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I was trying to optimize this w/o using this, hope the change is right.

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id
2000-12-17 14:43:08 +00:00
parent 163e70bdae
commit 210ff264b9
1 changed files with 83 additions and 50 deletions
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133
wrlib/xpixmap.c
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@@ -45,6 +45,12 @@ get_shifts(unsigned long mask)
return i;
}
#define NORMALIZE_RED(pixel) ((rshift>0) ? ((pixel) & rmask) >> rshift \
: ((pixel) & rmask) << -rshift)
#define NORMALIZE_GREEN(pixel) ((gshift>0) ? ((pixel) & gmask) >> gshift \
: ((pixel) & gmask) << -gshift)
#define NORMALIZE_BLUE(pixel) ((bshift>0) ? ((pixel) & bmask) >> bshift \
: ((pixel) & bmask) << -bshift)
RImage*
RCreateImageFromXImage(RContext *context, XImage *image, XImage *mask)
@@ -59,12 +65,12 @@ RCreateImageFromXImage(RContext *context, XImage *image, XImage *mask)
assert(image!=NULL);
assert(image->format==ZPixmap);
assert(!mask || mask->format==ZPixmap);
img = RCreateImage(image->width, image->height, mask!=NULL);
if (!img) {
return NULL;
return NULL;
}
/* I don't know why, but XGetImage() for pixmaps don't set the
* {red,green,blue}_mask values correctly.
@@ -86,59 +92,86 @@ RCreateImageFromXImage(RContext *context, XImage *image, XImage *mask)
data = img->data;
#define NORMALIZE_RED(pixel) ((rshift>0) ? ((pixel) & rmask) >> rshift \
: ((pixel) & rmask) << -rshift)
#define NORMALIZE_GREEN(pixel) ((gshift>0) ? ((pixel) & gmask) >> gshift \
: ((pixel) & gmask) << -gshift)
#define NORMALIZE_BLUE(pixel) ((bshift>0) ? ((pixel) & bmask) >> bshift \
: ((pixel) & bmask) << -bshift)
if (image->depth==1) {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
if (pixel) {
*data++ = 0;
*data++ = 0;
*data++ = 0;
} else {
*data++ = 0xff;
*data++ = 0xff;
*data++ = 0xff;
}
if (mask)
*data++ = 0;
}
}
if (mask) {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
if (pixel) {
*data++ = 0;
*data++ = 0;
*data++ = 0;
} else {
*data++ = 0xff;
*data++ = 0xff;
*data++ = 0xff;
}
data++;
}
}
} else {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
if (pixel) {
*data++ = 0;
*data++ = 0;
*data++ = 0;
} else {
*data++ = 0xff;
*data++ = 0xff;
*data++ = 0xff;
}
}
}
}
} else {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
*(data++) = NORMALIZE_RED(pixel);
*(data++) = NORMALIZE_GREEN(pixel);
*(data++) = NORMALIZE_BLUE(pixel);
if (mask)
*(data++) = 0;
}
}
if (mask) {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
*(data++) = NORMALIZE_RED(pixel);
*(data++) = NORMALIZE_GREEN(pixel);
*(data++) = NORMALIZE_BLUE(pixel);
data++;
}
}
} else {
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
pixel = XGetPixel(image, x, y);
*(data++) = NORMALIZE_RED(pixel);
*(data++) = NORMALIZE_GREEN(pixel);
*(data++) = NORMALIZE_BLUE(pixel);
}
}
}
}
data = img->data;
#define MIN(a,b) ((a)<(b)?(a):(b))
if (mask) {
for (y = 0; y < MIN(mask->height, image->height); y++) {
for (x = 0; x < image->width; x++) {
data += 3; /* Skip R, G & B */
if (mask->width <= image->width && XGetPixel(mask, x, y)) {
*(data++) = 0xff;
} else {
*(data++) = 0;
}
}
}
data = img->data;
data += 3; /* Skip R, G & B */
for (y = 0; y < MIN(mask->height, image->height); y++) {
for (x = 0; x < MIN(mask->width, image->width); x++) {
if (mask->width <= image->width && XGetPixel(mask, x, y)) {
*data = 0xff;
} else {
*data = 0;
}
data += 4;
}
for (; x < image->width; x++) {
*data = 0;
data += 4;
}
}
for (; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
*data = 0;
data += 4;
}
}
}
return img;
}