eglApi.cpp revision 646a5c593f9819dc5da6a1ec859bc70cb7ba096f 
1/*
2 ** Copyright 2007, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17#define ATRACE_TAG ATRACE_TAG_GRAPHICS
18
19#include <ctype.h>
20#include <stdlib.h>
21#include <string.h>
22
23#include <hardware/gralloc.h>
24#include <system/window.h>
25
26#include <EGL/egl.h>
27#include <EGL/eglext.h>
28#include <GLES/gl.h>
29#include <GLES/glext.h>
30
31#include <cutils/log.h>
32#include <cutils/atomic.h>
33#include <cutils/compiler.h>
34#include <cutils/properties.h>
35#include <cutils/memory.h>
36
37#include <utils/KeyedVector.h>
38#include <utils/SortedVector.h>
39#include <utils/String8.h>
40#include <utils/Trace.h>
41
42#include "egl_impl.h"
43#include "egl_tls.h"
44#include "glestrace.h"
45#include "hooks.h"
46
47#include "egl_display.h"
48#include "egl_impl.h"
49#include "egl_object.h"
50#include "egl_tls.h"
51#include "egldefs.h"
52
53using namespace android;
54
55// ----------------------------------------------------------------------------
56
57#define EGL_VERSION_HW_ANDROID  0x3143
58
59struct extention_map_t {
60    const char* name;
61    __eglMustCastToProperFunctionPointerType address;
62};
63
64static const extention_map_t sExtentionMap[] = {
65    { "eglLockSurfaceKHR",
66            (__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
67    { "eglUnlockSurfaceKHR",
68            (__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR },
69    { "eglCreateImageKHR",
70            (__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR },
71    { "eglDestroyImageKHR",
72            (__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR },
73    { "eglGetSystemTimeFrequencyNV",
74            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeFrequencyNV },
75    { "eglGetSystemTimeNV",
76            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeNV },
77};
78
79// accesses protected by sExtensionMapMutex
80static DefaultKeyedVector<String8, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
81static int sGLExtentionSlot = 0;
82static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
83
84static void(*findProcAddress(const char* name,
85        const extention_map_t* map, size_t n))() {
86    for (uint32_t i=0 ; i<n ; i++) {
87        if (!strcmp(name, map[i].name)) {
88            return map[i].address;
89        }
90    }
91    return NULL;
92}
93
94// ----------------------------------------------------------------------------
95
96namespace android {
97extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
98extern EGLBoolean egl_init_drivers();
99extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
100extern int gEGLDebugLevel;
101extern gl_hooks_t gHooksTrace;
102} // namespace android;
103
104// ----------------------------------------------------------------------------
105
106static inline void clearError() { egl_tls_t::clearError(); }
107static inline EGLContext getContext() { return egl_tls_t::getContext(); }
108
109// ----------------------------------------------------------------------------
110
111EGLDisplay eglGetDisplay(EGLNativeDisplayType display)
112{
113    clearError();
114
115    uint32_t index = uint32_t(display);
116    if (index >= NUM_DISPLAYS) {
117        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
118    }
119
120    if (egl_init_drivers() == EGL_FALSE) {
121        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
122    }
123
124    EGLDisplay dpy = egl_display_t::getFromNativeDisplay(display);
125    return dpy;
126}
127
128// ----------------------------------------------------------------------------
129// Initialization
130// ----------------------------------------------------------------------------
131
132EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
133{
134    clearError();
135
136    egl_display_ptr dp = get_display(dpy);
137    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
138
139    EGLBoolean res = dp->initialize(major, minor);
140
141    return res;
142}
143
144EGLBoolean eglTerminate(EGLDisplay dpy)
145{
146    // NOTE: don't unload the drivers b/c some APIs can be called
147    // after eglTerminate() has been called. eglTerminate() only
148    // terminates an EGLDisplay, not a EGL itself.
149
150    clearError();
151
152    egl_display_ptr dp = get_display(dpy);
153    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
154
155    EGLBoolean res = dp->terminate();
156
157    return res;
158}
159
160// ----------------------------------------------------------------------------
161// configuration
162// ----------------------------------------------------------------------------
163
164EGLBoolean eglGetConfigs(   EGLDisplay dpy,
165                            EGLConfig *configs,
166                            EGLint config_size, EGLint *num_config)
167{
168    clearError();
169
170    const egl_display_ptr dp = validate_display(dpy);
171    if (!dp) return EGL_FALSE;
172
173    if (num_config==0) {
174        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
175    }
176
177    EGLBoolean res = EGL_FALSE;
178    *num_config = 0;
179
180    egl_connection_t* const cnx = &gEGLImpl;
181    if (cnx->dso) {
182        res = cnx->egl.eglGetConfigs(
183                dp->disp.dpy, configs, config_size, num_config);
184    }
185
186    return res;
187}
188
189EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
190                            EGLConfig *configs, EGLint config_size,
191                            EGLint *num_config)
192{
193    clearError();
194
195    const egl_display_ptr dp = validate_display(dpy);
196    if (!dp) return EGL_FALSE;
197
198    if (num_config==0) {
199        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
200    }
201
202    EGLBoolean res = EGL_FALSE;
203    *num_config = 0;
204
205    egl_connection_t* const cnx = &gEGLImpl;
206    if (cnx->dso) {
207        res = cnx->egl.eglChooseConfig(
208                dp->disp.dpy, attrib_list, configs, config_size, num_config);
209    }
210    return res;
211}
212
213EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
214        EGLint attribute, EGLint *value)
215{
216    clearError();
217
218    egl_connection_t* cnx = NULL;
219    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
220    if (!dp) return EGL_FALSE;
221
222    return cnx->egl.eglGetConfigAttrib(
223            dp->disp.dpy, config, attribute, value);
224}
225
226// ----------------------------------------------------------------------------
227// surfaces
228// ----------------------------------------------------------------------------
229
230EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
231                                    NativeWindowType window,
232                                    const EGLint *attrib_list)
233{
234    clearError();
235
236    egl_connection_t* cnx = NULL;
237    egl_display_ptr dp = validate_display_connection(dpy, cnx);
238    if (dp) {
239        EGLDisplay iDpy = dp->disp.dpy;
240        EGLint format;
241
242        if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != OK) {
243            ALOGE("EGLNativeWindowType %p already connected to another API",
244                    window);
245            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
246        }
247
248        // set the native window's buffers format to match this config
249        if (cnx->egl.eglGetConfigAttrib(iDpy,
250                config, EGL_NATIVE_VISUAL_ID, &format)) {
251            if (format != 0) {
252                int err = native_window_set_buffers_format(window, format);
253                if (err != 0) {
254                    ALOGE("error setting native window pixel format: %s (%d)",
255                            strerror(-err), err);
256                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
257                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
258                }
259            }
260        }
261
262        // the EGL spec requires that a new EGLSurface default to swap interval
263        // 1, so explicitly set that on the window here.
264        ANativeWindow* anw = reinterpret_cast<ANativeWindow*>(window);
265        anw->setSwapInterval(anw, 1);
266
267        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
268                iDpy, config, window, attrib_list);
269        if (surface != EGL_NO_SURFACE) {
270            egl_surface_t* s = new egl_surface_t(dp.get(), config, window,
271                    surface, cnx);
272            return s;
273        }
274
275        // EGLSurface creation failed
276        native_window_set_buffers_format(window, 0);
277        native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
278    }
279    return EGL_NO_SURFACE;
280}
281
282EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
283                                    NativePixmapType pixmap,
284                                    const EGLint *attrib_list)
285{
286    clearError();
287
288    egl_connection_t* cnx = NULL;
289    egl_display_ptr dp = validate_display_connection(dpy, cnx);
290    if (dp) {
291        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
292                dp->disp.dpy, config, pixmap, attrib_list);
293        if (surface != EGL_NO_SURFACE) {
294            egl_surface_t* s = new egl_surface_t(dp.get(), config, NULL,
295                    surface, cnx);
296            return s;
297        }
298    }
299    return EGL_NO_SURFACE;
300}
301
302EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
303                                    const EGLint *attrib_list)
304{
305    clearError();
306
307    egl_connection_t* cnx = NULL;
308    egl_display_ptr dp = validate_display_connection(dpy, cnx);
309    if (dp) {
310        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
311                dp->disp.dpy, config, attrib_list);
312        if (surface != EGL_NO_SURFACE) {
313            egl_surface_t* s = new egl_surface_t(dp.get(), config, NULL,
314                    surface, cnx);
315            return s;
316        }
317    }
318    return EGL_NO_SURFACE;
319}
320
321EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
322{
323    clearError();
324
325    const egl_display_ptr dp = validate_display(dpy);
326    if (!dp) return EGL_FALSE;
327
328    SurfaceRef _s(dp.get(), surface);
329    if (!_s.get())
330        return setError(EGL_BAD_SURFACE, EGL_FALSE);
331
332    egl_surface_t * const s = get_surface(surface);
333    EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
334    if (result == EGL_TRUE) {
335        _s.terminate();
336    }
337    return result;
338}
339
340EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
341                            EGLint attribute, EGLint *value)
342{
343    clearError();
344
345    const egl_display_ptr dp = validate_display(dpy);
346    if (!dp) return EGL_FALSE;
347
348    SurfaceRef _s(dp.get(), surface);
349    if (!_s.get())
350        return setError(EGL_BAD_SURFACE, EGL_FALSE);
351
352    egl_surface_t const * const s = get_surface(surface);
353    return s->cnx->egl.eglQuerySurface(
354            dp->disp.dpy, s->surface, attribute, value);
355}
356
357void EGLAPI eglBeginFrame(EGLDisplay dpy, EGLSurface surface) {
358    ATRACE_CALL();
359    clearError();
360
361    const egl_display_ptr dp = validate_display(dpy);
362    if (!dp) {
363        return;
364    }
365
366    SurfaceRef _s(dp.get(), surface);
367    if (!_s.get()) {
368        setError(EGL_BAD_SURFACE, EGL_FALSE);
369        return;
370    }
371
372    int64_t timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
373
374    egl_surface_t const * const s = get_surface(surface);
375    native_window_set_buffers_timestamp(s->win.get(), timestamp);
376}
377
378// ----------------------------------------------------------------------------
379// Contexts
380// ----------------------------------------------------------------------------
381
382EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
383                            EGLContext share_list, const EGLint *attrib_list)
384{
385    clearError();
386
387    egl_connection_t* cnx = NULL;
388    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
389    if (dpy) {
390        if (share_list != EGL_NO_CONTEXT) {
391            egl_context_t* const c = get_context(share_list);
392            share_list = c->context;
393        }
394        EGLContext context = cnx->egl.eglCreateContext(
395                dp->disp.dpy, config, share_list, attrib_list);
396        if (context != EGL_NO_CONTEXT) {
397            // figure out if it's a GLESv1 or GLESv2
398            int version = 0;
399            if (attrib_list) {
400                while (*attrib_list != EGL_NONE) {
401                    GLint attr = *attrib_list++;
402                    GLint value = *attrib_list++;
403                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
404                        if (value == 1) {
405                            version = egl_connection_t::GLESv1_INDEX;
406                        } else if (value == 2) {
407                            version = egl_connection_t::GLESv2_INDEX;
408                        }
409                    }
410                };
411            }
412            egl_context_t* c = new egl_context_t(dpy, context, config, cnx,
413                    version);
414#if EGL_TRACE
415            if (gEGLDebugLevel > 0)
416                GLTrace_eglCreateContext(version, c);
417#endif
418            return c;
419        }
420    }
421    return EGL_NO_CONTEXT;
422}
423
424EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
425{
426    clearError();
427
428    const egl_display_ptr dp = validate_display(dpy);
429    if (!dp)
430        return EGL_FALSE;
431
432    ContextRef _c(dp.get(), ctx);
433    if (!_c.get())
434        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
435
436    egl_context_t * const c = get_context(ctx);
437    EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
438    if (result == EGL_TRUE) {
439        _c.terminate();
440    }
441    return result;
442}
443
444EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
445                            EGLSurface read, EGLContext ctx)
446{
447    clearError();
448
449    egl_display_ptr dp = validate_display(dpy);
450    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
451
452    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
453    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
454    // a valid but uninitialized display.
455    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
456         (draw != EGL_NO_SURFACE) ) {
457        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
458    }
459
460    // get a reference to the object passed in
461    ContextRef _c(dp.get(), ctx);
462    SurfaceRef _d(dp.get(), draw);
463    SurfaceRef _r(dp.get(), read);
464
465    // validate the context (if not EGL_NO_CONTEXT)
466    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
467        // EGL_NO_CONTEXT is valid
468        return EGL_FALSE;
469    }
470
471    // these are the underlying implementation's object
472    EGLContext impl_ctx  = EGL_NO_CONTEXT;
473    EGLSurface impl_draw = EGL_NO_SURFACE;
474    EGLSurface impl_read = EGL_NO_SURFACE;
475
476    // these are our objects structs passed in
477    egl_context_t       * c = NULL;
478    egl_surface_t const * d = NULL;
479    egl_surface_t const * r = NULL;
480
481    // these are the current objects structs
482    egl_context_t * cur_c = get_context(getContext());
483
484    if (ctx != EGL_NO_CONTEXT) {
485        c = get_context(ctx);
486        impl_ctx = c->context;
487    } else {
488        // no context given, use the implementation of the current context
489        if (cur_c == NULL) {
490            // no current context
491            if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
492                // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
493                return setError(EGL_BAD_MATCH, EGL_FALSE);
494            }
495            // not an error, there is just no current context.
496            return EGL_TRUE;
497        }
498    }
499
500    // retrieve the underlying implementation's draw EGLSurface
501    if (draw != EGL_NO_SURFACE) {
502        d = get_surface(draw);
503        impl_draw = d->surface;
504    }
505
506    // retrieve the underlying implementation's read EGLSurface
507    if (read != EGL_NO_SURFACE) {
508        r = get_surface(read);
509        impl_read = r->surface;
510    }
511
512
513    EGLBoolean result = dp->makeCurrent(c, cur_c,
514            draw, read, ctx,
515            impl_draw, impl_read, impl_ctx);
516
517    if (result == EGL_TRUE) {
518        if (c) {
519            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
520            egl_tls_t::setContext(ctx);
521#if EGL_TRACE
522            if (gEGLDebugLevel > 0)
523                GLTrace_eglMakeCurrent(c->version, c->cnx->hooks[c->version], ctx);
524#endif
525            _c.acquire();
526            _r.acquire();
527            _d.acquire();
528        } else {
529            setGLHooksThreadSpecific(&gHooksNoContext);
530            egl_tls_t::setContext(EGL_NO_CONTEXT);
531        }
532    } else {
533        // this will ALOGE the error
534        result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
535    }
536    return result;
537}
538
539
540EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
541                            EGLint attribute, EGLint *value)
542{
543    clearError();
544
545    const egl_display_ptr dp = validate_display(dpy);
546    if (!dp) return EGL_FALSE;
547
548    ContextRef _c(dp.get(), ctx);
549    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
550
551    egl_context_t * const c = get_context(ctx);
552    return c->cnx->egl.eglQueryContext(
553            dp->disp.dpy, c->context, attribute, value);
554
555}
556
557EGLContext eglGetCurrentContext(void)
558{
559    // could be called before eglInitialize(), but we wouldn't have a context
560    // then, and this function would correctly return EGL_NO_CONTEXT.
561
562    clearError();
563
564    EGLContext ctx = getContext();
565    return ctx;
566}
567
568EGLSurface eglGetCurrentSurface(EGLint readdraw)
569{
570    // could be called before eglInitialize(), but we wouldn't have a context
571    // then, and this function would correctly return EGL_NO_SURFACE.
572
573    clearError();
574
575    EGLContext ctx = getContext();
576    if (ctx) {
577        egl_context_t const * const c = get_context(ctx);
578        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
579        switch (readdraw) {
580            case EGL_READ: return c->read;
581            case EGL_DRAW: return c->draw;
582            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
583        }
584    }
585    return EGL_NO_SURFACE;
586}
587
588EGLDisplay eglGetCurrentDisplay(void)
589{
590    // could be called before eglInitialize(), but we wouldn't have a context
591    // then, and this function would correctly return EGL_NO_DISPLAY.
592
593    clearError();
594
595    EGLContext ctx = getContext();
596    if (ctx) {
597        egl_context_t const * const c = get_context(ctx);
598        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
599        return c->dpy;
600    }
601    return EGL_NO_DISPLAY;
602}
603
604EGLBoolean eglWaitGL(void)
605{
606    clearError();
607
608    egl_connection_t* const cnx = &gEGLImpl;
609    if (!cnx->dso)
610        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
611
612    return cnx->egl.eglWaitGL();
613}
614
615EGLBoolean eglWaitNative(EGLint engine)
616{
617    clearError();
618
619    egl_connection_t* const cnx = &gEGLImpl;
620    if (!cnx->dso)
621        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
622
623    return cnx->egl.eglWaitNative(engine);
624}
625
626EGLint eglGetError(void)
627{
628    EGLint err = EGL_SUCCESS;
629    egl_connection_t* const cnx = &gEGLImpl;
630    if (cnx->dso) {
631        err = cnx->egl.eglGetError();
632    }
633    if (err == EGL_SUCCESS) {
634        err = egl_tls_t::getError();
635    }
636    return err;
637}
638
639__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
640{
641    // eglGetProcAddress() could be the very first function called
642    // in which case we must make sure we've initialized ourselves, this
643    // happens the first time egl_get_display() is called.
644
645    clearError();
646
647    if (egl_init_drivers() == EGL_FALSE) {
648        setError(EGL_BAD_PARAMETER, NULL);
649        return  NULL;
650    }
651
652    // These extensions should not be exposed to applications. They're used
653    // internally by the Android EGL layer.
654    if (!strcmp(procname, "eglSetBlobCacheFuncsANDROID") ||
655        !strcmp(procname, "eglHibernateProcessIMG") ||
656        !strcmp(procname, "eglAwakenProcessIMG")) {
657        return NULL;
658    }
659
660    __eglMustCastToProperFunctionPointerType addr;
661    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
662    if (addr) return addr;
663
664
665    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
666    pthread_mutex_lock(&sExtensionMapMutex);
667
668        /*
669         * Since eglGetProcAddress() is not associated to anything, it needs
670         * to return a function pointer that "works" regardless of what
671         * the current context is.
672         *
673         * For this reason, we return a "forwarder", a small stub that takes
674         * care of calling the function associated with the context
675         * currently bound.
676         *
677         * We first look for extensions we've already resolved, if we're seeing
678         * this extension for the first time, we go through all our
679         * implementations and call eglGetProcAddress() and record the
680         * result in the appropriate implementation hooks and return the
681         * address of the forwarder corresponding to that hook set.
682         *
683         */
684
685        const String8 name(procname);
686        addr = sGLExtentionMap.valueFor(name);
687        const int slot = sGLExtentionSlot;
688
689        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
690                "no more slots for eglGetProcAddress(\"%s\")",
691                procname);
692
693#if EGL_TRACE
694        gl_hooks_t *debugHooks = GLTrace_getGLHooks();
695#endif
696
697        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
698            bool found = false;
699
700            egl_connection_t* const cnx = &gEGLImpl;
701            if (cnx->dso && cnx->egl.eglGetProcAddress) {
702                found = true;
703                // Extensions are independent of the bound context
704                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
705                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
706#if EGL_TRACE
707                debugHooks->ext.extensions[slot] =
708                gHooksTrace.ext.extensions[slot] =
709#endif
710                        cnx->egl.eglGetProcAddress(procname);
711            }
712
713            if (found) {
714                addr = gExtensionForwarders[slot];
715                sGLExtentionMap.add(name, addr);
716                sGLExtentionSlot++;
717            }
718        }
719
720    pthread_mutex_unlock(&sExtensionMapMutex);
721    return addr;
722}
723
724class FrameCompletionThread : public Thread {
725public:
726
727    static void queueSync(EGLSyncKHR sync) {
728        static sp<FrameCompletionThread> thread(new FrameCompletionThread);
729        static bool running = false;
730        if (!running) {
731            thread->run("GPUFrameCompletion");
732            running = true;
733        }
734        {
735            Mutex::Autolock lock(thread->mMutex);
736            ScopedTrace st(ATRACE_TAG, String8::format("kicked off frame %d",
737                    thread->mFramesQueued).string());
738            thread->mQueue.push_back(sync);
739            thread->mCondition.signal();
740            thread->mFramesQueued++;
741            ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
742        }
743    }
744
745private:
746    FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {}
747
748    virtual bool threadLoop() {
749        EGLSyncKHR sync;
750        uint32_t frameNum;
751        {
752            Mutex::Autolock lock(mMutex);
753            while (mQueue.isEmpty()) {
754                mCondition.wait(mMutex);
755            }
756            sync = mQueue[0];
757            frameNum = mFramesCompleted;
758        }
759        EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
760        {
761            ScopedTrace st(ATRACE_TAG, String8::format("waiting for frame %d",
762                    frameNum).string());
763            EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
764            if (result == EGL_FALSE) {
765                ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
766            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
767                ALOGE("FrameCompletion: timeout waiting for fence");
768            }
769            eglDestroySyncKHR(dpy, sync);
770        }
771        {
772            Mutex::Autolock lock(mMutex);
773            mQueue.removeAt(0);
774            mFramesCompleted++;
775            ATRACE_INT("GPU Frames Outstanding", mQueue.size());
776        }
777        return true;
778    }
779
780    uint32_t mFramesQueued;
781    uint32_t mFramesCompleted;
782    Vector<EGLSyncKHR> mQueue;
783    Condition mCondition;
784    Mutex mMutex;
785};
786
787EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
788{
789    ATRACE_CALL();
790    clearError();
791
792    const egl_display_ptr dp = validate_display(dpy);
793    if (!dp) return EGL_FALSE;
794
795    SurfaceRef _s(dp.get(), draw);
796    if (!_s.get())
797        return setError(EGL_BAD_SURFACE, EGL_FALSE);
798
799#if EGL_TRACE
800    if (gEGLDebugLevel > 0)
801        GLTrace_eglSwapBuffers(dpy, draw);
802#endif
803
804    egl_surface_t const * const s = get_surface(draw);
805
806    if (CC_UNLIKELY(dp->finishOnSwap)) {
807        uint32_t pixel;
808        egl_context_t * const c = get_context( egl_tls_t::getContext() );
809        if (c) {
810            // glReadPixels() ensures that the frame is complete
811            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
812                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
813        }
814    }
815
816    EGLBoolean result = s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
817
818    if (CC_UNLIKELY(dp->traceGpuCompletion)) {
819        EGLSyncKHR sync = EGL_NO_SYNC_KHR;
820        {
821            sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
822        }
823        if (sync != EGL_NO_SYNC_KHR) {
824            FrameCompletionThread::queueSync(sync);
825        }
826    }
827
828    return result;
829}
830
831EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
832                            NativePixmapType target)
833{
834    clearError();
835
836    const egl_display_ptr dp = validate_display(dpy);
837    if (!dp) return EGL_FALSE;
838
839    SurfaceRef _s(dp.get(), surface);
840    if (!_s.get())
841        return setError(EGL_BAD_SURFACE, EGL_FALSE);
842
843    egl_surface_t const * const s = get_surface(surface);
844    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
845}
846
847const char* eglQueryString(EGLDisplay dpy, EGLint name)
848{
849    clearError();
850
851    const egl_display_ptr dp = validate_display(dpy);
852    if (!dp) return (const char *) NULL;
853
854    switch (name) {
855        case EGL_VENDOR:
856            return dp->getVendorString();
857        case EGL_VERSION:
858            return dp->getVersionString();
859        case EGL_EXTENSIONS:
860            return dp->getExtensionString();
861        case EGL_CLIENT_APIS:
862            return dp->getClientApiString();
863        case EGL_VERSION_HW_ANDROID:
864            return dp->disp.queryString.version;
865    }
866    return setError(EGL_BAD_PARAMETER, (const char *)0);
867}
868
869
870// ----------------------------------------------------------------------------
871// EGL 1.1
872// ----------------------------------------------------------------------------
873
874EGLBoolean eglSurfaceAttrib(
875        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
876{
877    clearError();
878
879    const egl_display_ptr dp = validate_display(dpy);
880    if (!dp) return EGL_FALSE;
881
882    SurfaceRef _s(dp.get(), surface);
883    if (!_s.get())
884        return setError(EGL_BAD_SURFACE, EGL_FALSE);
885
886    egl_surface_t const * const s = get_surface(surface);
887    if (s->cnx->egl.eglSurfaceAttrib) {
888        return s->cnx->egl.eglSurfaceAttrib(
889                dp->disp.dpy, s->surface, attribute, value);
890    }
891    return setError(EGL_BAD_SURFACE, EGL_FALSE);
892}
893
894EGLBoolean eglBindTexImage(
895        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
896{
897    clearError();
898
899    const egl_display_ptr dp = validate_display(dpy);
900    if (!dp) return EGL_FALSE;
901
902    SurfaceRef _s(dp.get(), surface);
903    if (!_s.get())
904        return setError(EGL_BAD_SURFACE, EGL_FALSE);
905
906    egl_surface_t const * const s = get_surface(surface);
907    if (s->cnx->egl.eglBindTexImage) {
908        return s->cnx->egl.eglBindTexImage(
909                dp->disp.dpy, s->surface, buffer);
910    }
911    return setError(EGL_BAD_SURFACE, EGL_FALSE);
912}
913
914EGLBoolean eglReleaseTexImage(
915        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
916{
917    clearError();
918
919    const egl_display_ptr dp = validate_display(dpy);
920    if (!dp) return EGL_FALSE;
921
922    SurfaceRef _s(dp.get(), surface);
923    if (!_s.get())
924        return setError(EGL_BAD_SURFACE, EGL_FALSE);
925
926    egl_surface_t const * const s = get_surface(surface);
927    if (s->cnx->egl.eglReleaseTexImage) {
928        return s->cnx->egl.eglReleaseTexImage(
929                dp->disp.dpy, s->surface, buffer);
930    }
931    return setError(EGL_BAD_SURFACE, EGL_FALSE);
932}
933
934EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
935{
936    clearError();
937
938    const egl_display_ptr dp = validate_display(dpy);
939    if (!dp) return EGL_FALSE;
940
941    EGLBoolean res = EGL_TRUE;
942    egl_connection_t* const cnx = &gEGLImpl;
943    if (cnx->dso && cnx->egl.eglSwapInterval) {
944        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
945    }
946
947    return res;
948}
949
950
951// ----------------------------------------------------------------------------
952// EGL 1.2
953// ----------------------------------------------------------------------------
954
955EGLBoolean eglWaitClient(void)
956{
957    clearError();
958
959    egl_connection_t* const cnx = &gEGLImpl;
960    if (!cnx->dso)
961        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
962
963    EGLBoolean res;
964    if (cnx->egl.eglWaitClient) {
965        res = cnx->egl.eglWaitClient();
966    } else {
967        res = cnx->egl.eglWaitGL();
968    }
969    return res;
970}
971
972EGLBoolean eglBindAPI(EGLenum api)
973{
974    clearError();
975
976    if (egl_init_drivers() == EGL_FALSE) {
977        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
978    }
979
980    // bind this API on all EGLs
981    EGLBoolean res = EGL_TRUE;
982    egl_connection_t* const cnx = &gEGLImpl;
983    if (cnx->dso && cnx->egl.eglBindAPI) {
984        res = cnx->egl.eglBindAPI(api);
985    }
986    return res;
987}
988
989EGLenum eglQueryAPI(void)
990{
991    clearError();
992
993    if (egl_init_drivers() == EGL_FALSE) {
994        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
995    }
996
997    egl_connection_t* const cnx = &gEGLImpl;
998    if (cnx->dso && cnx->egl.eglQueryAPI) {
999        return cnx->egl.eglQueryAPI();
1000    }
1001
1002    // or, it can only be OpenGL ES
1003    return EGL_OPENGL_ES_API;
1004}
1005
1006EGLBoolean eglReleaseThread(void)
1007{
1008    clearError();
1009
1010    // If there is context bound to the thread, release it
1011    egl_display_t::loseCurrent(get_context(getContext()));
1012
1013    egl_connection_t* const cnx = &gEGLImpl;
1014    if (cnx->dso && cnx->egl.eglReleaseThread) {
1015        cnx->egl.eglReleaseThread();
1016    }
1017
1018    egl_tls_t::clearTLS();
1019#if EGL_TRACE
1020    if (gEGLDebugLevel > 0)
1021        GLTrace_eglReleaseThread();
1022#endif
1023    return EGL_TRUE;
1024}
1025
1026EGLSurface eglCreatePbufferFromClientBuffer(
1027          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
1028          EGLConfig config, const EGLint *attrib_list)
1029{
1030    clearError();
1031
1032    egl_connection_t* cnx = NULL;
1033    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
1034    if (!dp) return EGL_FALSE;
1035    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
1036        return cnx->egl.eglCreatePbufferFromClientBuffer(
1037                dp->disp.dpy, buftype, buffer, config, attrib_list);
1038    }
1039    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
1040}
1041
1042// ----------------------------------------------------------------------------
1043// EGL_EGLEXT_VERSION 3
1044// ----------------------------------------------------------------------------
1045
1046EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
1047        const EGLint *attrib_list)
1048{
1049    clearError();
1050
1051    const egl_display_ptr dp = validate_display(dpy);
1052    if (!dp) return EGL_FALSE;
1053
1054    SurfaceRef _s(dp.get(), surface);
1055    if (!_s.get())
1056        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1057
1058    egl_surface_t const * const s = get_surface(surface);
1059    if (s->cnx->egl.eglLockSurfaceKHR) {
1060        return s->cnx->egl.eglLockSurfaceKHR(
1061                dp->disp.dpy, s->surface, attrib_list);
1062    }
1063    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1064}
1065
1066EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
1067{
1068    clearError();
1069
1070    const egl_display_ptr dp = validate_display(dpy);
1071    if (!dp) return EGL_FALSE;
1072
1073    SurfaceRef _s(dp.get(), surface);
1074    if (!_s.get())
1075        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1076
1077    egl_surface_t const * const s = get_surface(surface);
1078    if (s->cnx->egl.eglUnlockSurfaceKHR) {
1079        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
1080    }
1081    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1082}
1083
1084EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1085        EGLClientBuffer buffer, const EGLint *attrib_list)
1086{
1087    clearError();
1088
1089    const egl_display_ptr dp = validate_display(dpy);
1090    if (!dp) return EGL_NO_IMAGE_KHR;
1091
1092    ContextRef _c(dp.get(), ctx);
1093    egl_context_t * const c = _c.get();
1094
1095    EGLImageKHR result = EGL_NO_IMAGE_KHR;
1096    egl_connection_t* const cnx = &gEGLImpl;
1097    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
1098        result = cnx->egl.eglCreateImageKHR(
1099                dp->disp.dpy,
1100                c ? c->context : EGL_NO_CONTEXT,
1101                target, buffer, attrib_list);
1102    }
1103    return result;
1104}
1105
1106EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1107{
1108    clearError();
1109
1110    const egl_display_ptr dp = validate_display(dpy);
1111    if (!dp) return EGL_FALSE;
1112
1113    EGLBoolean result = EGL_FALSE;
1114    egl_connection_t* const cnx = &gEGLImpl;
1115    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
1116        result = cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
1117    }
1118    return result;
1119}
1120
1121// ----------------------------------------------------------------------------
1122// EGL_EGLEXT_VERSION 5
1123// ----------------------------------------------------------------------------
1124
1125
1126EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1127{
1128    clearError();
1129
1130    const egl_display_ptr dp = validate_display(dpy);
1131    if (!dp) return EGL_NO_SYNC_KHR;
1132
1133    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1134    egl_connection_t* const cnx = &gEGLImpl;
1135    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
1136        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
1137    }
1138    return result;
1139}
1140
1141EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1142{
1143    clearError();
1144
1145    const egl_display_ptr dp = validate_display(dpy);
1146    if (!dp) return EGL_FALSE;
1147
1148    EGLBoolean result = EGL_FALSE;
1149    egl_connection_t* const cnx = &gEGLImpl;
1150    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
1151        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
1152    }
1153    return result;
1154}
1155
1156EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync,
1157        EGLint flags, EGLTimeKHR timeout)
1158{
1159    clearError();
1160
1161    const egl_display_ptr dp = validate_display(dpy);
1162    if (!dp) return EGL_FALSE;
1163
1164    EGLBoolean result = EGL_FALSE;
1165    egl_connection_t* const cnx = &gEGLImpl;
1166    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
1167        result = cnx->egl.eglClientWaitSyncKHR(
1168                dp->disp.dpy, sync, flags, timeout);
1169    }
1170    return result;
1171}
1172
1173EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync,
1174        EGLint attribute, EGLint *value)
1175{
1176    clearError();
1177
1178    const egl_display_ptr dp = validate_display(dpy);
1179    if (!dp) return EGL_FALSE;
1180
1181    EGLBoolean result = EGL_FALSE;
1182    egl_connection_t* const cnx = &gEGLImpl;
1183    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
1184        result = cnx->egl.eglGetSyncAttribKHR(
1185                dp->disp.dpy, sync, attribute, value);
1186    }
1187    return result;
1188}
1189
1190// ----------------------------------------------------------------------------
1191// ANDROID extensions
1192// ----------------------------------------------------------------------------
1193
1194/* ANDROID extensions entry-point go here */
1195
1196// ----------------------------------------------------------------------------
1197// NVIDIA extensions
1198// ----------------------------------------------------------------------------
1199EGLuint64NV eglGetSystemTimeFrequencyNV()
1200{
1201    clearError();
1202
1203    if (egl_init_drivers() == EGL_FALSE) {
1204        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1205    }
1206
1207    EGLuint64NV ret = 0;
1208    egl_connection_t* const cnx = &gEGLImpl;
1209
1210    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
1211        return cnx->egl.eglGetSystemTimeFrequencyNV();
1212    }
1213
1214    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1215}
1216
1217EGLuint64NV eglGetSystemTimeNV()
1218{
1219    clearError();
1220
1221    if (egl_init_drivers() == EGL_FALSE) {
1222        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1223    }
1224
1225    EGLuint64NV ret = 0;
1226    egl_connection_t* const cnx = &gEGLImpl;
1227
1228    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
1229        return cnx->egl.eglGetSystemTimeNV();
1230    }
1231
1232    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1233}
1234