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      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 #include <ctype.h>
     18 #include <stdint.h>
     19 #include <stdlib.h>
     20 
     21 #include <EGL/egl.h>
     22 #include <EGL/eglext.h>
     23 
     24 #include <utils/threads.h>
     25 
     26 #include "egl_object.h"
     27 
     28 // ----------------------------------------------------------------------------
     29 namespace android {
     30 // ----------------------------------------------------------------------------
     31 
     32 egl_object_t::egl_object_t(egl_display_t* disp) :
     33     display(disp), count(1) {
     34     // NOTE: this does an implicit incRef
     35     display->addObject(this);
     36 }
     37 
     38 egl_object_t::~egl_object_t() {
     39 }
     40 
     41 void egl_object_t::terminate() {
     42     // this marks the object as "terminated"
     43     display->removeObject(this);
     44     if (decRef() == 1) {
     45         // shouldn't happen because this is called from LocalRef
     46         ALOGE("egl_object_t::terminate() removed the last reference!");
     47     }
     48 }
     49 
     50 void egl_object_t::destroy() {
     51     if (decRef() == 1) {
     52         delete this;
     53     }
     54 }
     55 
     56 bool egl_object_t::get(egl_display_t const* display, egl_object_t* object) {
     57     // used by LocalRef, this does an incRef() atomically with
     58     // checking that the object is valid.
     59     return display->getObject(object);
     60 }
     61 
     62 // ----------------------------------------------------------------------------
     63 
     64 egl_surface_t::egl_surface_t(egl_display_t* dpy, EGLConfig config,
     65         EGLNativeWindowType win, EGLSurface surface,
     66         egl_connection_t const* cnx) :
     67     egl_object_t(dpy), surface(surface), config(config), win(win), cnx(cnx)
     68 {
     69     if (win) {
     70         getDisplay()->onWindowSurfaceCreated();
     71     }
     72 }
     73 
     74 egl_surface_t::~egl_surface_t() {
     75     ANativeWindow* const window = win.get();
     76     if (window != NULL) {
     77         native_window_set_buffers_format(window, 0);
     78         if (native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL)) {
     79             ALOGW("EGLNativeWindowType %p disconnect failed", window);
     80         }
     81         getDisplay()->onWindowSurfaceDestroyed();
     82     }
     83 }
     84 
     85 // ----------------------------------------------------------------------------
     86 
     87 egl_context_t::egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
     88         egl_connection_t const* cnx, int version) :
     89     egl_object_t(get_display_nowake(dpy)), dpy(dpy), context(context),
     90             config(config), read(0), draw(0), cnx(cnx), version(version) {
     91 }
     92 
     93 void egl_context_t::onLooseCurrent() {
     94     read = NULL;
     95     draw = NULL;
     96 }
     97 
     98 void egl_context_t::onMakeCurrent(EGLSurface draw, EGLSurface read) {
     99     this->read = read;
    100     this->draw = draw;
    101 
    102     /*
    103      * Here we cache the GL_EXTENSIONS string for this context and we
    104      * add the extensions always handled by the wrapper
    105      */
    106 
    107     if (gl_extensions.isEmpty()) {
    108         // call the implementation's glGetString(GL_EXTENSIONS)
    109         const char* exts = (const char *)gEGLImpl.hooks[version]->gl.glGetString(GL_EXTENSIONS);
    110         gl_extensions.setTo(exts);
    111         if (gl_extensions.find("GL_EXT_debug_marker") < 0) {
    112             String8 temp("GL_EXT_debug_marker ");
    113             temp.append(gl_extensions);
    114             gl_extensions.setTo(temp);
    115         }
    116     }
    117 }
    118 
    119 // ----------------------------------------------------------------------------
    120 }; // namespace android
    121 // ----------------------------------------------------------------------------
    122