eglApi.cpp revision 7db993a98b9239bd4e384cc4aa128262fe3cf52c 
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_t * const 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_t* const 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    egl_display_t const * const 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    egl_display_t const * const 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_display_t const* dp = 0;
219    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
220    if (!cnx) 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_display_t const* dp = 0;
237    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
238    if (cnx) {
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(dpy, config, window, surface, cnx);
271            return s;
272        }
273
274        // EGLSurface creation failed
275        native_window_set_buffers_format(window, 0);
276        native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
277    }
278    return EGL_NO_SURFACE;
279}
280
281EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
282                                    NativePixmapType pixmap,
283                                    const EGLint *attrib_list)
284{
285    clearError();
286
287    egl_display_t const* dp = 0;
288    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
289    if (cnx) {
290        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
291                dp->disp.dpy, config, pixmap, attrib_list);
292        if (surface != EGL_NO_SURFACE) {
293            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface, cnx);
294            return s;
295        }
296    }
297    return EGL_NO_SURFACE;
298}
299
300EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
301                                    const EGLint *attrib_list)
302{
303    clearError();
304
305    egl_display_t const* dp = 0;
306    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
307    if (cnx) {
308        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
309                dp->disp.dpy, config, attrib_list);
310        if (surface != EGL_NO_SURFACE) {
311            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface, cnx);
312            return s;
313        }
314    }
315    return EGL_NO_SURFACE;
316}
317
318EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
319{
320    clearError();
321
322    egl_display_t const * const dp = validate_display(dpy);
323    if (!dp) return EGL_FALSE;
324
325    SurfaceRef _s(dp, surface);
326    if (!_s.get())
327        return setError(EGL_BAD_SURFACE, EGL_FALSE);
328
329    egl_surface_t * const s = get_surface(surface);
330    EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
331    if (result == EGL_TRUE) {
332        _s.terminate();
333    }
334    return result;
335}
336
337EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
338                            EGLint attribute, EGLint *value)
339{
340    clearError();
341
342    egl_display_t const * const dp = validate_display(dpy);
343    if (!dp) return EGL_FALSE;
344
345    SurfaceRef _s(dp, surface);
346    if (!_s.get())
347        return setError(EGL_BAD_SURFACE, EGL_FALSE);
348
349    egl_surface_t const * const s = get_surface(surface);
350    return s->cnx->egl.eglQuerySurface(
351            dp->disp.dpy, s->surface, attribute, value);
352}
353
354void EGLAPI eglBeginFrame(EGLDisplay dpy, EGLSurface surface) {
355    ATRACE_CALL();
356    clearError();
357
358    egl_display_t const * const dp = validate_display(dpy);
359    if (!dp) {
360        return;
361    }
362
363    SurfaceRef _s(dp, surface);
364    if (!_s.get()) {
365        setError(EGL_BAD_SURFACE, EGL_FALSE);
366        return;
367    }
368
369    int64_t timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
370
371    egl_surface_t const * const s = get_surface(surface);
372    native_window_set_buffers_timestamp(s->win.get(), timestamp);
373}
374
375// ----------------------------------------------------------------------------
376// Contexts
377// ----------------------------------------------------------------------------
378
379EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
380                            EGLContext share_list, const EGLint *attrib_list)
381{
382    clearError();
383
384    egl_display_t const* dp = 0;
385    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
386    if (cnx) {
387        if (share_list != EGL_NO_CONTEXT) {
388            egl_context_t* const c = get_context(share_list);
389            share_list = c->context;
390        }
391        EGLContext context = cnx->egl.eglCreateContext(
392                dp->disp.dpy, config, share_list, attrib_list);
393        if (context != EGL_NO_CONTEXT) {
394            // figure out if it's a GLESv1 or GLESv2
395            int version = 0;
396            if (attrib_list) {
397                while (*attrib_list != EGL_NONE) {
398                    GLint attr = *attrib_list++;
399                    GLint value = *attrib_list++;
400                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
401                        if (value == 1) {
402                            version = egl_connection_t::GLESv1_INDEX;
403                        } else if (value == 2) {
404                            version = egl_connection_t::GLESv2_INDEX;
405                        }
406                    }
407                };
408            }
409            egl_context_t* c = new egl_context_t(dpy, context, config, cnx, version);
410#if EGL_TRACE
411            if (gEGLDebugLevel > 0)
412                GLTrace_eglCreateContext(version, c);
413#endif
414            return c;
415        }
416    }
417    return EGL_NO_CONTEXT;
418}
419
420EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
421{
422    clearError();
423
424    egl_display_t const * const dp = validate_display(dpy);
425    if (!dp)
426        return EGL_FALSE;
427
428    ContextRef _c(dp, ctx);
429    if (!_c.get())
430        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
431
432    egl_context_t * const c = get_context(ctx);
433    EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
434    if (result == EGL_TRUE) {
435        _c.terminate();
436    }
437    return result;
438}
439
440EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
441                            EGLSurface read, EGLContext ctx)
442{
443    clearError();
444
445    egl_display_t const * const dp = get_display(dpy);
446    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
447
448    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
449    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
450    // a valid but uninitialized display.
451    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
452         (draw != EGL_NO_SURFACE) ) {
453        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
454    }
455
456    // get a reference to the object passed in
457    ContextRef _c(dp, ctx);
458    SurfaceRef _d(dp, draw);
459    SurfaceRef _r(dp, read);
460
461    // validate the context (if not EGL_NO_CONTEXT)
462    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
463        // EGL_NO_CONTEXT is valid
464        return EGL_FALSE;
465    }
466
467    // these are the underlying implementation's object
468    EGLContext impl_ctx  = EGL_NO_CONTEXT;
469    EGLSurface impl_draw = EGL_NO_SURFACE;
470    EGLSurface impl_read = EGL_NO_SURFACE;
471
472    // these are our objects structs passed in
473    egl_context_t       * c = NULL;
474    egl_surface_t const * d = NULL;
475    egl_surface_t const * r = NULL;
476
477    // these are the current objects structs
478    egl_context_t * cur_c = get_context(getContext());
479
480    if (ctx != EGL_NO_CONTEXT) {
481        c = get_context(ctx);
482        impl_ctx = c->context;
483    } else {
484        // no context given, use the implementation of the current context
485        if (cur_c == NULL) {
486            // no current context
487            if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
488                // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
489                return setError(EGL_BAD_MATCH, EGL_FALSE);
490            }
491            // not an error, there is just no current context.
492            return EGL_TRUE;
493        }
494    }
495
496    // retrieve the underlying implementation's draw EGLSurface
497    if (draw != EGL_NO_SURFACE) {
498        d = get_surface(draw);
499        impl_draw = d->surface;
500    }
501
502    // retrieve the underlying implementation's read EGLSurface
503    if (read != EGL_NO_SURFACE) {
504        r = get_surface(read);
505        impl_read = r->surface;
506    }
507
508
509    EGLBoolean result = const_cast<egl_display_t*>(dp)->makeCurrent(c, cur_c,
510            draw, read, ctx,
511            impl_draw, impl_read, impl_ctx);
512
513    if (result == EGL_TRUE) {
514        if (c) {
515            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
516            egl_tls_t::setContext(ctx);
517#if EGL_TRACE
518            if (gEGLDebugLevel > 0)
519                GLTrace_eglMakeCurrent(c->version, c->cnx->hooks[c->version], ctx);
520#endif
521            _c.acquire();
522            _r.acquire();
523            _d.acquire();
524        } else {
525            setGLHooksThreadSpecific(&gHooksNoContext);
526            egl_tls_t::setContext(EGL_NO_CONTEXT);
527        }
528    } else {
529        // this will ALOGE the error
530        result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
531    }
532    return result;
533}
534
535
536EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
537                            EGLint attribute, EGLint *value)
538{
539    clearError();
540
541    egl_display_t const * const dp = validate_display(dpy);
542    if (!dp) return EGL_FALSE;
543
544    ContextRef _c(dp, ctx);
545    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
546
547    egl_context_t * const c = get_context(ctx);
548    return c->cnx->egl.eglQueryContext(
549            dp->disp.dpy, c->context, attribute, value);
550
551}
552
553EGLContext eglGetCurrentContext(void)
554{
555    // could be called before eglInitialize(), but we wouldn't have a context
556    // then, and this function would correctly return EGL_NO_CONTEXT.
557
558    clearError();
559
560    EGLContext ctx = getContext();
561    return ctx;
562}
563
564EGLSurface eglGetCurrentSurface(EGLint readdraw)
565{
566    // could be called before eglInitialize(), but we wouldn't have a context
567    // then, and this function would correctly return EGL_NO_SURFACE.
568
569    clearError();
570
571    EGLContext ctx = getContext();
572    if (ctx) {
573        egl_context_t const * const c = get_context(ctx);
574        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
575        switch (readdraw) {
576            case EGL_READ: return c->read;
577            case EGL_DRAW: return c->draw;
578            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
579        }
580    }
581    return EGL_NO_SURFACE;
582}
583
584EGLDisplay eglGetCurrentDisplay(void)
585{
586    // could be called before eglInitialize(), but we wouldn't have a context
587    // then, and this function would correctly return EGL_NO_DISPLAY.
588
589    clearError();
590
591    EGLContext ctx = getContext();
592    if (ctx) {
593        egl_context_t const * const c = get_context(ctx);
594        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
595        return c->dpy;
596    }
597    return EGL_NO_DISPLAY;
598}
599
600EGLBoolean eglWaitGL(void)
601{
602    clearError();
603
604    egl_connection_t* const cnx = &gEGLImpl;
605    if (!cnx->dso)
606        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
607
608    return cnx->egl.eglWaitGL();
609}
610
611EGLBoolean eglWaitNative(EGLint engine)
612{
613    clearError();
614
615    egl_connection_t* const cnx = &gEGLImpl;
616    if (!cnx->dso)
617        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
618
619    return cnx->egl.eglWaitNative(engine);
620}
621
622EGLint eglGetError(void)
623{
624    EGLint err = EGL_SUCCESS;
625    egl_connection_t* const cnx = &gEGLImpl;
626    if (cnx->dso) {
627        err = cnx->egl.eglGetError();
628    }
629    if (err == EGL_SUCCESS) {
630        err = egl_tls_t::getError();
631    }
632    return err;
633}
634
635__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
636{
637    // eglGetProcAddress() could be the very first function called
638    // in which case we must make sure we've initialized ourselves, this
639    // happens the first time egl_get_display() is called.
640
641    clearError();
642
643    if (egl_init_drivers() == EGL_FALSE) {
644        setError(EGL_BAD_PARAMETER, NULL);
645        return  NULL;
646    }
647
648    // The EGL_ANDROID_blob_cache extension should not be exposed to
649    // applications.  It is used internally by the Android EGL layer.
650    if (!strcmp(procname, "eglSetBlobCacheFuncsANDROID")) {
651        return NULL;
652    }
653
654    __eglMustCastToProperFunctionPointerType addr;
655    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
656    if (addr) return addr;
657
658
659    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
660    pthread_mutex_lock(&sExtensionMapMutex);
661
662        /*
663         * Since eglGetProcAddress() is not associated to anything, it needs
664         * to return a function pointer that "works" regardless of what
665         * the current context is.
666         *
667         * For this reason, we return a "forwarder", a small stub that takes
668         * care of calling the function associated with the context
669         * currently bound.
670         *
671         * We first look for extensions we've already resolved, if we're seeing
672         * this extension for the first time, we go through all our
673         * implementations and call eglGetProcAddress() and record the
674         * result in the appropriate implementation hooks and return the
675         * address of the forwarder corresponding to that hook set.
676         *
677         */
678
679        const String8 name(procname);
680        addr = sGLExtentionMap.valueFor(name);
681        const int slot = sGLExtentionSlot;
682
683        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
684                "no more slots for eglGetProcAddress(\"%s\")",
685                procname);
686
687#if EGL_TRACE
688        gl_hooks_t *debugHooks = GLTrace_getGLHooks();
689#endif
690
691        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
692            bool found = false;
693
694            egl_connection_t* const cnx = &gEGLImpl;
695            if (cnx->dso && cnx->egl.eglGetProcAddress) {
696                found = true;
697                // Extensions are independent of the bound context
698                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
699                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
700#if EGL_TRACE
701                debugHooks->ext.extensions[slot] =
702                gHooksTrace.ext.extensions[slot] =
703#endif
704                        cnx->egl.eglGetProcAddress(procname);
705            }
706
707            if (found) {
708                addr = gExtensionForwarders[slot];
709                sGLExtentionMap.add(name, addr);
710                sGLExtentionSlot++;
711            }
712        }
713
714    pthread_mutex_unlock(&sExtensionMapMutex);
715    return addr;
716}
717
718EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
719{
720    ATRACE_CALL();
721    clearError();
722
723    egl_display_t const * const dp = validate_display(dpy);
724    if (!dp) return EGL_FALSE;
725
726    SurfaceRef _s(dp, draw);
727    if (!_s.get())
728        return setError(EGL_BAD_SURFACE, EGL_FALSE);
729
730#if EGL_TRACE
731    if (gEGLDebugLevel > 0)
732        GLTrace_eglSwapBuffers(dpy, draw);
733#endif
734
735    egl_surface_t const * const s = get_surface(draw);
736
737    if (CC_UNLIKELY(dp->finishOnSwap)) {
738        uint32_t pixel;
739        egl_context_t * const c = get_context( egl_tls_t::getContext() );
740        if (c) {
741            // glReadPixels() ensures that the frame is complete
742            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
743                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
744        }
745    }
746
747    return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
748}
749
750EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
751                            NativePixmapType target)
752{
753    clearError();
754
755    egl_display_t const * const dp = validate_display(dpy);
756    if (!dp) return EGL_FALSE;
757
758    SurfaceRef _s(dp, surface);
759    if (!_s.get())
760        return setError(EGL_BAD_SURFACE, EGL_FALSE);
761
762    egl_surface_t const * const s = get_surface(surface);
763    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
764}
765
766const char* eglQueryString(EGLDisplay dpy, EGLint name)
767{
768    clearError();
769
770    egl_display_t const * const dp = validate_display(dpy);
771    if (!dp) return (const char *) NULL;
772
773    switch (name) {
774        case EGL_VENDOR:
775            return dp->getVendorString();
776        case EGL_VERSION:
777            return dp->getVersionString();
778        case EGL_EXTENSIONS:
779            return dp->getExtensionString();
780        case EGL_CLIENT_APIS:
781            return dp->getClientApiString();
782        case EGL_VERSION_HW_ANDROID:
783            return dp->disp.queryString.version;
784    }
785    return setError(EGL_BAD_PARAMETER, (const char *)0);
786}
787
788
789// ----------------------------------------------------------------------------
790// EGL 1.1
791// ----------------------------------------------------------------------------
792
793EGLBoolean eglSurfaceAttrib(
794        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
795{
796    clearError();
797
798    egl_display_t const * const dp = validate_display(dpy);
799    if (!dp) return EGL_FALSE;
800
801    SurfaceRef _s(dp, surface);
802    if (!_s.get())
803        return setError(EGL_BAD_SURFACE, EGL_FALSE);
804
805    egl_surface_t const * const s = get_surface(surface);
806    if (s->cnx->egl.eglSurfaceAttrib) {
807        return s->cnx->egl.eglSurfaceAttrib(
808                dp->disp.dpy, s->surface, attribute, value);
809    }
810    return setError(EGL_BAD_SURFACE, EGL_FALSE);
811}
812
813EGLBoolean eglBindTexImage(
814        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
815{
816    clearError();
817
818    egl_display_t const * const dp = validate_display(dpy);
819    if (!dp) return EGL_FALSE;
820
821    SurfaceRef _s(dp, surface);
822    if (!_s.get())
823        return setError(EGL_BAD_SURFACE, EGL_FALSE);
824
825    egl_surface_t const * const s = get_surface(surface);
826    if (s->cnx->egl.eglBindTexImage) {
827        return s->cnx->egl.eglBindTexImage(
828                dp->disp.dpy, s->surface, buffer);
829    }
830    return setError(EGL_BAD_SURFACE, EGL_FALSE);
831}
832
833EGLBoolean eglReleaseTexImage(
834        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
835{
836    clearError();
837
838    egl_display_t const * const dp = validate_display(dpy);
839    if (!dp) return EGL_FALSE;
840
841    SurfaceRef _s(dp, surface);
842    if (!_s.get())
843        return setError(EGL_BAD_SURFACE, EGL_FALSE);
844
845    egl_surface_t const * const s = get_surface(surface);
846    if (s->cnx->egl.eglReleaseTexImage) {
847        return s->cnx->egl.eglReleaseTexImage(
848                dp->disp.dpy, s->surface, buffer);
849    }
850    return setError(EGL_BAD_SURFACE, EGL_FALSE);
851}
852
853EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
854{
855    clearError();
856
857    egl_display_t const * const dp = validate_display(dpy);
858    if (!dp) return EGL_FALSE;
859
860    EGLBoolean res = EGL_TRUE;
861    egl_connection_t* const cnx = &gEGLImpl;
862    if (cnx->dso && cnx->egl.eglSwapInterval) {
863        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
864    }
865
866    return res;
867}
868
869
870// ----------------------------------------------------------------------------
871// EGL 1.2
872// ----------------------------------------------------------------------------
873
874EGLBoolean eglWaitClient(void)
875{
876    clearError();
877
878    egl_connection_t* const cnx = &gEGLImpl;
879    if (!cnx->dso)
880        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
881
882    EGLBoolean res;
883    if (cnx->egl.eglWaitClient) {
884        res = cnx->egl.eglWaitClient();
885    } else {
886        res = cnx->egl.eglWaitGL();
887    }
888    return res;
889}
890
891EGLBoolean eglBindAPI(EGLenum api)
892{
893    clearError();
894
895    if (egl_init_drivers() == EGL_FALSE) {
896        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
897    }
898
899    // bind this API on all EGLs
900    EGLBoolean res = EGL_TRUE;
901    egl_connection_t* const cnx = &gEGLImpl;
902    if (cnx->dso && cnx->egl.eglBindAPI) {
903        res = cnx->egl.eglBindAPI(api);
904    }
905    return res;
906}
907
908EGLenum eglQueryAPI(void)
909{
910    clearError();
911
912    if (egl_init_drivers() == EGL_FALSE) {
913        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
914    }
915
916    egl_connection_t* const cnx = &gEGLImpl;
917    if (cnx->dso && cnx->egl.eglQueryAPI) {
918        return cnx->egl.eglQueryAPI();
919    }
920
921    // or, it can only be OpenGL ES
922    return EGL_OPENGL_ES_API;
923}
924
925EGLBoolean eglReleaseThread(void)
926{
927    clearError();
928
929    // If there is context bound to the thread, release it
930    egl_display_t::loseCurrent(get_context(getContext()));
931
932    egl_connection_t* const cnx = &gEGLImpl;
933    if (cnx->dso && cnx->egl.eglReleaseThread) {
934        cnx->egl.eglReleaseThread();
935    }
936
937    egl_tls_t::clearTLS();
938#if EGL_TRACE
939    if (gEGLDebugLevel > 0)
940        GLTrace_eglReleaseThread();
941#endif
942    return EGL_TRUE;
943}
944
945EGLSurface eglCreatePbufferFromClientBuffer(
946          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
947          EGLConfig config, const EGLint *attrib_list)
948{
949    clearError();
950
951    egl_display_t const* dp = 0;
952    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
953    if (!cnx) return EGL_FALSE;
954    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
955        return cnx->egl.eglCreatePbufferFromClientBuffer(
956                dp->disp.dpy, buftype, buffer, config, attrib_list);
957    }
958    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
959}
960
961// ----------------------------------------------------------------------------
962// EGL_EGLEXT_VERSION 3
963// ----------------------------------------------------------------------------
964
965EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
966        const EGLint *attrib_list)
967{
968    clearError();
969
970    egl_display_t const * const dp = validate_display(dpy);
971    if (!dp) return EGL_FALSE;
972
973    SurfaceRef _s(dp, surface);
974    if (!_s.get())
975        return setError(EGL_BAD_SURFACE, EGL_FALSE);
976
977    egl_surface_t const * const s = get_surface(surface);
978    if (s->cnx->egl.eglLockSurfaceKHR) {
979        return s->cnx->egl.eglLockSurfaceKHR(
980                dp->disp.dpy, s->surface, attrib_list);
981    }
982    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
983}
984
985EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
986{
987    clearError();
988
989    egl_display_t const * const dp = validate_display(dpy);
990    if (!dp) return EGL_FALSE;
991
992    SurfaceRef _s(dp, surface);
993    if (!_s.get())
994        return setError(EGL_BAD_SURFACE, EGL_FALSE);
995
996    egl_surface_t const * const s = get_surface(surface);
997    if (s->cnx->egl.eglUnlockSurfaceKHR) {
998        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
999    }
1000    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1001}
1002
1003EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1004        EGLClientBuffer buffer, const EGLint *attrib_list)
1005{
1006    clearError();
1007
1008    egl_display_t const * const dp = validate_display(dpy);
1009    if (!dp) return EGL_NO_IMAGE_KHR;
1010
1011    ContextRef _c(dp, ctx);
1012    egl_context_t * const c = _c.get();
1013
1014    EGLImageKHR result = EGL_NO_IMAGE_KHR;
1015    egl_connection_t* const cnx = &gEGLImpl;
1016    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
1017        result = cnx->egl.eglCreateImageKHR(
1018                dp->disp.dpy,
1019                c ? c->context : EGL_NO_CONTEXT,
1020                target, buffer, attrib_list);
1021    }
1022    return result;
1023}
1024
1025EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1026{
1027    clearError();
1028
1029    egl_display_t const * const dp = validate_display(dpy);
1030    if (!dp) return EGL_FALSE;
1031
1032    egl_connection_t* const cnx = &gEGLImpl;
1033    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
1034        cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
1035    }
1036    return EGL_TRUE;
1037}
1038
1039// ----------------------------------------------------------------------------
1040// EGL_EGLEXT_VERSION 5
1041// ----------------------------------------------------------------------------
1042
1043
1044EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1045{
1046    clearError();
1047
1048    egl_display_t const * const dp = validate_display(dpy);
1049    if (!dp) return EGL_NO_SYNC_KHR;
1050
1051    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1052    egl_connection_t* const cnx = &gEGLImpl;
1053    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
1054        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
1055    }
1056    return result;
1057}
1058
1059EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1060{
1061    clearError();
1062
1063    egl_display_t const * const dp = validate_display(dpy);
1064    if (!dp) return EGL_FALSE;
1065
1066    EGLBoolean result = EGL_FALSE;
1067    egl_connection_t* const cnx = &gEGLImpl;
1068    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
1069        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
1070    }
1071    return result;
1072}
1073
1074EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync,
1075        EGLint flags, EGLTimeKHR timeout)
1076{
1077    clearError();
1078
1079    egl_display_t const * const dp = validate_display(dpy);
1080    if (!dp) return EGL_FALSE;
1081
1082    EGLBoolean result = EGL_FALSE;
1083    egl_connection_t* const cnx = &gEGLImpl;
1084    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
1085        result = cnx->egl.eglClientWaitSyncKHR(
1086                dp->disp.dpy, sync, flags, timeout);
1087    }
1088    return result;
1089}
1090
1091EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync,
1092        EGLint attribute, EGLint *value)
1093{
1094    clearError();
1095
1096    egl_display_t const * const dp = validate_display(dpy);
1097    if (!dp) return EGL_FALSE;
1098
1099    EGLBoolean result = EGL_FALSE;
1100    egl_connection_t* const cnx = &gEGLImpl;
1101    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
1102        result = cnx->egl.eglGetSyncAttribKHR(
1103                dp->disp.dpy, sync, attribute, value);
1104    }
1105    return result;
1106}
1107
1108// ----------------------------------------------------------------------------
1109// ANDROID extensions
1110// ----------------------------------------------------------------------------
1111
1112/* ANDROID extensions entry-point go here */
1113
1114// ----------------------------------------------------------------------------
1115// NVIDIA extensions
1116// ----------------------------------------------------------------------------
1117EGLuint64NV eglGetSystemTimeFrequencyNV()
1118{
1119    clearError();
1120
1121    if (egl_init_drivers() == EGL_FALSE) {
1122        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1123    }
1124
1125    EGLuint64NV ret = 0;
1126    egl_connection_t* const cnx = &gEGLImpl;
1127
1128    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
1129        return cnx->egl.eglGetSystemTimeFrequencyNV();
1130    }
1131
1132    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1133}
1134
1135EGLuint64NV eglGetSystemTimeNV()
1136{
1137    clearError();
1138
1139    if (egl_init_drivers() == EGL_FALSE) {
1140        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1141    }
1142
1143    EGLuint64NV ret = 0;
1144    egl_connection_t* const cnx = &gEGLImpl;
1145
1146    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
1147        return cnx->egl.eglGetSystemTimeNV();
1148    }
1149
1150    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1151}
1152