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/*
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <EGL/egl.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <utils/StopWatch.h>
#include <ui/FramebufferNativeWindow.h>
#include <ui/EGLUtils.h>
using namespace android;
int main(int argc, char** argv)
{
EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_NONE
};
EGLint majorVersion;
EGLint minorVersion;
EGLContext context;
EGLConfig config;
EGLint numConfigs=0;
EGLSurface surface;
EGLint w, h;
EGLDisplay dpy;
EGLNativeWindowType window = android_createDisplaySurface();
dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(dpy, 0 ,0) ;//&majorVersion, &minorVersion);
eglGetConfigs(dpy, NULL, 0, &numConfigs);
printf("# configs = %d\n", numConfigs);
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;
}
EGLint r,g,b,a;
eglGetConfigAttrib(dpy, config, EGL_RED_SIZE, &r);
eglGetConfigAttrib(dpy, config, EGL_GREEN_SIZE, &g);
eglGetConfigAttrib(dpy, config, EGL_BLUE_SIZE, &b);
eglGetConfigAttrib(dpy, config, EGL_ALPHA_SIZE, &a);
surface = eglCreateWindowSurface(dpy, config, window, NULL);
if (surface == EGL_NO_SURFACE) {
EGLint err = eglGetError();
fprintf(stderr, "%s, config=%p, format = %d-%d-%d-%d\n",
EGLUtils::strerror(err), config, r,g,b,a);
return 0;
} else {
printf("config=%p, format = %d-%d-%d-%d\n", config, r,g,b,a);
}
context = eglCreateContext(dpy, config, NULL, NULL);
eglMakeCurrent(dpy, surface, surface, context);
eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
printf("w=%d, h=%d\n", w, h);
glDisable(GL_DITHER);
glEnable(GL_BLEND);
glViewport(0, 0, w, h);
glOrthof(0, w, 0, h, 0, 1);
eglSwapInterval(dpy, 1);
glClearColor(1,0,0,0);
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(dpy, surface);
int time = 10;
printf("screen should flash red/green quickly for %d s...\n", time);
int c = 0;
nsecs_t start = systemTime();
nsecs_t t;
do {
glClearColor(1,0,0,0);
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(dpy, surface);
glClearColor(0,1,0,0);
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(dpy, surface);
t = systemTime() - start;
c += 2;
} while (int(ns2s(t))<=time);
double p = (double(t) / c) / 1000000000.0;
printf("refresh-rate is %f fps (%f ms)\n", 1.0f/p, p*1000.0);
eglTerminate(dpy);
return 0;
}
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