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MFB: Fixed bug #47946 (ImageConvolution overwrites background)

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This commit is contained in:
Ilia Alshanetsky
2009-04-12 14:45:05 +00:00
parent d10fb3127c
commit 0bb885a441
1 changed files with 5 additions and 1 deletions
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ext/gd/libgd/gd.c
+5 -1
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@@ -3863,7 +3863,7 @@ int gdImageConvolution(gdImagePtr src, float filter[3][3], float filter_div, flo
int x, y, i, j, new_a;
float new_r, new_g, new_b;
int new_pxl, pxl=0;
gdImagePtr srcback;
gdImagePtr srcback, srctrans;
typedef int (*FuncPtr)(gdImagePtr, int, int);
FuncPtr f;
@@ -3873,6 +3873,10 @@ int gdImageConvolution(gdImagePtr src, float filter[3][3], float filter_div, flo
/* We need the orinal image with each safe neoghb. pixel */
srcback = gdImageCreateTrueColor (src->sx, src->sy);
srcback->saveAlphaFlag = 1;
srctrans = gdImageColorAllocateAlpha(srcback, 0, 0, 0, 127);
gdImageFill(srcback, 0, 0, srctrans);
gdImageCopy(srcback, src,0,0,0,0,src->sx,src->sy);
if (srcback==NULL) {