/// <summary>load image from disc, set texture and isize as side effect</summary>
internal ImageTex LoadImage(String fileName)
{
//Console.WriteLine("LoadImage using graphicsDevice " + graphicsDevice.GetHashCode());
ImageTex fileImage = new ImageTex(fileName, this);
return(fileImage);
}
/// <summary>image processing render pass on entire image; given multiple input images, technique name, and parms</summary>
public ImageTex Xrender(ImageTex[] inimages, String name, float[] parms)
{
FullTechnique technique = GetTechnique(name, parms);
ImageTex nimage = Xrender(inimages, technique);
return(nimage);
}
/// <summary>Perform n sequential direct copies of image, mainly used for timing tests</summary>
public ImageTex dd(int n)
{
ImageTex r = this;
for (int i = 0; i < n; i++)
{
r = r.Xrender("dir");
}
return(r);
}
/// <summary>Apply unsharp mask to image, with given radius, strength and threshold</summary>
public ImageTex Unsharp(double r, double strength, double threshold)
{
int K = (int)Math.Ceiling(r);
float[] gauss = Gauss(r);
float[] p = new float[3].Concat(gauss).ToArray();
p[0] = p.Length;
p[1] = (float)strength;
p[2] = (float)threshold;
ImageTex a = effects.Xrender(this, "Unsharp_" + K, p);
return(a);
}
/// <summary>Apply gaussian blur of image: r is radius, allow drop to 0.05 at r</summary>
public ImageTex Blur(double r)
{
if (r < 0)
{
r = 0;
}
int K = (int)Math.Ceiling(r);
float[] gauss = Gauss(r);
float[] p = new float[4].Concat(gauss).ToArray();
p[0] = p.Length;
p[1] = K; p[2] = 0;
p[3] = (float)gauss.Sum();
ImageTex a = effects.Xrender(this, "conv", p);
p[1] = 0; p[2] = K;
return(effects.Xrender(a, "conv", p));
}
/// <summary>image processing render pass on entire image;
/// given multiple input images, technique and transformation matrix and required output size
/// </summary>
internal ImageTex Xrender(ImageTex[] inimage, FullTechnique ftechnique, Matrix tran, int ssizeX, int ssizeY)
{
//*//if (dotime) timer.Start();
EffectTechnique ltechnique = ftechnique.technique;
Effect effect = ftechnique.effect;
RenderTarget2D xxtarget;
NextOp op = inimage[0].nextOpNew; // STD, ALT, SHARE, NEW
int isizeX = inimage[0].Width;
int isizeY = inimage[0].Height;
if (ssizeX == 0)
{
ssizeX = isizeX;
}
if (ssizeY == 0)
{
ssizeY = isizeY;
}
switch (op)
{
case NextOp.STD: xxtarget = xtarget; break;
case NextOp.ALT: xxtarget = xtarget1; break;
case NextOp.SHARE: rtn++; xxtarget = rts[rtn % SIZE]; break;
case NextOp.NEW: xxtarget = null; break;
default: throw new Exception("Unexpected NewOp " + op);
}
SurfaceFormat sf = useVector4 ? SurfaceFormat.Vector4 : graphicsDevice.DisplayMode.Format;
if (xxtarget == null || xxtarget.Width != ssizeX || xxtarget.Height != ssizeY || xxtarget.Format != sf)
{
// programming note: TODO:
// If the xxtarget is not the right size, I can't get things to work.
// Even if it is too big and I cut it down with viewports.
// This reallocation does not seem to matter too much with graphicsDevice.DisplayMode.Format,
// but is a performance problem with SurfaceFormat.Vector4.
// We probably don't need Vector4 too much anyway, but if we do we should cache a few RenderTargets for the case of size changing often
// (this multisize case arises a lot in the scanline test code).
// Console.WriteLine("xxsize " + ssizeX + " " + ssizeY);
xxtarget = new RenderTarget2D(graphicsDevice, ssizeX, ssizeY, 1, sf);
switch (op)
{
case NextOp.STD: xtarget = xxtarget; break;
case NextOp.ALT: xtarget1 = xxtarget; break;
case NextOp.SHARE: rts[rtn % SIZE] = xxtarget; break;
case NextOp.NEW: break;
default: throw new Exception("Unexpected NewOp " + op);
}
}
Viewport savevp = graphicsDevice.Viewport; // this should match the screen size
graphicsDevice.SetRenderTarget(0, xxtarget); // << note that this changes graphicsDevice.Viewport to xxtarget = image size
graphicsDevice.Clear(Microsoft.Xna.Framework.Graphics.Color.Gray); // this processing should often cover entire image, so no need to clear
float h = 0.5f;
//Matrix mat = new Matrix(h, 0, 0, 0, 0, -h, 0, 0, 0, 0, 1, 0, h + h / isizeX, h + h / isizeY, 0, 1);
//Matrix ss0 = new Matrix(1, 0, 0, 0, 0, isizeY * 1.0f / isizeX, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
//Matrix ss1 = new Matrix(1, 0, 0, 0, 0, isizeX * 1.0f / isizeY, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
//mat = mat * ss0 * tran * ss1; // *mat;
Matrix mat = new Matrix(h, 0, 0, 0, 0, -h, 0, 0, 0, 0, 1, 0, h + h / isizeX, h + h / isizeY, 0, 1);
mat = mat * tran; // *mat;
effect.Parameters["TexProj"].SetValue(mat);
effect.Parameters["isize"].SetValue(new Vector2(isizeX, isizeY));
effect.Parameters["stepImageXy"].SetValue(inimage[0].stepImageXy);
ftechnique.SetParameters();
if (inimage.Length >= 1)
{
effect.Parameters["image"].SetValue(inimage[0].texture);
}
if (inimage.Length >= 2)
{
effect.Parameters["image2"].SetValue(inimage[1].texture);
}
if (inimage.Length >= 3)
{
effect.Parameters["image3"].SetValue(inimage[2].texture);
}
if (inimage.Length >= 4)
{
effect.Parameters["image4"].SetValue(inimage[3].texture);
}
RunEffect(effect);
graphicsDevice.SetRenderTarget(0, null); // << note that this changes graphicsDevice.Viewport to (large) backBuffer size
Texture2D result = xxtarget.GetTexture();
graphicsDevice.Viewport = savevp; // restore the back buffer
// ? timer not reliable, work not complete behind the scenes
//*//if (dotime) timer.time(ltechnique.Name);
// TODO: improve fid text
ImageTex r = new ImageTex(inimage[0].fid + ";" + ltechnique, result, this, inimage[0].fileInfo + " " + ftechnique.Name);
// r.Show();
return(r);
}
/// <summary>image processing render pass on entire image; given input image and technique</summary>
public ImageTex Xrender(ImageTex inimage, FullTechnique ltechnique)
{
return(Xrender(new ImageTex[] { inimage }, ltechnique));
}
/// <summary>image processing render pass on entire image; given input image, technique name</summary>
public ImageTex Xrender(ImageTex inimage, String name)
{
return(Xrender(new ImageTex[] { inimage }, name, null));
}
public ImageTex(ImageTex i) : this(i.fid, i.texture, i.effects, i.fileInfo)
{
}
/// <summary>multiply and add four images</summary>
public ImageTex Mad(ImageTex b, ImageTex c, ImageTex d, float fa, float fb, float fc, float fd)
{
return(effects.Xrender(new ImageTex[] { this, b, c, d }, "mad", new float[] { 4, fa, fb, fc, fd }));
}
/// <summary>multiply and add three images</summary>
public ImageTex Mad(ImageTex b, ImageTex c, float fa, float fb, float fc)
{
return(effects.Xrender(new ImageTex[] { this, b, c }, "mad", new float[] { 3, fa, fb, fc, 0 }));
}
/// <summary>multiply and add two images</summary>
public ImageTex Mad(ImageTex b, float fa, float fb)
{
return(effects.Xrender(new ImageTex[] { this, b }, "mad", new float[] { 2, fa, fb, 0, 0 }));
}
/// <summary>Max of two images (pointwise)</summary>
public ImageTex Max(ImageTex b)
{
return(effects.Xrender(new ImageTex[] { this, b }, "max"));
}
/// <summary>Min of two images (pointwise)</summary>
public ImageTex Min(ImageTex b)
{
return(effects.Xrender(new ImageTex[] { this, b }, "min"));
}