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Clamp ColorMatrixFilter (legacy)

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This commit is contained in:
Joshua Granick
2015-02-11 17:32:00 -08:00
parent 96bc549ed8
commit b0438b8686
1 changed files with 13 additions and 6 deletions
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19
legacy/project/src/common/Filters.cpp
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@@ -320,6 +320,13 @@ void ColorMatrixFilter::GetFilteredObjectRect(Rect &ioRect,int inPass) const
{
}
int clamp255 (float val)
{
if (val > 0xff) return 0xff;
else if (val < 0) return 0;
else return int (val);
}
template<typename PIXEL>
void ColorMatrixFilter::DoApply(const Surface *inSrc,Surface *outDest,ImagePoint inSrc0,ImagePoint inDiff,int inPass
) const
@@ -338,14 +345,14 @@ void ColorMatrixFilter::DoApply(const Surface *inSrc,Surface *outDest,ImagePoint
const RenderTarget &target = render.Target();
for(int y=0;y<filter_h;y++)
{
ARGB *src = (ARGB *)inSrc -> Row(y);
ARGB *dest = (ARGB *)target.Row(y);
ARGB *src = (ARGB*)inSrc->Row(y);
ARGB *dest = (ARGB*)target.Row(y);
for(int x=0;x<filter_w;x++)
{
dest -> a = (mMatrix[15] * src -> r) + (mMatrix[16] * src -> g) + (mMatrix[17] * src -> b) + (mMatrix[18] * src -> a) + mMatrix[19];
dest -> r = (mMatrix[0] * src -> r) + (mMatrix[1] * src -> g) + (mMatrix[2] * src -> b) + (mMatrix[3] * src -> a) + mMatrix[4];
dest -> g = (mMatrix[5] * src -> r) + (mMatrix[6] * src -> g) + (mMatrix[7] * src -> b) + (mMatrix[8] * src -> a) + mMatrix[9];
dest -> b = (mMatrix[10] * src -> r) + (mMatrix[11] * src -> g) + (mMatrix[12] * src -> b) + (mMatrix[13] * src -> a) + mMatrix[14];
dest->r = clamp255 ((mMatrix[0] * src->r) + (mMatrix[1] * src->g) + (mMatrix[2] * src->b) + (mMatrix[3] * src->a) + mMatrix[4]);
dest->g = clamp255 ((mMatrix[5] * src->r) + (mMatrix[6] * src->g) + (mMatrix[7] * src->b) + (mMatrix[8] * src->a) + mMatrix[9]);
dest->b = clamp255 ((mMatrix[10] * src->r) + (mMatrix[11] * src->g) + (mMatrix[12] * src->b) + (mMatrix[13] * src->a) + mMatrix[14]);
dest->a = clamp255 ((mMatrix[15] * src->r) + (mMatrix[16] * src->g) + (mMatrix[17] * src->b) + (mMatrix[18] * src->a) + mMatrix[19]);
src++;
dest++;
}