230 lines
7.1 KiB
C++
230 lines
7.1 KiB
C++
/* San Angeles Observation OpenGL ES version example
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* Copyright 2004-2005 Jetro Lauha
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* All rights reserved.
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* Web: http://iki.fi/jetro/
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*
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* This source is free software; you can redistribute it and/or
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* modify it under the terms of EITHER:
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* (1) The GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 2.1 of the License, or (at
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* your option) any later version. The text of the GNU Lesser
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* General Public License is included with this source in the
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* file LICENSE-LGPL.txt.
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* (2) The BSD-style license that is included with this source in
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* the file LICENSE-BSD.txt.
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*
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* This source is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
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* LICENSE-LGPL.txt and LICENSE-BSD.txt for more details.
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*
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* $Id: app-linux.c,v 1.4 2005/02/08 18:42:48 tonic Exp $
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* $Revision: 1.4 $
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*
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* Parts of this source file is based on test/example code from
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* GLESonGL implementation by David Blythe. Here is copy of the
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* license notice from that source:
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*
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* Copyright (C) 2003 David Blythe All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* DAVID BLYTHE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <EGL/egl.h>
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#include <GLES/gl.h>
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#include <EGLUtils.h>
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#include <WindowSurface.h>
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using namespace android;
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#include "app.h"
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int gAppAlive = 1;
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static int sWindowWidth = WINDOW_DEFAULT_WIDTH;
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static int sWindowHeight = WINDOW_DEFAULT_HEIGHT;
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static EGLDisplay sEglDisplay = EGL_NO_DISPLAY;
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static EGLContext sEglContext = EGL_NO_CONTEXT;
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static EGLSurface sEglSurface = EGL_NO_SURFACE;
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const char *egl_strerror(unsigned err)
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{
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switch(err){
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case EGL_SUCCESS: return "SUCCESS";
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case EGL_NOT_INITIALIZED: return "NOT INITIALIZED";
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case EGL_BAD_ACCESS: return "BAD ACCESS";
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case EGL_BAD_ALLOC: return "BAD ALLOC";
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case EGL_BAD_ATTRIBUTE: return "BAD_ATTRIBUTE";
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case EGL_BAD_CONFIG: return "BAD CONFIG";
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case EGL_BAD_CONTEXT: return "BAD CONTEXT";
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case EGL_BAD_CURRENT_SURFACE: return "BAD CURRENT SURFACE";
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case EGL_BAD_DISPLAY: return "BAD DISPLAY";
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case EGL_BAD_MATCH: return "BAD MATCH";
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case EGL_BAD_NATIVE_PIXMAP: return "BAD NATIVE PIXMAP";
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case EGL_BAD_NATIVE_WINDOW: return "BAD NATIVE WINDOW";
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case EGL_BAD_PARAMETER: return "BAD PARAMETER";
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case EGL_BAD_SURFACE: return "BAD_SURFACE";
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// case EGL_CONTEXT_LOST: return "CONTEXT LOST";
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default: return "UNKNOWN";
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}
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}
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void egl_error(const char *name)
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{
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unsigned err = eglGetError();
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if(err != EGL_SUCCESS) {
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fprintf(stderr,"%s(): egl error 0x%x (%s)\n",
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name, err, egl_strerror(err));
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}
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}
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static void checkGLErrors()
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{
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GLenum error = glGetError();
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if (error != GL_NO_ERROR)
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fprintf(stderr, "GL Error: 0x%04x\n", (int)error);
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}
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static void checkEGLErrors()
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{
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EGLint error = eglGetError();
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// GLESonGL seems to be returning 0 when there is no errors?
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if (error && error != EGL_SUCCESS)
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fprintf(stderr, "EGL Error: 0x%04x\n", (int)error);
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}
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static int initGraphics(EGLint samples, const WindowSurface& windowSurface)
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{
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EGLint configAttribs[] = {
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EGL_DEPTH_SIZE, 16,
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EGL_SAMPLE_BUFFERS, samples ? 1 : 0,
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EGL_SAMPLES, samples,
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EGL_NONE
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};
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EGLint majorVersion;
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EGLint minorVersion;
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EGLContext context;
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EGLConfig config;
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EGLSurface surface;
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EGLDisplay dpy;
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EGLNativeWindowType window = windowSurface.getSurface();
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dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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eglInitialize(dpy, &majorVersion, &minorVersion);
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status_t err = EGLUtils::selectConfigForNativeWindow(
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dpy, configAttribs, window, &config);
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if (err) {
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fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
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return 0;
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}
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surface = eglCreateWindowSurface(dpy, config, window, NULL);
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egl_error("eglCreateWindowSurface");
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fprintf(stderr,"surface = %p\n", surface);
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context = eglCreateContext(dpy, config, NULL, NULL);
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egl_error("eglCreateContext");
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fprintf(stderr,"context = %p\n", context);
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eglMakeCurrent(dpy, surface, surface, context);
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egl_error("eglMakeCurrent");
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eglQuerySurface(dpy, surface, EGL_WIDTH, &sWindowWidth);
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eglQuerySurface(dpy, surface, EGL_HEIGHT, &sWindowHeight);
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sEglDisplay = dpy;
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sEglSurface = surface;
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sEglContext = context;
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if (samples == 0) {
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// GL_MULTISAMPLE is enabled by default
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glDisable(GL_MULTISAMPLE);
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}
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return EGL_TRUE;
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}
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static void deinitGraphics()
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{
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eglMakeCurrent(sEglDisplay, NULL, NULL, NULL);
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eglDestroyContext(sEglDisplay, sEglContext);
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eglDestroySurface(sEglDisplay, sEglSurface);
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eglTerminate(sEglDisplay);
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}
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int main(int argc, char *argv[])
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{
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unsigned samples = 0;
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printf("usage: %s [samples]\n", argv[0]);
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if (argc == 2) {
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samples = atoi( argv[1] );
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printf("Multisample enabled: GL_SAMPLES = %u\n", samples);
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}
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WindowSurface windowSurface;
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if (!initGraphics(samples, windowSurface))
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{
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fprintf(stderr, "Graphics initialization failed.\n");
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return EXIT_FAILURE;
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}
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appInit();
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struct timeval timeTemp;
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int frameCount = 0;
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gettimeofday(&timeTemp, NULL);
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double totalTime = timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec;
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while (gAppAlive)
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{
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struct timeval timeNow;
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gettimeofday(&timeNow, NULL);
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appRender(timeNow.tv_sec * 1000 + timeNow.tv_usec / 1000,
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sWindowWidth, sWindowHeight);
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checkGLErrors();
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eglSwapBuffers(sEglDisplay, sEglSurface);
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checkEGLErrors();
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frameCount++;
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}
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gettimeofday(&timeTemp, NULL);
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appDeinit();
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deinitGraphics();
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totalTime = (timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec) - totalTime;
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printf("totalTime=%f s, frameCount=%d, %.2f fps\n",
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totalTime, frameCount, frameCount/totalTime);
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return EXIT_SUCCESS;
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}
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