Tinting sprites seems to be broken under certain conditions

[ricardoquesada]

This PR ( cocos2d/cocos2d-js-tests#60 ) adds a new test that reproduces tinting on sprites.

For some reason, when you tint 2 sprites manually, the 2nd sprite breaks.

Firefox will throw an exception.
Chrome will execute the JS code, but it won't display the 2nd sprite.

[ricardoquesada]

It seems that someone fixed it. Thanks!

[ricardoquesada]

Reopened... this bug is still present. Added a new test in SpriteTest that reproduces it.

It is the last test of SpriteTest. It is called "Texture Color Cache Issue Test #2"

To reproduce, just open the SpriteTest and click on the left arrow ("previous test").
If you click the right arrow ("next test") multiple times until you reach the test, the bug won't be triggered.

This bug can also be triggered by running CocosDragon. The "you win" coin should be green, and instead it is yellow.

[ricardoquesada]

Expected behavior:

Current behavior

[ricardoquesada]

Seems to be working with latest version of cocos2d-html5.