egl_object.cpp revision 4774338bd0ad1ebe42c311fd0c72f13786b5c800 
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// ----------------------------------------------------------------------------
29namespace android {
30// ----------------------------------------------------------------------------
31
32egl_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
38egl_object_t::~egl_object_t() {
39}
40
41void 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
50void egl_object_t::destroy() {
51    if (decRef() == 1) {
52        delete this;
53    }
54}
55
56bool 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
64egl_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
74egl_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
87egl_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
93void egl_context_t::onLooseCurrent() {
94    read = NULL;
95    draw = NULL;
96}
97
98void 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