Function verify

test/browser/gl_matrix_identity.c:40–51

#include <assert.h>

void verify() {
  int width = 640, height = 480;
  unsigned char *data = (unsigned char*)malloc(width*height*4);
  glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
  int sum = 0;
  for (int x = 0; x < width*height*4; x++) {
    if (x % 4 != 3) sum += x * data[x];
  }
#ifdef __EMSCRIPTEN__
  REPORT_RESULT(sum);
#endif
}

int main(int argc, char *argv[]) {
    SDL_Surface *screen;