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 <EGLUtils.h>
56 #include <WindowSurface.h>
57
58 using namespace android;
59
60 #include "app.h"
61
62
63 int gAppAlive = 1;
64
65 static int sWindowWidth = WINDOW_DEFAULT_WIDTH;
66 static int sWindowHeight = WINDOW_DEFAULT_HEIGHT;
67 static EGLDisplay sEglDisplay = EGL_NO_DISPLAY;
68 static EGLContext sEglContext = EGL_NO_CONTEXT;
69 static EGLSurface sEglSurface = EGL_NO_SURFACE;
70
egl_strerror(unsigned err)71 const char *egl_strerror(unsigned err)
72 {
73 switch(err){
74 case EGL_SUCCESS: return "SUCCESS";
75 case EGL_NOT_INITIALIZED: return "NOT INITIALIZED";
76 case EGL_BAD_ACCESS: return "BAD ACCESS";
77 case EGL_BAD_ALLOC: return "BAD ALLOC";
78 case EGL_BAD_ATTRIBUTE: return "BAD_ATTRIBUTE";
79 case EGL_BAD_CONFIG: return "BAD CONFIG";
80 case EGL_BAD_CONTEXT: return "BAD CONTEXT";
81 case EGL_BAD_CURRENT_SURFACE: return "BAD CURRENT SURFACE";
82 case EGL_BAD_DISPLAY: return "BAD DISPLAY";
83 case EGL_BAD_MATCH: return "BAD MATCH";
84 case EGL_BAD_NATIVE_PIXMAP: return "BAD NATIVE PIXMAP";
85 case EGL_BAD_NATIVE_WINDOW: return "BAD NATIVE WINDOW";
86 case EGL_BAD_PARAMETER: return "BAD PARAMETER";
87 case EGL_BAD_SURFACE: return "BAD_SURFACE";
88 // case EGL_CONTEXT_LOST: return "CONTEXT LOST";
89 default: return "UNKNOWN";
90 }
91 }
92
egl_error(const char * name)93 void egl_error(const char *name)
94 {
95 unsigned err = eglGetError();
96 if(err != EGL_SUCCESS) {
97 fprintf(stderr,"%s(): egl error 0x%x (%s)\n",
98 name, err, egl_strerror(err));
99 }
100 }
101
checkGLErrors()102 static void checkGLErrors()
103 {
104 GLenum error = glGetError();
105 if (error != GL_NO_ERROR)
106 fprintf(stderr, "GL Error: 0x%04x\n", (int)error);
107 }
108
109
checkEGLErrors()110 static void checkEGLErrors()
111 {
112 EGLint error = eglGetError();
113 // GLESonGL seems to be returning 0 when there is no errors?
114 if (error && error != EGL_SUCCESS)
115 fprintf(stderr, "EGL Error: 0x%04x\n", (int)error);
116 }
117
initGraphics(EGLint samples,const WindowSurface & windowSurface)118 static int initGraphics(EGLint samples, const WindowSurface& windowSurface)
119 {
120 EGLint configAttribs[] = {
121 EGL_DEPTH_SIZE, 16,
122 EGL_SAMPLE_BUFFERS, samples ? 1 : 0,
123 EGL_SAMPLES, samples,
124 EGL_NONE
125 };
126
127 EGLint majorVersion;
128 EGLint minorVersion;
129 EGLContext context;
130 EGLConfig config;
131 EGLSurface surface;
132 EGLDisplay dpy;
133
134 EGLNativeWindowType window = windowSurface.getSurface();
135
136 dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
137 eglInitialize(dpy, &majorVersion, &minorVersion);
138
139 status_t err = EGLUtils::selectConfigForNativeWindow(
140 dpy, configAttribs, window, &config);
141 if (err) {
142 fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
143 return 0;
144 }
145
146 surface = eglCreateWindowSurface(dpy, config, window, NULL);
147 egl_error("eglCreateWindowSurface");
148
149 fprintf(stderr,"surface = %p\n", surface);
150
151 context = eglCreateContext(dpy, config, NULL, NULL);
152 egl_error("eglCreateContext");
153 fprintf(stderr,"context = %p\n", context);
154
155 eglMakeCurrent(dpy, surface, surface, context);
156 egl_error("eglMakeCurrent");
157
158 eglQuerySurface(dpy, surface, EGL_WIDTH, &sWindowWidth);
159 eglQuerySurface(dpy, surface, EGL_HEIGHT, &sWindowHeight);
160
161 sEglDisplay = dpy;
162 sEglSurface = surface;
163 sEglContext = context;
164
165 if (samples == 0) {
166 // GL_MULTISAMPLE is enabled by default
167 glDisable(GL_MULTISAMPLE);
168 }
169
170 return EGL_TRUE;
171 }
172
173
deinitGraphics()174 static void deinitGraphics()
175 {
176 eglMakeCurrent(sEglDisplay, NULL, NULL, NULL);
177 eglDestroyContext(sEglDisplay, sEglContext);
178 eglDestroySurface(sEglDisplay, sEglSurface);
179 eglTerminate(sEglDisplay);
180 }
181
182
main(int argc,char * argv[])183 int main(int argc, char *argv[])
184 {
185 unsigned samples = 0;
186 printf("usage: %s [samples]\n", argv[0]);
187 if (argc == 2) {
188 samples = atoi( argv[1] );
189 printf("Multisample enabled: GL_SAMPLES = %u\n", samples);
190 }
191
192 WindowSurface windowSurface;
193 if (!initGraphics(samples, windowSurface))
194 {
195 fprintf(stderr, "Graphics initialization failed.\n");
196 return EXIT_FAILURE;
197 }
198
199 appInit();
200
201 struct timeval timeTemp;
202 int frameCount = 0;
203 gettimeofday(&timeTemp, NULL);
204 double totalTime = timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec;
205
206 while (gAppAlive)
207 {
208 struct timeval timeNow;
209
210 gettimeofday(&timeNow, NULL);
211 appRender(timeNow.tv_sec * 1000 + timeNow.tv_usec / 1000,
212 sWindowWidth, sWindowHeight);
213 checkGLErrors();
214 eglSwapBuffers(sEglDisplay, sEglSurface);
215 checkEGLErrors();
216 frameCount++;
217 }
218
219 gettimeofday(&timeTemp, NULL);
220
221 appDeinit();
222 deinitGraphics();
223
224 totalTime = (timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec) - totalTime;
225 printf("totalTime=%f s, frameCount=%d, %.2f fps\n",
226 totalTime, frameCount, frameCount/totalTime);
227
228 return EXIT_SUCCESS;
229 }
230