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simplify paste_mask_1() and paste_mask_RGBa() accounting for pixelsize

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This commit is contained in:
Yay295 2022-08-20 23:06:09 -05:00
parent 5077726bba
commit 567b4798fd
1 changed files with 16 additions and 45 deletions
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61
src/libImaging/Paste.c
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@ -94,27 +94,14 @@ paste_mask_1(
int pixelsize) {
/* paste with mode "1" mask */
int x, y;
int x, y, b;
if (imOut->image8) {
for (y = 0; y < ysize; y++) {
UINT8 *out = imOut->image8[y + dy] + dx;
UINT8 *in = imIn->image8[y + sy] + sx;
UINT8 *mask = imMask->image8[y + sy] + sx;
for (x = 0; x < xsize; x++) {
if (*mask++) {
*out = *in;
}
out++, in++;
}
}
} else {
for (y = 0; y < ysize; y++) {
INT32 *out = imOut->image32[y + dy] + dx;
INT32 *in = imIn->image32[y + sy] + sx;
UINT8 *mask = imMask->image8[y + sy] + sx;
for (x = 0; x < xsize; x++) {
for (y = 0; y < ysize; y++) {
UINT8 *out = (UINT8 *)imOut->image[y + dy] + dx * pixelsize;
UINT8 *in = (UINT8 *)imIn->image[y + sy] + sx * pixelsize;
UINT8 *mask = (UINT8 *)imMask->image[y + sy] + sx;
for (x = 0; x < xsize; x++) {
for (b = 0; b < pixelsize; b++) {
if (*mask++) {
*out = *in;
}
@ -138,35 +125,19 @@ paste_mask_RGBa(
int pixelsize) {
/* paste with mode "RGBa" matte */
int x, y;
int x, y, b;
unsigned int tmp1;
if (imOut->image8) {
for (y = 0; y < ysize; y++) {
UINT8 *out = imOut->image8[y + dy] + dx;
UINT8 *in = imIn->image8[y + sy] + sx;
UINT8 *mask = (UINT8 *)imMask->image[y + sy] + sx * 4 + 3;
for (x = 0; x < xsize; x++) {
for (y = 0; y < ysize; y++) {
UINT8 *out = (UINT8 *)imOut->image[y + dy] + dx * pixelsize;
UINT8 *in = (UINT8 *)imIn->image[y + sy] + sx * pixelsize;
UINT8 *mask = (UINT8 *)imMask->image[y + sy] + sx * 4 + 3;
for (x = 0; x < xsize; x++) {
for (b = 0; b < pixelsize; b++) {
*out = PREBLEND(*mask, *out, *in, tmp1);
out++, in++, mask += 4;
}
}
} else {
for (y = 0; y < ysize; y++) {
UINT8 *out = (UINT8 *)(imOut->image32[y + dy] + dx);
UINT8 *in = (UINT8 *)(imIn->image32[y + sy] + sx);
UINT8 *mask = (UINT8 *)(imMask->image32[y + sy] + sx);
for (x = 0; x < xsize; x++) {
UINT8 a = mask[3];
out[0] = PREBLEND(a, out[0], in[0], tmp1);
out[1] = PREBLEND(a, out[1], in[1], tmp1);
out[2] = PREBLEND(a, out[2], in[2], tmp1);
out[3] = PREBLEND(a, out[3], in[3], tmp1);
out += 4;
in += 4;
mask += 4;
out++, in++;
}
mask += 4;
}
}
}