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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.68 by root, Sat Jun 9 11:14:35 2012 UTC vs.
Revision 1.108 by sf-exg, Fri Nov 7 13:45:55 2014 UTC

1/*----------------------------------------------------------------------*
2 * File: rxvtimg.C
3 *----------------------------------------------------------------------*
4 *
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de>
7 * Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *---------------------------------------------------------------------*/
23
24#include <string.h>
1#include <math.h> 25#include <math.h>
2#include "../config.h" 26#include "../config.h"
3#include "rxvt.h" 27#include "rxvt.h"
4 28
5#if HAVE_IMG 29#if HAVE_IMG
6 30
31typedef rxvt_img::nv nv;
32
33namespace
34{
35 struct mat3x3
36 {
37 nv v[3][3];
38
39 mat3x3 ()
40 {
41 }
42
43 mat3x3 (const nv *matrix)
44 {
45 memcpy (v, matrix, sizeof (v));
46 }
47
48 mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
49 {
50 v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
51 v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
52 v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
53 }
54
55 mat3x3 inverse ();
56
57 nv *operator [](int i) { return &v[i][0]; }
58 const nv *operator [](int i) const { return &v[i][0]; }
59
60 operator const nv * () const { return &v[0][0]; }
61 operator nv * () { return &v[0][0]; }
62
63 // quite inefficient, hopefully gcc pulls the w calc out of any loops
64 nv apply1 (int i, nv x, nv y)
65 {
66 mat3x3 &m = *this;
67
68 nv v = m[i][0] * x + m[i][1] * y + m[i][2];
69 nv w = m[2][0] * x + m[2][1] * y + m[2][2];
70
71 return v * (1. / w);
72 }
73
74 static mat3x3 translate (nv x, nv y);
75 static mat3x3 scale (nv s, nv t);
76 static mat3x3 rotate (nv phi);
77 };
78
79 mat3x3
80 mat3x3::inverse ()
81 {
82 mat3x3 &m = *this;
83 mat3x3 inv;
84
85 nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
86 nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
87 nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
88
89 nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
90
91 inv[0][0] = invdet * s0;
92 inv[0][1] = invdet * s1;
93 inv[0][2] = invdet * s2;
94
95 inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
96 inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
97 inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
98
99 inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
100 inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
101 inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
102
103 return inv;
104 }
105
106 static mat3x3
107 operator *(const mat3x3 &a, const mat3x3 &b)
108 {
109 mat3x3 r;
110
111 for (int i = 0; i < 3; ++i)
112 for (int j = 0; j < 3; ++j)
113 r[i][j] = a[i][0] * b[0][j]
114 + a[i][1] * b[1][j]
115 + a[i][2] * b[2][j];
116
117 return r;
118 }
119
120 mat3x3
121 mat3x3::translate (nv x, nv y)
122 {
123 return mat3x3 (
124 1, 0, x,
125 0, 1, y,
126 0, 0, 1
127 );
128 }
129
130 mat3x3
131 mat3x3::scale (nv s, nv t)
132 {
133 return mat3x3 (
134 s, 0, 0,
135 0, t, 0,
136 0, 0, 1
137 );
138 }
139
140 // clockwise
141 mat3x3
142 mat3x3::rotate (nv phi)
143 {
144 nv s = sin (phi);
145 nv c = cos (phi);
146
147 return mat3x3 (
148 c, -s, 0,
149 s, c, 0,
150 0, 0, 1
151 );
152 }
153
154 struct composer
155 {
156 rxvt_img *srcimg, *dstimg;
157 Picture src, dst, msk;
158 Display *dpy;
159
160 ecb_noinline
161 composer (rxvt_img *srcimg, rxvt_img *dstimg = 0)
162 : srcimg (srcimg), dstimg (dstimg), msk (0)
163 {
164 if (!this->dstimg)
165 this->dstimg = srcimg->new_empty ();
166 else if (!this->dstimg->pm) // somewhat unsatisfying
167 this->dstimg->alloc ();
168
169 dpy = srcimg->s->dpy;
170 src = srcimg->picture ();
171 dst = this->dstimg->picture ();
172 }
173
174 ecb_noinline
175 void mask (bool rgb = true, int w = 1, int h = 1)
176 {
177 Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, w, h, rgb ? 32 : 8);
178
179 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, rgb ? PictStandardARGB32 : PictStandardA8);
180 XRenderPictureAttributes pa;
181 pa.repeat = RepeatNormal;
182 pa.component_alpha = rgb;
183 msk = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa);
184
185 XFreePixmap (dpy, pixmap);
186
187 ecb_assume (msk);
188 }
189
190 // CreateSolidFill creates a very very very weird picture
191 void mask (const rgba &c)
192 {
193 // the casts are needed in C++11 (see 8.5.1)
194 XRenderColor rc = {
195 (unsigned short)(c.r * c.a / 65535),
196 (unsigned short)(c.g * c.a / 65535),
197 (unsigned short)(c.b * c.a / 65535),
198 c.a
199 };
200 msk = XRenderCreateSolidFill (dpy, &rc);
201 ecb_assume (msk);
202 }
203
204 void fill (const rgba &c)
205 {
206 XRenderColor rc = {
207 (unsigned short)(c.r * c.a / 65535),
208 (unsigned short)(c.g * c.a / 65535),
209 (unsigned short)(c.b * c.a / 65535),
210 c.a
211 };
212
213 XRenderFillRectangle (dpy, PictOpSrc, msk, &rc, 0, 0, 1, 1);
214 }
215
216 operator rxvt_img *()
217 {
218 return dstimg;
219 }
220
221 ecb_noinline
222 ~composer ()
223 {
224 XRenderFreePicture (dpy, src);
225 XRenderFreePicture (dpy, dst);
226 if (msk) XRenderFreePicture (dpy, msk);
227 }
228 };
229}
230
231static XRenderPictFormat *
232find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
233{
234 if (format->direct.alphaMask)
235 return format; // already has alpha
236
237 // try to find a suitable alpha format, one bit alpha is enough for our purposes
238 if (format->type == PictTypeDirect)
239 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
240 if (f->direct.alphaMask
241 && f->type == PictTypeDirect
242 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
243 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
244 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
245 return f;
246
247 // should be a very good fallback
248 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
249}
250
7rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) 251rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
8: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), 252: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), ref(0) 253 pm(0), ref(0)
10{ 254{
11} 255}
… …
17} 261}
18 262
19rxvt_img * 263rxvt_img *
20rxvt_img::new_from_root (rxvt_screen *s) 264rxvt_img::new_from_root (rxvt_screen *s)
21{ 265{
22 Display *dpy = s->display->dpy; 266 Display *dpy = s->dpy;
23 unsigned int root_pm_w, root_pm_h; 267 unsigned int root_pm_w, root_pm_h;
24 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); 268 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
25 if (root_pixmap == None) 269 if (root_pixmap == None)
26 root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); 270 root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
27 271
28 if (root_pixmap == None) 272 if (root_pixmap == None)
29 return 0; 273 return 0;
30 274
31 Window wdummy; 275 Window wdummy;
… …
49 img->ref->ours = false; 293 img->ref->ours = false;
50 294
51 return img; 295 return img;
52} 296}
53 297
298# if HAVE_PIXBUF
299
54rxvt_img * 300rxvt_img *
55rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) 301rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
56{ 302{
57 Display *dpy = s->display->dpy; 303 Display *dpy = s->dpy;
58 304
59 int width = gdk_pixbuf_get_width (pb); 305 int width = gdk_pixbuf_get_width (pb);
60 int height = gdk_pixbuf_get_height (pb); 306 int height = gdk_pixbuf_get_height (pb);
61 307
62 if (width > 32767 || height > 32767) // well, we *could* upload in chunks 308 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
63 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); 309 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
64 310
65 // since we require rgb24/argb32 formats from xrender we assume 311 // since we require rgb24/argb32 formats from xrender we assume
66 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender 312 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
67 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
68 313
69 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; 314 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
70 315
71 XImage xi; 316 XImage xi;
72 317
… …
76 xi.format = ZPixmap; 321 xi.format = ZPixmap;
77 xi.byte_order = ImageByteOrder (dpy); 322 xi.byte_order = ImageByteOrder (dpy);
78 xi.bitmap_unit = 0; //XY only, unused 323 xi.bitmap_unit = 0; //XY only, unused
79 xi.bitmap_bit_order = 0; //XY only, unused 324 xi.bitmap_bit_order = 0; //XY only, unused
80 xi.bitmap_pad = BitmapPad (dpy); 325 xi.bitmap_pad = BitmapPad (dpy);
81 xi.depth = depth; 326 xi.depth = 32;
82 xi.bytes_per_line = 0; 327 xi.bytes_per_line = 0;
83 xi.bits_per_pixel = 32; //Z only 328 xi.bits_per_pixel = 32; //Z only
84 xi.red_mask = 0x00000000; //Z only, unused 329 xi.red_mask = 0x00000000; //Z only, unused
85 xi.green_mask = 0x00000000; //Z only, unused 330 xi.green_mask = 0x00000000; //Z only, unused
86 xi.blue_mask = 0x00000000; //Z only, unused 331 xi.blue_mask = 0x00000000; //Z only, unused
… …
95 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); 340 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96 341
97 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); 342 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
98 343
99 int rowstride = gdk_pixbuf_get_rowstride (pb); 344 int rowstride = gdk_pixbuf_get_rowstride (pb);
100 345 bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
101 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
102 unsigned char *row = gdk_pixbuf_get_pixels (pb); 346 unsigned char *row = gdk_pixbuf_get_pixels (pb);
347
103 char *line = xi.data; 348 char *line = xi.data;
104 349
105 for (int y = 0; y < height; y++) 350 for (int y = 0; y < height; y++)
106 { 351 {
107 unsigned char *src = row; 352 unsigned char *src = row;
108 uint32_t *dst = (uint32_t *)line; 353 uint32_t *dst = (uint32_t *)line;
109 354
110 if (depth == 24)
111 for (int x = 0; x < width; x++) 355 for (int x = 0; x < width; x++)
112 { 356 {
113 uint8_t r = *src++; 357 uint8_t r = *src++;
114 uint8_t g = *src++; 358 uint8_t g = *src++;
115 uint8_t b = *src++; 359 uint8_t b = *src++;
360 uint8_t a = *src;
116 361
362 // this is done so it can be jump-free, but newer gcc's clone inner the loop
363 a = pb_has_alpha ? a : 255;
364 src += pb_has_alpha;
365
366 r = (r * a + 127) / 255;
367 g = (g * a + 127) / 255;
368 b = (b * a + 127) / 255;
369
117 uint32_t v = (r << 16) | (g << 8) | b; 370 uint32_t v = (a << 24) | (r << 16) | (g << 8) | b;
118 371
119 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) 372 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
120 v = ecb_bswap32 (v); 373 v = ecb_bswap32 (v);
121 374
122 *dst++ = v; 375 *dst++ = v;
123 } 376 }
124 else
125 for (int x = 0; x < width; x++)
126 {
127 uint32_t v = *(uint32_t *)src; src += 4;
128
129 if (ecb_big_endian ())
130 v = ecb_bswap32 (v);
131
132 v = ecb_rotl32 (v, 8); // abgr to bgra
133
134 if (!byte_order_mismatch)
135 v = ecb_bswap32 (v);
136
137 *dst++ = v;
138 }
139 377
140 row += rowstride; 378 row += rowstride;
141 line += xi.bytes_per_line; 379 line += xi.bytes_per_line;
142 } 380 }
143 381
144 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); 382 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
145 img->alloc (); 383 img->alloc ();
146 384
147 GC gc = XCreateGC (dpy, img->pm, 0, 0); 385 GC gc = XCreateGC (dpy, img->pm, 0, 0);
148 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); 386 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
149 XFreeGC (dpy, gc); 387 XFreeGC (dpy, gc);
… …
167 g_object_unref (pb); 405 g_object_unref (pb);
168 406
169 return img; 407 return img;
170} 408}
171 409
410# endif
411
172void 412void
173rxvt_img::destroy () 413rxvt_img::destroy ()
174{ 414{
175 if (--ref->cnt) 415 if (--ref->cnt)
176 return; 416 return;
177 417
178 if (pm && ref->ours) 418 if (pm && ref->ours)
179 XFreePixmap (s->display->dpy, pm); 419 XFreePixmap (s->dpy, pm);
180 420
181 delete ref; 421 delete ref;
182} 422}
183 423
184rxvt_img::~rxvt_img () 424rxvt_img::~rxvt_img ()
… …
187} 427}
188 428
189void 429void
190rxvt_img::alloc () 430rxvt_img::alloc ()
191{ 431{
192 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 432 pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
193 ref = new pixref (w, h); 433 ref = new pixref (w, h);
194} 434}
195 435
436rxvt_img *
437rxvt_img::new_empty ()
438{
439 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
440 img->alloc ();
441
442 return img;
443}
444
196Picture 445Picture
197rxvt_img::src_picture () 446rxvt_img::picture ()
198{ 447{
199 Display *dpy = s->display->dpy; 448 Display *dpy = s->dpy;
200 449
201 XRenderPictureAttributes pa; 450 XRenderPictureAttributes pa;
202 pa.repeat = repeat; 451 pa.repeat = repeat;
203 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 452 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
204 453
… …
209rxvt_img::unshare () 458rxvt_img::unshare ()
210{ 459{
211 if (ref->cnt == 1 && ref->ours) 460 if (ref->cnt == 1 && ref->ours)
212 return; 461 return;
213 462
214 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); 463 Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
215 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 464 GC gc = XCreateGC (s->dpy, pm, 0, 0);
216 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); 465 XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
217 XFreeGC (s->display->dpy, gc); 466 XFreeGC (s->dpy, gc);
218 467
219 destroy (); 468 destroy ();
220 469
221 pm = pm2; 470 pm = pm2;
222 ref = new pixref (ref->w, ref->h); 471 ref = new pixref (ref->w, ref->h);
223} 472}
224 473
225void 474void
475rxvt_img::fill (const rgba &c, int x, int y, int w, int h)
476{
477 XRenderColor rc = { c.r, c.g, c.b, c.a };
478
479 Display *dpy = s->dpy;
480 Picture src = picture ();
481 XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h);
482 XRenderFreePicture (dpy, src);
483}
484
485void
226rxvt_img::fill (const rxvt_color &c) 486rxvt_img::fill (const rgba &c)
227{ 487{
228 XGCValues gcv; 488 fill (c, 0, 0, w, h);
229 gcv.foreground = c; 489}
230 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 490
231 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 491void
232 XFreeGC (s->display->dpy, gc); 492rxvt_img::add_alpha ()
493{
494 if (format->direct.alphaMask)
495 return;
496
497 composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat));
498
499 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
500
501 rxvt_img *img = cc;
502
503 ::swap (img->ref, ref);
504 ::swap (img->pm , pm );
505
506 delete img;
233} 507}
234 508
235static void 509static void
236get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 510get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
237{ 511{
238 double sigma = radius / 2.0; 512 nv sigma = radius / 2.0;
239 double scale = sqrt (2.0 * M_PI) * sigma; 513 nv scale = sqrt (2.0 * M_PI) * sigma;
240 double sum = 0.0; 514 nv sum = 0.0;
241 515
242 for (int i = 0; i < width; i++) 516 for (int i = 0; i < width; i++)
243 { 517 {
244 double x = i - width / 2; 518 nv x = i - width / 2;
245 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 519 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
246 sum += kernel[i]; 520 sum += kernel[i];
247 } 521 }
248 522
249 params[0] = XDoubleToFixed (width); 523 params[0] = XDoubleToFixed (width);
… …
257rxvt_img::blur (int rh, int rv) 531rxvt_img::blur (int rh, int rv)
258{ 532{
259 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 533 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
260 return clone (); 534 return clone ();
261 535
262 Display *dpy = s->display->dpy; 536 Display *dpy = s->dpy;
263 int size = max (rh, rv) * 2 + 1; 537 int size = max (rh, rv) * 2 + 1;
264 double *kernel = (double *)malloc (size * sizeof (double)); 538 nv *kernel = (nv *)malloc (size * sizeof (nv));
265 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 539 XFixed *params = rxvt_temp_buf<XFixed> (size + 2);
266 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); 540 rxvt_img *img = new_empty ();
267 img->alloc ();
268 541
269 XRenderPictureAttributes pa; 542 XRenderPictureAttributes pa;
270 pa.repeat = RepeatPad; 543 pa.repeat = RepeatPad;
271 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 544 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
272 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); 545 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
… …
306 0, 0, 579 0, 0,
307 w, h); 580 w, h);
308 } 581 }
309 582
310 free (kernel); 583 free (kernel);
311 free (params); 584
312 XRenderFreePicture (dpy, src); 585 XRenderFreePicture (dpy, src);
313 XRenderFreePicture (dpy, dst); 586 XRenderFreePicture (dpy, dst);
314 XRenderFreePicture (dpy, tmp); 587 XRenderFreePicture (dpy, tmp);
315 588
316 return img; 589 return img;
317} 590}
318 591
319static Picture 592rxvt_img *
320create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 593rxvt_img::muladd (nv mul, nv add)
321{ 594{
322 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 595 // STEP 1: double the image width, fill all odd columns with white (==1)
323 596
324 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 597 composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
325 XRenderPictureAttributes pa;
326 pa.repeat = True;
327 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
328 598
329 XFreePixmap (dpy, pixmap); 599 // why the hell does XRenderSetPictureTransform want a writable matrix :(
600 // that keeps us from just static const'ing this matrix.
601 XTransform h_double = {
602 0x08000, 0, 0,
603 0, 0x10000, 0,
604 0, 0, 0x10000
605 };
330 606
331 return mask; 607 XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
332} 608 XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
609 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
333 610
334static void 611 cc.mask (false, 2, 1);
612
613 static const XRenderColor c0 = { 0, 0, 0, 0 };
614 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
615 static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
616 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
617
618 Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
619
620 XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
621
622 XRenderFreePicture (cc.dpy, white);
623
624 // STEP 2: convolve the image with a 3x1 filter
625 // a 2x1 filter would obviously suffice, but given the total lack of specification
626 // for xrender, I expect different xrender implementations to randomly diverge.
627 // we also halve the image, and hope for the best (again, for lack of specs).
628 composer cc2 (cc.dstimg);
629
630 XFixed kernel [] = {
631 XDoubleToFixed (3), XDoubleToFixed (1),
632 XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
633 };
634
635 XTransform h_halve = {
636 0x20000, 0, 0,
637 0, 0x10000, 0,
638 0, 0, 0x10000
639 };
640
641 XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
642 XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
643 XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
644
645 XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
646
647 return cc2;
648}
649
650ecb_noinline static void
335extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) 651extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
336{ 652{
337 int32_t x = clamp (c, cl0, cl1); 653 int32_t x = clamp (c, cl0, cl1);
338 c -= x; 654 c -= x;
339 xc = x; 655 xc = x;
340} 656}
341 657
342static bool 658ecb_noinline static bool
343extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa) 659extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa)
344{ 660{
345 extract (cl0, cl1, r, xr); 661 extract (cl0, cl1, r, xr);
346 extract (cl0, cl1, g, xg); 662 extract (cl0, cl1, g, xg);
347 extract (cl0, cl1, b, xb); 663 extract (cl0, cl1, b, xb);
… …
353void 669void
354rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) 670rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
355{ 671{
356 unshare (); 672 unshare ();
357 673
358 Display *dpy = s->display->dpy; 674 Display *dpy = s->dpy;
359 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 675 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
360 676
677 // loop should not be needed for brightness, as only -1..1 makes sense
361 while (r | g | b | a) 678 //while (r | g | b | a)
362 { 679 {
363 unsigned short xr, xg, xb, xa; 680 unsigned short xr, xg, xb, xa;
364 XRenderColor mask_c; 681 XRenderColor mask_c;
365 682
366 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) 683 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
… …
368 685
369 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) 686 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
370 { 687 {
371 XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; 688 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
372 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); 689 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
373 mask_c.red = -mask_c.red; 690 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
374 mask_c.green = -mask_c.green; 691 mask_c.green = -mask_c.green;
375 mask_c.blue = -mask_c.blue; 692 mask_c.blue = -mask_c.blue;
376 mask_c.alpha = -mask_c.alpha; 693 mask_c.alpha = -mask_c.alpha;
377 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); 694 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
378 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); 695 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
379 } 696 }
380 } 697 }
381 698
382
383 XRenderFreePicture (dpy, dst); 699 XRenderFreePicture (dpy, dst);
384} 700}
385 701
386void 702void
387rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) 703rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
388{ 704{
389 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 705 if (r < 0 || g < 0 || b < 0 || a < 0)
390 { 706 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
391 rxvt_warn ("rxvt_img::contrast operation not supported on this display, RENDER extension too old.\n"); 707
392 return; 708 // premultiply (yeah, these are not exact, sue me or fix it)
709 r = (r * (a >> 8)) >> 8;
710 g = (g * (a >> 8)) >> 8;
711 b = (b * (a >> 8)) >> 8;
712
713 composer cc (this);
714 rxvt_img *img = cc;
715 img->fill (rgba (0, 0, 0, 0));
716
717 cc.mask (true);
718
719 //TODO: this operator does not yet implement some useful contrast
720 while (r | g | b | a)
393 } 721 {
722 unsigned short xr, xg, xb, xa;
723 XRenderColor mask_c;
394 724
725 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
726 {
727 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
728 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
729 }
730 }
731
732 ::swap (img->ref, ref);
733 ::swap (img->pm , pm );
734
735 delete img;
736}
737
738void
739rxvt_img::draw (rxvt_img *img, int op, nv mask)
740{
395 unshare (); 741 unshare ();
396 742
397 Display *dpy = s->display->dpy; 743 composer cc (img, this);
398 Picture src = create_xrender_mask (dpy, pm, True); 744
399 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 745 if (mask != 1.)
746 cc.mask (rgba (0, 0, 0, float_to_component (mask)));
400 747
401 XRenderColor mask_c; 748 XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
402 mask_c.red = r;
403 mask_c.green = g;
404 mask_c.blue = b;
405 mask_c.alpha = a;
406 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
407
408 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
409
410 XRenderFreePicture (dpy, src);
411 XRenderFreePicture (dpy, dst);
412} 749}
413 750
414rxvt_img * 751rxvt_img *
415rxvt_img::clone () 752rxvt_img::clone ()
416{ 753{
417 return new rxvt_img (*this); 754 return new rxvt_img (*this);
418}
419
420static XRenderPictFormat *
421find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
422{
423 if (format->direct.alphaMask)
424 return format; // already has alpha
425
426 // try to find a suitable alpha format, one bit alpha is enough for our purposes
427 if (format->type == PictTypeDirect)
428 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
429 if (f->direct.alphaMask
430 && f->type == PictTypeDirect
431 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
432 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
433 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
434 return f;
435
436 // should be a very good fallback
437 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
438} 755}
439 756
440rxvt_img * 757rxvt_img *
441rxvt_img::reify () 758rxvt_img::reify ()
442{ 759{
443 if (x == 0 && y == 0 && w == ref->w && h == ref->h) 760 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
444 return clone (); 761 return clone ();
445
446 Display *dpy = s->display->dpy;
447 762
448 // add an alpha channel if... 763 // add an alpha channel if...
449 bool alpha = !format->direct.alphaMask // pixmap has none yet 764 bool alpha = !format->direct.alphaMask // pixmap has none yet
450 && (x || y) // we need one because of non-zero offset 765 && (x || y) // we need one because of non-zero offset
451 && repeat == RepeatNone; // and we have no good pixels to fill with 766 && repeat == RepeatNone; // and we have no good pixels to fill with
452 767
453 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); 768 composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
454 img->alloc (); 769 0, 0, w, h, repeat));
455 770
456 Picture src = src_picture (); 771 if (repeat == RepeatNone)
457 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
458
459 if (alpha)
460 { 772 {
461 XRenderColor rc = { 0, 0, 0, 0 }; 773 XRenderColor rc = { 0, 0, 0, 0 };
462 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles 774 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
463 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); 775 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
464 } 776 }
465 else 777 else
466 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); 778 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
467 779
468 XRenderFreePicture (dpy, src);
469 XRenderFreePicture (dpy, dst);
470
471 return img; 780 return cc;
472} 781}
473 782
474rxvt_img * 783rxvt_img *
475rxvt_img::sub_rect (int x, int y, int width, int height) 784rxvt_img::sub_rect (int x, int y, int width, int height)
476{ 785{
477 rxvt_img *img = clone (); 786 rxvt_img *img = clone ();
478 787
479 img->x += x; 788 img->x -= x;
480 img->y += y; 789 img->y -= y;
481 790
482 if (w != width || h != height) 791 if (w != width || h != height)
483 { 792 {
484 img->w = width; 793 img->w = width;
485 img->h = height; 794 img->h = height;
… …
491 800
492 return img; 801 return img;
493} 802}
494 803
495rxvt_img * 804rxvt_img *
496rxvt_img::transform (int new_width, int new_height, double matrix[9]) 805rxvt_img::transform (const nv matrix[3][3])
497{ 806{
498 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); 807 return transform (mat3x3 (&matrix[0][0]));
499 img->alloc (); 808}
500 809
501 Display *dpy = s->display->dpy; 810rxvt_img *
502 Picture src = src_picture (); 811rxvt_img::transform (const nv *matrix)
503 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 812{
813 mat3x3 m (matrix);
814
815 // calculate new pixel bounding box coordinates
816 nv rmin[2], rmax[2];
817
818 for (int i = 0; i < 2; ++i)
819 {
820 nv v;
821
822 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
823 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
824 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
825 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
826 }
827
828 float sx = rmin [0] - x;
829 float sy = rmin [1] - y;
830
831 // TODO: adjust matrix for subpixel accuracy
832 int nx = floor (rmin [0]);
833 int ny = floor (rmin [1]);
834
835 int new_width = ceil (rmax [0] - rmin [0]);
836 int new_height = ceil (rmax [1] - rmin [1]);
837
838 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
839
840 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
504 841
505 XTransform xfrm; 842 XTransform xfrm;
506 843
507 for (int i = 0; i < 3; ++i) 844 for (int i = 0; i < 3; ++i)
508 for (int j = 0; j < 3; ++j) 845 for (int j = 0; j < 3; ++j)
509 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 846 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
510 847
511 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
512 xfrm.matrix [1][2] -= XDoubleToFixed (y);
513
514 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 848 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
515 XRenderSetPictureTransform (dpy, src, &xfrm); 849 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
516 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 850 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
517 851
518 XRenderFreePicture (dpy, src);
519 XRenderFreePicture (dpy, dst);
520
521 return img; 852 return cc;
522} 853}
523 854
524rxvt_img * 855rxvt_img *
525rxvt_img::scale (int new_width, int new_height) 856rxvt_img::scale (int new_width, int new_height)
526{ 857{
527 if (w == new_width && h == new_height) 858 if (w == new_width && h == new_height)
528 return clone (); 859 return clone ();
529 860
530 double matrix[9] = {
531 w / (double)new_width, 0, 0,
532 0, h / (double)new_height, 0,
533 0, 0, 1
534 };
535
536 int old_repeat_mode = repeat; 861 int old_repeat_mode = repeat;
537 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems 862 repeat = RepeatPad; // not right, but xrender can't properly scale it seems
538 863
539 rxvt_img *img = transform (new_width, new_height, matrix); 864 rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
540 865
541 repeat = old_repeat_mode; 866 repeat = old_repeat_mode;
542 img->repeat = repeat; 867 img->repeat = repeat;
543 868
544 return img; 869 return img;
545} 870}
546 871
547rxvt_img * 872rxvt_img *
548rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) 873rxvt_img::rotate (int cx, int cy, nv phi)
549{ 874{
550 double s = sin (phi); 875 move (-cx, -cy);
551 double c = cos (phi); 876 rxvt_img *img = transform (mat3x3::rotate (phi));
877 move ( cx, cy);
878 img->move (cx, cy);
552 879
553 double matrix[9] = { 880 return img;
554 c, -s, -c * x + s * y + x,
555 s, c, -s * x - c * y + y,
556 0, 0, 1
557 };
558
559 return transform (new_width, new_height, matrix);
560} 881}
561 882
562rxvt_img * 883rxvt_img *
563rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) 884rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
564{ 885{
565 if (new_format == format) 886 if (new_format == format)
566 return clone (); 887 return clone ();
567 888
568 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); 889 composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
569 img->alloc ();
570 890
571 Display *dpy = s->display->dpy;
572 Picture src = src_picture ();
573 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
574 int op = PictOpSrc; 891 int op = PictOpSrc;
575 892
576 if (format->direct.alphaMask && !new_format->direct.alphaMask) 893 if (format->direct.alphaMask && !new_format->direct.alphaMask)
577 { 894 {
578 // does it have to be that complicated 895 // does it have to be that complicated
579 rgba c;
580 bg.get (c);
581
582 XRenderColor rc = { c.r, c.g, c.b, 0xffff }; 896 XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
583 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); 897 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
584 898
585 op = PictOpOver; 899 op = PictOpOver;
586 } 900 }
587 901
588 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 902 XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
589 903
590 XRenderFreePicture (dpy, src); 904 return cc;
591 XRenderFreePicture (dpy, dst); 905}
906
907rxvt_img *
908rxvt_img::tint (const rgba &c)
909{
910 composer cc (this);
911 cc.mask (true);
912 cc.fill (c);
913
914 XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
915
916 return cc;
917}
918
919rxvt_img *
920rxvt_img::shade (nv factor, rgba c)
921{
922 clamp_it (factor, -1., 1.);
923 factor++;
924
925 if (factor > 1)
926 {
927 c.r = c.r * (2 - factor);
928 c.g = c.g * (2 - factor);
929 c.b = c.b * (2 - factor);
930 }
931 else
932 {
933 c.r = c.r * factor;
934 c.g = c.g * factor;
935 c.b = c.b * factor;
936 }
937
938 rxvt_img *img = this->tint (c);
939
940 if (factor > 1)
941 {
942 c.a = 0xffff;
943 c.r =
944 c.g =
945 c.b = 0xffff * (factor - 1);
946
947 img->brightness (c.r, c.g, c.b, c.a);
948 }
592 949
593 return img; 950 return img;
594} 951}
595 952
596rxvt_img * 953rxvt_img *
597rxvt_img::blend (rxvt_img *img, double factor) 954rxvt_img::filter (const char *name, int nparams, nv *params)
598{ 955{
599 rxvt_img *img2 = clone (); 956 composer cc (this);
600 Display *dpy = s->display->dpy;
601 Picture src = img->src_picture ();
602 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
603 Picture mask = create_xrender_mask (dpy, img->pm, False);
604 957
605 XRenderColor mask_c; 958 XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
606 959
607 mask_c.alpha = float_to_component (factor); 960 for (int i = 0; i < nparams; ++i)
608 mask_c.red = 961 xparams [i] = XDoubleToFixed (params [i]);
609 mask_c.green =
610 mask_c.blue = 0;
611 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
612 962
963 XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
964
613 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); 965 XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
614 966
615 XRenderFreePicture (dpy, src);
616 XRenderFreePicture (dpy, dst);
617 XRenderFreePicture (dpy, mask);
618
619 return img2; 967 return cc;
620} 968}
621 969
622#endif 970#endif
623 971

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