16-bit video upload to float: intermediate R16_EXT and copy to float.

content/test/data/media/depth_stream_test_utilities.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 function getConstraintsForDevice(deviceLabel) {
   return new Promise(function(resolve, reject) {
     navigator.mediaDevices.enumerateDevices()
     .then(function(devices) {
       for (var i = 0; i < devices.length; ++i) {
         if (deviceLabel == devices[i].label) {
@@ skipping 36 matching lines @@
 // (top_left_value + (row + column) * step) % wrap_around. wrap_around is 255
 // (for Uint8) or 1.0 for float. See FakeVideoCaptureDevice for details.
 function verifyPixels(
     data, width, height, flip_y, step, wrap_around, tolerance, test_name) {
   var rowsColumnsToCheck = [[1, 1],
                             [0, width - 1],
                             [height - 1, 0],
                             [height - 1, width - 1],
                             [height - 3, width - 3]];
 
-  // Same value is expected for all color components.
-  if (data[0] != data[1] || data[0] != data[2]) {
-    return Promise.reject(test_name + ": values " + data[0] + ", " + data[1] +
-                          ", " + data[2] + " differ at top left.");
-  }
-
   // Calculate all reference points based on top left and compare.
   for (var j = 0; j < rowsColumnsToCheck.length; ++j) {
     var row = rowsColumnsToCheck[j][0];
     var column = rowsColumnsToCheck[j][1];
     var i = (width * row + column) * 4;
-    if (data[i] != data[i + 1] || data[i] != data[i + 2]) {
-      return Promise.reject(test_name + ": values " + data[i] + ", " +
-                            data[i + 1] + ", " + data[i + 2] +
-                            " differ at index " + i);
-    }
     var calculated = (data[0] + wrap_around +
                       step * ((flip_y ? -row : row) + column)) % wrap_around;
     if (Math.abs(calculated - data[i]) > tolerance) {
       return Promise.reject(test_name + ": reference value " + data[i] +
           " differs from calculated: " + calculated +
           " at index (row, column) " + i + " (" + row + ", " + column +
           "). TopLeft value:" + data[0] + ", step:" + step + ", flip_y:" +
           flip_y);
     }
   }
   return true;
 }
-
-// Although RED texture is bound to framebuffer, we read RGBA pixels to |data|.
-// Value at point (row, column) is calculated as
-// (top_left_value + (row + column) * step) % wrap_around. wrap_around is 255
-// (for Uint8) or 1.0 for float. See FakeVideoCaptureDevice for details.
-function verifyPixelsRed(
-    data, width, height, flip_y, step, wrap_around, tolerance, test_name) {
-  var rowsColumnsToCheck = [[1, 1],
-                            [0, width - 1],
-                            [height - 1, 0],
-                            [height - 1, width - 1],
-                            [height - 3, width - 3]];
-
-  // Calculate all reference points based on top left and compare.
-  for (var j = 0; j < rowsColumnsToCheck.length; ++j) {
-    var row = rowsColumnsToCheck[j][0];
-    var column = rowsColumnsToCheck[j][1];
-    var i = (width * row + column) * 4;
-    var calculated = (data[0] + wrap_around +
-                      step * ((flip_y ? -row : row) + column)) % wrap_around;
-    if (Math.abs(calculated - data[i]) > tolerance) {
-      return Promise.reject(test_name + ": reference value " + data[i] +
-          " differs from calculated: " + calculated +
-          " at index (row, column) " + i + " (" + row + ", " + column +
-          "). TopLeft value:" + data[0] + ", step:" + step + ", flip_y:" +
-          flip_y);
-    }
-  }
-  return true;
-}