaler.CopyPixels(buffer.PitchInformation.RowPitch,
bufferPointer,
buffer.PitchInformation.SlicePitch);
}
continue;
}
using (var clipper = new BitmapClipper(wic.Factory))
{
clipper.Initialize(frame,
new Rectangle(0, 0, data.Settings.Width, data.Settings.Height));
clipper.CopyPixels(buffer.PitchInformation.RowPitch,
bufferPointer,
buffer.PitchInformation.SlicePitch);
}
}
}
}
}
private static void LoadTexture(Stream input, out Texture output)
{
if (input == null)
{
output = null;
return;
}
var magic = new byte[4];
input.Read(magic, 0, 4);
input.Position = 0;
var a = (char)magic[0];
var b = (char)magic[1];
var c = (char)magic[2];
var d = (char)magic[3];
if (VisualC.CompareMemory(magic, DDSImage.MagicBytes, 4) == 0)
{
var test = new DDSImage(input);
output = new Texture(test.Texture2D)
{
Name = "Cubemap (DDS)"
};
return;
}
var faces = new DataRectangle[6];
using (var decoder = new BitmapDecoder(Renderer.ImagingFactory, input, DecodeOptions.CacheOnDemand))
{
var frame = decoder.GetFrame(0);
var converter = new FormatConverter(Renderer.ImagingFactory);
converter.Initialize(
frame,
PixelFormat.Format32bppPRGBA,
BitmapDitherType.None, null,
0.0, BitmapPaletteType.Custom);
var width = frame.Size.Width;
var height = frame.Size.Height;
var ratio = width / (float)height;
if (Math.Abs(ratio - 2) < 0.001) // panorama
{
throw new NotImplementedException();
}
if (Math.Abs(ratio - 1.333f) < 0.001) // cubic
{
var tileDim = (int)(width / 4f);
var stride = tileDim * 4;
Action <int, int, int> loadFace = delegate(int index, int coordX, int coordY)
{
var faceStream = new DataStream(tileDim * stride, false, true);
using (var crop = new BitmapClipper(Renderer.ImagingFactory))
{
crop.Initialize(converter, new RawBox(coordX, coordY, tileDim, tileDim));
crop.CopyPixels(stride, faceStream);
}
faces[index] = new DataRectangle(faceStream.DataPointer, stride);
};
loadFace(0, tileDim * 2, tileDim);
loadFace(1, 0, tileDim);
loadFace(2, tileDim, 0);
loadFace(3, tileDim, tileDim * 2);
loadFace(4, tileDim, tileDim);
loadFace(5, tileDim * 3, tileDim);
var texture2D = new Texture2D(Renderer.Device, new Texture2DDescription
{
Width = tileDim,
Height = tileDim,
ArraySize = 6,
BindFlags = BindFlags.ShaderResource,
Usage = ResourceUsage.Immutable,
CpuAccessFlags = CpuAccessFlags.None,
Format = Format.R8G8B8A8_UNorm,
MipLevels = 1,
OptionFlags = ResourceOptionFlags.TextureCube,
SampleDescription = new SampleDescription(1, 0)
}, faces);
converter.Dispose();
output = new Texture(texture2D);
output.Name = output.NativeTexture.Tag.ToString();
}
else
{
throw new NotImplementedException();
}
}
}
