eglApi.cpp revision b29e5e8c2682ae145e8c56d9afb061f8da7f854c 
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    // The EGL_ANDROID_blob_cache extension should not be exposed to
653    // applications.  It is used internally by the Android EGL layer.
654    if (!strcmp(procname, "eglSetBlobCacheFuncsANDROID")) {
655        return NULL;
656    }
657
658    __eglMustCastToProperFunctionPointerType addr;
659    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
660    if (addr) return addr;
661
662
663    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
664    pthread_mutex_lock(&sExtensionMapMutex);
665
666        /*
667         * Since eglGetProcAddress() is not associated to anything, it needs
668         * to return a function pointer that "works" regardless of what
669         * the current context is.
670         *
671         * For this reason, we return a "forwarder", a small stub that takes
672         * care of calling the function associated with the context
673         * currently bound.
674         *
675         * We first look for extensions we've already resolved, if we're seeing
676         * this extension for the first time, we go through all our
677         * implementations and call eglGetProcAddress() and record the
678         * result in the appropriate implementation hooks and return the
679         * address of the forwarder corresponding to that hook set.
680         *
681         */
682
683        const String8 name(procname);
684        addr = sGLExtentionMap.valueFor(name);
685        const int slot = sGLExtentionSlot;
686
687        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
688                "no more slots for eglGetProcAddress(\"%s\")",
689                procname);
690
691#if EGL_TRACE
692        gl_hooks_t *debugHooks = GLTrace_getGLHooks();
693#endif
694
695        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
696            bool found = false;
697
698            egl_connection_t* const cnx = &gEGLImpl;
699            if (cnx->dso && cnx->egl.eglGetProcAddress) {
700                found = true;
701                // Extensions are independent of the bound context
702                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
703                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
704#if EGL_TRACE
705                debugHooks->ext.extensions[slot] =
706                gHooksTrace.ext.extensions[slot] =
707#endif
708                        cnx->egl.eglGetProcAddress(procname);
709            }
710
711            if (found) {
712                addr = gExtensionForwarders[slot];
713                sGLExtentionMap.add(name, addr);
714                sGLExtentionSlot++;
715            }
716        }
717
718    pthread_mutex_unlock(&sExtensionMapMutex);
719    return addr;
720}
721
722class FrameCompletionThread : public Thread {
723public:
724
725    static void queueSync(EGLSyncKHR sync) {
726        static sp<FrameCompletionThread> thread(new FrameCompletionThread);
727        static bool running = false;
728        if (!running) {
729            thread->run("GPUFrameCompletion");
730            running = true;
731        }
732        {
733            Mutex::Autolock lock(thread->mMutex);
734            ScopedTrace st(ATRACE_TAG, String8::format("kicked off frame %d",
735                    thread->mFramesQueued).string());
736            thread->mQueue.push_back(sync);
737            thread->mCondition.signal();
738            thread->mFramesQueued++;
739            ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
740        }
741    }
742
743private:
744    FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {}
745
746    virtual bool threadLoop() {
747        EGLSyncKHR sync;
748        uint32_t frameNum;
749        {
750            Mutex::Autolock lock(mMutex);
751            while (mQueue.isEmpty()) {
752                mCondition.wait(mMutex);
753            }
754            sync = mQueue[0];
755            frameNum = mFramesCompleted;
756        }
757        EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
758        {
759            ScopedTrace st(ATRACE_TAG, String8::format("waiting for frame %d",
760                    frameNum).string());
761            EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
762            if (result == EGL_FALSE) {
763                ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
764            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
765                ALOGE("FrameCompletion: timeout waiting for fence");
766            }
767            eglDestroySyncKHR(dpy, sync);
768        }
769        {
770            Mutex::Autolock lock(mMutex);
771            mQueue.removeAt(0);
772            mFramesCompleted++;
773            ATRACE_INT("GPU Frames Outstanding", mQueue.size());
774        }
775        return true;
776    }
777
778    uint32_t mFramesQueued;
779    uint32_t mFramesCompleted;
780    Vector<EGLSyncKHR> mQueue;
781    Condition mCondition;
782    Mutex mMutex;
783};
784
785EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
786{
787    ATRACE_CALL();
788    clearError();
789
790    const egl_display_ptr dp = validate_display(dpy);
791    if (!dp) return EGL_FALSE;
792
793    SurfaceRef _s(dp.get(), draw);
794    if (!_s.get())
795        return setError(EGL_BAD_SURFACE, EGL_FALSE);
796
797#if EGL_TRACE
798    if (gEGLDebugLevel > 0)
799        GLTrace_eglSwapBuffers(dpy, draw);
800#endif
801
802    egl_surface_t const * const s = get_surface(draw);
803
804    if (CC_UNLIKELY(dp->finishOnSwap)) {
805        uint32_t pixel;
806        egl_context_t * const c = get_context( egl_tls_t::getContext() );
807        if (c) {
808            // glReadPixels() ensures that the frame is complete
809            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
810                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
811        }
812    }
813
814    EGLBoolean result = s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
815
816    if (CC_UNLIKELY(dp->traceGpuCompletion)) {
817        EGLSyncKHR sync = EGL_NO_SYNC_KHR;
818        {
819            sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
820        }
821        if (sync != EGL_NO_SYNC_KHR) {
822            FrameCompletionThread::queueSync(sync);
823        }
824    }
825
826    return result;
827}
828
829EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
830                            NativePixmapType target)
831{
832    clearError();
833
834    const egl_display_ptr dp = validate_display(dpy);
835    if (!dp) return EGL_FALSE;
836
837    SurfaceRef _s(dp.get(), surface);
838    if (!_s.get())
839        return setError(EGL_BAD_SURFACE, EGL_FALSE);
840
841    egl_surface_t const * const s = get_surface(surface);
842    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
843}
844
845const char* eglQueryString(EGLDisplay dpy, EGLint name)
846{
847    clearError();
848
849    const egl_display_ptr dp = validate_display(dpy);
850    if (!dp) return (const char *) NULL;
851
852    switch (name) {
853        case EGL_VENDOR:
854            return dp->getVendorString();
855        case EGL_VERSION:
856            return dp->getVersionString();
857        case EGL_EXTENSIONS:
858            return dp->getExtensionString();
859        case EGL_CLIENT_APIS:
860            return dp->getClientApiString();
861        case EGL_VERSION_HW_ANDROID:
862            return dp->disp.queryString.version;
863    }
864    return setError(EGL_BAD_PARAMETER, (const char *)0);
865}
866
867
868// ----------------------------------------------------------------------------
869// EGL 1.1
870// ----------------------------------------------------------------------------
871
872EGLBoolean eglSurfaceAttrib(
873        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
874{
875    clearError();
876
877    const egl_display_ptr dp = validate_display(dpy);
878    if (!dp) return EGL_FALSE;
879
880    SurfaceRef _s(dp.get(), surface);
881    if (!_s.get())
882        return setError(EGL_BAD_SURFACE, EGL_FALSE);
883
884    egl_surface_t const * const s = get_surface(surface);
885    if (s->cnx->egl.eglSurfaceAttrib) {
886        return s->cnx->egl.eglSurfaceAttrib(
887                dp->disp.dpy, s->surface, attribute, value);
888    }
889    return setError(EGL_BAD_SURFACE, EGL_FALSE);
890}
891
892EGLBoolean eglBindTexImage(
893        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
894{
895    clearError();
896
897    const egl_display_ptr dp = validate_display(dpy);
898    if (!dp) return EGL_FALSE;
899
900    SurfaceRef _s(dp.get(), surface);
901    if (!_s.get())
902        return setError(EGL_BAD_SURFACE, EGL_FALSE);
903
904    egl_surface_t const * const s = get_surface(surface);
905    if (s->cnx->egl.eglBindTexImage) {
906        return s->cnx->egl.eglBindTexImage(
907                dp->disp.dpy, s->surface, buffer);
908    }
909    return setError(EGL_BAD_SURFACE, EGL_FALSE);
910}
911
912EGLBoolean eglReleaseTexImage(
913        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
914{
915    clearError();
916
917    const egl_display_ptr dp = validate_display(dpy);
918    if (!dp) return EGL_FALSE;
919
920    SurfaceRef _s(dp.get(), surface);
921    if (!_s.get())
922        return setError(EGL_BAD_SURFACE, EGL_FALSE);
923
924    egl_surface_t const * const s = get_surface(surface);
925    if (s->cnx->egl.eglReleaseTexImage) {
926        return s->cnx->egl.eglReleaseTexImage(
927                dp->disp.dpy, s->surface, buffer);
928    }
929    return setError(EGL_BAD_SURFACE, EGL_FALSE);
930}
931
932EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
933{
934    clearError();
935
936    const egl_display_ptr dp = validate_display(dpy);
937    if (!dp) return EGL_FALSE;
938
939    EGLBoolean res = EGL_TRUE;
940    egl_connection_t* const cnx = &gEGLImpl;
941    if (cnx->dso && cnx->egl.eglSwapInterval) {
942        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
943    }
944
945    return res;
946}
947
948
949// ----------------------------------------------------------------------------
950// EGL 1.2
951// ----------------------------------------------------------------------------
952
953EGLBoolean eglWaitClient(void)
954{
955    clearError();
956
957    egl_connection_t* const cnx = &gEGLImpl;
958    if (!cnx->dso)
959        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
960
961    EGLBoolean res;
962    if (cnx->egl.eglWaitClient) {
963        res = cnx->egl.eglWaitClient();
964    } else {
965        res = cnx->egl.eglWaitGL();
966    }
967    return res;
968}
969
970EGLBoolean eglBindAPI(EGLenum api)
971{
972    clearError();
973
974    if (egl_init_drivers() == EGL_FALSE) {
975        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
976    }
977
978    // bind this API on all EGLs
979    EGLBoolean res = EGL_TRUE;
980    egl_connection_t* const cnx = &gEGLImpl;
981    if (cnx->dso && cnx->egl.eglBindAPI) {
982        res = cnx->egl.eglBindAPI(api);
983    }
984    return res;
985}
986
987EGLenum eglQueryAPI(void)
988{
989    clearError();
990
991    if (egl_init_drivers() == EGL_FALSE) {
992        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
993    }
994
995    egl_connection_t* const cnx = &gEGLImpl;
996    if (cnx->dso && cnx->egl.eglQueryAPI) {
997        return cnx->egl.eglQueryAPI();
998    }
999
1000    // or, it can only be OpenGL ES
1001    return EGL_OPENGL_ES_API;
1002}
1003
1004EGLBoolean eglReleaseThread(void)
1005{
1006    clearError();
1007
1008    // If there is context bound to the thread, release it
1009    egl_display_t::loseCurrent(get_context(getContext()));
1010
1011    egl_connection_t* const cnx = &gEGLImpl;
1012    if (cnx->dso && cnx->egl.eglReleaseThread) {
1013        cnx->egl.eglReleaseThread();
1014    }
1015
1016    egl_tls_t::clearTLS();
1017#if EGL_TRACE
1018    if (gEGLDebugLevel > 0)
1019        GLTrace_eglReleaseThread();
1020#endif
1021    return EGL_TRUE;
1022}
1023
1024EGLSurface eglCreatePbufferFromClientBuffer(
1025          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
1026          EGLConfig config, const EGLint *attrib_list)
1027{
1028    clearError();
1029
1030    egl_connection_t* cnx = NULL;
1031    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
1032    if (!dp) return EGL_FALSE;
1033    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
1034        return cnx->egl.eglCreatePbufferFromClientBuffer(
1035                dp->disp.dpy, buftype, buffer, config, attrib_list);
1036    }
1037    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
1038}
1039
1040// ----------------------------------------------------------------------------
1041// EGL_EGLEXT_VERSION 3
1042// ----------------------------------------------------------------------------
1043
1044EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
1045        const EGLint *attrib_list)
1046{
1047    clearError();
1048
1049    const egl_display_ptr dp = validate_display(dpy);
1050    if (!dp) return EGL_FALSE;
1051
1052    SurfaceRef _s(dp.get(), surface);
1053    if (!_s.get())
1054        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1055
1056    egl_surface_t const * const s = get_surface(surface);
1057    if (s->cnx->egl.eglLockSurfaceKHR) {
1058        return s->cnx->egl.eglLockSurfaceKHR(
1059                dp->disp.dpy, s->surface, attrib_list);
1060    }
1061    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1062}
1063
1064EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
1065{
1066    clearError();
1067
1068    const egl_display_ptr dp = validate_display(dpy);
1069    if (!dp) return EGL_FALSE;
1070
1071    SurfaceRef _s(dp.get(), surface);
1072    if (!_s.get())
1073        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1074
1075    egl_surface_t const * const s = get_surface(surface);
1076    if (s->cnx->egl.eglUnlockSurfaceKHR) {
1077        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
1078    }
1079    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1080}
1081
1082EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1083        EGLClientBuffer buffer, const EGLint *attrib_list)
1084{
1085    clearError();
1086
1087    const egl_display_ptr dp = validate_display(dpy);
1088    if (!dp) return EGL_NO_IMAGE_KHR;
1089
1090    ContextRef _c(dp.get(), ctx);
1091    egl_context_t * const c = _c.get();
1092
1093    EGLImageKHR result = EGL_NO_IMAGE_KHR;
1094    egl_connection_t* const cnx = &gEGLImpl;
1095    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
1096        result = cnx->egl.eglCreateImageKHR(
1097                dp->disp.dpy,
1098                c ? c->context : EGL_NO_CONTEXT,
1099                target, buffer, attrib_list);
1100    }
1101    return result;
1102}
1103
1104EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1105{
1106    clearError();
1107
1108    const egl_display_ptr dp = validate_display(dpy);
1109    if (!dp) return EGL_FALSE;
1110
1111    egl_connection_t* const cnx = &gEGLImpl;
1112    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
1113        cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
1114    }
1115    return EGL_TRUE;
1116}
1117
1118// ----------------------------------------------------------------------------
1119// EGL_EGLEXT_VERSION 5
1120// ----------------------------------------------------------------------------
1121
1122
1123EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1124{
1125    clearError();
1126
1127    const egl_display_ptr dp = validate_display(dpy);
1128    if (!dp) return EGL_NO_SYNC_KHR;
1129
1130    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1131    egl_connection_t* const cnx = &gEGLImpl;
1132    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
1133        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
1134    }
1135    return result;
1136}
1137
1138EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1139{
1140    clearError();
1141
1142    const egl_display_ptr dp = validate_display(dpy);
1143    if (!dp) return EGL_FALSE;
1144
1145    EGLBoolean result = EGL_FALSE;
1146    egl_connection_t* const cnx = &gEGLImpl;
1147    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
1148        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
1149    }
1150    return result;
1151}
1152
1153EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync,
1154        EGLint flags, EGLTimeKHR timeout)
1155{
1156    clearError();
1157
1158    const egl_display_ptr dp = validate_display(dpy);
1159    if (!dp) return EGL_FALSE;
1160
1161    EGLBoolean result = EGL_FALSE;
1162    egl_connection_t* const cnx = &gEGLImpl;
1163    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
1164        result = cnx->egl.eglClientWaitSyncKHR(
1165                dp->disp.dpy, sync, flags, timeout);
1166    }
1167    return result;
1168}
1169
1170EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync,
1171        EGLint attribute, EGLint *value)
1172{
1173    clearError();
1174
1175    const egl_display_ptr dp = validate_display(dpy);
1176    if (!dp) return EGL_FALSE;
1177
1178    EGLBoolean result = EGL_FALSE;
1179    egl_connection_t* const cnx = &gEGLImpl;
1180    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
1181        result = cnx->egl.eglGetSyncAttribKHR(
1182                dp->disp.dpy, sync, attribute, value);
1183    }
1184    return result;
1185}
1186
1187// ----------------------------------------------------------------------------
1188// ANDROID extensions
1189// ----------------------------------------------------------------------------
1190
1191/* ANDROID extensions entry-point go here */
1192
1193// ----------------------------------------------------------------------------
1194// NVIDIA extensions
1195// ----------------------------------------------------------------------------
1196EGLuint64NV eglGetSystemTimeFrequencyNV()
1197{
1198    clearError();
1199
1200    if (egl_init_drivers() == EGL_FALSE) {
1201        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1202    }
1203
1204    EGLuint64NV ret = 0;
1205    egl_connection_t* const cnx = &gEGLImpl;
1206
1207    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
1208        return cnx->egl.eglGetSystemTimeFrequencyNV();
1209    }
1210
1211    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1212}
1213
1214EGLuint64NV eglGetSystemTimeNV()
1215{
1216    clearError();
1217
1218    if (egl_init_drivers() == EGL_FALSE) {
1219        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1220    }
1221
1222    EGLuint64NV ret = 0;
1223    egl_connection_t* const cnx = &gEGLImpl;
1224
1225    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
1226        return cnx->egl.eglGetSystemTimeNV();
1227    }
1228
1229    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1230}
1231