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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <stdlib.h>
     18 #include <stdio.h>
     19 #include <time.h>
     20 #include <sched.h>
     21 #include <sys/resource.h>
     22 
     23 #include <EGL/egl.h>
     24 #include <GLES2/gl2.h>
     25 #include <GLES2/gl2ext.h>
     26 
     27 #include <utils/Timers.h>
     28 
     29 #include <ui/FramebufferNativeWindow.h>
     30 #include "EGLUtils.h"
     31 
     32 using namespace android;
     33 
     34 
     35 static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
     36     if (returnVal != EGL_TRUE) {
     37         fprintf(stderr, "%s() returned %d\n", op, returnVal);
     38     }
     39 
     40     for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
     41             = eglGetError()) {
     42         fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, EGLUtils::strerror(error),
     43                 error);
     44     }
     45 }
     46 
     47 static void checkGlError(const char* op) {
     48     for (GLint error = glGetError(); error; error
     49             = glGetError()) {
     50         fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
     51     }
     52 }
     53 
     54 bool doTest(uint32_t w, uint32_t h);
     55 
     56 static EGLDisplay dpy;
     57 static EGLSurface surface;
     58 
     59 int main(int argc, char** argv) {
     60     EGLBoolean returnValue;
     61     EGLConfig myConfig = {0};
     62 
     63     EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
     64     EGLint s_configAttribs[] = {
     65             EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
     66             EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
     67             EGL_NONE };
     68     EGLint majorVersion;
     69     EGLint minorVersion;
     70     EGLContext context;
     71     EGLint w, h;
     72 
     73 
     74     checkEglError("<init>");
     75     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
     76     checkEglError("eglGetDisplay");
     77     if (dpy == EGL_NO_DISPLAY) {
     78         printf("eglGetDisplay returned EGL_NO_DISPLAY.\n");
     79         return 0;
     80     }
     81 
     82     returnValue = eglInitialize(dpy, &majorVersion, &minorVersion);
     83     checkEglError("eglInitialize", returnValue);
     84     if (returnValue != EGL_TRUE) {
     85         printf("eglInitialize failed\n");
     86         return 0;
     87     }
     88 
     89     EGLNativeWindowType window = android_createDisplaySurface();
     90     returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
     91     if (returnValue) {
     92         printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
     93         return 0;
     94     }
     95 
     96     checkEglError("EGLUtils::selectConfigForNativeWindow");
     97 
     98     surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
     99     checkEglError("eglCreateWindowSurface");
    100     if (surface == EGL_NO_SURFACE) {
    101         printf("gelCreateWindowSurface failed.\n");
    102         return 0;
    103     }
    104 
    105     context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
    106     checkEglError("eglCreateContext");
    107     if (context == EGL_NO_CONTEXT) {
    108         printf("eglCreateContext failed\n");
    109         return 0;
    110     }
    111     returnValue = eglMakeCurrent(dpy, surface, surface, context);
    112     checkEglError("eglMakeCurrent", returnValue);
    113     if (returnValue != EGL_TRUE) {
    114         return 0;
    115     }
    116     eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
    117     checkEglError("eglQuerySurface");
    118     eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
    119     checkEglError("eglQuerySurface");
    120     GLint dim = w < h ? w : h;
    121 
    122     glViewport(0, 0, w, h);
    123 
    124     for (;;) {
    125         doTest(w, h);
    126         eglSwapBuffers(dpy, surface);
    127         checkEglError("eglSwapBuffers");
    128     }
    129 
    130     return 0;
    131 }
    132 
    133 void ptSwap() {
    134     eglSwapBuffers(dpy, surface);
    135 }
    136 
    137