1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "X11SurfaceData.h"
27 #include "GraphicsPrimitiveMgr.h"
28 #include "Region.h"
29 #include "Trace.h"
30
31 /* Needed to define intptr_t */
32 #include "gdefs.h"
33
34 #include "jni_util.h"
35 #include "jvm_md.h"
36 #include "awt_Component.h"
37 #include "awt_GraphicsEnv.h"
38
39 #include <dlfcn.h>
40
41 #ifndef HEADLESS
42 static JDgaLibInfo DgaLibInfoStub;
43 static JDgaLibInfo theJDgaInfo;
44 static JDgaLibInfo *pJDgaInfo = &DgaLibInfoStub;
45
46
47 /**
48 * This file contains support code for loops using the SurfaceData
49 * interface to talk to an X11 drawable from native code.
50 */
51
52 typedef struct _X11RIPrivate {
53 jint lockType;
54 jint lockFlags;
55 XImage *img;
56 int x, y;
57 } X11RIPrivate;
58
59 #define XSD_MAX(a,b) ((a) > (b) ? (a) : (b))
60 #define XSD_MIN(a,b) ((a) < (b) ? (a) : (b))
61
62 static LockFunc X11SD_Lock;
63 static GetRasInfoFunc X11SD_GetRasInfo;
64 static UnlockFunc X11SD_Unlock;
65 static DisposeFunc X11SD_Dispose;
66 static GetPixmapBgFunc X11SD_GetPixmapWithBg;
67 static ReleasePixmapBgFunc X11SD_ReleasePixmapWithBg;
68 extern int XShmAttachXErrHandler(Display *display, XErrorEvent *xerr);
69 extern AwtGraphicsConfigDataPtr
70 getGraphicsConfigFromComponentPeer(JNIEnv *env, jobject this);
71 extern struct X11GraphicsConfigIDs x11GraphicsConfigIDs;
72
73 static int X11SD_FindClip(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
74 X11SDOps *xsdo);
75 static int X11SD_ClipToRoot(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
76 X11SDOps *xsdo);
77 static void X11SD_SwapBytes(X11SDOps *xsdo, XImage *img, int depth, int bpp);
78 static XImage * X11SD_GetImage(JNIEnv *env, X11SDOps *xsdo,
79 SurfaceDataBounds *bounds,
80 jint lockFlags);
81
82 extern jfieldID validID;
83
84 static int nativeByteOrder;
85 static jboolean dgaAvailable = JNI_FALSE;
86 static jboolean useDGAWithPixmaps = JNI_FALSE;
87 static jclass xorCompClass;
88
89 jint useMitShmExt = CANT_USE_MITSHM;
90 jint useMitShmPixmaps = CANT_USE_MITSHM;
91 jint forceSharedPixmaps = JNI_FALSE;
92 int mitShmPermissionMask = MITSHM_PERM_OWNER;
93
94 /* Cached shared image, one for all surface datas. */
95 static XImage * cachedXImage;
96
97 #endif /* !HEADLESS */
98
99 jboolean XShared_initIDs(JNIEnv *env, jboolean allowShmPixmaps)
100 {
101 #ifndef HEADLESS
102 union {
103 char c[4];
104 int i;
105 } endian;
106
107 endian.i = 0xff000000;
108 nativeByteOrder = (endian.c[0]) ? MSBFirst : LSBFirst;
109
110 dgaAvailable = JNI_FALSE;
111
112 cachedXImage = NULL;
113
114 if (sizeof(X11RIPrivate) > SD_RASINFO_PRIVATE_SIZE) {
115 JNU_ThrowInternalError(env, "Private RasInfo structure too large!");
116 return JNI_FALSE;
117 }
118
119 #ifdef MITSHM
120 if (getenv("NO_AWT_MITSHM") == NULL &&
121 getenv("NO_J2D_MITSHM") == NULL) {
122 char * force;
123 char * permission = getenv("J2D_MITSHM_PERMISSION");
124 if (permission != NULL) {
125 if (strcmp(permission, "common") == 0) {
126 mitShmPermissionMask = MITSHM_PERM_COMMON;
127 }
128 }
129
130 TryInitMITShm(env, &useMitShmExt, &useMitShmPixmaps);
131
132 if(allowShmPixmaps) {
133 useMitShmPixmaps = (useMitShmPixmaps == CAN_USE_MITSHM);
134 force = getenv("J2D_PIXMAPS");
135 if (force != NULL) {
136 if (useMitShmPixmaps && (strcmp(force, "shared") == 0)) {
137 forceSharedPixmaps = JNI_TRUE;
138 } else if (strcmp(force, "server") == 0) {
139 useMitShmPixmaps = JNI_FALSE;
140 }
141 }
142 }else {
143 useMitShmPixmaps = JNI_FALSE;
144 }
145 }
146 #endif /* MITSHM */
147
148 #endif /* !HEADLESS */
149
150 return JNI_TRUE;
151 }
152
153
154 /*
155 * Class: sun_java2d_x11_X11SurfaceData
156 * Method: initIDs
157 * Signature: (Ljava/lang/Class;Z)V
158 */
159 JNIEXPORT void JNICALL
160 Java_sun_java2d_x11_X11SurfaceData_initIDs(JNIEnv *env, jclass xsd,
161 jclass XORComp, jboolean tryDGA)
162 {
163 #ifndef HEADLESS
164 if(XShared_initIDs(env, JNI_TRUE))
165 {
166 void *lib = 0;
167
168 xorCompClass = (*env)->NewGlobalRef(env, XORComp);
169
170 if (tryDGA && (getenv("NO_J2D_DGA") == NULL)) {
171 /* we use RTLD_NOW because of bug 4032715 */
172 lib = dlopen(JNI_LIB_NAME("sunwjdga"), RTLD_NOW);
173 }
174
175 if (lib != NULL) {
176 JDgaStatus ret = JDGA_FAILED;
177 void *sym = dlsym(lib, "JDgaLibInit");
178 if (sym != NULL) {
179 theJDgaInfo.display = awt_display;
180 AWT_LOCK();
181 ret = (*(JDgaLibInitFunc *)sym)(env, &theJDgaInfo);
182 AWT_UNLOCK();
183 }
184 if (ret == JDGA_SUCCESS) {
185 pJDgaInfo = &theJDgaInfo;
186 dgaAvailable = JNI_TRUE;
187 useDGAWithPixmaps = (getenv("USE_DGA_PIXMAPS") != NULL);
188 } else {
189 dlclose(lib);
190 lib = NULL;
191 }
192 }
193 }
194 #endif /* !HEADLESS */
195 }
196
197 /*
198 * Class: sun_java2d_x11_X11SurfaceData
199 * Method: isDrawableValid
200 * Signature: ()Z
201 */
202 JNIEXPORT jboolean JNICALL
203 Java_sun_java2d_x11_XSurfaceData_isDrawableValid(JNIEnv *env, jobject this)
204 {
205 jboolean ret = JNI_FALSE;
206
207 #ifndef HEADLESS
208 X11SDOps *xsdo = X11SurfaceData_GetOps(env, this);
209
210 AWT_LOCK();
211 if (xsdo->drawable != 0 || X11SD_InitWindow(env, xsdo) == SD_SUCCESS) {
212 ret = JNI_TRUE;
213 }
214 AWT_UNLOCK();
215 #endif /* !HEADLESS */
216
217 return ret;
218 }
219
220 /*
221 * Class: sun_java2d_x11_X11SurfaceData
222 * Method: isShmPMAvailable
223 * Signature: ()Z
224 */
225 JNIEXPORT jboolean JNICALL
226 Java_sun_java2d_x11_X11SurfaceData_isShmPMAvailable(JNIEnv *env, jobject this)
227 {
228 #if defined(HEADLESS) || !defined(MITSHM)
229 return JNI_FALSE;
230 #else
231 return (jboolean)useMitShmPixmaps;
232 #endif /* HEADLESS, MITSHM */
233 }
234
235 /*
236 * Class: sun_java2d_x11_X11SurfaceData
237 * Method: isDgaAvailable
238 * Signature: ()Z
239 */
240 JNIEXPORT jboolean JNICALL
241 Java_sun_java2d_x11_X11SurfaceData_isDgaAvailable(JNIEnv *env, jobject this)
242 {
243 #if defined(HEADLESS) || defined(__linux__)
244 return JNI_FALSE;
245 #else
246 return dgaAvailable;
247 #endif /* HEADLESS */
248 }
249
250 /*
251 * Class: sun_java2d_x11_X11SurfaceData
252 * Method: initOps
253 * Signature: (Ljava/lang/Object;I)V
254 */
255 JNIEXPORT void JNICALL
256 Java_sun_java2d_x11_XSurfaceData_initOps(JNIEnv *env, jobject xsd,
257 jobject peer,
258 jobject graphicsConfig, jint depth)
259 {
260 #ifndef HEADLESS
261 X11SDOps *xsdo = (X11SDOps*)SurfaceData_InitOps(env, xsd, sizeof(X11SDOps));
262 jboolean hasException;
263 if (xsdo == NULL) {
264 JNU_ThrowOutOfMemoryError(env, "Initialization of SurfaceData failed.");
265 return;
266 }
267 xsdo->sdOps.Lock = X11SD_Lock;
268 xsdo->sdOps.GetRasInfo = X11SD_GetRasInfo;
269 xsdo->sdOps.Unlock = X11SD_Unlock;
270 xsdo->sdOps.Dispose = X11SD_Dispose;
271 xsdo->GetPixmapWithBg = X11SD_GetPixmapWithBg;
272 xsdo->ReleasePixmapWithBg = X11SD_ReleasePixmapWithBg;
273 xsdo->widget = NULL;
274 if (peer != NULL) {
275 xsdo->drawable = JNU_CallMethodByName(env, &hasException, peer, "getWindow", "()J").j;
276 if (hasException) {
277 return;
278 }
279 } else {
280 xsdo->drawable = 0;
281 }
282 xsdo->depth = depth;
283 xsdo->dgaAvailable = dgaAvailable;
284 xsdo->isPixmap = JNI_FALSE;
285 xsdo->bitmask = 0;
286 xsdo->bgPixel = 0;
287 xsdo->isBgInitialized = JNI_FALSE;
288 #ifdef MITSHM
289 xsdo->shmPMData.shmSegInfo = NULL;
290 xsdo->shmPMData.xRequestSent = JNI_FALSE;
291 xsdo->shmPMData.pmSize = 0;
292 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
293 xsdo->shmPMData.pixmap = 0;
294 xsdo->shmPMData.shmPixmap = 0;
295 xsdo->shmPMData.numBltsSinceRead = 0;
296 xsdo->shmPMData.pixelsReadSinceBlt = 0;
297 xsdo->shmPMData.numBltsThreshold = 2;
298 #endif /* MITSHM */
299
300 xsdo->configData = (AwtGraphicsConfigDataPtr)
301 JNU_GetLongFieldAsPtr(env,
302 graphicsConfig,
303 x11GraphicsConfigIDs.aData);
304 if (xsdo->configData == NULL) {
305 JNU_ThrowNullPointerException(env,
306 "Native GraphicsConfig data block missing");
307 return;
308 }
309 if (depth > 12) {
310 xsdo->pixelmask = (xsdo->configData->awt_visInfo.red_mask |
311 xsdo->configData->awt_visInfo.green_mask |
312 xsdo->configData->awt_visInfo.blue_mask);
313 } else if (depth == 12) {
314 xsdo->pixelmask = 0xfff;
315 } else {
316 xsdo->pixelmask = 0xff;
317 }
318
319 xsdo->xrPic = None;
320 #endif /* !HEADLESS */
321 }
322
323 /*
324 * Class: sun_java2d_x11_X11SurfaceData
325 * Method: flushNativeSurface
326 * Signature: ()V
327 */
328 JNIEXPORT void JNICALL
329 Java_sun_java2d_x11_XSurfaceData_flushNativeSurface(JNIEnv *env, jobject xsd)
330 {
331 #ifndef HEADLESS
332 SurfaceDataOps *ops = SurfaceData_GetOps(env, xsd);
333
334 if (ops != NULL) {
335 X11SD_Dispose(env, ops);
336 }
337 #endif /* !HEADLESS */
338 }
339
340
341 JNIEXPORT X11SDOps * JNICALL
342 X11SurfaceData_GetOps(JNIEnv *env, jobject sData)
343 {
344 #ifdef HEADLESS
345 return NULL;
346 #else
347 SurfaceDataOps *ops = SurfaceData_GetOps(env, sData);
348 if (ops != NULL && ops->Lock != X11SD_Lock) {
349 SurfaceData_ThrowInvalidPipeException(env, "not an X11 SurfaceData");
350 ops = NULL;
351 }
352 return (X11SDOps *) ops;
353 #endif /* !HEADLESS */
354 }
355
356 /*
357 * Method for disposing X11SD-specific data
358 */
359 static void
360 X11SD_Dispose(JNIEnv *env, SurfaceDataOps *ops)
361 {
362 #ifndef HEADLESS
363 /* ops is assumed non-null as it is checked in SurfaceData_DisposeOps */
364 X11SDOps * xsdo = (X11SDOps*)ops;
365
366 AWT_LOCK();
367
368 xsdo->invalid = JNI_TRUE;
369
370 if (xsdo->xrPic != None) {
371 XRenderFreePicture(awt_display, xsdo->xrPic);
372 xsdo->xrPic = None;
373 }
374
375 if (xsdo->isPixmap == JNI_TRUE && xsdo->drawable != 0) {
376 #ifdef MITSHM
377 if (xsdo->shmPMData.shmSegInfo != NULL) {
378 X11SD_DropSharedSegment(xsdo->shmPMData.shmSegInfo);
379 xsdo->shmPMData.shmSegInfo = NULL;
380 }
381 if (xsdo->shmPMData.pixmap) {
382 XFreePixmap(awt_display, xsdo->shmPMData.pixmap);
383 xsdo->shmPMData.pixmap = 0;
384 }
385 if (xsdo->shmPMData.shmPixmap) {
386 XFreePixmap(awt_display, xsdo->shmPMData.shmPixmap);
387 xsdo->shmPMData.shmPixmap = 0;
388 }
389 #else
390 XFreePixmap(awt_display, xsdo->drawable);
391 #endif /* MITSHM */
392 xsdo->drawable = 0;
393 }
394 if (xsdo->bitmask != 0) {
395 XFreePixmap(awt_display, xsdo->bitmask);
396 xsdo->bitmask = 0;
397 }
398 if (xsdo->javaGC != NULL) {
399 XFreeGC(awt_display, xsdo->javaGC);
400 xsdo->javaGC = NULL;
401 }
402 if (xsdo->cachedGC != NULL) {
403 XFreeGC(awt_display, xsdo->cachedGC);
404 xsdo->cachedGC = NULL;
405 }
406
407 if(xsdo->xrPic != None) {
408 XRenderFreePicture(awt_display, xsdo->xrPic);
409 }
410
411 AWT_UNLOCK();
412 #endif /* !HEADLESS */
413 }
414 /*
415 * Class: sun_java2d_x11_X11SurfaceData
416 * Method: setInvalid
417 * Signature: ()V
418 */
419 JNIEXPORT void JNICALL
420 Java_sun_java2d_x11_XSurfaceData_setInvalid(JNIEnv *env, jobject xsd)
421 {
422 #ifndef HEADLESS
423 X11SDOps *xsdo = (X11SDOps *) SurfaceData_GetOps(env, xsd);
424
425 if (xsdo != NULL) {
426 xsdo->invalid = JNI_TRUE;
427 }
428 #endif /* !HEADLESS */
429 }
430
431
432 jboolean XShared_initSurface(JNIEnv *env, X11SDOps *xsdo, jint depth, jint width, jint height, jlong drawable)
433 {
434 #ifndef HEADLESS
435
436 if (drawable != (jlong)0) {
437 /* Double-buffering */
438 xsdo->drawable = drawable;
439 xsdo->isPixmap = JNI_FALSE;
440 } else {
441 xsdo->isPixmap = JNI_TRUE;
442 /* REMIND: workaround for bug 4420220 on pgx32 boards:
443 don't use DGA with pixmaps unless USE_DGA_PIXMAPS is set.
444 */
445 xsdo->dgaAvailable = useDGAWithPixmaps;
446
447 xsdo->pmWidth = width;
448 xsdo->pmHeight = height;
449
450 #ifdef MITSHM
451 xsdo->shmPMData.pmSize = width * height * depth;
452 xsdo->shmPMData.pixelsReadThreshold = width * height / 8;
453 if (forceSharedPixmaps) {
454 AWT_LOCK();
455 xsdo->drawable = X11SD_CreateSharedPixmap(xsdo);
456 AWT_UNLOCK();
457 if (xsdo->drawable) {
458 xsdo->shmPMData.usingShmPixmap = JNI_TRUE;
459 xsdo->shmPMData.shmPixmap = xsdo->drawable;
460 return JNI_TRUE;
461 }
462 }
463 #endif /* MITSHM */
464
465 AWT_LOCK();
466 xsdo->drawable =
467 XCreatePixmap(awt_display,
468 RootWindow(awt_display,
469 xsdo->configData->awt_visInfo.screen),
470 width, height, depth);
471 AWT_UNLOCK();
472 #ifdef MITSHM
473 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
474 xsdo->shmPMData.pixmap = xsdo->drawable;
475 #endif /* MITSHM */
476 }
477 if (xsdo->drawable == 0) {
478 JNU_ThrowOutOfMemoryError(env,
479 "Can't create offscreen surface");
480 return JNI_FALSE;
481 }
482
483 #endif /* !HEADLESS */
484 return JNI_TRUE;
485 }
486
487
488 /*
489 * Class: sun_java2d_x11_X11SurfaceData
490 * Method: initSurface
491 * Signature: ()V
492 */
493 JNIEXPORT void JNICALL
494 Java_sun_java2d_x11_X11SurfaceData_initSurface(JNIEnv *env, jclass xsd,
495 jint depth,
496 jint width, jint height,
497 jlong drawable)
498 {
499 #ifndef HEADLESS
500 X11SDOps *xsdo = X11SurfaceData_GetOps(env, xsd);
501 if (xsdo == NULL) {
502 return;
503 }
504
505 if (xsdo->configData->awt_cmap == (Colormap)NULL) {
506 awtJNI_CreateColorData(env, xsdo->configData, 1);
507 }
508 /* color_data will be initialized in awtJNI_CreateColorData for
509 8-bit visuals */
510 xsdo->cData = xsdo->configData->color_data;
511
512 XShared_initSurface(env, xsdo, depth, width, height, drawable);
513 xsdo->xrPic = NULL;
514 #endif /* !HEADLESS */
515 }
516
517 #ifndef HEADLESS
518
519 #ifdef MITSHM
520
521 void X11SD_DropSharedSegment(XShmSegmentInfo *shminfo)
522 {
523 if (shminfo != NULL) {
524 XShmDetach(awt_display, shminfo);
525 shmdt(shminfo->shmaddr);
526 /* REMIND: we don't need shmctl(shminfo->shmid, IPC_RMID, 0); here. */
527 /* Check X11SD_CreateSharedImage() for the explanation */
528 }
529 }
530
531 XImage* X11SD_CreateSharedImage(X11SDOps *xsdo,
532 jint width, jint height)
533 {
534 XImage *img = NULL;
535 XShmSegmentInfo *shminfo;
536
537 shminfo = malloc(sizeof(XShmSegmentInfo));
538 if (shminfo == NULL) {
539 return NULL;
540 }
541 memset(shminfo, 0, sizeof(XShmSegmentInfo));
542
543 img = XShmCreateImage(awt_display, xsdo->configData->awt_visInfo.visual,
544 xsdo->depth, ZPixmap, NULL, shminfo,
545 width, height);
546 if (img == NULL) {
547 free((void *)shminfo);
548 return NULL;
549 }
550 shminfo->shmid =
551 shmget(IPC_PRIVATE, height * img->bytes_per_line,
552 IPC_CREAT|mitShmPermissionMask);
553 if (shminfo->shmid < 0) {
554 J2dRlsTraceLn1(J2D_TRACE_ERROR,
555 "X11SD_SetupSharedSegment shmget has failed: %s",
556 strerror(errno));
557 free((void *)shminfo);
558 XDestroyImage(img);
559 return NULL;
560 }
561
562 shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
563 if (shminfo->shmaddr == ((char *) -1)) {
564 shmctl(shminfo->shmid, IPC_RMID, 0);
565 J2dRlsTraceLn1(J2D_TRACE_ERROR,
566 "X11SD_SetupSharedSegment shmat has failed: %s",
567 strerror(errno));
568 free((void *)shminfo);
569 XDestroyImage(img);
570 return NULL;
571 }
572
573 shminfo->readOnly = False;
574
575 resetXShmAttachFailed();
576 EXEC_WITH_XERROR_HANDLER(XShmAttachXErrHandler,
577 XShmAttach(awt_display, shminfo));
578
579 /*
580 * Once the XSync round trip has finished then we
581 * can get rid of the id so that this segment does not stick
582 * around after we go away, holding system resources.
583 */
584 shmctl(shminfo->shmid, IPC_RMID, 0);
585
586 if (isXShmAttachFailed() == JNI_TRUE) {
587 J2dRlsTraceLn1(J2D_TRACE_ERROR,
588 "X11SD_SetupSharedSegment XShmAttach has failed: %s",
589 strerror(errno));
590 shmdt(shminfo->shmaddr);
591 free((void *)shminfo);
592 XDestroyImage(img);
593 return NULL;
594 }
595
596 img->data = shminfo->shmaddr;
597 img->obdata = (char *)shminfo;
598
599 return img;
600 }
601
602 XImage* X11SD_GetSharedImage(X11SDOps *xsdo, jint width, jint height,
603 jint maxWidth, jint maxHeight, jboolean readBits)
604 {
605 XImage * retImage = NULL;
606 if (cachedXImage != NULL &&
607 X11SD_CachedXImageFits(width, height, maxWidth, maxHeight,
608 xsdo->depth, readBits)) {
609 /* sync so previous data gets flushed */
610 XSync(awt_display, False);
611 retImage = cachedXImage;
612 cachedXImage = (XImage *)NULL;
613 } else if (width * height * xsdo->depth > 0x10000) {
614 retImage = X11SD_CreateSharedImage(xsdo, width, height);
615 }
616 return retImage;
617 }
618
619 Drawable X11SD_CreateSharedPixmap(X11SDOps *xsdo)
620 {
621 XShmSegmentInfo *shminfo;
622 XImage *img = NULL;
623 Drawable pixmap;
624 int scan;
625 int width = xsdo->pmWidth;
626 int height = xsdo->pmHeight;
627
628 if (xsdo->shmPMData.pmSize < 0x10000) {
629 /* only use shared mem pixmaps for relatively big images */
630 return 0;
631 }
632
633 /* need to create shared(!) image to get bytes_per_line */
634 img = X11SD_CreateSharedImage(xsdo, width, height);
635 if (img == NULL) {
636 return 0;
637 }
638 scan = img->bytes_per_line;
639 shminfo = (XShmSegmentInfo*)img->obdata;
640 XFree(img);
641
642 pixmap =
643 XShmCreatePixmap(awt_display,
644 RootWindow(awt_display,
645 xsdo->configData->awt_visInfo.screen),
646 shminfo->shmaddr, shminfo,
647 width, height, xsdo->depth);
648 if (pixmap == 0) {
649 X11SD_DropSharedSegment(shminfo);
650 return 0;
651 }
652
653 xsdo->shmPMData.shmSegInfo = shminfo;
654 xsdo->shmPMData.bytesPerLine = scan;
655 return pixmap;
656 }
657
658 void X11SD_PuntPixmap(X11SDOps *xsdo, jint width, jint height)
659 {
660
661 if (useMitShmPixmaps != CAN_USE_MITSHM || forceSharedPixmaps) {
662 return;
663 }
664
665 /* we wouldn't be here if it's a shared pixmap, so no check
666 * for !usingShmPixmap.
667 */
668
669 xsdo->shmPMData.numBltsSinceRead = 0;
670
671 xsdo->shmPMData.pixelsReadSinceBlt += width * height;
672 if (xsdo->shmPMData.pixelsReadSinceBlt >
673 xsdo->shmPMData.pixelsReadThreshold) {
674 if (!xsdo->shmPMData.shmPixmap) {
675 xsdo->shmPMData.shmPixmap =
676 X11SD_CreateSharedPixmap(xsdo);
677 }
678 if (xsdo->shmPMData.shmPixmap) {
679 GC xgc = XCreateGC(awt_display, xsdo->shmPMData.shmPixmap, 0L, NULL);
680 if (xgc != NULL) {
681 xsdo->shmPMData.usingShmPixmap = JNI_TRUE;
682 xsdo->drawable = xsdo->shmPMData.shmPixmap;
683 XCopyArea(awt_display,
684 xsdo->shmPMData.pixmap, xsdo->drawable, xgc,
685 0, 0, xsdo->pmWidth, xsdo->pmHeight, 0, 0);
686 XSync(awt_display, False);
687 xsdo->shmPMData.xRequestSent = JNI_FALSE;
688 XFreeGC(awt_display, xgc);
689 }
690 }
691 }
692 }
693
694 void X11SD_UnPuntPixmap(X11SDOps *xsdo)
695 {
696 if (useMitShmPixmaps != CAN_USE_MITSHM || forceSharedPixmaps) {
697 return;
698 }
699 xsdo->shmPMData.pixelsReadSinceBlt = 0;
700 if (xsdo->shmPMData.numBltsSinceRead >=
701 xsdo->shmPMData.numBltsThreshold)
702 {
703 if (xsdo->shmPMData.usingShmPixmap) {
704 if (!xsdo->shmPMData.pixmap) {
705 xsdo->shmPMData.pixmap =
706 XCreatePixmap(awt_display,
707 RootWindow(awt_display,
708 xsdo->configData->awt_visInfo.screen),
709 xsdo->pmWidth, xsdo->pmHeight, xsdo->depth);
710 }
711 if (xsdo->shmPMData.pixmap) {
712 GC xgc = XCreateGC(awt_display, xsdo->shmPMData.pixmap, 0L, NULL);
713 if (xgc != NULL) {
714 xsdo->drawable = xsdo->shmPMData.pixmap;
715 XCopyArea(awt_display,
716 xsdo->shmPMData.shmPixmap, xsdo->drawable, xgc,
717 0, 0, xsdo->pmWidth, xsdo->pmHeight, 0, 0);
718 XSync(awt_display, False);
719 XFreeGC(awt_display, xgc);
720 xsdo->shmPMData.xRequestSent = JNI_FALSE;
721 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
722 xsdo->shmPMData.numBltsThreshold *= 2;
723 }
724 }
725 }
726 } else {
727 xsdo->shmPMData.numBltsSinceRead++;
728 }
729 }
730
731 /**
732 * Determines if the cached image can be used for current operation.
733 * If the image is to be used to be read into by XShmGetImage,
734 * it must be close enough to avoid excessive reading from the screen;
735 * otherwise it should just be at least the size requested.
736 */
737 jboolean X11SD_CachedXImageFits(jint width, jint height, jint maxWidth,
738 jint maxHeight, jint depth, jboolean readBits)
739 {
740 /* we assume here that the cached image exists */
741 jint imgWidth = cachedXImage->width;
742 jint imgHeight = cachedXImage->height;
743
744 if (imgWidth < width || imgHeight < height || depth != cachedXImage->depth) {
745 /* doesn't fit if any of the cached image dimensions is smaller
746 or the depths are different */
747 return JNI_FALSE;
748 }
749
750 if (!readBits) {
751 /* Not reading from this image, so any image at least of the
752 size requested will do */
753 return JNI_TRUE;
754 }
755
756 if ((imgWidth < width + 64) && (imgHeight < height + 64)
757 && imgWidth <= maxWidth && imgHeight <= maxHeight)
758 {
759 /* Cached image's width/height shouldn't be more than 64 pixels
760 * larger than requested, because the region in XShmGetImage
761 * can't be specified and we don't want to read too much.
762 * Furthermore it has to be smaller than maxWidth/Height
763 * so drawables are not read out of bounds.
764 */
765 return JNI_TRUE;
766 }
767
768 return JNI_FALSE;
769 }
770 #endif /* MITSHM */
771
772 jint X11SD_InitWindow(JNIEnv *env, X11SDOps *xsdo)
773 {
774 if (xsdo->isPixmap == JNI_TRUE) {
775 return SD_FAILURE;
776 }
777 xsdo->cData = xsdo->configData->color_data;
778
779 return SD_SUCCESS;
780 }
781
782 static jint X11SD_Lock(JNIEnv *env,
783 SurfaceDataOps *ops,
784 SurfaceDataRasInfo *pRasInfo,
785 jint lockflags)
786 {
787 X11SDOps *xsdo = (X11SDOps *) ops;
788 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
789 int ret = SD_SUCCESS;
790
791 AWT_LOCK();
792
793 if (xsdo->invalid) {
794 AWT_UNLOCK();
795 SurfaceData_ThrowInvalidPipeException(env, "bounds changed");
796 return SD_FAILURE;
797 }
798 xsdo->cData = xsdo->configData->color_data;
799 if (xsdo->drawable == 0 && X11SD_InitWindow(env, xsdo) == SD_FAILURE) {
800 AWT_UNLOCK();
801 return SD_FAILURE;
802 }
803 if ((lockflags & SD_LOCK_LUT) != 0 &&
804 (xsdo->cData == NULL ||
805 xsdo->cData->awt_icmLUT == NULL))
806 {
807 AWT_UNLOCK();
808 JNU_ThrowNullPointerException(env, "colormap lookup table");
809 return SD_FAILURE;
810 }
811 if ((lockflags & SD_LOCK_INVCOLOR) != 0 &&
812 (xsdo->cData == NULL ||
813 xsdo->cData->img_clr_tbl == NULL ||
814 xsdo->cData->img_oda_red == NULL ||
815 xsdo->cData->img_oda_green == NULL ||
816 xsdo->cData->img_oda_blue == NULL))
817 {
818 AWT_UNLOCK();
819 JNU_ThrowNullPointerException(env, "inverse colormap lookup table");
820 return SD_FAILURE;
821 }
822 if ((lockflags & SD_LOCK_INVGRAY) != 0 &&
823 (xsdo->cData == NULL ||
824 xsdo->cData->pGrayInverseLutData == NULL))
825 {
826 AWT_UNLOCK();
827 JNU_ThrowNullPointerException(env, "inverse gray lookup table");
828 return SD_FAILURE;
829 }
830 if (xsdo->dgaAvailable && (lockflags & (SD_LOCK_RD_WR))) {
831 int dgaret;
832
833 dgaret = (*pJDgaInfo->pGetLock)(env, awt_display, &xsdo->dgaDev,
834 xsdo->drawable, &xsdo->surfInfo,
835 pRasInfo->bounds.x1,
836 pRasInfo->bounds.y1,
837 pRasInfo->bounds.x2,
838 pRasInfo->bounds.y2);
839 if (dgaret == JDGA_SUCCESS) {
840 int wx = xsdo->surfInfo.window.lox;
841 int wy = xsdo->surfInfo.window.loy;
842 pRasInfo->bounds.x1 = xsdo->surfInfo.visible.lox - wx;
843 pRasInfo->bounds.y1 = xsdo->surfInfo.visible.loy - wy;
844 pRasInfo->bounds.x2 = xsdo->surfInfo.visible.hix - wx;
845 pRasInfo->bounds.y2 = xsdo->surfInfo.visible.hiy - wy;
846 xpriv->lockType = X11SD_LOCK_BY_DGA;
847 xpriv->lockFlags = lockflags;
848 return SD_SUCCESS;
849 } else if (dgaret == JDGA_UNAVAILABLE) {
850 xsdo->dgaAvailable = JNI_FALSE;
851 }
852 }
853 if (lockflags & SD_LOCK_RD_WR) {
854 if (lockflags & SD_LOCK_FASTEST) {
855 ret = SD_SLOWLOCK;
856 }
857 xpriv->lockType = X11SD_LOCK_BY_XIMAGE;
858 if (xsdo->isPixmap) {
859 #ifdef MITSHM
860 if (xsdo->shmPMData.usingShmPixmap) {
861 xpriv->lockType = X11SD_LOCK_BY_SHMEM;
862 }
863 #endif /* MITSHM */
864 if (pRasInfo->bounds.x1 < 0) {
865 pRasInfo->bounds.x1 = 0;
866 }
867 if (pRasInfo->bounds.y1 < 0) {
868 pRasInfo->bounds.y1 = 0;
869 }
870 if (pRasInfo->bounds.x2 > xsdo->pmWidth) {
871 pRasInfo->bounds.x2 = xsdo->pmWidth;
872 }
873 if (pRasInfo->bounds.y2 > xsdo->pmHeight) {
874 pRasInfo->bounds.y2 = xsdo->pmHeight;
875 }
876 }
877 } else {
878 /* They didn't lock for anything - we won't give them anything */
879 xpriv->lockType = X11SD_LOCK_BY_NULL;
880 }
881 xpriv->lockFlags = lockflags;
882 xpriv->img = NULL;
883
884 return ret;
885 /* AWT_UNLOCK() called in Unlock */
886 }
887
888 static void X11SD_GetRasInfo(JNIEnv *env,
889 SurfaceDataOps *ops,
890 SurfaceDataRasInfo *pRasInfo)
891 {
892 X11SDOps *xsdo = (X11SDOps *) ops;
893 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
894 jint lockFlags = xpriv->lockFlags;
895 jint depth = xsdo->depth;
896 int mult = xsdo->configData->pixelStride;
897
898 if (xsdo->dgaAvailable &&
899 xpriv->lockType == X11SD_LOCK_BY_XIMAGE &&
900 (lockFlags & SD_LOCK_FASTEST))
901 {
902 /* Try one more time to use DGA (now with smaller bounds)... */
903 int dgaret;
904
905 dgaret = (*pJDgaInfo->pGetLock)(env, awt_display, &xsdo->dgaDev,
906 xsdo->drawable, &xsdo->surfInfo,
907 pRasInfo->bounds.x1,
908 pRasInfo->bounds.y1,
909 pRasInfo->bounds.x2,
910 pRasInfo->bounds.y2);
911 if (dgaret == JDGA_SUCCESS) {
912 int wx = xsdo->surfInfo.window.lox;
913 int wy = xsdo->surfInfo.window.loy;
914 pRasInfo->bounds.x1 = xsdo->surfInfo.visible.lox - wx;
915 pRasInfo->bounds.y1 = xsdo->surfInfo.visible.loy - wy;
916 pRasInfo->bounds.x2 = xsdo->surfInfo.visible.hix - wx;
917 pRasInfo->bounds.y2 = xsdo->surfInfo.visible.hiy - wy;
918 xpriv->lockType = X11SD_LOCK_BY_DGA;
919 } else if (dgaret == JDGA_UNAVAILABLE) {
920 xsdo->dgaAvailable = JNI_FALSE;
921 }
922 }
923
924 if (xpriv->lockType == X11SD_LOCK_BY_DGA) {
925 int scan = xsdo->surfInfo.surfaceScan;
926 int wx = xsdo->surfInfo.window.lox;
927 int wy = xsdo->surfInfo.window.loy;
928 pRasInfo->rasBase =
929 (void *)(((uintptr_t) xsdo->surfInfo.basePtr) + (scan*wy + wx) * mult);
930 pRasInfo->pixelStride = mult;
931 pRasInfo->pixelBitOffset = 0;
932 pRasInfo->scanStride = scan * mult;
933 #ifdef MITSHM
934 } else if (xpriv->lockType == X11SD_LOCK_BY_SHMEM) {
935 if (xsdo->shmPMData.xRequestSent == JNI_TRUE) {
936 /* need to sync before using shared mem pixmap
937 if any x calls were issued for this pixmap */
938 XSync(awt_display, False);
939 xsdo->shmPMData.xRequestSent = JNI_FALSE;
940 }
941 xpriv->x = pRasInfo->bounds.x1;
942 xpriv->y = pRasInfo->bounds.y1;
943 pRasInfo->rasBase = xsdo->shmPMData.shmSegInfo->shmaddr;
944 pRasInfo->pixelStride = mult;
945 pRasInfo->pixelBitOffset = 0;
946 pRasInfo->scanStride = xsdo->shmPMData.bytesPerLine;
947 #endif /* MITSHM */
948 } else if (xpriv->lockType == X11SD_LOCK_BY_XIMAGE) {
949 int x, y, w, h;
950 x = pRasInfo->bounds.x1;
951 y = pRasInfo->bounds.y1;
952 w = pRasInfo->bounds.x2 - x;
953 h = pRasInfo->bounds.y2 - y;
954
955 xpriv->img = X11SD_GetImage(env, xsdo, &pRasInfo->bounds, lockFlags);
956 if (xpriv->img) {
957 int scan = xpriv->img->bytes_per_line;
958 xpriv->x = x;
959 xpriv->y = y;
960 pRasInfo->rasBase = xpriv->img->data - x * mult - y * scan;
961 pRasInfo->pixelStride = mult;
962 pRasInfo->pixelBitOffset = 0;
963 pRasInfo->scanStride = scan;
964 } else {
965 pRasInfo->rasBase = NULL;
966 pRasInfo->pixelStride = 0;
967 pRasInfo->pixelBitOffset = 0;
968 pRasInfo->scanStride = 0;
969 }
970 } else {
971 /* They didn't lock for anything - we won't give them anything */
972 pRasInfo->rasBase = NULL;
973 pRasInfo->pixelStride = 0;
974 pRasInfo->pixelBitOffset = 0;
975 pRasInfo->scanStride = 0;
976 }
977 if (lockFlags & SD_LOCK_LUT) {
978 pRasInfo->lutBase = (jint *) xsdo->cData->awt_icmLUT;
979 pRasInfo->lutSize = xsdo->cData->awt_numICMcolors;
980 } else {
981 pRasInfo->lutBase = NULL;
982 pRasInfo->lutSize = 0;
983 }
984 if (lockFlags & SD_LOCK_INVCOLOR) {
985 pRasInfo->invColorTable = xsdo->cData->img_clr_tbl;
986 pRasInfo->redErrTable = xsdo->cData->img_oda_red;
987 pRasInfo->grnErrTable = xsdo->cData->img_oda_green;
988 pRasInfo->bluErrTable = xsdo->cData->img_oda_blue;
989 } else {
990 pRasInfo->invColorTable = NULL;
991 pRasInfo->redErrTable = NULL;
992 pRasInfo->grnErrTable = NULL;
993 pRasInfo->bluErrTable = NULL;
994 }
995 if (lockFlags & SD_LOCK_INVGRAY) {
996 pRasInfo->invGrayTable = xsdo->cData->pGrayInverseLutData;
997 } else {
998 pRasInfo->invGrayTable = NULL;
999 }
1000 }
1001
1002 static void X11SD_Unlock(JNIEnv *env,
1003 SurfaceDataOps *ops,
1004 SurfaceDataRasInfo *pRasInfo)
1005 {
1006 X11SDOps *xsdo = (X11SDOps *) ops;
1007 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
1008
1009 if (xpriv->lockType == X11SD_LOCK_BY_DGA) {
1010 (*pJDgaInfo->pReleaseLock)(env, xsdo->dgaDev, xsdo->drawable);
1011 } else if (xpriv->lockType == X11SD_LOCK_BY_XIMAGE &&
1012 xpriv->img != NULL)
1013 {
1014 if (xpriv->lockFlags & SD_LOCK_WRITE) {
1015 int x = xpriv->x;
1016 int y = xpriv->y;
1017 int w = pRasInfo->bounds.x2 - x;
1018 int h = pRasInfo->bounds.y2 - y;
1019 Drawable drawable = xsdo->drawable;
1020 GC xgc = xsdo->cachedGC;
1021 if (xgc == NULL) {
1022 xsdo->cachedGC = xgc =
1023 XCreateGC(awt_display, drawable, 0L, NULL);
1024 }
1025
1026 if (xpriv->img->byte_order != nativeByteOrder) {
1027 /* switching bytes back in 24 and 32 bpp cases. */
1028 /* For 16 bit XLib will switch for us. */
1029 if (xsdo->depth > 16) {
1030 X11SD_SwapBytes(xsdo, xpriv->img, xsdo->depth,
1031 xsdo->configData->awtImage->wsImageFormat.bits_per_pixel);
1032 }
1033 }
1034
1035 #ifdef MITSHM
1036 if (xpriv->img->obdata != NULL) {
1037 XShmPutImage(awt_display, drawable, xgc,
1038 xpriv->img, 0, 0, x, y, w, h, False);
1039 XFlush(awt_display);
1040 } else {
1041 XPutImage(awt_display, drawable, xgc,
1042 xpriv->img, 0, 0, x, y, w, h);
1043 }
1044 if (xsdo->shmPMData.usingShmPixmap) {
1045 xsdo->shmPMData.xRequestSent = JNI_TRUE;
1046 }
1047 #else
1048 XPutImage(awt_display, drawable, xgc,
1049 xpriv->img, 0, 0, x, y, w, h);
1050 #endif /* MITSHM */
1051
1052 (*pJDgaInfo->pXRequestSent)(env, xsdo->dgaDev, drawable);
1053 }
1054 X11SD_DisposeOrCacheXImage(xpriv->img);
1055 xpriv->img = (XImage *)NULL;
1056 }
1057 /* the background pixel is not valid anymore */
1058 if (xpriv->lockFlags & SD_LOCK_WRITE) {
1059 xsdo->isBgInitialized = JNI_FALSE;
1060 }
1061 xpriv->lockType = X11SD_LOCK_UNLOCKED;
1062 AWT_UNLOCK();
1063 }
1064
1065 static int
1066 X11SD_ClipToRoot(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
1067 X11SDOps *xsdo)
1068 {
1069 Position x1=0, y1=0, x2=0, y2=0;
1070 int tmpx, tmpy;
1071 Window tmpchild;
1072
1073 Window window = (Window)(xsdo->drawable); /* is always a Window */
1074 XWindowAttributes winAttr;
1075
1076 Status status = XGetWindowAttributes(awt_display, window, &winAttr);
1077 if (status == 0) {
1078 /* Failure, X window no longer valid. */
1079 return FALSE;
1080 }
1081 if (!XTranslateCoordinates(awt_display, window,
1082 RootWindowOfScreen(winAttr.screen),
1083 0, 0, &tmpx, &tmpy, &tmpchild)) {
1084 return FALSE;
1085 }
1086
1087 x1 = -(x1 + tmpx);
1088 y1 = -(y1 + tmpy);
1089
1090 x2 = x1 + DisplayWidth(awt_display, xsdo->configData->awt_visInfo.screen);
1091 y2 = y1 + DisplayHeight(awt_display, xsdo->configData->awt_visInfo.screen);
1092
1093 x1 = XSD_MAX(bounds->x1, x1);
1094 y1 = XSD_MAX(bounds->y1, y1);
1095 x2 = XSD_MIN(bounds->x2, x2);
1096 y2 = XSD_MIN(bounds->y2, y2);
1097 if ((x1 >= x2) || (y1 >= y2)) {
1098 return FALSE;
1099 }
1100 b->x1 = x1;
1101 b->y1 = y1;
1102 b->x2 = x2;
1103 b->y2 = y2;
1104
1105 return TRUE;
1106 }
1107
1108 /*
1109 * x1, y1, x2, y2 - our rectangle in the coord system of
1110 * the widget
1111 * px1, xy1, px2, py2 - current parent rect coords in the
1112 * same system
1113 */
1114 static int
1115 X11SD_FindClip(SurfaceDataBounds *b, SurfaceDataBounds *bounds, X11SDOps *xsdo)
1116 {
1117 return TRUE;
1118 }
1119
1120 static void
1121 X11SD_SwapBytes(X11SDOps *xsdo, XImage * img, int depth, int bpp) {
1122 int lengthInBytes = img->height * img->bytes_per_line;
1123 int i;
1124
1125 switch (depth) {
1126 case 12:
1127 case 15:
1128 case 16:
1129 {
1130 /* AB -> BA */
1131 unsigned short *d = (unsigned short *)img->data;
1132 unsigned short t;
1133 for (i = 0; i < lengthInBytes/2; i++) {
1134 t = *d;
1135 *d++ = (t >> 8) | (t << 8);
1136 }
1137 img->byte_order = nativeByteOrder;
1138 img->bitmap_bit_order = nativeByteOrder;
1139 break;
1140 }
1141 case 24:
1142 {
1143 /* ABC -> CBA */
1144 if (bpp == 24) {
1145 // 4517321: Only swap if we have a "real" ThreeByteBgr
1146 // visual (denoted by a red_mask of 0xff). Due to ambiguity
1147 // in the X11 spec, it appears that the swap is not required
1148 // on Linux configurations that use 24 bits per pixel (denoted
1149 // by a red_mask of 0xff0000).
1150 if (xsdo->configData->awt_visInfo.red_mask == 0xff) {
1151 int scan = img->bytes_per_line;
1152 unsigned char *d = (unsigned char *) img->data;
1153 unsigned char *d1;
1154 unsigned int t;
1155 int j;
1156
1157 for (i = 0; i < img->height; i++, d += scan) {
1158 d1 = d;
1159 for (j = 0; j < img->width; j++, d1 += 3) {
1160 /* not obvious opt from XLib src */
1161 t = d1[0]; d1[0] = d1[2]; d1[2] = t;
1162 }
1163 }
1164 }
1165 break;
1166 }
1167 }
1168 /* FALL THROUGH for 32-bit case */
1169 case 32:
1170 {
1171 /* ABCD -> DCBA */
1172 unsigned int *d = (unsigned int *) img->data;
1173 unsigned int t;
1174 for (i = 0; i < lengthInBytes/4; i++) {
1175 t = *d;
1176 *d++ = ((t >> 24) |
1177 ((t >> 8) & 0xff00) |
1178 ((t & 0xff00) << 8) |
1179 (t << 24));
1180 }
1181 break;
1182 }
1183 }
1184 }
1185
1186 static XImage * X11SD_GetImage(JNIEnv *env, X11SDOps *xsdo,
1187 SurfaceDataBounds *bounds,
1188 jint lockFlags)
1189 {
1190 int x, y, w, h, maxWidth, maxHeight;
1191 int scan;
1192 XImage * img = NULL;
1193 Drawable drawable;
1194 int depth = xsdo->depth;
1195 int mult = xsdo->configData->pixelStride;
1196 int pad = (mult == 3) ? 32 : mult * 8; // pad must be 8, 16, or 32
1197 jboolean readBits = lockFlags & SD_LOCK_NEED_PIXELS;
1198
1199 x = bounds->x1;
1200 y = bounds->y1;
1201 w = bounds->x2 - x;
1202 h = bounds->y2 - y;
1203
1204 #ifdef MITSHM
1205 if (useMitShmExt == CAN_USE_MITSHM) {
1206 if (xsdo->isPixmap) {
1207 if (readBits) {
1208 X11SD_PuntPixmap(xsdo, w, h);
1209 }
1210 maxWidth = xsdo->pmWidth;
1211 maxHeight = xsdo->pmHeight;
1212 } else {
1213 XWindowAttributes winAttr;
1214 if (XGetWindowAttributes(awt_display,
1215 (Window) xsdo->drawable, &winAttr) != 0) {
1216 maxWidth = winAttr.width;
1217 maxHeight = winAttr.height;
1218 } else {
1219 /* XGWA failed which isn't a good thing. Defaulting to using
1220 * x,y means that after the subtraction of these we will use
1221 * w=0, h=0 which is a reasonable default on such a failure.
1222 */
1223 maxWidth = x;
1224 maxHeight = y;
1225 }
1226 }
1227 maxWidth -= x;
1228 maxHeight -= y;
1229
1230 img = X11SD_GetSharedImage(xsdo, w, h, maxWidth, maxHeight, readBits);
1231 }
1232 #endif /* MITSHM */
1233 drawable = xsdo->drawable;
1234
1235 if (readBits) {
1236 #ifdef MITSHM
1237 if (img != NULL) {
1238 if (!XShmGetImage(awt_display, drawable, img, x, y, -1)) {
1239 X11SD_DisposeOrCacheXImage(img);
1240 img = NULL;
1241 }
1242 }
1243 if (img == NULL) {
1244 img = XGetImage(awt_display, drawable, x, y, w, h, -1, ZPixmap);
1245 if (img != NULL) {
1246 img->obdata = NULL;
1247 }
1248 }
1249 #else
1250 img = XGetImage(awt_display, drawable, x, y, w, h, -1, ZPixmap);
1251 #endif /* MITSHM */
1252 if (img == NULL) {
1253 SurfaceDataBounds temp;
1254 img = XCreateImage(awt_display,
1255 xsdo->configData->awt_visInfo.visual,
1256 depth, ZPixmap, 0, NULL, w, h, pad, 0);
1257 if (img == NULL) {
1258 return NULL;
1259 }
1260
1261 scan = img->bytes_per_line;
1262 img->data = malloc(h * scan);
1263 if (img->data == NULL) {
1264 XFree(img);
1265 return NULL;
1266 }
1267
1268 if (xsdo->isPixmap == JNI_FALSE &&
1269 X11SD_ClipToRoot(&temp, bounds, xsdo)) {
1270
1271 XImage * temp_image;
1272 temp_image = XGetImage(awt_display, drawable,
1273 temp.x1, temp.y1,
1274 temp.x2 - temp.x1,
1275 temp.y2 - temp.y1,
1276 -1, ZPixmap);
1277 if (temp_image == NULL) {
1278 XGrabServer(awt_display);
1279 if (X11SD_FindClip(&temp, bounds, xsdo)) {
1280 temp_image =
1281 XGetImage(awt_display, drawable,
1282 temp.x1, temp.y1,
1283 temp.x2 - temp.x1,
1284 temp.y2 - temp.y1,
1285 -1, ZPixmap);
1286 }
1287 XUngrabServer(awt_display);
1288 /* Workaround for bug 5039226 */
1289 XSync(awt_display, False);
1290 }
1291 if (temp_image != NULL) {
1292 int temp_scan, bytes_to_copy;
1293 char * img_addr, * temp_addr;
1294 int i;
1295
1296 img_addr = img->data +
1297 (temp.y1 - y) * scan + (temp.x1 - x) * mult;
1298 temp_scan = temp_image->bytes_per_line;
1299 temp_addr = temp_image->data;
1300 bytes_to_copy = (temp.x2 - temp.x1) * mult;
1301 for (i = temp.y1; i < temp.y2; i++) {
1302 memcpy(img_addr, temp_addr, bytes_to_copy);
1303 img_addr += scan;
1304 temp_addr += temp_scan;
1305 }
1306 XDestroyImage(temp_image);
1307 }
1308 }
1309 img->obdata = NULL;
1310 }
1311 if (depth > 8 && img->byte_order != nativeByteOrder) {
1312 X11SD_SwapBytes(xsdo, img, depth,
1313 xsdo->configData->awtImage->wsImageFormat.bits_per_pixel);
1314 }
1315 } else {
1316 /*
1317 * REMIND: This might be better to move to the Lock function
1318 * to avoid lengthy I/O pauses inside what may be a critical
1319 * section. This will be more critical when SD_LOCK_READ is
1320 * implemented. Another solution is to cache the pixels
1321 * to avoid reading for every operation.
1322 */
1323 if (img == NULL) {
1324 img = XCreateImage(awt_display,
1325 xsdo->configData->awt_visInfo.visual,
1326 depth, ZPixmap, 0, NULL, w, h, pad, 0);
1327 if (img == NULL) {
1328 return NULL;
1329 }
1330
1331 img->data = malloc(h * img->bytes_per_line);
1332 if (img->data == NULL) {
1333 XFree(img);
1334 return NULL;
1335 }
1336
1337 img->obdata = NULL;
1338
1339 if (img->byte_order != nativeByteOrder &&
1340 (depth == 15 || depth == 16 || depth == 12)) {
1341 /* bytes will be swapped by XLib. */
1342 img->byte_order = nativeByteOrder;
1343 img->bitmap_bit_order = nativeByteOrder;
1344 }
1345 }
1346 }
1347 return img;
1348 }
1349
1350 void X11SD_DisposeOrCacheXImage(XImage * image) {
1351 /* REMIND: might want to check if the new image worth caching. */
1352 /* Cache only shared images. Passed image is assumed to be non-null. */
1353 if (image->obdata != NULL) {
1354 if (cachedXImage != NULL) {
1355 X11SD_DisposeXImage(cachedXImage);
1356 }
1357 cachedXImage = image;
1358 } else {
1359 X11SD_DisposeXImage(image);
1360 }
1361 }
1362
1363 void X11SD_DisposeXImage(XImage * image) {
1364 if (image != NULL) {
1365 #ifdef MITSHM
1366 if (image->obdata != NULL) {
1367 X11SD_DropSharedSegment((XShmSegmentInfo*)image->obdata);
1368 image->obdata = NULL;
1369 }
1370 #endif /* MITSHM */
1371 XDestroyImage(image);
1372 }
1373 }
1374
1375 static JDgaStatus
1376 GetLockStub(JNIEnv *env, Display *display, void **dgaDev,
1377 Drawable d, JDgaSurfaceInfo *pSurface,
1378 jint lox, jint loy, jint hix, jint hiy)
1379 {
1380 return JDGA_UNAVAILABLE;
1381 }
1382
1383 static JDgaStatus
1384 ReleaseLockStub(JNIEnv *env, void *dgaDev, Drawable d)
1385 {
1386 return JDGA_FAILED;
1387 }
1388
1389 static void
1390 XRequestSentStub(JNIEnv *env, void *dgaDev, Drawable d)
1391 {
1392 }
1393
1394 static void
1395 LibDisposeStub(JNIEnv *env)
1396 {
1397 }
1398
1399 static JDgaLibInfo DgaLibInfoStub = {
1400 NULL,
1401 GetLockStub,
1402 ReleaseLockStub,
1403 XRequestSentStub,
1404 LibDisposeStub,
1405 };
1406
1407 void X11SD_LibDispose(JNIEnv *env) {
1408 AWT_LOCK();
1409 if (pJDgaInfo != NULL) {
1410 pJDgaInfo->pLibDispose(env);
1411 pJDgaInfo = &DgaLibInfoStub;
1412 }
1413 AWT_UNLOCK();
1414 }
1415
1416 void
1417 X11SD_DirectRenderNotify(JNIEnv *env, X11SDOps *xsdo)
1418 {
1419 #ifdef MITSHM
1420 if (xsdo->shmPMData.usingShmPixmap) {
1421 xsdo->shmPMData.xRequestSent = JNI_TRUE;
1422 }
1423 #endif /* MITSHM */
1424 (*pJDgaInfo->pXRequestSent)(env, xsdo->dgaDev, xsdo->drawable);
1425 awt_output_flush();
1426 }
1427
1428 /*
1429 * Sets transparent pixels in the pixmap to
1430 * the specified solid background color and returns it.
1431 * Doesn't update source pixmap unless the color of the
1432 * transparent pixels is different from the specified color.
1433 *
1434 * Note: The AWT lock must be held by the current thread
1435 * while calling into this method.
1436 */
1437 static Drawable
1438 X11SD_GetPixmapWithBg(JNIEnv *env, X11SDOps *xsdo, jint pixel)
1439 {
1440 /* assert AWT_CHECK_HAVE_LOCK(); */
1441
1442 if (xsdo->invalid) {
1443 AWT_UNLOCK();
1444 SurfaceData_ThrowInvalidPipeException(env, "bounds changed");
1445 return 0;
1446 }
1447
1448 /* the image doesn't have transparency, just return it */
1449 if (xsdo->bitmask == 0) {
1450 /* don't need to unlock here, the caller will unlock through
1451 the release call */
1452 return xsdo->drawable;
1453 }
1454
1455 /* Check if current color of the transparent pixels is different
1456 from the specified one */
1457 if (xsdo->isBgInitialized == JNI_FALSE || xsdo->bgPixel != pixel) {
1458 GC srcGC;
1459 GC bmGC;
1460
1461 if (xsdo->drawable == 0) {
1462 AWT_UNLOCK();
1463 return 0;
1464 }
1465
1466 bmGC = XCreateGC(awt_display, xsdo->bitmask, 0, NULL);
1467 if (bmGC == NULL) {
1468 AWT_UNLOCK();
1469 return 0;
1470 }
1471
1472 /* invert the bitmask */
1473 XSetFunction(awt_display, bmGC, GXxor);
1474 XSetForeground(awt_display, bmGC, 1);
1475 XFillRectangle(awt_display, xsdo->bitmask, bmGC,
1476 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1477
1478 srcGC = XCreateGC(awt_display, xsdo->drawable, 0L, NULL);
1479 if (srcGC == NULL) {
1480 XFreeGC(awt_display, bmGC);
1481 AWT_UNLOCK();
1482 return 0;
1483 }
1484
1485 /* set transparent pixels in the source pm to the bg color */
1486 XSetClipMask(awt_display, srcGC, xsdo->bitmask);
1487 XSetForeground(awt_display, srcGC, pixel);
1488 XFillRectangle(awt_display, xsdo->drawable, srcGC,
1489 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1490
1491 /* invert the mask back */
1492 XFillRectangle(awt_display, xsdo->bitmask, bmGC,
1493 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1494
1495 XFreeGC(awt_display, bmGC);
1496 XFreeGC(awt_display, srcGC);
1497 xsdo->bgPixel = pixel;
1498 xsdo->isBgInitialized = JNI_TRUE;
1499 }
1500
1501 return xsdo->drawable;
1502 }
1503
1504 static void
1505 X11SD_ReleasePixmapWithBg(JNIEnv *env, X11SDOps *xsdo)
1506 {
1507 #ifdef MITSHM
1508 if (xsdo->shmPMData.usingShmPixmap) {
1509 xsdo->shmPMData.xRequestSent = JNI_TRUE;
1510 }
1511 #endif /* MITSHM */
1512 }
1513
1514 #endif /* !HEADLESS */
1515
1516 /*
1517 * Class: sun_java2d_x11_X11SurfaceData
1518 * Method: XCreateGC
1519 * Signature: (I)J
1520 */
1521 JNIEXPORT jlong JNICALL
1522 Java_sun_java2d_x11_XSurfaceData_XCreateGC
1523 (JNIEnv *env, jclass xsd, jlong pXSData)
1524 {
1525 jlong ret;
1526
1527 #ifndef HEADLESS
1528 X11SDOps *xsdo;
1529
1530 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XCreateGC");
1531
1532 xsdo = (X11SDOps *) pXSData;
1533 if (xsdo == NULL) {
1534 return 0L;
1535 }
1536
1537 xsdo->javaGC = XCreateGC(awt_display, xsdo->drawable, 0, NULL);
1538 ret = (jlong) xsdo->javaGC;
1539 #else /* !HEADLESS */
1540 ret = 0L;
1541 #endif /* !HEADLESS */
1542
1543 return ret;
1544 }
1545
1546 /*
1547 * Class: sun_java2d_x11_X11SurfaceData
1548 * Method: XResetClip
1549 * Signature: (JIIIILsun/java2d/pipe/Region;)V
1550 */
1551 JNIEXPORT void JNICALL
1552 Java_sun_java2d_x11_XSurfaceData_XResetClip
1553 (JNIEnv *env, jclass xsd, jlong xgc)
1554 {
1555 #ifndef HEADLESS
1556 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XResetClip");
1557 XSetClipMask(awt_display, (GC) xgc, None);
1558 #endif /* !HEADLESS */
1559 }
1560
1561 /*
1562 * Class: sun_java2d_x11_X11SurfaceData
1563 * Method: XSetClip
1564 * Signature: (JIIIILsun/java2d/pipe/Region;)V
1565 */
1566 JNIEXPORT void JNICALL
1567 Java_sun_java2d_x11_XSurfaceData_XSetClip
1568 (JNIEnv *env, jclass xsd, jlong xgc,
1569 jint x1, jint y1, jint x2, jint y2,
1570 jobject complexclip)
1571 {
1572 #ifndef HEADLESS
1573 int numrects;
1574 XRectangle rects[256];
1575 XRectangle *pRect = rects;
1576
1577 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetClip");
1578
1579 numrects = RegionToYXBandedRectangles(env,
1580 x1, y1, x2, y2, complexclip,
1581 &pRect, 256);
1582
1583 XSetClipRectangles(awt_display, (GC) xgc, 0, 0, pRect, numrects, YXBanded);
1584
1585 if (pRect != rects) {
1586 free(pRect);
1587 }
1588 #endif /* !HEADLESS */
1589 }
1590
1591 /*
1592 * Class: sun_java2d_x11_X11SurfaceData
1593 * Method: XSetCopyMode
1594 * Signature: (J)V
1595 */
1596 JNIEXPORT void JNICALL
1597 Java_sun_java2d_x11_X11SurfaceData_XSetCopyMode
1598 (JNIEnv *env, jclass xsd, jlong xgc)
1599 {
1600 #ifndef HEADLESS
1601 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetCopyMode");
1602 XSetFunction(awt_display, (GC) xgc, GXcopy);
1603 #endif /* !HEADLESS */
1604 }
1605
1606 /*
1607 * Class: sun_java2d_x11_X11SurfaceData
1608 * Method: XSetXorMode
1609 * Signature: (J)V
1610 */
1611 JNIEXPORT void JNICALL
1612 Java_sun_java2d_x11_X11SurfaceData_XSetXorMode
1613 (JNIEnv *env, jclass xr, jlong xgc)
1614 {
1615 #ifndef HEADLESS
1616 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetXorMode");
1617 XSetFunction(awt_display, (GC) xgc, GXxor);
1618 #endif /* !HEADLESS */
1619 }
1620
1621 /*
1622 * Class: sun_java2d_x11_X11SurfaceData
1623 * Method: XSetForeground
1624 * Signature: (JI)V
1625 */
1626 JNIEXPORT void JNICALL
1627 Java_sun_java2d_x11_X11SurfaceData_XSetForeground
1628 (JNIEnv *env, jclass xsd, jlong xgc, jint pixel)
1629 {
1630 #ifndef HEADLESS
1631 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetForeground");
1632 XSetForeground(awt_display, (GC) xgc, pixel);
1633 #endif /* !HEADLESS */
1634 }
1635
1636 /*
1637 * Class: sun_java2d_x11_X11SurfaceData
1638 * Method: XSetGraphicsExposures
1639 * Signature: (JZ)V
1640 */
1641 JNIEXPORT void JNICALL
1642 Java_sun_java2d_x11_XSurfaceData_XSetGraphicsExposures
1643 (JNIEnv *env, jclass xsd, jlong xgc, jboolean needExposures)
1644 {
1645 #ifndef HEADLESS
1646 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetGraphicsExposures");
1647 XSetGraphicsExposures(awt_display, (GC) xgc, needExposures ? True : False);
1648 #endif /* !HEADLESS */
1649 }