app-linux.cpp revision 879ba138fc8cc4a88d355322a67eaa26f1d57682 
1/* San Angeles Observation OpenGL ES version example
2 * Copyright 2004-2005 Jetro Lauha
3 * All rights reserved.
4 * Web: http://iki.fi/jetro/
5 *
6 * This source is free software; you can redistribute it and/or
7 * modify it under the terms of EITHER:
8 *   (1) The GNU Lesser General Public License as published by the Free
9 *       Software Foundation; either version 2.1 of the License, or (at
10 *       your option) any later version. The text of the GNU Lesser
11 *       General Public License is included with this source in the
12 *       file LICENSE-LGPL.txt.
13 *   (2) The BSD-style license that is included with this source in
14 *       the file LICENSE-BSD.txt.
15 *
16 * This source is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
19 * LICENSE-LGPL.txt and LICENSE-BSD.txt for more details.
20 *
21 * $Id: app-linux.c,v 1.4 2005/02/08 18:42:48 tonic Exp $
22 * $Revision: 1.4 $
23 *
24 * Parts of this source file is based on test/example code from
25 * GLESonGL implementation by David Blythe. Here is copy of the
26 * license notice from that source:
27 *
28 * Copyright (C) 2003  David Blythe   All Rights Reserved.
29 *
30 * Permission is hereby granted, free of charge, to any person obtaining a
31 * copy of this software and associated documentation files (the "Software"),
32 * to deal in the Software without restriction, including without limitation
33 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
34 * and/or sell copies of the Software, and to permit persons to whom the
35 * Software is furnished to do so, subject to the following conditions:
36 *
37 * The above copyright notice and this permission notice shall be included
38 * in all copies or substantial portions of the Software.
39 *
40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
41 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
43 * DAVID BLYTHE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
44 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
45 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
46 */
47
48#include <stdlib.h>
49#include <stdio.h>
50#include <sys/time.h>
51
52#include <EGL/egl.h>
53#include <GLES/gl.h>
54
55#include <ui/FramebufferNativeWindow.h>
56#include <ui/EGLUtils.h>
57
58using namespace android;
59
60#include "app.h"
61
62
63int gAppAlive = 1;
64
65static const char sAppName[] =
66    "San Angeles Observation OpenGL ES version example (Linux)";
67
68static int sWindowWidth = WINDOW_DEFAULT_WIDTH;
69static int sWindowHeight = WINDOW_DEFAULT_HEIGHT;
70static EGLDisplay sEglDisplay = EGL_NO_DISPLAY;
71static EGLContext sEglContext = EGL_NO_CONTEXT;
72static EGLSurface sEglSurface = EGL_NO_SURFACE;
73
74const char *egl_strerror(unsigned err)
75{
76    switch(err){
77    case EGL_SUCCESS: return "SUCCESS";
78    case EGL_NOT_INITIALIZED: return "NOT INITIALIZED";
79    case EGL_BAD_ACCESS: return "BAD ACCESS";
80    case EGL_BAD_ALLOC: return "BAD ALLOC";
81    case EGL_BAD_ATTRIBUTE: return "BAD_ATTRIBUTE";
82    case EGL_BAD_CONFIG: return "BAD CONFIG";
83    case EGL_BAD_CONTEXT: return "BAD CONTEXT";
84    case EGL_BAD_CURRENT_SURFACE: return "BAD CURRENT SURFACE";
85    case EGL_BAD_DISPLAY: return "BAD DISPLAY";
86    case EGL_BAD_MATCH: return "BAD MATCH";
87    case EGL_BAD_NATIVE_PIXMAP: return "BAD NATIVE PIXMAP";
88    case EGL_BAD_NATIVE_WINDOW: return "BAD NATIVE WINDOW";
89    case EGL_BAD_PARAMETER: return "BAD PARAMETER";
90    case EGL_BAD_SURFACE: return "BAD_SURFACE";
91//    case EGL_CONTEXT_LOST: return "CONTEXT LOST";
92    default: return "UNKNOWN";
93    }
94}
95
96void egl_error(const char *name)
97{
98    unsigned err = eglGetError();
99    if(err != EGL_SUCCESS) {
100        fprintf(stderr,"%s(): egl error 0x%x (%s)\n",
101                name, err, egl_strerror(err));
102    }
103}
104
105static void checkGLErrors()
106{
107    GLenum error = glGetError();
108    if (error != GL_NO_ERROR)
109        fprintf(stderr, "GL Error: 0x%04x\n", (int)error);
110}
111
112
113static void checkEGLErrors()
114{
115    EGLint error = eglGetError();
116    // GLESonGL seems to be returning 0 when there is no errors?
117    if (error && error != EGL_SUCCESS)
118        fprintf(stderr, "EGL Error: 0x%04x\n", (int)error);
119}
120
121static int initGraphics()
122{
123    EGLint configAttribs[] = {
124         EGL_DEPTH_SIZE, 16,
125         EGL_NONE
126     };
127
128     EGLint majorVersion;
129     EGLint minorVersion;
130     EGLContext context;
131     EGLConfig config;
132     EGLSurface surface;
133     EGLint w, h;
134     EGLDisplay dpy;
135
136     EGLNativeWindowType window = android_createDisplaySurface();
137
138     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
139     eglInitialize(dpy, &majorVersion, &minorVersion);
140
141     status_t err = EGLUtils::selectConfigForNativeWindow(
142             dpy, configAttribs, window, &config);
143     if (err) {
144         fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
145         return 0;
146     }
147
148     surface = eglCreateWindowSurface(dpy, config, window, NULL);
149     egl_error("eglCreateWindowSurface");
150
151     fprintf(stderr,"surface = %p\n", surface);
152
153     context = eglCreateContext(dpy, config, NULL, NULL);
154     egl_error("eglCreateContext");
155     fprintf(stderr,"context = %p\n", context);
156
157     eglMakeCurrent(dpy, surface, surface, context);
158     egl_error("eglMakeCurrent");
159
160     eglQuerySurface(dpy, surface, EGL_WIDTH, &sWindowWidth);
161     eglQuerySurface(dpy, surface, EGL_HEIGHT, &sWindowHeight);
162
163    sEglDisplay = dpy;
164    sEglSurface = surface;
165    sEglContext = context;
166
167    return EGL_TRUE;
168}
169
170
171static void deinitGraphics()
172{
173    eglMakeCurrent(sEglDisplay, NULL, NULL, NULL);
174    eglDestroyContext(sEglDisplay, sEglContext);
175    eglDestroySurface(sEglDisplay, sEglSurface);
176    eglTerminate(sEglDisplay);
177}
178
179
180int main(int argc, char *argv[])
181{
182    // not referenced:
183    argc = argc;
184    argv = argv;
185
186    if (!initGraphics())
187    {
188        fprintf(stderr, "Graphics initialization failed.\n");
189        return EXIT_FAILURE;
190    }
191
192    appInit();
193
194    struct timeval timeTemp;
195    int frameCount = 0;
196    gettimeofday(&timeTemp, NULL);
197    double totalTime = timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec;
198
199    while (gAppAlive)
200    {
201        struct timeval timeNow;
202
203        gettimeofday(&timeNow, NULL);
204        appRender(timeNow.tv_sec * 1000 + timeNow.tv_usec / 1000,
205                sWindowWidth, sWindowHeight);
206        checkGLErrors();
207        eglSwapBuffers(sEglDisplay, sEglSurface);
208        checkEGLErrors();
209        frameCount++;
210    }
211
212    gettimeofday(&timeTemp, NULL);
213
214    appDeinit();
215    deinitGraphics();
216
217    totalTime = (timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec) - totalTime;
218    printf("totalTime=%f s, frameCount=%d, %.2f fps\n",
219            totalTime, frameCount, frameCount/totalTime);
220
221    return EXIT_SUCCESS;
222}
223