diff options
| -rw-r--r-- | o3d/samples/o3d-webgl/client.js | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/o3d/samples/o3d-webgl/client.js b/o3d/samples/o3d-webgl/client.js index ebbcb8f..3fd450f 100644 --- a/o3d/samples/o3d-webgl/client.js +++ b/o3d/samples/o3d-webgl/client.js @@ -299,6 +299,16 @@ o3d.Client.prototype.packs_ = []; */ o3d.Client.prototype.counter_manager_ = null; +/** + * Whether or not the client sets the alpha channel of all pixels to 1 in the + * final stage of rendering. + * + * By default, this is set to true to mimic the plugin's behavior. If + * a transparent canvas background is desirable, this should be set to false. + * + * @type {boolean} + */ +o3d.Client.prototype.normalizeClearColorAlpha = true; /** * Function that gets called when the client encounters an error. @@ -472,9 +482,11 @@ o3d.Client.prototype.render = function() { // When o3d finally draws to the webpage, the alpha channel should be all 1's // So we clear with a color mask to set all alpha bytes to 1 before drawing. // Before we draw again, the color mask gets set back to all true (above). - this.gl.colorMask(false, false, false, true); - this.gl.clearColor(0.0, 0.0, 0.0, 1.0); - this.gl.clear(this.gl.COLOR_BUFFER_BIT); + if (this.normalizeClearColorAlpha) { + this.gl.colorMask(false, false, false, true); + this.gl.clearColor(0.0, 0.0, 0.0, 1.0); + this.gl.clear(this.gl.COLOR_BUFFER_BIT); + } }; |