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vwebp: Clear previous frame when a key triggers a redraw

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otherwise, transparent areas were accumulating.

Change-Id: I066a96a2bcf0cac750b3df0c02229542b1ed3473
(cherry picked from commit c0a27fd2af75dc0c6df7e0847a45fa152b45d0ab)
This commit is contained in:
Pascal Massimino 2016-08-24 11:04:17 +02:00 committed by James Zern
parent 26ffa2962b
commit af2e05cbdf
1 changed files with 3 additions and 0 deletions
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examples/vwebp.c
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@ -242,6 +242,9 @@ static void HandleKey(unsigned char key, int pos_x, int pos_y) {
} }
} else if (key == 'i') { } else if (key == 'i') {
kParams.print_info = 1 - kParams.print_info; kParams.print_info = 1 - kParams.print_info;
// TODO(skal): handle refresh of animation's last-frame too. It's quite
// more involved though (need to save the previous frame).
if (!kParams.has_animation) ClearPreviousFrame();
glutPostRedisplay(); glutPostRedisplay();
} }
} }