Fixed samples to work with resizing code introduced yesterday. Now the...

samples/o3d-webgl/texture.js

Index: samples/o3d-webgl/texture.js
===================================================================
--- samples/o3d-webgl/texture.js	(revision 45777)
+++ samples/o3d-webgl/texture.js	(working copy)
@@ -281,6 +281,7 @@
                      0,  // Level.
                      bitmap.canvas_,
                      bitmap.defer_flip_vertically_to_texture_);
+  this.setupRepeatModes_(bitmap.canvas_.width, bitmap.canvas_.height);
   if (bitmap.defer_mipmaps_to_texture_) {
     this.generateMips();
   }
@@ -288,6 +289,39 @@
 
 
 /**
+ * Sets up the repeat modes for the given width and height.
+ * Assumes the texture is already bound to the TEXTURE_2D binding point.
+ * @private
+ */
+o3d.Texture2D.prototype.setupRepeatModes_ = function(width, height) {
+  // OpenGL ES 2.0 and consequently WebGL don't support anything but
+  // CLAMP_TO_EDGE for NPOT textures.
+  if (o3d.Texture2D.isPowerOfTwo_(width) &&
+      o3d.Texture2D.isPowerOfTwo_(height)) {
+    this.gl.texParameteri(this.gl.TEXTURE_2D,
+        this.gl.TEXTURE_WRAP_S, this.gl.REPEAT);
+    this.gl.texParameteri(this.gl.TEXTURE_2D,
+        this.gl.TEXTURE_WRAP_T, this.gl.REPEAT);
+  } else {
+    this.gl.texParameteri(this.gl.TEXTURE_2D,
+        this.gl.TEXTURE_WRAP_S, this.gl.CLAMP_TO_EDGE);
+    this.gl.texParameteri(this.gl.TEXTURE_2D,
+        this.gl.TEXTURE_WRAP_T, this.gl.CLAMP_TO_EDGE);
+  }
+};
+
+/**
+ * Indicates whether the given number is a power of two.
+ * @private
+ */
+o3d.Texture2D.isPowerOfTwo_ = function(value) {
+  if (value == undefined)
+    return false;
+  return (value & (value - 1)) == 0;
+};
+
+
+/**
  * Copy pixels from source bitmap to certain mip level.
  * Scales if the width and height of source and dest do not match.
  * TODO(petersont): Takes optional arguments.