SKBitmap FillBitmapByteBuffer(out string description, out int milliseconds)
{
description = "SetPixels byte buffer";
SKBitmap bitmap = new SKBitmap(256, 256);
stopwatch.Restart();
byte[,,] buffer = new byte[256, 256, 4];
for (int rep = 0; rep < REPS; rep++)
{
for (int row = 0; row < 256; row++)
{
for (int col = 0; col < 256; col++)
{
buffer[row, col, 0] = (byte)col; // red
buffer[row, col, 1] = 0; // green
buffer[row, col, 2] = (byte)row; // blue
buffer[row, col, 3] = 0xFF; // alpha
}
}
}
unsafe
{
fixed(byte *ptr = buffer)
{
bitmap.SetPixels((IntPtr)ptr);
}
}
milliseconds = (int)stopwatch.ElapsedMilliseconds;
return(bitmap);
}
private void FillBitmapByteBuffer(ref SKBitmap result)
{
byte[,,] buffer = new byte[_res_y, _res_x, 4];
VectorRGBA pixel;
Ray r;
Vector3 vec;
double u, v;
for (int row = _res_y - 1; row >= 0; row--)
{
for (int col = 0; col < _res_x; col++)
{
u = (double)col / (double)_res_x;
v = (double)row / (double)_res_y;
r = _cam.Get_ray(ref u, ref v, 10000000.0);
vec = Pixel_color(ref r, ref _hlist, 0);
pixel = new VectorRGBA(Math.Sqrt(vec[0]), Math.Sqrt(vec[1]), Math.Sqrt(vec[2]));
buffer[row, col, 0] = (byte)pixel[0]; // red
buffer[row, col, 1] = (byte)pixel[1]; // green
buffer[row, col, 2] = (byte)pixel[2]; // blue
buffer[row, col, 3] = (byte)pixel[3]; // alpha
}
}
unsafe
{
fixed(byte *ptr = buffer)
{
result.SetPixels((IntPtr)ptr);
}
}
}
public static SKBitmap ToSkBitmap(this Mat mat)
{
SKBitmap bitmap;
Mat target = mat;
SKColorType colorType;
switch (mat.NumberOfChannels)
{
case 1:
colorType = SKColorType.Gray8;
break;
case 2:
colorType = SKColorType.Rg1616;
break;
case 3:
CvInvoke.CvtColor(mat, target, ColorConversion.Bgr2Bgra);
colorType = SKColorType.Bgra8888;
break;
case 4:
colorType = SKColorType.Bgra8888;
break;
default:
throw new Exception("Unknown color type");
}
bitmap = new SKBitmap(new SKImageInfo(target.Width, target.Height, colorType));
bitmap.SetPixels(target.DataPointer);
return(bitmap);
}
private static unsafe void Assign(SKBitmap bitmap, IInstruction instruction)
{
fixed(uint *ptr = instruction.Result)
{
bitmap.SetPixels((IntPtr)ptr);
}
}
/// <summary>
/// Converts the library-independent representation of pixels into a bitmap
/// </summary>
/// <param name="pixelData">The library-independent representation of the image</param>
/// <returns>A <c>SKBitmap</c> in Bgra8888 representation</returns>
private static SKBitmap ToSKBitmap(Blurhash.Core.Pixel[,] pixelData)
{
var width = pixelData.GetLength(0);
var height = pixelData.GetLength(1);
var data = Enumerable.Range(0, height)
.SelectMany(y => Enumerable.Range(0, width).Select(x => (x, y)))
.Select(tuple => pixelData[tuple.x, tuple.y])
.SelectMany(pixel => new byte[]
{
(byte)MathUtils.LinearTosRgb(pixel.Blue), (byte)MathUtils.LinearTosRgb(pixel.Green),
(byte)MathUtils.LinearTosRgb(pixel.Red), 255
})
.ToArray();
SKBitmap bitmap = new SKBitmap(width, height, SKColorType.Bgra8888, SKAlphaType.Opaque);
unsafe
{
fixed(byte *ptr = data)
{
bitmap.SetPixels((IntPtr)ptr);
}
}
return(bitmap);
}
SKBitmap FillBitmapUintBufferColor(out string description, out int milliseconds)
{
description = "SetPixels SKColor";
SKBitmap bitmap = new SKBitmap(256, 256);
stopwatch.Restart();
uint[,] buffer = new uint[256, 256];
for (int rep = 0; rep < REPS; rep++)
{
for (int row = 0; row < 256; row++)
{
for (int col = 0; col < 256; col++)
{
buffer[row, col] = (uint)new SKColor((byte)col, 0, (byte)row);
}
}
}
unsafe
{
fixed(uint *ptr = buffer)
{
bitmap.SetPixels((IntPtr)ptr);
}
}
milliseconds = (int)stopwatch.ElapsedMilliseconds;
return(bitmap);
}
public static SKImage GetImage(FTexture2DMipMap inp, string pixel_format)
{
byte[] decoded;
SKColorType color;
switch (pixel_format)
{
case "PF_DXT5":
decoded = DDSImage.DecompressDXT5(inp.data.data, DDSImage.PixelFormat.DXT5, (uint)inp.size_x, (uint)inp.size_y, (uint)inp.size_z);
color = SKColorType.Rgba8888;
break;
case "PF_DXT1":
decoded = DDSImage.DecompressDXT1(inp.data.data, DDSImage.PixelFormat.DXT1, (uint)inp.size_x, (uint)inp.size_y, (uint)inp.size_z);
color = SKColorType.Rgba8888;
break;
case "PF_B8G8R8A8":
decoded = inp.data.data;
color = SKColorType.Bgra8888;
break;
case "PF_BC5":
decoded = DecodeBC5(inp.data.data, inp.size_x, inp.size_y);
color = SKColorType.Rgb888x;
break;
case "PF_BC4":
decoded = DecodeBC4(inp.data.data, inp.size_x, inp.size_y);
color = SKColorType.Rgb888x;
break;
case "PF_G8":
decoded = inp.data.data;
color = SKColorType.Gray8;
break;
case "PF_FloatRGBA":
decoded = inp.data.data;
color = SKColorType.RgbaF16;
break;
default:
throw new IOException("Unknown image type: " + pixel_format);
}
var info = new SKImageInfo(inp.size_x, inp.size_y, color, SKAlphaType.Unpremul);
using (SKBitmap bitmap = new SKBitmap(info))
{
unsafe
{
fixed(byte *p = decoded)
{
bitmap.SetPixels(new IntPtr(p));
}
}
return(SKImage.FromBitmap(bitmap));
}
}
public static SKImage DecodeImage(byte[] sequence, int width, int height, int depth, EPixelFormat format)
{
byte[] data;
SKColorType colorType;
switch (format)
{
case EPixelFormat.PF_DXT5:
data = DXTDecoder.DecodeDXT5(sequence, width, height, depth);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_DXT1:
data = DXTDecoder.DecodeDXT1(sequence, width, height, depth);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_B8G8R8A8:
data = sequence;
colorType = SKColorType.Bgra8888;
break;
case EPixelFormat.PF_BC5:
data = BCDecoder.DecodeBC5(sequence, width, height);
colorType = SKColorType.Bgra8888;
break;
case EPixelFormat.PF_BC4:
data = BCDecoder.DecodeBC4(sequence, width, height);
colorType = SKColorType.Bgra8888;
break;
case EPixelFormat.PF_G8:
data = sequence;
colorType = SKColorType.Gray8;
break;
case EPixelFormat.PF_FloatRGBA:
data = sequence;
colorType = SKColorType.RgbaF16;
break;
default:
throw new NotImplementedException($"Cannot decode {format} format");
}
using (var bitmap = new SKBitmap(new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul)))
{
unsafe
{
fixed(byte *p = data)
{
bitmap.SetPixels(new IntPtr(p));
}
}
return(SKImage.FromBitmap(bitmap));
}
}
public static SKBitmap CreateBitmapFromPixels(int[] pixelData, int width, int height)
{
var bmp = new SKBitmap(width, height, SKColorType.Rgba8888, SKAlphaType.Premul);
GCHandle pinnedArray = GCHandle.Alloc(pixelData, GCHandleType.Pinned);
IntPtr pointer = pinnedArray.AddrOfPinnedObject();
bmp.SetPixels(pointer);
pinnedArray.Free();
return(bmp);
}
public static SKImage?Decode(this UTexture2D texture)
{
if (!texture.IsVirtual && texture.GetFirstMip() is { } mip)
{
DecodeTexture(mip, texture.Format, out byte[] data, out var colorType);
using var bitmap = new SKBitmap(new SKImageInfo(mip.SizeX, mip.SizeY, colorType, SKAlphaType.Unpremul));
unsafe
{
fixed(byte *p = data)
{
bitmap.SetPixels(new IntPtr(p));
}
}
return(SKImage.FromBitmap(bitmap));
}
return(null);
}
public static SkiaGraphics FromImage(Bitmap bmp)
{
var ans = new SkiaGraphics();
var data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite,
PixelFormat.Format32bppArgb);
SKBitmap bm =
new SKBitmap(new SKImageInfo(bmp.Width, bmp.Height, SKColorType.Bgra8888, SKAlphaType.Premul),
bmp.Width * 4);
bm.SetPixels(data.Scan0);
ans._surface = SKSurface.Create(bm.Info, data.Scan0, bmp.Width * 4);
bmp.UnlockBits(data);
return(ans);
}
public void DrawImage(Image img, long i, long i1, long width, long height)
{
var data = ((Bitmap)img).LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
using (var skbmp = new SKBitmap(new SKImageInfo(img.Width, img.Height, SKColorType.Bgra8888)))
{
skbmp.SetPixels(data.Scan0);
//skbmp.InstallPixels(new SKPixmap(skbmp.Info, data.Scan0));
_image.DrawBitmap(skbmp, new SKRect(i, i1, i + width, i1 + height), _paint);
}
((Bitmap)img).UnlockBits(data);
data = null;
}
private void OnPaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
var canvas = e.Surface.Canvas;
var bitmap = new SKBitmap(256, 240);
unsafe
{
fixed(int *framePointer = _frameBuffer)
{
bitmap.SetPixels((IntPtr)framePointer);
}
}
var b = bitmap.Resize(new SKImageInfo(e.Info.Width, e.Info.Height), SKFilterQuality.None);
canvas.DrawBitmap(b, SKPoint.Empty);
canvas.Flush();
}
public static SKImage?Decode(this UTexture2D texture, bool bNearest = false)
{
if (!texture.IsVirtual && texture.GetFirstMip() is { } mip)
{
DecodeTexture(mip, texture.Format, out byte[] data, out var colorType);
var width = mip.SizeX;
var height = mip.SizeY;
using var bitmap = new SKBitmap(new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul));
unsafe
{
fixed(byte *p = data)
{
bitmap.SetPixels(new IntPtr(p));
}
}
return(SKImage.FromBitmap(!bNearest ? bitmap : bitmap.Resize(new SKImageInfo(width, height), SKFilterQuality.None)));
}
return(null);
}
public void DrawImage(Image img, long i, long i1, long width, long height)
{
((Bitmap)img).MakeTransparent(Color.Transparent);
var data = ((Bitmap)img).LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
using (var skbmp = new SKBitmap(new SKImageInfo(img.Width, img.Height, SKColorType.Bgra8888, SKAlphaType.Unpremul)))
{
skbmp.SetPixels(data.Scan0);
//skbmp.InstallPixels(new SKPixmap(skbmp.Info, data.Scan0));
_paint.BlendMode = SKBlendMode.SrcOver;
//_paint.ColorFilter = SKColorFilter.CreateBlendMode(SKColors.Transparent, SKBlendMode.SrcOver);
_image.DrawBitmap(skbmp, new SKRect(i, i1, i + width, i1 + height), _paint);
}
((Bitmap)img).UnlockBits(data);
data = null;
}
public Bitmap(int width, int height, int stride, PixelFormat bgra8888 = Imaging.PixelFormat.Format32bppArgb,
IntPtr data = default(IntPtr))
{
nativeSkBitmap = new SKBitmap(new SKImageInfo(width, height, SKColorType.Bgra8888));
nativeSkBitmap.SetPixels(data);
}
public Bitmap(int width, int height, int stride, SKColorType bgra8888 = (SKColorType.Bgra8888),
IntPtr data = default(IntPtr))
{
nativeSkBitmap = new SKBitmap(new SKImageInfo(width, height, bgra8888));
nativeSkBitmap.SetPixels(data);
}
public static SKImage DecodeImage(byte[] sequence, int width, int height, int depth, EPixelFormat format)
{
byte[] data;
SKColorType colorType;
switch (format)
{
case EPixelFormat.PF_DXT5:
data = DXTDecoder.DecodeDXT5(sequence, width, height, depth);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_DXT1:
data = DXTDecoder.DecodeDXT1(sequence, width, height, depth);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_ASTC_8x8:
var x = (int)TextureFormatHelper.GetBlockWidth(format);
var y = (int)TextureFormatHelper.GetBlockHeight(format);
var z = (int)TextureFormatHelper.GetBlockDepth(format);
data = ASTCDecoder.DecodeToRGBA8888(sequence, x, y, z, width, height, 1);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_B8G8R8A8:
data = sequence;
colorType = SKColorType.Bgra8888;
break;
case EPixelFormat.PF_BC5:
data = BCDecoder.DecodeBC5(sequence, width, height);
colorType = SKColorType.Rgb888x;
break;
case EPixelFormat.PF_BC4:
data = BCDecoder.DecodeBC4(sequence, width, height);
colorType = SKColorType.Rgb888x;
break;
case EPixelFormat.PF_G8:
data = sequence;
colorType = SKColorType.Gray8;
break;
case EPixelFormat.PF_FloatRGBA:
data = sequence;
colorType = SKColorType.RgbaF16;
break;
case EPixelFormat.PF_BC7:
data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_BPTC,
outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
colorType = SKColorType.Rgb888x;
break;
case EPixelFormat.PF_BC6H:
data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: true,
inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_BPTC_FLOAT,
outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBX8); // Not sure whether that works, would actually be DETEX_PIXEL_FORMAT_FLOAT_RGBX32
data = Detex.DecodeBC6H(sequence, width, height);
colorType = SKColorType.Rgb888x;
break;
case EPixelFormat.PF_ETC1:
data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC1,
outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_ETC2_RGB:
data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC2,
outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
colorType = SKColorType.Rgba8888;
break;
case EPixelFormat.PF_ETC2_RGBA:
data = Detex.DecodeDetexLinear(sequence, width, height, isFloat: false,
inputFormat: DetexTextureFormat.DETEX_TEXTURE_FORMAT_ETC2_EAC,
outputPixelFormat: DetexPixelFormat.DETEX_PIXEL_FORMAT_RGBA8);
colorType = SKColorType.Rgba8888;
break;
default:
throw new NotImplementedException($"Cannot decode {format} format");
}
using var bitmap = new SKBitmap(new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul));
unsafe
{
fixed(byte *p = data)
{
bitmap.SetPixels(new IntPtr(p));
}
}
return(SKImage.FromBitmap(bitmap));
}
private unsafe SKImage ProjectFisheye(SKPoint centerPoint, float radius, float radians)
{
var srcInfo = new SKImageInfo(_image.Width, _image.Height, SKImageInfo.PlatformColorType, SKAlphaType.Unpremul);
// rows, columns, 4byte color
var srcData = new byte[_image.Height, _image.Width, 4];
fixed(byte *ptr = srcData)
{
if (!_image.ReadPixels(srcInfo, new IntPtr(ptr), _image.Width * 4, 0, 0))
{
return(null);
}
}
var dstWidth = (int)Math.Floor(2 * radius);
var dstHeight = dstWidth / 2;
var rows = dstHeight;
var columns = dstWidth;
// rows, columns, 4byte color
var dstData = new byte[rows, columns, 4];
for (var row = 0; row < rows; row++)
{
for (var column = 0; column < columns; column++)
{
// normalize x, y to equirectangular space
var dstWidthHalf = dstWidth / 2.0;
var dstHeightHalf = dstHeight / 2.0;
var equirectX = -1 * (column - dstWidthHalf) / dstWidthHalf;
var equirectY = -1 * (row - dstHeightHalf) / dstHeightHalf;
// long/lat
var longitude = equirectX * Math.PI;
var latitude = equirectY * Math.PI / 2;
// 3D projection
var pX = Math.Cos(latitude) * Math.Cos(longitude);
var pY = Math.Cos(latitude) * Math.Sin(longitude);
var pZ = Math.Sin(latitude);
// fish eye normalized coords
var r = 2 * Math.Atan2(Math.Sqrt(Math.Pow(pX, 2) + Math.Pow(pZ, 2)), pY) / (202 * Math.PI / 180); // 202 degrees aperture for ricoh theta s
var theta = Math.Atan2(pZ, pX);
var unitCirclePoint = new SKPoint((float)(r * Math.Cos(theta)), (float)(r * Math.Sin(theta)));
if (Math.Abs(unitCirclePoint.X) > 1 || Math.Abs(unitCirclePoint.Y) > 1)
{
continue;
}
// compensate for rotation of fish eye
var matrix = SKMatrix.MakeRotation(radians);
unitCirclePoint = matrix.MapPoint(unitCirclePoint);
// fisheye normalized coords to src image space.
var srcX = (int)Math.Floor(centerPoint.X + unitCirclePoint.X * radius);
var srcY = (int)Math.Floor(centerPoint.Y - unitCirclePoint.Y * radius);
// clamp to image bounds
if (srcX < 0 || srcX >= _image.Width || srcY < 0 || srcY >= _image.Height)
{
continue;
}
// y, x flipped cause doing row column
var b = srcData[srcY, srcX, 0];
var g = srcData[srcY, srcX, 1];
var red = srcData[srcY, srcX, 2];
var a = srcData[srcY, srcX, 3];
dstData[row, column, 0] = b;
dstData[row, column, 1] = g;
dstData[row, column, 2] = red;
dstData[row, column, 3] = a;
}
}
var surface = SKSurface.Create(new SKImageInfo(dstWidth, dstHeight));
surface.Canvas.Clear(SKColors.DarkSlateGray);
var dstBitmap = new SKBitmap(dstWidth, dstHeight);
fixed(byte *ptr = dstData)
{
dstBitmap.SetPixels((IntPtr)ptr);
}
surface.Canvas.DrawBitmap(dstBitmap, 0, 0);
return(surface.Snapshot());
}
public void DrawImage(Image img, Rectangle rectangle, float srcX, float srcY, float srcWidth, float srcHeight,
GraphicsUnit graphicsUnit, ImageAttributes tileFlipXYAttributes)
{
var coltype = SKColorType.Bgra8888;
((Bitmap)img).MakeTransparent(Color.Transparent);
var data = ((Bitmap)img).LockBits(new Rectangle(0, 0, img.Width, img.Height),
ImageLockMode.ReadOnly,
SKColorType.Bgra8888);
if (CompositingMode == CompositingMode.SourceOver)
{
_paint.BlendMode = SKBlendMode.SrcOver;
}
if (CompositingMode == CompositingMode.SourceCopy)
{
_paint.BlendMode = SKBlendMode.Src;
}
//if(img.PixelFormat == PixelFormat.Format32bppArgb)
_paint.Color = SKColors.Black;
var imginfo = new SKImageInfo(img.Width, img.Height, coltype, SKAlphaType.Premul);
var pxmap = new SKPixmap(imginfo, data.Scan0, data.Stride);
var image = SKImage.FromPixels(pxmap);
if (image == null)
{
return;
}
_image.DrawImage(image, new SKRect(srcX, srcY, srcX + srcWidth, srcY + srcHeight),
new SKRect(rectangle.X, rectangle.Y, rectangle.Right, rectangle.Bottom), _paint);
((Bitmap)img).UnlockBits(data);
data = null;
return;
try
{
using (var skbmp =
new SKBitmap(new SKImageInfo(img.Width, img.Height, coltype, SKAlphaType.Unpremul)))
{
skbmp.SetPixels(data.Scan0);
_image.DrawBitmap(skbmp, new SKRect(srcX, srcY, srcX + srcWidth, srcY + srcHeight),
new SKRect(rectangle.X, rectangle.Y, rectangle.Right, rectangle.Bottom), _paint);
}
}
catch
{
}
((Bitmap)img).UnlockBits(data);
data = null;
}
public SkiaBitmap(int width, int height, int stride, PixelFormat format, IntPtr scan0)
{
_bitmap = new SKBitmap(width, height, colorType: format.ToSKColorType(), alphaType: SKAlphaType.Premul);
_bitmap.SetPixels(scan0);
}
