eglApi.cpp revision be3c3e4ecad501eecfe1f7a424a792f0f7f3f307 
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        if (attrib_list) {
208            char value[PROPERTY_VALUE_MAX];
209            property_get("debug.egl.force_msaa", value, "false");
210
211            if (!strcmp(value, "true")) {
212                size_t attribCount = 0;
213                EGLint attrib = attrib_list[0];
214
215                // Only enable MSAA if the context is OpenGL ES 2.0 and
216                // if no caveat is requested
217                const EGLint *attribRendererable = NULL;
218                const EGLint *attribCaveat = NULL;
219
220                // Count the number of attributes and look for
221                // EGL_RENDERABLE_TYPE and EGL_CONFIG_CAVEAT
222                while (attrib != EGL_NONE) {
223                    attrib = attrib_list[attribCount];
224                    switch (attrib) {
225                        case EGL_RENDERABLE_TYPE:
226                            attribRendererable = &attrib_list[attribCount];
227                            break;
228                        case EGL_CONFIG_CAVEAT:
229                            attribCaveat = &attrib_list[attribCount];
230                            break;
231                    }
232                    attribCount++;
233                }
234
235                if (attribRendererable && attribRendererable[1] == EGL_OPENGL_ES2_BIT &&
236                        (!attribCaveat || attribCaveat[1] != EGL_NONE)) {
237
238                    // Insert 2 extra attributes to force-enable MSAA 4x
239                    EGLint aaAttribs[attribCount + 4];
240                    aaAttribs[0] = EGL_SAMPLE_BUFFERS;
241                    aaAttribs[1] = 1;
242                    aaAttribs[2] = EGL_SAMPLES;
243                    aaAttribs[3] = 4;
244
245                    memcpy(&aaAttribs[4], attrib_list, attribCount * sizeof(EGLint));
246
247                    EGLint numConfigAA;
248                    EGLBoolean resAA = cnx->egl.eglChooseConfig(
249                            dp->disp.dpy, aaAttribs, configs, config_size, &numConfigAA);
250
251                    if (resAA == EGL_TRUE && numConfigAA > 0) {
252                        ALOGD("Enabling MSAA 4x");
253                        *num_config = numConfigAA;
254                        return resAA;
255                    }
256                }
257            }
258        }
259
260        res = cnx->egl.eglChooseConfig(
261                dp->disp.dpy, attrib_list, configs, config_size, num_config);
262    }
263    return res;
264}
265
266EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
267        EGLint attribute, EGLint *value)
268{
269    clearError();
270
271    egl_connection_t* cnx = NULL;
272    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
273    if (!dp) return EGL_FALSE;
274
275    return cnx->egl.eglGetConfigAttrib(
276            dp->disp.dpy, config, attribute, value);
277}
278
279// ----------------------------------------------------------------------------
280// surfaces
281// ----------------------------------------------------------------------------
282
283EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
284                                    NativeWindowType window,
285                                    const EGLint *attrib_list)
286{
287    clearError();
288
289    egl_connection_t* cnx = NULL;
290    egl_display_ptr dp = validate_display_connection(dpy, cnx);
291    if (dp) {
292        EGLDisplay iDpy = dp->disp.dpy;
293        EGLint format;
294
295        if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != OK) {
296            ALOGE("EGLNativeWindowType %p already connected to another API",
297                    window);
298            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
299        }
300
301        // set the native window's buffers format to match this config
302        if (cnx->egl.eglGetConfigAttrib(iDpy,
303                config, EGL_NATIVE_VISUAL_ID, &format)) {
304            if (format != 0) {
305                int err = native_window_set_buffers_format(window, format);
306                if (err != 0) {
307                    ALOGE("error setting native window pixel format: %s (%d)",
308                            strerror(-err), err);
309                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
310                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
311                }
312            }
313        }
314
315        // the EGL spec requires that a new EGLSurface default to swap interval
316        // 1, so explicitly set that on the window here.
317        ANativeWindow* anw = reinterpret_cast<ANativeWindow*>(window);
318        anw->setSwapInterval(anw, 1);
319
320        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
321                iDpy, config, window, attrib_list);
322        if (surface != EGL_NO_SURFACE) {
323            egl_surface_t* s = new egl_surface_t(dp.get(), config, window,
324                    surface, cnx);
325            return s;
326        }
327
328        // EGLSurface creation failed
329        native_window_set_buffers_format(window, 0);
330        native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
331    }
332    return EGL_NO_SURFACE;
333}
334
335EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
336                                    NativePixmapType pixmap,
337                                    const EGLint *attrib_list)
338{
339    clearError();
340
341    egl_connection_t* cnx = NULL;
342    egl_display_ptr dp = validate_display_connection(dpy, cnx);
343    if (dp) {
344        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
345                dp->disp.dpy, config, pixmap, attrib_list);
346        if (surface != EGL_NO_SURFACE) {
347            egl_surface_t* s = new egl_surface_t(dp.get(), config, NULL,
348                    surface, cnx);
349            return s;
350        }
351    }
352    return EGL_NO_SURFACE;
353}
354
355EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
356                                    const EGLint *attrib_list)
357{
358    clearError();
359
360    egl_connection_t* cnx = NULL;
361    egl_display_ptr dp = validate_display_connection(dpy, cnx);
362    if (dp) {
363        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
364                dp->disp.dpy, config, attrib_list);
365        if (surface != EGL_NO_SURFACE) {
366            egl_surface_t* s = new egl_surface_t(dp.get(), config, NULL,
367                    surface, cnx);
368            return s;
369        }
370    }
371    return EGL_NO_SURFACE;
372}
373
374EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
375{
376    clearError();
377
378    const egl_display_ptr dp = validate_display(dpy);
379    if (!dp) return EGL_FALSE;
380
381    SurfaceRef _s(dp.get(), surface);
382    if (!_s.get())
383        return setError(EGL_BAD_SURFACE, EGL_FALSE);
384
385    egl_surface_t * const s = get_surface(surface);
386    EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
387    if (result == EGL_TRUE) {
388        _s.terminate();
389    }
390    return result;
391}
392
393EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
394                            EGLint attribute, EGLint *value)
395{
396    clearError();
397
398    const egl_display_ptr dp = validate_display(dpy);
399    if (!dp) return EGL_FALSE;
400
401    SurfaceRef _s(dp.get(), surface);
402    if (!_s.get())
403        return setError(EGL_BAD_SURFACE, EGL_FALSE);
404
405    egl_surface_t const * const s = get_surface(surface);
406    return s->cnx->egl.eglQuerySurface(
407            dp->disp.dpy, s->surface, attribute, value);
408}
409
410void EGLAPI eglBeginFrame(EGLDisplay dpy, EGLSurface surface) {
411    ATRACE_CALL();
412    clearError();
413
414    const egl_display_ptr dp = validate_display(dpy);
415    if (!dp) {
416        return;
417    }
418
419    SurfaceRef _s(dp.get(), surface);
420    if (!_s.get()) {
421        setError(EGL_BAD_SURFACE, EGL_FALSE);
422        return;
423    }
424
425    int64_t timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
426
427    egl_surface_t const * const s = get_surface(surface);
428    native_window_set_buffers_timestamp(s->win.get(), timestamp);
429}
430
431// ----------------------------------------------------------------------------
432// Contexts
433// ----------------------------------------------------------------------------
434
435EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
436                            EGLContext share_list, const EGLint *attrib_list)
437{
438    clearError();
439
440    egl_connection_t* cnx = NULL;
441    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
442    if (dpy) {
443        if (share_list != EGL_NO_CONTEXT) {
444            egl_context_t* const c = get_context(share_list);
445            share_list = c->context;
446        }
447        EGLContext context = cnx->egl.eglCreateContext(
448                dp->disp.dpy, config, share_list, attrib_list);
449        if (context != EGL_NO_CONTEXT) {
450            // figure out if it's a GLESv1 or GLESv2
451            int version = 0;
452            if (attrib_list) {
453                while (*attrib_list != EGL_NONE) {
454                    GLint attr = *attrib_list++;
455                    GLint value = *attrib_list++;
456                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
457                        if (value == 1) {
458                            version = egl_connection_t::GLESv1_INDEX;
459                        } else if (value == 2) {
460                            version = egl_connection_t::GLESv2_INDEX;
461                        }
462                    }
463                };
464            }
465            egl_context_t* c = new egl_context_t(dpy, context, config, cnx,
466                    version);
467#if EGL_TRACE
468            if (gEGLDebugLevel > 0)
469                GLTrace_eglCreateContext(version, c);
470#endif
471            return c;
472        } else {
473            EGLint error = eglGetError();
474            ALOGE_IF(error == EGL_SUCCESS,
475                    "eglCreateContext(%p, %p, %p, %p) returned EGL_NO_CONTEXT "
476                    "but no EGL error!",
477                    dpy, config, share_list, attrib_list);
478        }
479    }
480    return EGL_NO_CONTEXT;
481}
482
483EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
484{
485    clearError();
486
487    const egl_display_ptr dp = validate_display(dpy);
488    if (!dp)
489        return EGL_FALSE;
490
491    ContextRef _c(dp.get(), ctx);
492    if (!_c.get())
493        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
494
495    egl_context_t * const c = get_context(ctx);
496    EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
497    if (result == EGL_TRUE) {
498        _c.terminate();
499    }
500    return result;
501}
502
503EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
504                            EGLSurface read, EGLContext ctx)
505{
506    clearError();
507
508    egl_display_ptr dp = validate_display(dpy);
509    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
510
511    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
512    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
513    // a valid but uninitialized display.
514    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
515         (draw != EGL_NO_SURFACE) ) {
516        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
517    }
518
519    // get a reference to the object passed in
520    ContextRef _c(dp.get(), ctx);
521    SurfaceRef _d(dp.get(), draw);
522    SurfaceRef _r(dp.get(), read);
523
524    // validate the context (if not EGL_NO_CONTEXT)
525    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
526        // EGL_NO_CONTEXT is valid
527        return EGL_FALSE;
528    }
529
530    // these are the underlying implementation's object
531    EGLContext impl_ctx  = EGL_NO_CONTEXT;
532    EGLSurface impl_draw = EGL_NO_SURFACE;
533    EGLSurface impl_read = EGL_NO_SURFACE;
534
535    // these are our objects structs passed in
536    egl_context_t       * c = NULL;
537    egl_surface_t const * d = NULL;
538    egl_surface_t const * r = NULL;
539
540    // these are the current objects structs
541    egl_context_t * cur_c = get_context(getContext());
542
543    if (ctx != EGL_NO_CONTEXT) {
544        c = get_context(ctx);
545        impl_ctx = c->context;
546    } else {
547        // no context given, use the implementation of the current context
548        if (cur_c == NULL) {
549            // no current context
550            if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
551                // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
552                return setError(EGL_BAD_MATCH, EGL_FALSE);
553            }
554            // not an error, there is just no current context.
555            return EGL_TRUE;
556        }
557    }
558
559    // retrieve the underlying implementation's draw EGLSurface
560    if (draw != EGL_NO_SURFACE) {
561        d = get_surface(draw);
562        impl_draw = d->surface;
563    }
564
565    // retrieve the underlying implementation's read EGLSurface
566    if (read != EGL_NO_SURFACE) {
567        r = get_surface(read);
568        impl_read = r->surface;
569    }
570
571
572    EGLBoolean result = dp->makeCurrent(c, cur_c,
573            draw, read, ctx,
574            impl_draw, impl_read, impl_ctx);
575
576    if (result == EGL_TRUE) {
577        if (c) {
578            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
579            egl_tls_t::setContext(ctx);
580#if EGL_TRACE
581            if (gEGLDebugLevel > 0)
582                GLTrace_eglMakeCurrent(c->version, c->cnx->hooks[c->version], ctx);
583#endif
584            _c.acquire();
585            _r.acquire();
586            _d.acquire();
587        } else {
588            setGLHooksThreadSpecific(&gHooksNoContext);
589            egl_tls_t::setContext(EGL_NO_CONTEXT);
590        }
591    } else {
592        // this will ALOGE the error
593        result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
594    }
595    return result;
596}
597
598
599EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
600                            EGLint attribute, EGLint *value)
601{
602    clearError();
603
604    const egl_display_ptr dp = validate_display(dpy);
605    if (!dp) return EGL_FALSE;
606
607    ContextRef _c(dp.get(), ctx);
608    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
609
610    egl_context_t * const c = get_context(ctx);
611    return c->cnx->egl.eglQueryContext(
612            dp->disp.dpy, c->context, attribute, value);
613
614}
615
616EGLContext eglGetCurrentContext(void)
617{
618    // could be called before eglInitialize(), but we wouldn't have a context
619    // then, and this function would correctly return EGL_NO_CONTEXT.
620
621    clearError();
622
623    EGLContext ctx = getContext();
624    return ctx;
625}
626
627EGLSurface eglGetCurrentSurface(EGLint readdraw)
628{
629    // could be called before eglInitialize(), but we wouldn't have a context
630    // then, and this function would correctly return EGL_NO_SURFACE.
631
632    clearError();
633
634    EGLContext ctx = getContext();
635    if (ctx) {
636        egl_context_t const * const c = get_context(ctx);
637        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
638        switch (readdraw) {
639            case EGL_READ: return c->read;
640            case EGL_DRAW: return c->draw;
641            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
642        }
643    }
644    return EGL_NO_SURFACE;
645}
646
647EGLDisplay eglGetCurrentDisplay(void)
648{
649    // could be called before eglInitialize(), but we wouldn't have a context
650    // then, and this function would correctly return EGL_NO_DISPLAY.
651
652    clearError();
653
654    EGLContext ctx = getContext();
655    if (ctx) {
656        egl_context_t const * const c = get_context(ctx);
657        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
658        return c->dpy;
659    }
660    return EGL_NO_DISPLAY;
661}
662
663EGLBoolean eglWaitGL(void)
664{
665    clearError();
666
667    egl_connection_t* const cnx = &gEGLImpl;
668    if (!cnx->dso)
669        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
670
671    return cnx->egl.eglWaitGL();
672}
673
674EGLBoolean eglWaitNative(EGLint engine)
675{
676    clearError();
677
678    egl_connection_t* const cnx = &gEGLImpl;
679    if (!cnx->dso)
680        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
681
682    return cnx->egl.eglWaitNative(engine);
683}
684
685EGLint eglGetError(void)
686{
687    EGLint err = EGL_SUCCESS;
688    egl_connection_t* const cnx = &gEGLImpl;
689    if (cnx->dso) {
690        err = cnx->egl.eglGetError();
691    }
692    if (err == EGL_SUCCESS) {
693        err = egl_tls_t::getError();
694    }
695    return err;
696}
697
698__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
699{
700    // eglGetProcAddress() could be the very first function called
701    // in which case we must make sure we've initialized ourselves, this
702    // happens the first time egl_get_display() is called.
703
704    clearError();
705
706    if (egl_init_drivers() == EGL_FALSE) {
707        setError(EGL_BAD_PARAMETER, NULL);
708        return  NULL;
709    }
710
711    // These extensions should not be exposed to applications. They're used
712    // internally by the Android EGL layer.
713    if (!strcmp(procname, "eglSetBlobCacheFuncsANDROID") ||
714        !strcmp(procname, "eglDupNativeFenceFDANDROID") ||
715        !strcmp(procname, "eglWaitSyncANDROID") ||
716        !strcmp(procname, "eglHibernateProcessIMG") ||
717        !strcmp(procname, "eglAwakenProcessIMG")) {
718        return NULL;
719    }
720
721    __eglMustCastToProperFunctionPointerType addr;
722    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
723    if (addr) return addr;
724
725
726    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
727    pthread_mutex_lock(&sExtensionMapMutex);
728
729        /*
730         * Since eglGetProcAddress() is not associated to anything, it needs
731         * to return a function pointer that "works" regardless of what
732         * the current context is.
733         *
734         * For this reason, we return a "forwarder", a small stub that takes
735         * care of calling the function associated with the context
736         * currently bound.
737         *
738         * We first look for extensions we've already resolved, if we're seeing
739         * this extension for the first time, we go through all our
740         * implementations and call eglGetProcAddress() and record the
741         * result in the appropriate implementation hooks and return the
742         * address of the forwarder corresponding to that hook set.
743         *
744         */
745
746        const String8 name(procname);
747        addr = sGLExtentionMap.valueFor(name);
748        const int slot = sGLExtentionSlot;
749
750        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
751                "no more slots for eglGetProcAddress(\"%s\")",
752                procname);
753
754#if EGL_TRACE
755        gl_hooks_t *debugHooks = GLTrace_getGLHooks();
756#endif
757
758        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
759            bool found = false;
760
761            egl_connection_t* const cnx = &gEGLImpl;
762            if (cnx->dso && cnx->egl.eglGetProcAddress) {
763                found = true;
764                // Extensions are independent of the bound context
765                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
766                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
767#if EGL_TRACE
768                debugHooks->ext.extensions[slot] =
769                gHooksTrace.ext.extensions[slot] =
770#endif
771                        cnx->egl.eglGetProcAddress(procname);
772            }
773
774            if (found) {
775                addr = gExtensionForwarders[slot];
776                sGLExtentionMap.add(name, addr);
777                sGLExtentionSlot++;
778            }
779        }
780
781    pthread_mutex_unlock(&sExtensionMapMutex);
782    return addr;
783}
784
785class FrameCompletionThread : public Thread {
786public:
787
788    static void queueSync(EGLSyncKHR sync) {
789        static sp<FrameCompletionThread> thread(new FrameCompletionThread);
790        static bool running = false;
791        if (!running) {
792            thread->run("GPUFrameCompletion");
793            running = true;
794        }
795        {
796            Mutex::Autolock lock(thread->mMutex);
797            ScopedTrace st(ATRACE_TAG, String8::format("kicked off frame %d",
798                    thread->mFramesQueued).string());
799            thread->mQueue.push_back(sync);
800            thread->mCondition.signal();
801            thread->mFramesQueued++;
802            ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
803        }
804    }
805
806private:
807    FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {}
808
809    virtual bool threadLoop() {
810        EGLSyncKHR sync;
811        uint32_t frameNum;
812        {
813            Mutex::Autolock lock(mMutex);
814            while (mQueue.isEmpty()) {
815                mCondition.wait(mMutex);
816            }
817            sync = mQueue[0];
818            frameNum = mFramesCompleted;
819        }
820        EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
821        {
822            ScopedTrace st(ATRACE_TAG, String8::format("waiting for frame %d",
823                    frameNum).string());
824            EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
825            if (result == EGL_FALSE) {
826                ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
827            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
828                ALOGE("FrameCompletion: timeout waiting for fence");
829            }
830            eglDestroySyncKHR(dpy, sync);
831        }
832        {
833            Mutex::Autolock lock(mMutex);
834            mQueue.removeAt(0);
835            mFramesCompleted++;
836            ATRACE_INT("GPU Frames Outstanding", mQueue.size());
837        }
838        return true;
839    }
840
841    uint32_t mFramesQueued;
842    uint32_t mFramesCompleted;
843    Vector<EGLSyncKHR> mQueue;
844    Condition mCondition;
845    Mutex mMutex;
846};
847
848EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
849{
850    ATRACE_CALL();
851    clearError();
852
853    const egl_display_ptr dp = validate_display(dpy);
854    if (!dp) return EGL_FALSE;
855
856    SurfaceRef _s(dp.get(), draw);
857    if (!_s.get())
858        return setError(EGL_BAD_SURFACE, EGL_FALSE);
859
860#if EGL_TRACE
861    if (gEGLDebugLevel > 0)
862        GLTrace_eglSwapBuffers(dpy, draw);
863#endif
864
865    egl_surface_t const * const s = get_surface(draw);
866
867    if (CC_UNLIKELY(dp->finishOnSwap)) {
868        uint32_t pixel;
869        egl_context_t * const c = get_context( egl_tls_t::getContext() );
870        if (c) {
871            // glReadPixels() ensures that the frame is complete
872            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
873                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
874        }
875    }
876
877    EGLBoolean result = s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
878
879    if (CC_UNLIKELY(dp->traceGpuCompletion)) {
880        EGLSyncKHR sync = EGL_NO_SYNC_KHR;
881        {
882            sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
883        }
884        if (sync != EGL_NO_SYNC_KHR) {
885            FrameCompletionThread::queueSync(sync);
886        }
887    }
888
889    return result;
890}
891
892EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
893                            NativePixmapType target)
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    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
906}
907
908const char* eglQueryString(EGLDisplay dpy, EGLint name)
909{
910    clearError();
911
912    const egl_display_ptr dp = validate_display(dpy);
913    if (!dp) return (const char *) NULL;
914
915    switch (name) {
916        case EGL_VENDOR:
917            return dp->getVendorString();
918        case EGL_VERSION:
919            return dp->getVersionString();
920        case EGL_EXTENSIONS:
921            return dp->getExtensionString();
922        case EGL_CLIENT_APIS:
923            return dp->getClientApiString();
924        case EGL_VERSION_HW_ANDROID:
925            return dp->disp.queryString.version;
926    }
927    return setError(EGL_BAD_PARAMETER, (const char *)0);
928}
929
930
931// ----------------------------------------------------------------------------
932// EGL 1.1
933// ----------------------------------------------------------------------------
934
935EGLBoolean eglSurfaceAttrib(
936        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
937{
938    clearError();
939
940    const egl_display_ptr dp = validate_display(dpy);
941    if (!dp) return EGL_FALSE;
942
943    SurfaceRef _s(dp.get(), surface);
944    if (!_s.get())
945        return setError(EGL_BAD_SURFACE, EGL_FALSE);
946
947    egl_surface_t const * const s = get_surface(surface);
948    if (s->cnx->egl.eglSurfaceAttrib) {
949        return s->cnx->egl.eglSurfaceAttrib(
950                dp->disp.dpy, s->surface, attribute, value);
951    }
952    return setError(EGL_BAD_SURFACE, EGL_FALSE);
953}
954
955EGLBoolean eglBindTexImage(
956        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
957{
958    clearError();
959
960    const egl_display_ptr dp = validate_display(dpy);
961    if (!dp) return EGL_FALSE;
962
963    SurfaceRef _s(dp.get(), surface);
964    if (!_s.get())
965        return setError(EGL_BAD_SURFACE, EGL_FALSE);
966
967    egl_surface_t const * const s = get_surface(surface);
968    if (s->cnx->egl.eglBindTexImage) {
969        return s->cnx->egl.eglBindTexImage(
970                dp->disp.dpy, s->surface, buffer);
971    }
972    return setError(EGL_BAD_SURFACE, EGL_FALSE);
973}
974
975EGLBoolean eglReleaseTexImage(
976        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
977{
978    clearError();
979
980    const egl_display_ptr dp = validate_display(dpy);
981    if (!dp) return EGL_FALSE;
982
983    SurfaceRef _s(dp.get(), surface);
984    if (!_s.get())
985        return setError(EGL_BAD_SURFACE, EGL_FALSE);
986
987    egl_surface_t const * const s = get_surface(surface);
988    if (s->cnx->egl.eglReleaseTexImage) {
989        return s->cnx->egl.eglReleaseTexImage(
990                dp->disp.dpy, s->surface, buffer);
991    }
992    return setError(EGL_BAD_SURFACE, EGL_FALSE);
993}
994
995EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
996{
997    clearError();
998
999    const egl_display_ptr dp = validate_display(dpy);
1000    if (!dp) return EGL_FALSE;
1001
1002    EGLBoolean res = EGL_TRUE;
1003    egl_connection_t* const cnx = &gEGLImpl;
1004    if (cnx->dso && cnx->egl.eglSwapInterval) {
1005        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
1006    }
1007
1008    return res;
1009}
1010
1011
1012// ----------------------------------------------------------------------------
1013// EGL 1.2
1014// ----------------------------------------------------------------------------
1015
1016EGLBoolean eglWaitClient(void)
1017{
1018    clearError();
1019
1020    egl_connection_t* const cnx = &gEGLImpl;
1021    if (!cnx->dso)
1022        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1023
1024    EGLBoolean res;
1025    if (cnx->egl.eglWaitClient) {
1026        res = cnx->egl.eglWaitClient();
1027    } else {
1028        res = cnx->egl.eglWaitGL();
1029    }
1030    return res;
1031}
1032
1033EGLBoolean eglBindAPI(EGLenum api)
1034{
1035    clearError();
1036
1037    if (egl_init_drivers() == EGL_FALSE) {
1038        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1039    }
1040
1041    // bind this API on all EGLs
1042    EGLBoolean res = EGL_TRUE;
1043    egl_connection_t* const cnx = &gEGLImpl;
1044    if (cnx->dso && cnx->egl.eglBindAPI) {
1045        res = cnx->egl.eglBindAPI(api);
1046    }
1047    return res;
1048}
1049
1050EGLenum eglQueryAPI(void)
1051{
1052    clearError();
1053
1054    if (egl_init_drivers() == EGL_FALSE) {
1055        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1056    }
1057
1058    egl_connection_t* const cnx = &gEGLImpl;
1059    if (cnx->dso && cnx->egl.eglQueryAPI) {
1060        return cnx->egl.eglQueryAPI();
1061    }
1062
1063    // or, it can only be OpenGL ES
1064    return EGL_OPENGL_ES_API;
1065}
1066
1067EGLBoolean eglReleaseThread(void)
1068{
1069    clearError();
1070
1071    // If there is context bound to the thread, release it
1072    egl_display_t::loseCurrent(get_context(getContext()));
1073
1074    egl_connection_t* const cnx = &gEGLImpl;
1075    if (cnx->dso && cnx->egl.eglReleaseThread) {
1076        cnx->egl.eglReleaseThread();
1077    }
1078
1079    egl_tls_t::clearTLS();
1080#if EGL_TRACE
1081    if (gEGLDebugLevel > 0)
1082        GLTrace_eglReleaseThread();
1083#endif
1084    return EGL_TRUE;
1085}
1086
1087EGLSurface eglCreatePbufferFromClientBuffer(
1088          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
1089          EGLConfig config, const EGLint *attrib_list)
1090{
1091    clearError();
1092
1093    egl_connection_t* cnx = NULL;
1094    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
1095    if (!dp) return EGL_FALSE;
1096    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
1097        return cnx->egl.eglCreatePbufferFromClientBuffer(
1098                dp->disp.dpy, buftype, buffer, config, attrib_list);
1099    }
1100    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
1101}
1102
1103// ----------------------------------------------------------------------------
1104// EGL_EGLEXT_VERSION 3
1105// ----------------------------------------------------------------------------
1106
1107EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
1108        const EGLint *attrib_list)
1109{
1110    clearError();
1111
1112    const egl_display_ptr dp = validate_display(dpy);
1113    if (!dp) return EGL_FALSE;
1114
1115    SurfaceRef _s(dp.get(), surface);
1116    if (!_s.get())
1117        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1118
1119    egl_surface_t const * const s = get_surface(surface);
1120    if (s->cnx->egl.eglLockSurfaceKHR) {
1121        return s->cnx->egl.eglLockSurfaceKHR(
1122                dp->disp.dpy, s->surface, attrib_list);
1123    }
1124    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1125}
1126
1127EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
1128{
1129    clearError();
1130
1131    const egl_display_ptr dp = validate_display(dpy);
1132    if (!dp) return EGL_FALSE;
1133
1134    SurfaceRef _s(dp.get(), surface);
1135    if (!_s.get())
1136        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1137
1138    egl_surface_t const * const s = get_surface(surface);
1139    if (s->cnx->egl.eglUnlockSurfaceKHR) {
1140        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
1141    }
1142    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1143}
1144
1145EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1146        EGLClientBuffer buffer, const EGLint *attrib_list)
1147{
1148    clearError();
1149
1150    const egl_display_ptr dp = validate_display(dpy);
1151    if (!dp) return EGL_NO_IMAGE_KHR;
1152
1153    ContextRef _c(dp.get(), ctx);
1154    egl_context_t * const c = _c.get();
1155
1156    EGLImageKHR result = EGL_NO_IMAGE_KHR;
1157    egl_connection_t* const cnx = &gEGLImpl;
1158    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
1159        result = cnx->egl.eglCreateImageKHR(
1160                dp->disp.dpy,
1161                c ? c->context : EGL_NO_CONTEXT,
1162                target, buffer, attrib_list);
1163    }
1164    return result;
1165}
1166
1167EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1168{
1169    clearError();
1170
1171    const egl_display_ptr dp = validate_display(dpy);
1172    if (!dp) return EGL_FALSE;
1173
1174    egl_connection_t* const cnx = &gEGLImpl;
1175    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
1176        cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
1177    }
1178    return EGL_TRUE;
1179}
1180
1181// ----------------------------------------------------------------------------
1182// EGL_EGLEXT_VERSION 5
1183// ----------------------------------------------------------------------------
1184
1185
1186EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1187{
1188    clearError();
1189
1190    const egl_display_ptr dp = validate_display(dpy);
1191    if (!dp) return EGL_NO_SYNC_KHR;
1192
1193    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1194    egl_connection_t* const cnx = &gEGLImpl;
1195    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
1196        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
1197    }
1198    return result;
1199}
1200
1201EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1202{
1203    clearError();
1204
1205    const egl_display_ptr dp = validate_display(dpy);
1206    if (!dp) return EGL_FALSE;
1207
1208    EGLBoolean result = EGL_FALSE;
1209    egl_connection_t* const cnx = &gEGLImpl;
1210    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
1211        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
1212    }
1213    return result;
1214}
1215
1216EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync,
1217        EGLint flags, EGLTimeKHR timeout)
1218{
1219    clearError();
1220
1221    const egl_display_ptr dp = validate_display(dpy);
1222    if (!dp) return EGL_FALSE;
1223
1224    EGLBoolean result = EGL_FALSE;
1225    egl_connection_t* const cnx = &gEGLImpl;
1226    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
1227        result = cnx->egl.eglClientWaitSyncKHR(
1228                dp->disp.dpy, sync, flags, timeout);
1229    }
1230    return result;
1231}
1232
1233EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync,
1234        EGLint attribute, EGLint *value)
1235{
1236    clearError();
1237
1238    const egl_display_ptr dp = validate_display(dpy);
1239    if (!dp) return EGL_FALSE;
1240
1241    EGLBoolean result = EGL_FALSE;
1242    egl_connection_t* const cnx = &gEGLImpl;
1243    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
1244        result = cnx->egl.eglGetSyncAttribKHR(
1245                dp->disp.dpy, sync, attribute, value);
1246    }
1247    return result;
1248}
1249
1250// ----------------------------------------------------------------------------
1251// ANDROID extensions
1252// ----------------------------------------------------------------------------
1253
1254EGLint eglDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSyncKHR sync)
1255{
1256    clearError();
1257
1258    const egl_display_ptr dp = validate_display(dpy);
1259    if (!dp) return EGL_NO_NATIVE_FENCE_FD_ANDROID;
1260
1261    EGLint result = EGL_NO_NATIVE_FENCE_FD_ANDROID;
1262    egl_connection_t* const cnx = &gEGLImpl;
1263    if (cnx->dso && cnx->egl.eglDupNativeFenceFDANDROID) {
1264        result = cnx->egl.eglDupNativeFenceFDANDROID(dp->disp.dpy, sync);
1265    }
1266    return result;
1267}
1268
1269EGLint eglWaitSyncANDROID(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags)
1270{
1271    clearError();
1272
1273    const egl_display_ptr dp = validate_display(dpy);
1274    if (!dp) return EGL_NO_NATIVE_FENCE_FD_ANDROID;
1275
1276    EGLint result = EGL_FALSE;
1277    egl_connection_t* const cnx = &gEGLImpl;
1278    if (cnx->dso && cnx->egl.eglWaitSyncANDROID) {
1279        result = cnx->egl.eglWaitSyncANDROID(dp->disp.dpy, sync, flags);
1280    }
1281    return result;
1282}
1283
1284// ----------------------------------------------------------------------------
1285// NVIDIA extensions
1286// ----------------------------------------------------------------------------
1287EGLuint64NV eglGetSystemTimeFrequencyNV()
1288{
1289    clearError();
1290
1291    if (egl_init_drivers() == EGL_FALSE) {
1292        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1293    }
1294
1295    EGLuint64NV ret = 0;
1296    egl_connection_t* const cnx = &gEGLImpl;
1297
1298    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
1299        return cnx->egl.eglGetSystemTimeFrequencyNV();
1300    }
1301
1302    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1303}
1304
1305EGLuint64NV eglGetSystemTimeNV()
1306{
1307    clearError();
1308
1309    if (egl_init_drivers() == EGL_FALSE) {
1310        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1311    }
1312
1313    EGLuint64NV ret = 0;
1314    egl_connection_t* const cnx = &gEGLImpl;
1315
1316    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
1317        return cnx->egl.eglGetSystemTimeNV();
1318    }
1319
1320    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
1321}
1322