egl_object.cpp revision ae8cf0bb295d3f74e103dee9136a49f38447e9b8 
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 <string>
18#include <sstream>
19
20#include <ctype.h>
21#include <stdint.h>
22#include <stdlib.h>
23
24#include <EGL/egl.h>
25#include <EGL/eglext.h>
26
27#include <utils/threads.h>
28
29#include "egl_object.h"
30
31// ----------------------------------------------------------------------------
32namespace android {
33// ----------------------------------------------------------------------------
34
35egl_object_t::egl_object_t(egl_display_t* disp) :
36    display(disp), count(1) {
37    // NOTE: this does an implicit incRef
38    display->addObject(this);
39}
40
41egl_object_t::~egl_object_t() {
42}
43
44void egl_object_t::terminate() {
45    // this marks the object as "terminated"
46    display->removeObject(this);
47    if (decRef() == 1) {
48        // shouldn't happen because this is called from LocalRef
49        ALOGE("egl_object_t::terminate() removed the last reference!");
50    }
51}
52
53void egl_object_t::destroy() {
54    if (decRef() == 1) {
55        delete this;
56    }
57}
58
59bool egl_object_t::get(egl_display_t const* display, egl_object_t* object) {
60    // used by LocalRef, this does an incRef() atomically with
61    // checking that the object is valid.
62    return display->getObject(object);
63}
64
65// ----------------------------------------------------------------------------
66
67egl_surface_t::egl_surface_t(egl_display_t* dpy, EGLConfig config,
68        EGLNativeWindowType win, EGLSurface surface,
69        egl_connection_t const* cnx) :
70    egl_object_t(dpy), surface(surface), config(config), win(win), cnx(cnx),
71    connected(true)
72{
73    if (win) {
74        getDisplay()->onWindowSurfaceCreated();
75    }
76}
77
78egl_surface_t::~egl_surface_t() {
79    ANativeWindow* const window = win.get();
80    if (window != NULL) {
81        disconnect();
82        getDisplay()->onWindowSurfaceDestroyed();
83    }
84}
85
86void egl_surface_t::disconnect() {
87    ANativeWindow* const window = win.get();
88    if (window != NULL && connected) {
89        native_window_set_buffers_format(window, 0);
90        if (native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL)) {
91            ALOGW("EGLNativeWindowType %p disconnect failed", window);
92        }
93        connected = false;
94    }
95}
96
97void egl_surface_t::terminate() {
98    disconnect();
99    egl_object_t::terminate();
100}
101
102// ----------------------------------------------------------------------------
103
104egl_context_t::egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
105        egl_connection_t const* cnx, int version) :
106    egl_object_t(get_display_nowake(dpy)), dpy(dpy), context(context),
107            config(config), read(0), draw(0), cnx(cnx), version(version) {
108}
109
110void egl_context_t::onLooseCurrent() {
111    read = NULL;
112    draw = NULL;
113}
114
115void egl_context_t::onMakeCurrent(EGLSurface draw, EGLSurface read) {
116    this->read = read;
117    this->draw = draw;
118
119    /*
120     * Here we cache the GL_EXTENSIONS string for this context and we
121     * add the extensions always handled by the wrapper
122     */
123
124    if (gl_extensions.isEmpty()) {
125        // call the implementation's glGetString(GL_EXTENSIONS)
126        const char* exts = (const char *)gEGLImpl.hooks[version]->gl.glGetString(GL_EXTENSIONS);
127        gl_extensions.setTo(exts);
128        if (gl_extensions.find("GL_EXT_debug_marker") < 0) {
129            String8 temp("GL_EXT_debug_marker ");
130            temp.append(gl_extensions);
131            gl_extensions.setTo(temp);
132        }
133
134        // tokenize the supported extensions for the glGetStringi() wrapper
135        std::stringstream ss;
136        std::string str;
137        ss << gl_extensions.string();
138        while (ss >> str) {
139            tokenized_gl_extensions.push(String8(str.c_str()));
140        }
141    }
142}
143
144// ----------------------------------------------------------------------------
145}; // namespace android
146// ----------------------------------------------------------------------------
147