Issue 1619: Canvas globalCompositeOperation 'lighter' is ugly
http://code.google.com/p/chromium/issues/detail?id=1619

New issue report by Ilmari.Heikkinen:
Product Version      : <see about:version>
URLs (if applicable) : http://glimr.rubyforge.org/cake/missile_fleet.html
Other browsers tested:
   Add OK or FAIL after other browsers where you have tested this issue:
      Safari 3: OK
     Firefox 3: OK
          IE 7: FAIL, No canvas support

What steps will reproduce the problem?
1. Create a canvas, var ctx = canvas.getContext('2d')
2. Draw something
3. Set ctx.globalCompositeOperation = 'lighter'
4. Draw something on top of the existing image

What is the expected result?

The new drawing blended on top of the other, using the 'lighter' blend mode
(whatever that means, it looks like a suspicious mix of screen and color
dodge on Gecko and Safari.)

What happens instead?

The new drawing is blended on top of the other, using something that looks
like the add blend mode, blowing out my carefully tweaked gradients.


Please provide any additional information below. Attach a screenshot if
possible.

See the URL above with e.g. Safari vs. Chrome.

Tested on a laptop with an integrated ATI chip, Mobile Radeon 9000 or
somesuch, no SM 2.0 support (so if you're doing GLSL blending, that's
unlikely to work.)


Issue attributes:
        Status: Unconfirmed
        Owner: [EMAIL PROTECTED]
        Labels: Type-Bug Pri-2 OS-All Area-Unknown

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