diff options
Diffstat (limited to 'o3d/samples/o3d-webgl/bitmap.js')
| -rw-r--r-- | o3d/samples/o3d-webgl/bitmap.js | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/o3d/samples/o3d-webgl/bitmap.js b/o3d/samples/o3d-webgl/bitmap.js index 9551051..94e90f8 100644 --- a/o3d/samples/o3d-webgl/bitmap.js +++ b/o3d/samples/o3d-webgl/bitmap.js @@ -53,7 +53,7 @@ o3d.Bitmap.Semantic = goog.typedef; * you can inspect their semantic to see what they were intended for. This is * mostly to distinguish between 6 bitmaps that are faces of a cubemap and 6 * bitmaps that are slices of a 3d texture. - * + * * FACE_POSITIVE_X, 1 face of a cubemap * FACE_NEGATIVE_X, 1 face of a cubemap * FACE_POSITIVE_Y, 1 face of a cubemap @@ -103,17 +103,34 @@ o3d.Bitmap.prototype.canvas_ = null; * Flips a bitmap vertically in place. */ o3d.Bitmap.prototype.flipVertically = function() { - this.defer_flip_vertically_to_texture_ = true; + var temp_canvas = document.createElement('CANVAS'); + temp_canvas.width = this.width; + temp_canvas.height = this.height; + var context = temp_canvas.getContext('2d'); + // Flip it. + context.translate(0, this.height); + context.scale(1, -1); + context.drawImage(this.canvas_, + 0, 0, this.width, this.height); + this.canvas_ = temp_canvas; }; +/** + * Flips a bitmap vertically in place lazily. + * @private + */ +o3d.Bitmap.prototype.flipVerticallyLazily_ = function() { + this.defer_flip_vertically_to_texture_ = true; +}; + /** * Generates mip maps from the source level to lower levels. - * + * * You can not currently generate mips for DXT textures although you can load * them from dds files. - * + * * @param {number} source_level The level to use as the source of the mips. * @param {number} num_levels The number of levels to generate below the * source level. |