egl_object.cpp revision 7c3ba8aa288755fad78ddbabcee0ad5a0610ac1c 
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
74egl_surface_t::~egl_surface_t() {
75    ANativeWindow* const window = win.get();
76    if (window != NULL) {
77        disconnect();
78    }
79}
80
81void egl_surface_t::disconnect() {
82    ANativeWindow* const window = win.get();
83    if (window != NULL && connected) {
84        native_window_set_buffers_format(window, 0);
85        if (native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL)) {
86            ALOGW("EGLNativeWindowType %p disconnect failed", window);
87        }
88        connected = false;
89    }
90}
91
92void egl_surface_t::terminate() {
93    disconnect();
94    egl_object_t::terminate();
95}
96
97// ----------------------------------------------------------------------------
98
99egl_context_t::egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
100        egl_connection_t const* cnx, int version) :
101    egl_object_t(get_display_nowake(dpy)), dpy(dpy), context(context),
102            config(config), read(0), draw(0), cnx(cnx), version(version) {
103}
104
105void egl_context_t::onLooseCurrent() {
106    read = NULL;
107    draw = NULL;
108}
109
110void egl_context_t::onMakeCurrent(EGLSurface draw, EGLSurface read) {
111    this->read = read;
112    this->draw = draw;
113
114    /*
115     * Here we cache the GL_EXTENSIONS string for this context and we
116     * add the extensions always handled by the wrapper
117     */
118
119    if (gl_extensions.isEmpty()) {
120        // call the implementation's glGetString(GL_EXTENSIONS)
121        const char* exts = (const char *)gEGLImpl.hooks[version]->gl.glGetString(GL_EXTENSIONS);
122        gl_extensions.setTo(exts);
123        if (gl_extensions.find("GL_EXT_debug_marker") < 0) {
124            String8 temp("GL_EXT_debug_marker ");
125            temp.append(gl_extensions);
126            gl_extensions.setTo(temp);
127        }
128
129        // tokenize the supported extensions for the glGetStringi() wrapper
130        std::stringstream ss;
131        std::string str;
132        ss << gl_extensions.string();
133        while (ss >> str) {
134            tokenized_gl_extensions.push(String8(str.c_str()));
135        }
136    }
137}
138
139// ----------------------------------------------------------------------------
140}; // namespace android
141// ----------------------------------------------------------------------------
142