1/*
2 **
3 ** Copyright 2006, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 **     http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18#include <stdlib.h>
19#include <stdio.h>
20
21#include <EGL/egl.h>
22#include <GLES/gl.h>
23#include <GLES/glext.h>
24
25#include <utils/StopWatch.h>
26#include <WindowSurface.h>
27#include <EGLUtils.h>
28
29using namespace android;
30
31int main(int argc, char** argv)
32{
33    EGLint configAttribs[] = {
34            EGL_SURFACE_TYPE,   EGL_WINDOW_BIT,
35            EGL_NONE
36    };
37
38    EGLint majorVersion;
39    EGLint minorVersion;
40    EGLContext context;
41    EGLConfig config;
42    EGLint numConfigs=0;
43    EGLSurface surface;
44    EGLint w, h;
45    EGLDisplay dpy;
46
47
48    WindowSurface windowSurface;
49    EGLNativeWindowType window = windowSurface.getSurface();
50
51    dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
52    eglInitialize(dpy, &majorVersion, &minorVersion);
53    eglGetConfigs(dpy, NULL, 0, &numConfigs);
54    printf("# configs = %d\n", numConfigs);
55
56    status_t err = EGLUtils::selectConfigForNativeWindow(
57            dpy, configAttribs, window, &config);
58    if (err) {
59        fprintf(stderr, "error: %s", EGLUtils::strerror(eglGetError()));
60        eglTerminate(dpy);
61        return 0;
62    }
63
64    EGLint r,g,b,a, vid;
65    eglGetConfigAttrib(dpy, config, EGL_RED_SIZE,   &r);
66    eglGetConfigAttrib(dpy, config, EGL_GREEN_SIZE, &g);
67    eglGetConfigAttrib(dpy, config, EGL_BLUE_SIZE,  &b);
68    eglGetConfigAttrib(dpy, config, EGL_ALPHA_SIZE, &a);
69    eglGetConfigAttrib(dpy, config, EGL_NATIVE_VISUAL_ID, &vid);
70
71    surface = eglCreateWindowSurface(dpy, config, window, NULL);
72    if (surface == EGL_NO_SURFACE) {
73        EGLint err = eglGetError();
74        fprintf(stderr, "error: %s, config=%p, format = %d-%d-%d-%d, visual-id = %d\n",
75                EGLUtils::strerror(err), config, r,g,b,a, vid);
76        eglTerminate(dpy);
77        return 0;
78    } else {
79        printf("config=%p, format = %d-%d-%d-%d, visual-id = %d\n",
80                config, r,g,b,a, vid);
81    }
82
83    context = eglCreateContext(dpy, config, NULL, NULL);
84    eglMakeCurrent(dpy, surface, surface, context);
85    eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
86    eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
87
88    printf("w=%d, h=%d\n", w, h);
89
90    glDisable(GL_DITHER);
91    glEnable(GL_BLEND);
92
93    glViewport(0, 0, w, h);
94    glOrthof(0, w, 0, h, 0, 1);
95
96    eglSwapInterval(dpy, 1);
97
98    glClearColor(1,0,0,0);
99    glClear(GL_COLOR_BUFFER_BIT);
100    eglSwapBuffers(dpy, surface);
101
102
103    int time = 10;
104    printf("screen should flash red/green quickly for %d s...\n", time);
105
106    int c = 0;
107    nsecs_t start = systemTime();
108    nsecs_t t;
109    do {
110        glClearColor(1,0,0,0);
111        glClear(GL_COLOR_BUFFER_BIT);
112        eglSwapBuffers(dpy, surface);
113        glClearColor(0,1,0,0);
114        glClear(GL_COLOR_BUFFER_BIT);
115        eglSwapBuffers(dpy, surface);
116        t = systemTime() - start;
117        c += 2;
118    } while (int(ns2s(t))<=time);
119
120    double p =  (double(t) / c) / 1000000000.0;
121    printf("refresh-rate is %f fps (%f ms)\n", 1.0f/p, p*1000.0);
122
123    eglTerminate(dpy);
124
125    return 0;
126}
127