mirror of
https://github.com/gnustep/libs-back.git
synced 2025-02-23 11:51:27 +00:00
Replaced old unpre-multiply hack with a proper solution.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@26256 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Fred Kiefer
parent
8233f379cf
commit
79d8eec276
3 changed files with 366 additions and 356 deletions
|
|
@ -1,3 +1,10 @@
|
|||
2008-03-09 Fred Kiefer <FredKiefer@gmx.de>
|
||||
|
||||
* Source/art/ARTContext.m (-GSDrawImage:): Remove this hack again.
|
||||
* Source/art/image.m (_image_get_color_rgb_cmyk_gray,
|
||||
_image_get_color_rgb_8): Make sure the image gets unpremultied in
|
||||
all cases.
|
||||
|
||||
2008-03-08 Fred Kiefer <FredKiefer@gmx.de>
|
||||
|
||||
* Source\win32\WIN32Server.m (-exwindowStyleForGSStyle:):
|
||||
|
|
|
|||
|
|
@ -179,14 +179,3 @@ static int byte_order(void)
|
|||
[(ARTGState *)gstate GSCurrentDevice: device : x : y];
|
||||
}
|
||||
@end
|
||||
|
||||
@implementation ARTContext (Ops)
|
||||
|
||||
- (void) GSDrawImage: (NSRect) rect: (void *) imageref
|
||||
{
|
||||
// Hack until Art is able to handle premultiplied images
|
||||
[imageref _unpremultiply];
|
||||
[super GSDrawImage: rect : imageref];
|
||||
}
|
||||
|
||||
@end
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
|
|
@ -56,13 +56,13 @@ not just discard the extra bits
|
|||
{
|
||||
v <<= 1;
|
||||
if ((*ptr) & (128 >> bit_ofs))
|
||||
v |= 1;
|
||||
v |= 1;
|
||||
bit_ofs++;
|
||||
if (bit_ofs == 8)
|
||||
{
|
||||
ptr++;
|
||||
bit_ofs = 0;
|
||||
}
|
||||
{
|
||||
ptr++;
|
||||
bit_ofs = 0;
|
||||
}
|
||||
}
|
||||
/* extend what we've got to 8 bits */
|
||||
switch (num_bits)
|
||||
|
|
@ -113,7 +113,7 @@ typedef struct
|
|||
|
||||
|
||||
static void _image_get_color_rgb_8(image_info_t *ii, render_run_t *ri,
|
||||
int x, int y)
|
||||
int x, int y)
|
||||
{
|
||||
int ofs;
|
||||
|
||||
|
|
@ -129,9 +129,9 @@ static void _image_get_color_rgb_8(image_info_t *ii, render_run_t *ri,
|
|||
ri->g = ii->data[1][ofs];
|
||||
ri->b = ii->data[2][ofs];
|
||||
if (ii->has_alpha)
|
||||
ri->a = ii->data[3][ofs];
|
||||
ri->a = ii->data[3][ofs];
|
||||
else
|
||||
ri->a = 255;
|
||||
ri->a = 255;
|
||||
}
|
||||
else
|
||||
{
|
||||
|
|
@ -139,14 +139,21 @@ static void _image_get_color_rgb_8(image_info_t *ii, render_run_t *ri,
|
|||
ri->g = ii->data[0][ofs + 1];
|
||||
ri->b = ii->data[0][ofs + 2];
|
||||
if (ii->has_alpha)
|
||||
ri->a = ii->data[0][ofs + 3];
|
||||
ri->a = ii->data[0][ofs + 3];
|
||||
else
|
||||
ri->a = 255;
|
||||
ri->a = 255;
|
||||
}
|
||||
/* Undo premultiply */
|
||||
if (ri->a && ri->a != 255)
|
||||
{
|
||||
ri->r = (255 * ri->r) / ri->a;
|
||||
ri->g = (255 * ri->g) / ri->a;
|
||||
ri->b = (255 * ri->b) / ri->a;
|
||||
}
|
||||
}
|
||||
|
||||
static void _image_get_color_rgb_cmyk_gray(image_info_t *ii, render_run_t *ri,
|
||||
int x, int y)
|
||||
int x, int y)
|
||||
{
|
||||
int ofs, bit_ofs;
|
||||
int values[5];
|
||||
|
|
@ -164,9 +171,9 @@ static void _image_get_color_rgb_cmyk_gray(image_info_t *ii, render_run_t *ri,
|
|||
{
|
||||
values[i] = _get_8_bits(ii->data[j] + ofs, bit_ofs, ii->bits_per_sample);
|
||||
if (ii->is_planar)
|
||||
j++;
|
||||
j++;
|
||||
else
|
||||
bit_ofs += ii->bits_per_sample;
|
||||
bit_ofs += ii->bits_per_sample;
|
||||
}
|
||||
if (ii->has_alpha)
|
||||
ri->a = values[i - 1];
|
||||
|
|
@ -196,14 +203,21 @@ static void _image_get_color_rgb_cmyk_gray(image_info_t *ii, render_run_t *ri,
|
|||
{
|
||||
ri->r = ri->g = ri->b = 255 - values[0];
|
||||
}
|
||||
/* Undo premultiply */
|
||||
if (ri->a && ri->a != 255)
|
||||
{
|
||||
ri->r = (255 * ri->r) / ri->a;
|
||||
ri->g = (255 * ri->g) / ri->a;
|
||||
ri->b = (255 * ri->b) / ri->a;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@implementation ARTGState (image)
|
||||
|
||||
-(void) _image_do_rgb_transform: (image_info_t *)ii
|
||||
: (NSAffineTransform *)matrix
|
||||
: (void (*)(image_info_t *ii, render_run_t *ri, int x, int y))ifunc
|
||||
: (NSAffineTransform *)matrix
|
||||
: (void (*)(image_info_t *ii, render_run_t *ri, int x, int y))ifunc
|
||||
{
|
||||
/*
|
||||
TODO:
|
||||
|
|
@ -277,15 +291,15 @@ seem to cause edges to be off by a pixel
|
|||
left_delta = -1;
|
||||
|
||||
/* printf("x/y (%i %i) (%i %i) (%i %i) (%i %i) t (%i %i) (%i %i) (%i %i) (%i %i) le=%i\n",
|
||||
x[0],y[0],
|
||||
x[1],y[1],
|
||||
x[2],y[2],
|
||||
x[3],y[3],
|
||||
tx[0],ty[0],
|
||||
tx[1],ty[1],
|
||||
tx[2],ty[2],
|
||||
tx[3],ty[3],
|
||||
le);*/
|
||||
x[0],y[0],
|
||||
x[1],y[1],
|
||||
x[2],y[2],
|
||||
x[3],y[3],
|
||||
tx[0],ty[0],
|
||||
tx[1],ty[1],
|
||||
tx[2],ty[2],
|
||||
tx[3],ty[3],
|
||||
le);*/
|
||||
|
||||
/* silence the compiler */
|
||||
lx = lx_frac = ldx = ldx_frac = l_de = 0;
|
||||
|
|
@ -296,281 +310,281 @@ seem to cause edges to be off by a pixel
|
|||
while (cy <= ey && cy < clip_y1)
|
||||
{
|
||||
if (cy == y[le])
|
||||
{
|
||||
next = (le + left_delta) & 3;
|
||||
while (y[le] == y[next])
|
||||
{
|
||||
le = next;
|
||||
next = (le + left_delta) & 3;
|
||||
}
|
||||
l_de = y[next] - y[le];
|
||||
lx = x[le];
|
||||
lx_frac = 0;
|
||||
ldx = (x[next] - x[le]) / l_de;
|
||||
ldx_frac = (x[next] - x[le]) % l_de;
|
||||
{
|
||||
next = (le + left_delta) & 3;
|
||||
while (y[le] == y[next])
|
||||
{
|
||||
le = next;
|
||||
next = (le + left_delta) & 3;
|
||||
}
|
||||
l_de = y[next] - y[le];
|
||||
lx = x[le];
|
||||
lx_frac = 0;
|
||||
ldx = (x[next] - x[le]) / l_de;
|
||||
ldx_frac = (x[next] - x[le]) % l_de;
|
||||
|
||||
ltx = tx[le];
|
||||
lty = ty[le];
|
||||
ltx_frac = 0;
|
||||
lty_frac = 0;
|
||||
ldtx = (tx[next] - tx[le]) / l_de;
|
||||
ldty = (ty[next] - ty[le]) / l_de;
|
||||
ldtx_frac = (tx[next] - tx[le]) % l_de;
|
||||
ldty_frac = (ty[next] - ty[le]) % l_de;
|
||||
ltx = tx[le];
|
||||
lty = ty[le];
|
||||
ltx_frac = 0;
|
||||
lty_frac = 0;
|
||||
ldtx = (tx[next] - tx[le]) / l_de;
|
||||
ldty = (ty[next] - ty[le]) / l_de;
|
||||
ldtx_frac = (tx[next] - tx[le]) % l_de;
|
||||
ldty_frac = (ty[next] - ty[le]) % l_de;
|
||||
|
||||
le = next;
|
||||
}
|
||||
le = next;
|
||||
}
|
||||
else
|
||||
{
|
||||
lx += ldx;
|
||||
lx_frac += ldx_frac;
|
||||
if (lx_frac < 0)
|
||||
lx--, lx_frac += l_de;
|
||||
if (lx_frac > l_de)
|
||||
lx++, lx_frac -= l_de;
|
||||
{
|
||||
lx += ldx;
|
||||
lx_frac += ldx_frac;
|
||||
if (lx_frac < 0)
|
||||
lx--, lx_frac += l_de;
|
||||
if (lx_frac > l_de)
|
||||
lx++, lx_frac -= l_de;
|
||||
|
||||
ltx += ldtx;
|
||||
ltx_frac += ldtx_frac;
|
||||
if (ltx_frac < 0)
|
||||
ltx--, ltx_frac += l_de;
|
||||
if (ltx_frac > l_de)
|
||||
ltx++, ltx_frac -= l_de;
|
||||
ltx += ldtx;
|
||||
ltx_frac += ldtx_frac;
|
||||
if (ltx_frac < 0)
|
||||
ltx--, ltx_frac += l_de;
|
||||
if (ltx_frac > l_de)
|
||||
ltx++, ltx_frac -= l_de;
|
||||
|
||||
lty += ldty;
|
||||
lty_frac += ldty_frac;
|
||||
if (lty_frac < 0)
|
||||
lty--, lty_frac += l_de;
|
||||
if (lty_frac > l_de)
|
||||
lty++, lty_frac -= l_de;
|
||||
}
|
||||
lty += ldty;
|
||||
lty_frac += ldty_frac;
|
||||
if (lty_frac < 0)
|
||||
lty--, lty_frac += l_de;
|
||||
if (lty_frac > l_de)
|
||||
lty++, lty_frac -= l_de;
|
||||
}
|
||||
|
||||
if (cy == y[re])
|
||||
{
|
||||
next = (re - left_delta) & 3;
|
||||
while (y[re] == y[next])
|
||||
{
|
||||
re = next;
|
||||
next = (re - left_delta) & 3;
|
||||
}
|
||||
r_de = y[next] - y[re];
|
||||
rx = x[re];
|
||||
rx_frac = r_de - 1; /* TODO? */
|
||||
rdx = (x[next] - x[re]) / r_de;
|
||||
rdx_frac = (x[next] - x[re]) % r_de;
|
||||
{
|
||||
next = (re - left_delta) & 3;
|
||||
while (y[re] == y[next])
|
||||
{
|
||||
re = next;
|
||||
next = (re - left_delta) & 3;
|
||||
}
|
||||
r_de = y[next] - y[re];
|
||||
rx = x[re];
|
||||
rx_frac = r_de - 1; /* TODO? */
|
||||
rdx = (x[next] - x[re]) / r_de;
|
||||
rdx_frac = (x[next] - x[re]) % r_de;
|
||||
|
||||
rtx = tx[re];
|
||||
rty = ty[re];
|
||||
rtx_frac = 0;
|
||||
rty_frac = 0;
|
||||
rdtx = (tx[next] - tx[re]) / r_de;
|
||||
rdty = (ty[next] - ty[re]) / r_de;
|
||||
rdtx_frac = (tx[next] - tx[re]) % r_de;
|
||||
rdty_frac = (ty[next] - ty[re]) % r_de;
|
||||
rtx = tx[re];
|
||||
rty = ty[re];
|
||||
rtx_frac = 0;
|
||||
rty_frac = 0;
|
||||
rdtx = (tx[next] - tx[re]) / r_de;
|
||||
rdty = (ty[next] - ty[re]) / r_de;
|
||||
rdtx_frac = (tx[next] - tx[re]) % r_de;
|
||||
rdty_frac = (ty[next] - ty[re]) % r_de;
|
||||
|
||||
re = next;
|
||||
}
|
||||
re = next;
|
||||
}
|
||||
else
|
||||
{
|
||||
rx += rdx;
|
||||
rx_frac += rdx_frac;
|
||||
if (rx_frac < 0)
|
||||
rx--, rx_frac += r_de;
|
||||
if (rx_frac > r_de)
|
||||
rx++, rx_frac -= r_de;
|
||||
{
|
||||
rx += rdx;
|
||||
rx_frac += rdx_frac;
|
||||
if (rx_frac < 0)
|
||||
rx--, rx_frac += r_de;
|
||||
if (rx_frac > r_de)
|
||||
rx++, rx_frac -= r_de;
|
||||
|
||||
rtx += rdtx;
|
||||
rtx_frac += rdtx_frac;
|
||||
if (rtx_frac < 0)
|
||||
rtx--, rtx_frac += r_de;
|
||||
if (rtx_frac > r_de)
|
||||
rtx++, rtx_frac -= r_de;
|
||||
rtx += rdtx;
|
||||
rtx_frac += rdtx_frac;
|
||||
if (rtx_frac < 0)
|
||||
rtx--, rtx_frac += r_de;
|
||||
if (rtx_frac > r_de)
|
||||
rtx++, rtx_frac -= r_de;
|
||||
|
||||
rty += rdty;
|
||||
rty_frac += rdty_frac;
|
||||
if (rty_frac < 0)
|
||||
rty--, rty_frac += r_de;
|
||||
if (rty_frac > r_de)
|
||||
rty++, rty_frac -= r_de;
|
||||
}
|
||||
rty += rdty;
|
||||
rty_frac += rdty_frac;
|
||||
if (rty_frac < 0)
|
||||
rty--, rty_frac += r_de;
|
||||
if (rty_frac > r_de)
|
||||
rty++, rty_frac -= r_de;
|
||||
}
|
||||
|
||||
/* printf("cy=%i left(x=%i, tx=%i, ty=%i) right(x=%i, tx=%i, ty=%i)\n",
|
||||
cy,
|
||||
lx,ltx,lty,
|
||||
rx,rtx,rty);*/
|
||||
cy,
|
||||
lx,ltx,lty,
|
||||
rx,rtx,rty);*/
|
||||
|
||||
if (cy >= clip_y0 && rx > lx)
|
||||
{
|
||||
render_run_t ri;
|
||||
int x0, x1, de;
|
||||
int tx, ty, tx_frac, ty_frac, dtx, dty, dtx_frac, dty_frac;
|
||||
int delta;
|
||||
int scale_factor;
|
||||
{
|
||||
render_run_t ri;
|
||||
int x0, x1, de;
|
||||
int tx, ty, tx_frac, ty_frac, dtx, dty, dtx_frac, dty_frac;
|
||||
int delta;
|
||||
int scale_factor;
|
||||
|
||||
x0 = lx;
|
||||
x1 = rx;
|
||||
de = x1 - x0;
|
||||
x0 = lx;
|
||||
x1 = rx;
|
||||
de = x1 - x0;
|
||||
|
||||
tx = ltx;
|
||||
ty = lty;
|
||||
if (r_de * l_de > 0x10000)
|
||||
{
|
||||
/*
|
||||
If the numbers involved are really large, scale things down
|
||||
a bit. This loses some accuracy, but should keep things in
|
||||
range.
|
||||
*/
|
||||
scale_factor = 10;
|
||||
tx_frac = ltx_frac * ((de * r_de) >> scale_factor);
|
||||
ty_frac = lty_frac * ((de * r_de) >> scale_factor);
|
||||
de *= (r_de * l_de) >> scale_factor;
|
||||
}
|
||||
else
|
||||
{
|
||||
tx_frac = ltx_frac * de * r_de;
|
||||
ty_frac = lty_frac * de * r_de;
|
||||
scale_factor = 0;
|
||||
de *= r_de * l_de;
|
||||
}
|
||||
tx = ltx;
|
||||
ty = lty;
|
||||
if (r_de * l_de > 0x10000)
|
||||
{
|
||||
/*
|
||||
If the numbers involved are really large, scale things down
|
||||
a bit. This loses some accuracy, but should keep things in
|
||||
range.
|
||||
*/
|
||||
scale_factor = 10;
|
||||
tx_frac = ltx_frac * ((de * r_de) >> scale_factor);
|
||||
ty_frac = lty_frac * ((de * r_de) >> scale_factor);
|
||||
de *= (r_de * l_de) >> scale_factor;
|
||||
}
|
||||
else
|
||||
{
|
||||
tx_frac = ltx_frac * de * r_de;
|
||||
ty_frac = lty_frac * de * r_de;
|
||||
scale_factor = 0;
|
||||
de *= r_de * l_de;
|
||||
}
|
||||
|
||||
delta = ((rtx * r_de + rtx_frac) >> scale_factor) * l_de
|
||||
- ((ltx * l_de + ltx_frac) >> scale_factor) * r_de;
|
||||
dtx = delta / de;
|
||||
dtx_frac = delta % de;
|
||||
delta = ((rtx * r_de + rtx_frac) >> scale_factor) * l_de
|
||||
- ((ltx * l_de + ltx_frac) >> scale_factor) * r_de;
|
||||
dtx = delta / de;
|
||||
dtx_frac = delta % de;
|
||||
|
||||
delta = ((rty * r_de + rty_frac) >> scale_factor) * l_de
|
||||
- ((lty * l_de + lty_frac) >> scale_factor) * r_de;
|
||||
dty = delta / de;
|
||||
dty_frac = delta % de;
|
||||
delta = ((rty * r_de + rty_frac) >> scale_factor) * l_de
|
||||
- ((lty * l_de + lty_frac) >> scale_factor) * r_de;
|
||||
dty = delta / de;
|
||||
dty_frac = delta % de;
|
||||
|
||||
/* printf("r_de=%i l_de=%i de=%i dtx=%i dtx_frac=%i dty=%i dty_frac=%i\n",
|
||||
r_de,l_de,de,dtx,dtx_frac,dty,dty_frac);
|
||||
printf(" start at x(%i %i) y(%i %i)\n",
|
||||
tx,tx_frac,ty,ty_frac);*/
|
||||
/* printf("r_de=%i l_de=%i de=%i dtx=%i dtx_frac=%i dty=%i dty_frac=%i\n",
|
||||
r_de,l_de,de,dtx,dtx_frac,dty,dty_frac);
|
||||
printf(" start at x(%i %i) y(%i %i)\n",
|
||||
tx,tx_frac,ty,ty_frac);*/
|
||||
|
||||
/*
|
||||
x0 x1 / x2 -> y0 y1 / y2 z
|
||||
((y0 * y2 + y1) * x2 - (x0 * x2 + x1) * y2) / (x2 * y2 * z)
|
||||
*/
|
||||
/*
|
||||
x0 x1 / x2 -> y0 y1 / y2 z
|
||||
((y0 * y2 + y1) * x2 - (x0 * x2 + x1) * y2) / (x2 * y2 * z)
|
||||
*/
|
||||
|
||||
/*
|
||||
TODO: Would like to use this code instead for speed, but
|
||||
the multiplications dtx*(clip_x0-x0) may overflow. Need to figure
|
||||
out a way of doing this safely, or add checks for 'large numbers'
|
||||
so we can use this in most cases, at least.
|
||||
*/
|
||||
/* if (x0 < clip_x0)
|
||||
{
|
||||
tx += dtx * (clip_x0 - x0);
|
||||
ty += dty * (clip_x0 - x0);
|
||||
tx_frac += dtx_frac * (clip_x0 - x0);
|
||||
while (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
while (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac * (clip_x0 - x0);
|
||||
while (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
while (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
x0 = clip_x0;
|
||||
}*/
|
||||
if (x0 < clip_x0)
|
||||
{
|
||||
tx += dtx * (clip_x0 - x0);
|
||||
ty += dty * (clip_x0 - x0);
|
||||
while (x0 < clip_x0)
|
||||
{
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
x0++;
|
||||
}
|
||||
}
|
||||
if (x1 > clip_x1) x1 = clip_x1;
|
||||
/*
|
||||
TODO: Would like to use this code instead for speed, but
|
||||
the multiplications dtx*(clip_x0-x0) may overflow. Need to figure
|
||||
out a way of doing this safely, or add checks for 'large numbers'
|
||||
so we can use this in most cases, at least.
|
||||
*/
|
||||
/* if (x0 < clip_x0)
|
||||
{
|
||||
tx += dtx * (clip_x0 - x0);
|
||||
ty += dty * (clip_x0 - x0);
|
||||
tx_frac += dtx_frac * (clip_x0 - x0);
|
||||
while (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
while (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac * (clip_x0 - x0);
|
||||
while (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
while (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
x0 = clip_x0;
|
||||
}*/
|
||||
if (x0 < clip_x0)
|
||||
{
|
||||
tx += dtx * (clip_x0 - x0);
|
||||
ty += dty * (clip_x0 - x0);
|
||||
while (x0 < clip_x0)
|
||||
{
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
x0++;
|
||||
}
|
||||
}
|
||||
if (x1 > clip_x1) x1 = clip_x1;
|
||||
|
||||
ri.dst = wi->data + x0 * DI.bytes_per_pixel
|
||||
+ cy * wi->bytes_per_line;
|
||||
ri.dsta = wi->alpha + x0 + cy * wi->sx;
|
||||
ri.dst = wi->data + x0 * DI.bytes_per_pixel
|
||||
+ cy * wi->bytes_per_line;
|
||||
ri.dsta = wi->alpha + x0 + cy * wi->sx;
|
||||
|
||||
if (!clip_span)
|
||||
{
|
||||
for (; x0 < x1; x0++, ri.dst += DI.bytes_per_pixel, ri.dsta++)
|
||||
{
|
||||
ifunc(ii, &ri, tx, ty);
|
||||
render_run(&ri, 1);
|
||||
if (!clip_span)
|
||||
{
|
||||
for (; x0 < x1; x0++, ri.dst += DI.bytes_per_pixel, ri.dsta++)
|
||||
{
|
||||
ifunc(ii, &ri, tx, ty);
|
||||
render_run(&ri, 1);
|
||||
|
||||
tx += dtx;
|
||||
ty += dty;
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned int *span, *end;
|
||||
BOOL state = NO;
|
||||
tx += dtx;
|
||||
ty += dty;
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned int *span, *end;
|
||||
BOOL state = NO;
|
||||
|
||||
span = &clip_span[clip_index[cy - clip_y0]];
|
||||
end = &clip_span[clip_index[cy - clip_y0 + 1]];
|
||||
span = &clip_span[clip_index[cy - clip_y0]];
|
||||
end = &clip_span[clip_index[cy - clip_y0 + 1]];
|
||||
|
||||
x0 -= clip_x0;
|
||||
x1 -= clip_x0;
|
||||
while (span != end && *span < x0)
|
||||
{
|
||||
state = !state;
|
||||
span++;
|
||||
if (span == end)
|
||||
break;
|
||||
}
|
||||
if (span != end)
|
||||
{
|
||||
for (; x0 < x1; x0++, ri.dst += DI.bytes_per_pixel, ri.dsta++)
|
||||
{
|
||||
if (x0 == *span)
|
||||
{
|
||||
span++;
|
||||
state = !state;
|
||||
if (span == end)
|
||||
break;
|
||||
}
|
||||
|
||||
if (state)
|
||||
{
|
||||
ifunc(ii, &ri, tx, ty);
|
||||
render_run(&ri, 1);
|
||||
}
|
||||
x0 -= clip_x0;
|
||||
x1 -= clip_x0;
|
||||
while (span != end && *span < x0)
|
||||
{
|
||||
state = !state;
|
||||
span++;
|
||||
if (span == end)
|
||||
break;
|
||||
}
|
||||
if (span != end)
|
||||
{
|
||||
for (; x0 < x1; x0++, ri.dst += DI.bytes_per_pixel, ri.dsta++)
|
||||
{
|
||||
if (x0 == *span)
|
||||
{
|
||||
span++;
|
||||
state = !state;
|
||||
if (span == end)
|
||||
break;
|
||||
}
|
||||
|
||||
if (state)
|
||||
{
|
||||
ifunc(ii, &ri, tx, ty);
|
||||
render_run(&ri, 1);
|
||||
}
|
||||
|
||||
tx += dtx;
|
||||
ty += dty;
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
tx += dtx;
|
||||
ty += dty;
|
||||
tx_frac += dtx_frac;
|
||||
if (tx_frac < 0)
|
||||
tx--, tx_frac += de;
|
||||
if (tx_frac >= de)
|
||||
tx++, tx_frac -= de;
|
||||
ty_frac += dty_frac;
|
||||
if (ty_frac < 0)
|
||||
ty--, ty_frac += de;
|
||||
if (ty_frac >= de)
|
||||
ty++, ty_frac -= de;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cy++;
|
||||
}
|
||||
|
|
@ -578,15 +592,15 @@ seem to cause edges to be off by a pixel
|
|||
|
||||
|
||||
- (void)DPSimage: (NSAffineTransform *) matrix
|
||||
: (int) pixelsWide : (int) pixelsHigh
|
||||
: (int) bitsPerSample : (int) samplesPerPixel
|
||||
: (int) bitsPerPixel : (int) bytesPerRow : (BOOL) isPlanar
|
||||
: (BOOL) hasAlpha : (NSString *) colorSpaceName
|
||||
: (const unsigned char *const [5]) data
|
||||
: (int) pixelsWide : (int) pixelsHigh
|
||||
: (int) bitsPerSample : (int) samplesPerPixel
|
||||
: (int) bitsPerPixel : (int) bytesPerRow : (BOOL) isPlanar
|
||||
: (BOOL) hasAlpha : (NSString *) colorSpaceName
|
||||
: (const unsigned char *const [5]) data
|
||||
{
|
||||
BOOL identity_transform, is_rgb;
|
||||
image_info_t ii;
|
||||
NSAffineTransformStruct ts;
|
||||
NSAffineTransformStruct ts;
|
||||
|
||||
if (!wi || !wi->data) return;
|
||||
if (all_clipped) return;
|
||||
|
|
@ -619,74 +633,74 @@ seem to cause edges to be off by a pixel
|
|||
render_run_t ri;
|
||||
|
||||
if (wi->has_alpha)
|
||||
{
|
||||
if (DI.inline_alpha)
|
||||
alpha_dest = wi->data + DI.inline_alpha_ofs;
|
||||
else
|
||||
alpha_dest = wi->alpha;
|
||||
}
|
||||
{
|
||||
if (DI.inline_alpha)
|
||||
alpha_dest = wi->data + DI.inline_alpha_ofs;
|
||||
else
|
||||
alpha_dest = wi->alpha;
|
||||
}
|
||||
else
|
||||
alpha_dest = NULL;
|
||||
alpha_dest = NULL;
|
||||
|
||||
ox = [matrix transformPoint: NSMakePoint(0, 0)].x - offset.x;
|
||||
oy = offset.y - [matrix transformPoint: NSMakePoint(0, 0)].y - pixelsHigh;
|
||||
|
||||
for (y = 0; y < pixelsHigh; y++)
|
||||
{
|
||||
for (x = 0; x < pixelsWide; x++)
|
||||
{
|
||||
if (x + ox < clip_x0 || x + ox >= clip_x1 ||
|
||||
y + oy < clip_y0 || y + oy >= clip_y1)
|
||||
{
|
||||
if (hasAlpha)
|
||||
src += 4;
|
||||
else
|
||||
src += 3;
|
||||
continue;
|
||||
}
|
||||
ri.dst = wi->data + (x + ox) * DI.bytes_per_pixel
|
||||
+ (y + oy) * wi->bytes_per_line;
|
||||
ri.dsta = wi->alpha + (x + ox) + (y + oy) * wi->sx;
|
||||
ri.r = src[0];
|
||||
ri.g = src[1];
|
||||
ri.b = src[2];
|
||||
if (hasAlpha)
|
||||
{
|
||||
ri.a = src[3];
|
||||
/* TODO: find out if input is premultiplied or not */
|
||||
if (ri.a && ri.a != 255)
|
||||
{
|
||||
ri.r = (255 * ri.r) / ri.a;
|
||||
ri.g = (255 * ri.g) / ri.a;
|
||||
ri.b = (255 * ri.b) / ri.a;
|
||||
}
|
||||
if (alpha_dest)
|
||||
{
|
||||
if (src[3] == 255)
|
||||
RENDER_RUN_OPAQUE_A(&ri, 1);
|
||||
else if (src[3])
|
||||
RENDER_RUN_ALPHA_A(&ri, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (src[3] == 255)
|
||||
RENDER_RUN_OPAQUE(&ri, 1);
|
||||
else if (src[3])
|
||||
RENDER_RUN_ALPHA(&ri, 1);
|
||||
}
|
||||
src += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
ri.a = 255;
|
||||
if (alpha_dest)
|
||||
RENDER_RUN_OPAQUE_A(&ri, 1);
|
||||
else
|
||||
RENDER_RUN_OPAQUE(&ri, 1);
|
||||
src += 3;
|
||||
}
|
||||
}
|
||||
}
|
||||
{
|
||||
for (x = 0; x < pixelsWide; x++)
|
||||
{
|
||||
if (x + ox < clip_x0 || x + ox >= clip_x1 ||
|
||||
y + oy < clip_y0 || y + oy >= clip_y1)
|
||||
{
|
||||
if (hasAlpha)
|
||||
src += 4;
|
||||
else
|
||||
src += 3;
|
||||
continue;
|
||||
}
|
||||
ri.dst = wi->data + (x + ox) * DI.bytes_per_pixel
|
||||
+ (y + oy) * wi->bytes_per_line;
|
||||
ri.dsta = wi->alpha + (x + ox) + (y + oy) * wi->sx;
|
||||
ri.r = src[0];
|
||||
ri.g = src[1];
|
||||
ri.b = src[2];
|
||||
if (hasAlpha)
|
||||
{
|
||||
ri.a = src[3];
|
||||
/* Undo premultiply */
|
||||
if (ri.a && ri.a != 255)
|
||||
{
|
||||
ri.r = (255 * ri.r) / ri.a;
|
||||
ri.g = (255 * ri.g) / ri.a;
|
||||
ri.b = (255 * ri.b) / ri.a;
|
||||
}
|
||||
if (alpha_dest)
|
||||
{
|
||||
if (src[3] == 255)
|
||||
RENDER_RUN_OPAQUE_A(&ri, 1);
|
||||
else if (src[3])
|
||||
RENDER_RUN_ALPHA_A(&ri, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (src[3] == 255)
|
||||
RENDER_RUN_OPAQUE(&ri, 1);
|
||||
else if (src[3])
|
||||
RENDER_RUN_ALPHA(&ri, 1);
|
||||
}
|
||||
src += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
ri.a = 255;
|
||||
if (alpha_dest)
|
||||
RENDER_RUN_OPAQUE_A(&ri, 1);
|
||||
else
|
||||
RENDER_RUN_OPAQUE(&ri, 1);
|
||||
src += 3;
|
||||
}
|
||||
}
|
||||
}
|
||||
UPDATE_UNBUFFERED
|
||||
return;
|
||||
}
|
||||
|
|
@ -715,10 +729,10 @@ seem to cause edges to be off by a pixel
|
|||
else if (colorSpaceName == NSDeviceCMYKColorSpace)
|
||||
ii.colorspace = 2;
|
||||
else if (colorSpaceName == NSDeviceWhiteColorSpace ||
|
||||
colorSpaceName == NSCalibratedWhiteColorSpace)
|
||||
colorSpaceName == NSCalibratedWhiteColorSpace)
|
||||
ii.colorspace = 3;
|
||||
else if (colorSpaceName == NSDeviceBlackColorSpace ||
|
||||
colorSpaceName == NSCalibratedBlackColorSpace)
|
||||
colorSpaceName == NSCalibratedBlackColorSpace)
|
||||
ii.colorspace = 4;
|
||||
else
|
||||
ii.colorspace = 0;
|
||||
|
|
@ -726,15 +740,15 @@ seem to cause edges to be off by a pixel
|
|||
if (ii.colorspace != 0)
|
||||
{
|
||||
[self _image_do_rgb_transform: &ii : matrix :
|
||||
_image_get_color_rgb_cmyk_gray];
|
||||
_image_get_color_rgb_cmyk_gray];
|
||||
UPDATE_UNBUFFERED
|
||||
return;
|
||||
}
|
||||
|
||||
NSLog(@"unimplemented DPSimage %ix%i |%@| bips=%i spp=%i bipp=%i bypr=%i planar=%i alpha=%i\n",
|
||||
pixelsWide, pixelsHigh, matrix,
|
||||
bitsPerSample, samplesPerPixel, bitsPerPixel, bytesPerRow, isPlanar,
|
||||
hasAlpha);
|
||||
pixelsWide, pixelsHigh, matrix,
|
||||
bitsPerSample, samplesPerPixel, bitsPerPixel, bytesPerRow, isPlanar,
|
||||
hasAlpha);
|
||||
}
|
||||
|
||||
@end
|
||||
|
|
|
|||
Loading…
Reference in a new issue