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Implemented efficient FFI versions of ImageData methods.

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Note that ImageData:mapPixel (with its optional sub-rectangle parameters) is often many times faster than a loop of ImageData:setPixel and/or getPixel, for anything more than a few pixels.
This commit is contained in:
Alex Szpakowski
2015-06-15 00:50:01 -03:00
parent 409d313bff
commit df1bd42dec
5 changed files with 289 additions and 43 deletions
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src/modules/image/ImageData.cpp
+11 -6
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@@ -71,16 +71,13 @@ void ImageData::setPixel(int x, int y, pixel c)
Lock lock(mutex);
pixel *pixels = (pixel *) getData();
pixels[y*getWidth()+x] = c;
pixels[y*width+x] = c;
}
void ImageData::setPixelUnsafe(int x, int y, pixel c)
{
if (!inside(x, y))
throw love::Exception("Attempt to set out-of-range pixel!");
pixel *pixels = (pixel *) getData();
pixels[y*getWidth()+x] = c;
pixels[y*width+x] = c;
}
pixel ImageData::getPixel(int x, int y) const
@@ -88,8 +85,16 @@ pixel ImageData::getPixel(int x, int y) const
if (!inside(x, y))
throw love::Exception("Attempt to get out-of-range pixel!");
Lock lock(mutex);
const pixel *pixels = (const pixel *) getData();
return pixels[y*getWidth()+x];
return pixels[y*width+x];
}
pixel ImageData::getPixelUnsafe(int x, int y) const
{
const pixel *pixels = (const pixel *) getData();
return pixels[y*width+x];
}
void ImageData::paste(ImageData *src, int dx, int dy, int sx, int sy, int sw, int sh)