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