void GetImagaDataFromPath (string path)
{
int width, height;
NSImage src;
CGImage image;
CGContext context = null;
RectangleF rect = RectangleF.Empty;
data = new byte[TEXTURE_WIDTH * TEXTURE_HEIGHT * 4];
src = new NSImage (path);
image = src.AsCGImage (ref rect, null, null);
width = image.Width;
height = image.Height;
CGImageAlphaInfo ai = CGImageAlphaInfo.PremultipliedLast;
context = new CGBitmapContext (data, width, height, 8, 4 * width, image.ColorSpace, ai);
// Core Graphics referential is upside-down compared to OpenGL referential
// Flip the Core Graphics context here
// An alternative is to use flipped OpenGL texture coordinates when drawing textures
context.TranslateCTM (0, height);
context.ScaleCTM (1, -1);
// Set the blend mode to copy before drawing since the previous contents of memory aren't used.
// This avoids unnecessary blending.
context.SetBlendMode (CGBlendMode.Copy);
context.DrawImage (new RectangleF (0, 0, width, height), image);
}
public override object CreateImageBuilder (int width, int height, ImageFormat format)
{
var flags = CGBitmapFlags.ByteOrderDefault;
int bytesPerRow;
switch (format) {
case ImageFormat.ARGB32:
bytesPerRow = width * 4;
flags |= CGBitmapFlags.PremultipliedFirst;
break;
case ImageFormat.RGB24:
bytesPerRow = width * 3;
flags |= CGBitmapFlags.None;
break;
default:
throw new NotImplementedException ("ImageFormat: " + format.ToString ());
}
var bmp = new CGBitmapContext (IntPtr.Zero, width, height, 8, bytesPerRow, Util.DeviceRGBColorSpace, flags);
bmp.TranslateCTM (0, height);
bmp.ScaleCTM (1, -1);
return new CGContextBackend {
Context = bmp,
Size = new CGSize (width, height),
InverseViewTransform = bmp.GetCTM ().Invert ()
};
}
void GetImagaDataFromPath (string path)
{
NSImage src;
CGImage image;
CGContext context = null;
src = new NSImage (path);
image = src.AsCGImage (RectangleF.Empty, null, null);
width = image.Width;
height = image.Height;
int bytesPerRow = image.BytesPerRow;
int bitsPerPixel = image.BitsPerPixel;
int bitsPerComponent = image.BitsPerComponent;
data = new byte[bytesPerRow * height * 4];
CGImageAlphaInfo ai = CGImageAlphaInfo.PremultipliedLast;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
context = new CGBitmapContext (data, width, height, 8, 4 * width, colorSpace, ai);
// Core Graphics referential is upside-down compared to OpenGL referential
// Flip the Core Graphics context here
// An alternative is to use flipped OpenGL texture coordinates when drawing textures
context.TranslateCTM (0, height);
context.ScaleCTM (1, -1);
// Set the blend mode to copy before drawing since the previous contents of memory aren't used.
// This avoids unnecessary blending.
context.SetBlendMode (CGBlendMode.Copy);
context.DrawImage (new RectangleF (0, 0, width, height), image);
}
private void InitWithCGImage(CGImage image, All filter)
{
int width, height, i;
CGContext context = null;
IntPtr data;
CGColorSpace colorSpace;
IntPtr tempData;
bool hasAlpha;
CGImageAlphaInfo info;
CGAffineTransform transform;
Size imageSize;
SurfaceFormat pixelFormat;
//bool sizeToFit = false;
if (image == null) {
throw new ArgumentException (" NSImage is invalid! " );
}
info = image.AlphaInfo;
hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First) ? true : false);
if (image.ColorSpace != null) {
if (hasAlpha) {
pixelFormat = SurfaceFormat.Color;
} else {
pixelFormat = SurfaceFormat.Color;
}
} else {
pixelFormat = SurfaceFormat.Alpha8;
}
imageSize = new Size (image.Width,image.Height);
transform = CGAffineTransform.MakeIdentity ();
width = imageSize.Width;
// Take out the width and height adjustments for power of 2
// If not then GetData and SetData is messed up.
// The Mac opengl version supports non power of 2 textures
// so we do not have to make them so
// if ((width != 1) && ((width & (width - 1)) != 0)) {
// i = 1;
// while ((sizeToFit ? 2 * i : i) < width)
// i *= 2;
// width = i;
// }
height = imageSize.Height;
// The Mac opengl version supports non power of 2 textures
// so we do not have to make them so
// if ((height != 1) && ((height & (height - 1)) != 0)) {
// i = 1;
// while ((sizeToFit ? 2 * i : i) < height)
// i *= 2;
// height = i;
// }
// TODO: kMaxTextureSize = 1024
// while ((width > 1024) || (height > 1024)) {
// width /= 2;
// height /= 2;
// transform = CGAffineTransform.MakeScale (0.5f, 0.5f);
// imageSize.Width /= 2;
// imageSize.Height /= 2;
// }
float size = Math.Max(width,height);
if(size > 1024)
{
float ratio = 1024 / size;
width = (int)(width * ratio);
height = (int)(height * ratio);
transform = CGAffineTransform.MakeScale(ratio, ratio);
imageSize.Width = (int)(imageSize.Width * ratio);
imageSize.Height = (int)(imageSize.Height * ratio);;
}
switch (pixelFormat) {
case SurfaceFormat.Color:
colorSpace = CGColorSpace.CreateDeviceRGB ();
data = Marshal.AllocHGlobal (height * width * 4);
context = new CGBitmapContext (data, width, height, 8, 4 * width, colorSpace,CGImageAlphaInfo.PremultipliedLast);
colorSpace.Dispose ();
break;
case SurfaceFormat.Alpha8:
data = Marshal.AllocHGlobal (height * width);
context = new CGBitmapContext (data, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException ("Invalid pixel format");
}
context.ClearRect (new RectangleF (0,0,width,height));
context.TranslateCTM (0, height - imageSize.Height);
if (!transform.IsIdentity) {
context.ConcatCTM (transform);
}
context.DrawImage (new RectangleF (0, 0, image.Width, image.Height), image);
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
/*
if(pixelFormat == SurfaceFormat.Rgb32) {
tempData = Marshal.AllocHGlobal(height * width * 2);
int d32;
short d16;
int inPixel32Count=0,outPixel16Count=0;
for(i = 0; i < width * height; ++i, inPixel32Count+=sizeof(int))
{
d32 = Marshal.ReadInt32(data,inPixel32Count);
short R = (short)((((d32 >> 0) & 0xFF) >> 3) << 11);
short G = (short)((((d32 >> 8) & 0xFF) >> 2) << 5);
short B = (short)((((d32 >> 16) & 0xFF) >> 3) << 0);
d16 = (short) (R | G | B);
Marshal.WriteInt16(tempData,outPixel16Count,d16);
outPixel16Count += sizeof(short);
}
Marshal.FreeHGlobal(data);
data = tempData;
}
*/
InitWithData (data, pixelFormat, width, height, imageSize, filter);
context.Dispose ();
Marshal.FreeHGlobal (data);
}
public override object ConvertToBitmap(object handle, double width, double height, double scaleFactor, ImageFormat format)
{
int pixelWidth = (int)(width * scaleFactor);
int pixelHeight = (int)(height * scaleFactor);
if (handle is CustomImage) {
var flags = CGBitmapFlags.ByteOrderDefault;
int bytesPerRow;
switch (format) {
case ImageFormat.ARGB32:
bytesPerRow = pixelWidth * 4;
flags |= CGBitmapFlags.PremultipliedFirst;
break;
case ImageFormat.RGB24:
bytesPerRow = pixelWidth * 3;
flags |= CGBitmapFlags.None;
break;
default:
throw new NotImplementedException ("ImageFormat: " + format.ToString ());
}
var bmp = new CGBitmapContext (IntPtr.Zero, pixelWidth, pixelHeight, 8, bytesPerRow, Util.DeviceRGBColorSpace, flags);
bmp.TranslateCTM (0, pixelHeight);
bmp.ScaleCTM ((float)scaleFactor, (float)-scaleFactor);
var ctx = new CGContextBackend {
Context = bmp,
Size = new SizeF ((float)width, (float)height),
InverseViewTransform = bmp.GetCTM ().Invert (),
ScaleFactor = scaleFactor
};
var ci = (CustomImage)handle;
ci.DrawInContext (ctx);
var img = new NSImage (((CGBitmapContext)bmp).ToImage (), new SizeF (pixelWidth, pixelHeight));
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
im.Size = new SizeF ((float)width, (float)height);
bmp.Dispose ();
return im;
}
else {
NSImage img = (NSImage)handle;
NSBitmapImageRep bitmap = img.Representations ().OfType<NSBitmapImageRep> ().FirstOrDefault ();
if (bitmap == null) {
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep)NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
im.Size = new SizeF ((float)width, (float)height);
return im;
}
return handle;
}
}
private void InitWithCGImage (CGImage image, All filter)
{
int width, height, i;
CGContext context = null;
IntPtr data;
CGColorSpace colorSpace;
IntPtr tempData;
bool hasAlpha;
CGImageAlphaInfo info;
CGAffineTransform transform;
Size imageSize;
SurfaceFormat pixelFormat;
bool sizeToFit = false;
if (image == null) {
throw new ArgumentException (" NSImage is invalid! " );
}
info = image.AlphaInfo;
hasAlpha = ((info == CGImageAlphaInfo.PremultipliedLast) || (info == CGImageAlphaInfo.PremultipliedFirst) || (info == CGImageAlphaInfo.Last) || (info == CGImageAlphaInfo.First) ? true : false);
if (image.ColorSpace != null) {
if (hasAlpha) {
pixelFormat = SurfaceFormat.Rgba32;
} else {
pixelFormat = SurfaceFormat.Rgb32;
}
} else {
pixelFormat = SurfaceFormat.Alpha8;
}
imageSize = new Size (image.Width,image.Height);
transform = CGAffineTransform.MakeIdentity ();
width = imageSize.Width;
if ((width != 1) && ((width & (width - 1)) != 0)) {
i = 1;
while ((sizeToFit ? 2 * i : i) < width)
i *= 2;
width = i;
}
height = imageSize.Height;
if ((height != 1) && ((height & (height - 1)) != 0)) {
i = 1;
while ((sizeToFit ? 2 * i : i) < height)
i *= 2;
height = i;
}
// TODO: kMaxTextureSize = 1024
while ((width > 1024) || (height > 1024)) {
width /= 2;
height /= 2;
transform = CGAffineTransform.MakeScale (0.5f, 0.5f);
imageSize.Width /= 2;
imageSize.Height /= 2;
}
switch (pixelFormat) {
case SurfaceFormat.Rgba32:
colorSpace = CGColorSpace.CreateDeviceRGB ();
data = Marshal.AllocHGlobal (height * width * 4);
context = new CGBitmapContext (data, width, height, 8, 4 * width, colorSpace,CGImageAlphaInfo.PremultipliedLast);
colorSpace.Dispose ();
break;
case SurfaceFormat.Rgb32:
colorSpace = CGColorSpace.CreateDeviceRGB ();
data = Marshal.AllocHGlobal (height * width * 4);
context = new CGBitmapContext (data, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.NoneSkipLast);
colorSpace.Dispose ();
break;
case SurfaceFormat.Alpha8:
data = Marshal.AllocHGlobal (height * width);
context = new CGBitmapContext (data, width, height, 8, width, null, CGImageAlphaInfo.Only);
break;
default:
throw new NotSupportedException ("Invalid pixel format");
}
context.ClearRect (new RectangleF (0,0,width,height));
context.TranslateCTM (0, height - imageSize.Height);
if (!transform.IsIdentity) {
context.ConcatCTM (transform);
}
context.DrawImage (new RectangleF (0, 0, image.Width, image.Height), image);
//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
if (pixelFormat == SurfaceFormat.Rgb32) {
tempData = Marshal.AllocHGlobal (height * width * 2);
int d32;
short d16;
int inPixel32Count = 0, outPixel16Count=0;
for (i = 0; i < width * height; ++i, inPixel32Count+=sizeof(int)) {
d32 = Marshal.ReadInt32 (data, inPixel32Count);
short R = (short)((((d32 >> 0) & 0xFF) >> 3) << 11);
short G = (short)((((d32 >> 8) & 0xFF) >> 2) << 5);
short B = (short)((((d32 >> 16) & 0xFF) >> 3) << 0);
d16 = (short)(R | G | B);
Marshal.WriteInt16 (tempData, outPixel16Count, d16);
outPixel16Count += sizeof(short);
}
Marshal.FreeHGlobal (data);
data = tempData;
}
InitWithData (data, pixelFormat, width, height, imageSize, filter);
context.Dispose ();
Marshal.FreeHGlobal (data);
}
public override object ConvertToBitmap(object handle, int pixelWidth, int pixelHeight, ImageFormat format)
{
if (handle is CustomImage) {
var flags = CGBitmapFlags.ByteOrderDefault;
int bytesPerRow;
switch (format) {
case ImageFormat.ARGB32:
bytesPerRow = pixelWidth * 4;
flags |= CGBitmapFlags.PremultipliedFirst;
break;
case ImageFormat.RGB24:
bytesPerRow = pixelWidth * 3;
flags |= CGBitmapFlags.None;
break;
default:
throw new NotImplementedException ("ImageFormat: " + format.ToString ());
}
var bmp = new CGBitmapContext (IntPtr.Zero, pixelWidth, pixelHeight, 8, bytesPerRow, Util.DeviceRGBColorSpace, flags);
bmp.TranslateCTM (0, pixelHeight);
bmp.ScaleCTM (1, -1);
var ctx = new CGContextBackend {
Context = bmp,
Size = new SizeF (pixelWidth, pixelHeight),
InverseViewTransform = bmp.GetCTM ().Invert ()
};
var ci = (CustomImage)handle;
ci.DrawInContext (ctx);
var img = new NSImage (((CGBitmapContext)bmp).ToImage (), new SizeF (pixelWidth, pixelHeight));
var imageData = img.AsTiff ();
var imageRep = (NSBitmapImageRep) NSBitmapImageRep.ImageRepFromData (imageData);
var im = new NSImage ();
im.AddRepresentation (imageRep);
return im;
}
else
return handle;
}
