/// <summary>
/// Loads a png from the specified stream, optionally with color0=transparent
/// </summary>
Image LoadPNG(GraphicsDevice device, Stream stream, bool color0)
{
pr2.sharppng.Png png = new pr2.sharppng.Png();
PngImageOutput imageOutput = new PngImageOutput(device, color0);
png.read(stream, imageOutput);
return new Image(GameEngine.Game.Device, imageOutput.tex);
}
public void start(pr2.sharppng.Png png)
{
this.png = png;
this.width = png.ihdr.width;
this.height = png.ihdr.height;
intbuf = new int[width * height];
}
LargeImage LoadLargePNG(GraphicsDevice device, Stream stream, bool color0)
{
pr2.sharppng.Png png = new pr2.sharppng.Png();
LargePngImageOutput imageOutput = new LargePngImageOutput(color0);
png.read(stream, imageOutput);
LargeImage ret = new LargeImage();
ret.Width = imageOutput.width;
ret.Height = imageOutput.height;
ret.BlocksWidth = ret.Width / 2048;
if (ret.Width > ret.BlocksWidth * 2048) ret.BlocksWidth++;
ret.BlocksHeight = ret.Height / 2048;
if (ret.Height > ret.BlocksHeight * 2048) ret.BlocksHeight++;
ret.Images = new Image[ret.BlocksWidth, ret.BlocksHeight];
for(int y=0;y<ret.BlocksHeight;y++)
for (int x = 0; x < ret.BlocksWidth; x++)
{
int px = x * 2048;
int py = y * 2048;
int xtodo = ret.Width - px;
if (xtodo > 2048) xtodo = 2048;
int ytodo = ret.Height - py;
if (ytodo > 2048) ytodo = 2048;
int[] intbuf = new int[xtodo*ytodo];
for(int qy=0,ctr=0;qy<ytodo;qy++)
for (int qx = 0; qx < xtodo; qx++,ctr++)
{
intbuf[ctr] = imageOutput.intbuf[(py + qy) * ret.Width + px + qx];
}
var tex = new Texture2D(device, xtodo, ytodo, false, SurfaceFormat.Color);
tex.SetData(intbuf);
ret.Images[x, y] = new Image(GameEngine.Game.Device, tex);
}
//return new Image(GameEngine.Game.Device, imageOutput.tex);
return ret;
}