VirtualBox

source: vbox/trunk/src/VBox/HostServices/SharedOpenGL/crserverlib/server_context.c@ 44860

Last change on this file since 44860 was 44860, checked in by vboxsync, 12 years ago

crOpenGL: redraw impl for X11/glx hosts; enable offscreen rendering for X11/glx hosts
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File size: 15.8 KB
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1/* Copyright (c) 2001, Stanford University
2 * All rights reserved.
3 *
4 * See the file LICENSE.txt for information on redistributing this software.
5 */
6
7#include "cr_spu.h"
8#include "chromium.h"
9#include "cr_error.h"
10#include "cr_net.h"
11#include "cr_rand.h"
12#include "server_dispatch.h"
13#include "server.h"
14#include "cr_mem.h"
15#include "cr_string.h"
16
17GLint SERVER_DISPATCH_APIENTRY
18crServerDispatchCreateContext(const char *dpyName, GLint visualBits, GLint shareCtx)
19{
20 return crServerDispatchCreateContextEx(dpyName, visualBits, shareCtx, -1, -1);
21}
22
23GLint crServerDispatchCreateContextEx(const char *dpyName, GLint visualBits, GLint shareCtx, GLint preloadCtxID, int32_t internalID)
24{
25 GLint retVal = -1;
26 CRContext *newCtx;
27 CRContextInfo *pContextInfo;
28 GLboolean fFirst = GL_FALSE;
29
30 dpyName = "";
31
32 if (shareCtx > 0) {
33 crWarning("CRServer: context sharing not implemented.");
34 shareCtx = 0;
35 }
36
37 pContextInfo = (CRContextInfo *) crAlloc(sizeof (CRContextInfo));
38 if (!pContextInfo)
39 {
40 crWarning("failed to alloc context info!");
41 return -1;
42 }
43
44 pContextInfo->currentMural = NULL;
45
46 pContextInfo->CreateInfo.visualBits = visualBits;
47
48 /* Since the Cr server serialized all incoming clients/contexts into
49 * one outgoing GL stream, we only need to create one context for the
50 * head SPU. We'll only have to make it current once too, below.
51 */
52 if (cr_server.firstCallCreateContext) {
53 cr_server.MainContextInfo.CreateInfo.visualBits = visualBits;
54 cr_server.MainContextInfo.SpuContext = cr_server.head_spu->dispatch_table.
55 CreateContext(dpyName, cr_server.MainContextInfo.CreateInfo.visualBits, shareCtx);
56 if (cr_server.MainContextInfo.SpuContext < 0) {
57 crWarning("crServerDispatchCreateContext() failed.");
58 crFree(pContextInfo);
59 return -1;
60 }
61 cr_server.MainContextInfo.pContext = crStateCreateContext(&cr_server.limits, visualBits, NULL);
62 CRASSERT(cr_server.MainContextInfo.pContext);
63 cr_server.firstCallCreateContext = GL_FALSE;
64 fFirst = GL_TRUE;
65 }
66 else {
67 /* second or third or ... context */
68 if (!cr_server.bUseMultipleContexts && ((visualBits & cr_server.MainContextInfo.CreateInfo.visualBits) != visualBits)) {
69 int oldSpuContext;
70
71 /* the new context needs new visual attributes */
72 cr_server.MainContextInfo.CreateInfo.visualBits |= visualBits;
73 crDebug("crServerDispatchCreateContext requires new visual (0x%x).",
74 cr_server.MainContextInfo.CreateInfo.visualBits);
75
76 /* Here, we used to just destroy the old rendering context.
77 * Unfortunately, this had the side effect of destroying
78 * all display lists and textures that had been loaded on
79 * the old context as well.
80 *
81 * Now, first try to create a new context, with a suitable
82 * visual, sharing display lists and textures with the
83 * old context. Then destroy the old context.
84 */
85
86 /* create new rendering context with suitable visual */
87 oldSpuContext = cr_server.MainContextInfo.SpuContext;
88 cr_server.MainContextInfo.SpuContext = cr_server.head_spu->dispatch_table.
89 CreateContext(dpyName, cr_server.MainContextInfo.CreateInfo.visualBits, cr_server.MainContextInfo.SpuContext);
90 /* destroy old rendering context */
91 cr_server.head_spu->dispatch_table.DestroyContext(oldSpuContext);
92 if (cr_server.MainContextInfo.SpuContext < 0) {
93 crWarning("crServerDispatchCreateContext() failed.");
94 crFree(pContextInfo);
95 return -1;
96 }
97 }
98 }
99
100 if (cr_server.bUseMultipleContexts) {
101 pContextInfo->SpuContext = cr_server.head_spu->dispatch_table.
102 CreateContext(dpyName, cr_server.MainContextInfo.CreateInfo.visualBits, cr_server.MainContextInfo.SpuContext);
103 if (pContextInfo->SpuContext < 0) {
104 crWarning("crServerDispatchCreateContext() failed.");
105 crStateEnableDiffOnMakeCurrent(GL_TRUE);
106 cr_server.bUseMultipleContexts = GL_FALSE;
107 if (!fFirst)
108 crError("creating shared context failed, while it is expected to work!");
109 }
110 else if (fFirst)
111 {
112 crStateEnableDiffOnMakeCurrent(GL_FALSE);
113 }
114 }
115 else
116 {
117 pContextInfo->SpuContext = -1;
118 }
119
120 /* Now create a new state-tracker context and initialize the
121 * dispatch function pointers.
122 */
123 newCtx = crStateCreateContextEx(&cr_server.limits, visualBits, NULL, internalID);
124 if (newCtx) {
125 crStateSetCurrentPointers( newCtx, &(cr_server.current) );
126 crStateResetCurrentPointers(&(cr_server.current));
127 retVal = preloadCtxID<0 ? (GLint)crHashtableAllocKeys( cr_server.contextTable, 1 ) : preloadCtxID;
128
129 pContextInfo->pContext = newCtx;
130 pContextInfo->CreateInfo.visualBits = visualBits;
131 pContextInfo->CreateInfo.externalID = retVal;
132 pContextInfo->CreateInfo.pszDpyName = dpyName ? crStrdup(dpyName) : NULL;
133 crHashtableAdd(cr_server.contextTable, retVal, pContextInfo);
134 }
135
136 if (retVal != -1 && !cr_server.bIsInLoadingState) {
137 int pos;
138 for (pos = 0; pos < CR_MAX_CONTEXTS; pos++) {
139 if (cr_server.curClient->contextList[pos] == 0) {
140 cr_server.curClient->contextList[pos] = retVal;
141 break;
142 }
143 }
144 }
145
146 crServerReturnValue( &retVal, sizeof(retVal) );
147
148 return retVal;
149}
150
151static int crServerRemoveClientContext(CRClient *pClient, GLint ctx)
152{
153 int pos;
154
155 for (pos = 0; pos < CR_MAX_CONTEXTS; ++pos)
156 {
157 if (pClient->contextList[pos] == ctx)
158 {
159 pClient->contextList[pos] = 0;
160 return true;
161 }
162 }
163
164 return false;
165}
166
167static void crServerCleanupMuralCtxUsageCB(unsigned long key, void *data1, void *data2)
168{
169 CRMuralInfo *mural = (CRMuralInfo *) data1;
170 CRContext *ctx = (CRContext *) data2;
171
172 CR_STATE_SHAREDOBJ_USAGE_CLEAR(mural, ctx);
173}
174
175void SERVER_DISPATCH_APIENTRY
176crServerDispatchDestroyContext( GLint ctx )
177{
178 CRContextInfo *crCtxInfo;
179 CRContext *crCtx;
180 int32_t client;
181 CRClientNode *pNode;
182 int found=false;
183
184 crCtxInfo = (CRContextInfo *) crHashtableSearch(cr_server.contextTable, ctx);
185 if (!crCtxInfo) {
186 crWarning("CRServer: DestroyContext invalid context %d", ctx);
187 return;
188 }
189 crCtx = crCtxInfo->pContext;
190 CRASSERT(crCtx);
191
192 crDebug("CRServer: DestroyContext context %d", ctx);
193
194 if (cr_server.currentCtxInfo == crCtxInfo)
195 {
196 CRMuralInfo *dummyMural = crServerGetDummyMural(cr_server.MainContextInfo.CreateInfo.visualBits);
197 crServerPerformMakeCurrent(dummyMural, &cr_server.MainContextInfo);
198 CRASSERT(cr_server.currentCtxInfo == &cr_server.MainContextInfo);
199 }
200
201 crHashtableWalk(cr_server.muralTable, crServerCleanupMuralCtxUsageCB, crCtx);
202 crCtxInfo->currentMural = NULL;
203 crHashtableDelete(cr_server.contextTable, ctx, NULL);
204 crStateDestroyContext( crCtx );
205
206 if (crCtxInfo->CreateInfo.pszDpyName)
207 crFree(crCtxInfo->CreateInfo.pszDpyName);
208
209 if (crCtxInfo->SpuContext >= 0)
210 cr_server.head_spu->dispatch_table.DestroyContext(crCtxInfo->SpuContext);
211
212 crFree(crCtxInfo);
213
214 if (cr_server.curClient)
215 {
216 /* If we delete our current context, default back to the null context */
217 if (cr_server.curClient->currentCtxInfo == crCtxInfo) {
218 cr_server.curClient->currentContextNumber = -1;
219 cr_server.curClient->currentCtxInfo = &cr_server.MainContextInfo;
220 }
221
222 found = crServerRemoveClientContext(cr_server.curClient, ctx);
223
224 /*Some application call destroy context not in a thread where it was created...have do deal with it.*/
225 if (!found)
226 {
227 for (client=0; client<cr_server.numClients; ++client)
228 {
229 if (cr_server.clients[client]==cr_server.curClient)
230 continue;
231
232 found = crServerRemoveClientContext(cr_server.clients[client], ctx);
233
234 if (found) break;
235 }
236 }
237
238 if (!found)
239 {
240 pNode=cr_server.pCleanupClient;
241
242 while (pNode && !found)
243 {
244 found = crServerRemoveClientContext(pNode->pClient, ctx);
245 pNode = pNode->next;
246 }
247 }
248
249 CRASSERT(found);
250 }
251
252 /*Make sure this context isn't active in other clients*/
253 for (client=0; client<cr_server.numClients; ++client)
254 {
255 if (cr_server.clients[client]->currentCtxInfo == crCtxInfo)
256 {
257 cr_server.clients[client]->currentContextNumber = -1;
258 cr_server.clients[client]->currentCtxInfo = &cr_server.MainContextInfo;
259 }
260 }
261
262 pNode=cr_server.pCleanupClient;
263 while (pNode)
264 {
265 if (pNode->pClient->currentCtxInfo == crCtxInfo)
266 {
267 pNode->pClient->currentContextNumber = -1;
268 pNode->pClient->currentCtxInfo = &cr_server.MainContextInfo;
269 }
270 pNode = pNode->next;
271 }
272
273 CRASSERT(cr_server.currentCtxInfo != crCtxInfo);
274}
275
276void crServerPerformMakeCurrent( CRMuralInfo *mural, CRContextInfo *ctxInfo )
277{
278 CRMuralInfo *oldMural;
279 CRContext *ctx, *oldCtx = NULL;
280 GLuint idDrawFBO, idReadFBO;
281 GLint context = ctxInfo->CreateInfo.externalID;
282 GLint window = mural->CreateInfo.externalID;
283
284 cr_server.bForceMakeCurrentOnClientSwitch = GL_FALSE;
285
286 ctx = ctxInfo->pContext;
287 CRASSERT(ctx);
288
289 oldMural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, cr_server.currentWindow);
290
291 /* Ubuntu 11.04 hosts misbehave if context window switch is
292 * done with non-default framebuffer object settings.
293 * crStateSwitchPrepare & crStateSwitchPostprocess are supposed to work around this problem
294 * crStateSwitchPrepare restores the FBO state to its default values before the context window switch,
295 * while crStateSwitchPostprocess restores it back to the original values */
296 oldCtx = crStateGetCurrent();
297 if (oldMural && oldMural->fUseFBO && crServerSupportRedirMuralFBO())
298 {
299 idDrawFBO = oldMural->aidFBOs[oldMural->iCurDrawBuffer];
300 idReadFBO = oldMural->aidFBOs[oldMural->iCurReadBuffer];
301 }
302 else
303 {
304 idDrawFBO = 0;
305 idReadFBO = 0;
306 }
307 crStateSwitchPrepare(cr_server.bUseMultipleContexts ? NULL : ctx, oldCtx, idDrawFBO, idReadFBO);
308
309 /*
310 crDebug("**** %s client %d curCtx=%d curWin=%d", __func__,
311 cr_server.curClient->number, ctxPos, window);
312 */
313 cr_server.curClient->currentContextNumber = context;
314 cr_server.curClient->currentCtxInfo = ctxInfo;
315 cr_server.curClient->currentMural = mural;
316 cr_server.curClient->currentWindow = window;
317
318 CRASSERT(cr_server.curClient->currentCtxInfo);
319 CRASSERT(cr_server.curClient->currentCtxInfo->pContext);
320
321 /* This is a hack to force updating the 'current' attribs */
322 crStateUpdateColorBits();
323
324 if (ctx)
325 crStateSetCurrentPointers( ctx, &(cr_server.current) );
326
327 /* check if being made current for first time, update viewport */
328#if 0
329 if (ctx) {
330 /* initialize the viewport */
331 if (ctx->viewport.viewportW == 0) {
332 ctx->viewport.viewportW = mural->width;
333 ctx->viewport.viewportH = mural->height;
334 ctx->viewport.scissorW = mural->width;
335 ctx->viewport.scissorH = mural->height;
336 }
337 }
338#endif
339
340 /*
341 crDebug("**** %s currentWindow %d newWindow %d", __func__,
342 cr_server.currentWindow, window);
343 */
344
345 if (1/*cr_server.firstCallMakeCurrent ||
346 cr_server.currentWindow != window ||
347 cr_server.currentNativeWindow != nativeWindow*/) {
348 /* Since the cr server serialized all incoming contexts/clients into
349 * one output stream of GL commands, we only need to call the head
350 * SPU's MakeCurrent() function once.
351 * BUT, if we're rendering to multiple windows, we do have to issue
352 * MakeCurrent() calls sometimes. The same GL context will always be
353 * used though.
354 */
355 cr_server.head_spu->dispatch_table.MakeCurrent( mural->spuWindow,
356 0,
357 ctxInfo->SpuContext >= 0
358 ? ctxInfo->SpuContext
359 : cr_server.MainContextInfo.SpuContext);
360
361 CR_STATE_SHAREDOBJ_USAGE_SET(mural, ctx);
362 if (cr_server.currentCtxInfo)
363 cr_server.currentCtxInfo->currentMural = NULL;
364 ctxInfo->currentMural = mural;
365
366 cr_server.firstCallMakeCurrent = GL_FALSE;
367 cr_server.currentCtxInfo = ctxInfo;
368 cr_server.currentWindow = window;
369 cr_server.currentNativeWindow = 0;
370 cr_server.currentMural = mural;
371 }
372
373 /* This used to be earlier, after crStateUpdateColorBits() call */
374 crStateMakeCurrent( ctx );
375
376 if (mural && mural->fUseFBO && crServerSupportRedirMuralFBO())
377 {
378 GLuint id = crServerMuralFBOIdxFromBufferName(mural, ctx->buffer.drawBuffer);
379 if (id != mural->iCurDrawBuffer)
380 {
381 crWarning("DBO draw buffer changed on make current");
382 mural->iCurDrawBuffer = id;
383 }
384
385 id = crServerMuralFBOIdxFromBufferName(mural, ctx->buffer.readBuffer);
386 if (id != mural->iCurReadBuffer)
387 {
388 crWarning("DBO read buffer changed on make current");
389 mural->iCurReadBuffer = id;
390 }
391
392 idDrawFBO = mural->aidFBOs[mural->iCurDrawBuffer];
393 idReadFBO = mural->aidFBOs[mural->iCurReadBuffer];
394 }
395 else
396 {
397 idDrawFBO = 0;
398 idReadFBO = 0;
399 }
400 crStateSwitchPostprocess(ctx, cr_server.bUseMultipleContexts ? NULL : oldCtx, idDrawFBO, idReadFBO);
401
402 if (!ctx->framebufferobject.drawFB
403 && (ctx->buffer.drawBuffer == GL_FRONT || ctx->buffer.drawBuffer == GL_FRONT_LEFT))
404 cr_server.curClient->currentMural->bFbDraw = GL_TRUE;
405
406 if (!mural->fUseFBO)
407 {
408 ctx->buffer.width = mural->width;
409 ctx->buffer.height = mural->height;
410 }
411 else
412 {
413 ctx->buffer.width = 0;
414 ctx->buffer.height = 0;
415 }
416}
417
418
419void SERVER_DISPATCH_APIENTRY
420crServerDispatchMakeCurrent( GLint window, GLint nativeWindow, GLint context )
421{
422 CRMuralInfo *mural;
423 CRContextInfo *ctxInfo = NULL;
424
425 if (context >= 0 && window >= 0) {
426 mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
427 if (!mural)
428 {
429 crWarning("CRServer: invalid window %d passed to crServerDispatchMakeCurrent()", window);
430 return;
431 }
432
433 /* Update the state tracker's current context */
434 ctxInfo = (CRContextInfo *) crHashtableSearch(cr_server.contextTable, context);
435 if (!ctxInfo) {
436 crWarning("CRserver: NULL context in MakeCurrent %d", context);
437 return;
438 }
439 }
440 else {
441#if 0
442 oldMural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, cr_server.currentWindow);
443 if (oldMural && oldMural->bUseFBO && crServerSupportRedirMuralFBO())
444 {
445 if (!crStateGetCurrent()->framebufferobject.drawFB)
446 {
447 cr_server.head_spu->dispatch_table.BindFramebufferEXT(GL_DRAW_FRAMEBUFFER, 0);
448 }
449 if (!crStateGetCurrent()->framebufferobject.readFB)
450 {
451 cr_server.head_spu->dispatch_table.BindFramebufferEXT(GL_READ_FRAMEBUFFER, 0);
452 }
453 }
454
455 ctxInfo = &cr_server.MainContextInfo;
456 window = -1;
457 mural = NULL;
458#endif
459 cr_server.bForceMakeCurrentOnClientSwitch = GL_TRUE;
460 return;
461 }
462
463 crServerPerformMakeCurrent( mural, ctxInfo );
464}
465
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