text: /*
  **
  ** 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.
  */
  
  #define LOG_TAG "fillrate"
  
  #include <stdlib.h>
  #include <stdio.h>
  
  #include <EGL/egl.h>
  #include <GLES/gl.h>
  #include <GLES/glext.h>
  
  #include <utils/StopWatch.h>
  #include <WindowSurface.h>
  #include <EGLUtils.h>
  
  using namespace android;
  
  int main(int argc, char** argv)
  {
      EGLint configAttribs[] = {
           EGL_DEPTH_SIZE, 0,
           EGL_NONE
       };
       
       EGLint majorVersion;
       EGLint minorVersion;
       EGLContext context;
       EGLConfig config;
       EGLSurface surface;
       EGLint w, h;
       EGLDisplay dpy;
  
       WindowSurface windowSurface;
       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);
       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);
       
       glBindTexture(GL_TEXTURE_2D, 0);
       glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
       glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
       glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
       glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
       glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
       glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
       glDisable(GL_DITHER);
       glEnable(GL_BLEND);
       glEnable(GL_TEXTURE_2D);
       glColor4f(1,1,1,1);
  
       uint32_t* t32 = (uint32_t*)malloc(512*512*4); 
       for (int y=0 ; y<512 ; y++) {
           for (int x=0 ; x<512 ; x++) {
               int u = x-256;
               int v = y-256;
               if (u*u+v*v < 256*256) {
                   t32[x+y*512] = 0x10FFFFFF;
               } else {
                   t32[x+y*512] = 0x20FF0000;
               }
           }
       }
  
       const GLfloat fh = h;
       const GLfloat fw = w;
       const GLfloat vertices[4][2] = {
               { 0,   0  },
               { 0,   fh },
               { fw,  fh },
               { fw,  0  }
       };
  
       const GLfloat texCoords[4][2] = {
               { 0,  0 },
               { 0,  1 },
               { 1,  1 },
               { 1,  0 }
       };
  
       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 512, 512, 0, GL_RGBA, GL_UNSIGNED_BYTE, t32);
  
       glViewport(0, 0, w, h);
       glMatrixMode(GL_PROJECTION);
       glLoadIdentity();
       glOrthof(0, w, 0, h, 0, 1);
  
       glEnableClientState(GL_VERTEX_ARRAY);
       glEnableClientState(GL_TEXTURE_COORD_ARRAY);
       glVertexPointer(2, GL_FLOAT, 0, vertices);
       glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
  
       eglSwapInterval(dpy, 1);
  
       glClearColor(1,0,0,0);
       glClear(GL_COLOR_BUFFER_BIT);
       glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
       eglSwapBuffers(dpy, surface);
       
  
       nsecs_t times[32];
  
       for (int c=1 ; c<32 ; c++) {
           glClear(GL_COLOR_BUFFER_BIT);
           for (int i=0 ; i<c ; i++) {
               glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
           }
           eglSwapBuffers(dpy, surface);
       }
  
  
       //     for (int c=31 ; c>=1 ; c--) {
       int j=0;
       for (int c=1 ; c<32 ; c++) {
           glClear(GL_COLOR_BUFFER_BIT);
           nsecs_t now = systemTime();
           for (int i=0 ; i<c ; i++) {
               glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
           }
           eglSwapBuffers(dpy, surface);
           nsecs_t t = systemTime() - now;
           times[j++] = t;
       }
  
       for (int c=1, j=0 ; c<32 ; c++, j++) {
           nsecs_t t = times[j];
           printf("%lld\t%d\t%f\n", t, c, (double(t)/c)/1000000.0);
       }
  
  
         
       eglTerminate(dpy);
       
       return 0;
  }
  