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https://github.com/SerenityOS/serenity
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184 lines
8.2 KiB
HTML
184 lines
8.2 KiB
HTML
<!DOCTYPE html>
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<html><head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<meta charset="UTF-8">
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<title>GIF Suite Image List</title>
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<style>
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.b { background:url(gifsuite_files/bkgd.png); }
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</style>
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</head>
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<body class="vsc-initialized">
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<h1>GIF Suite Image List</h1>
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<p>
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Test GIF images are displayed in the leftmost column. Where they contain multiple frames,
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each frame is rendered as a reference PNG in subsequent columns, exactly as it should appear.
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Any differences indicate a bug in the GIF decoder.
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</p>
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<table cellpadding="8" border="1">
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<tbody>
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<tr>
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<th>Image</th>
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<th>Frame 1</th>
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<th>Frame 2</th>
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<th>Frame 3</th>
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<th>Frame 4</th>
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<th>Notes</th>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/static_nontransparent.gif"></td>
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<td class="b"><img src="gifsuite_files/static_nontransparent.png"></td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td>Static gif with no animation, no transparency</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_noloop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_noloop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_noloop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_noloop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_noloop-3.png"></td>
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<td>Animated gif with 4 frames, no loop, no transparency</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop-3.png"></td>
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<td>Animated gif with 4 frames, looping forever, no transparency</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_interlaced_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_interlaced_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_interlaced_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_interlaced_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_interlaced_loop-3.png"></td>
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<td>Interlaced gif with 4 frames, looping forever, no transparency</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_loop_variable_delay.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_loop_variable_delay-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop_variable_delay-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop_variable_delay-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_loop_variable_delay-3.png"></td>
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<td>Animated gif with 4 frames, looping forever, no transparency, shorter delay between frames 2 and 3</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/static_transparent.gif"></td>
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<td class="b"><img src="gifsuite_files/static_transparent.png"></td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td>Static transparent gif with no animation</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop-3.png"></td>
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<td>Transparent gif with 4 frames, loops forever</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_restoreprev_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_restoreprev_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_restoreprev_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_restoreprev_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_restoreprev_loop-3.png"></td>
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<td>Transparent gif with 4 frames, loops forever, restore previous</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_firstframerestoreprev_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_firstframerestoreprev_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_firstframerestoreprev_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_firstframerestoreprev_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_firstframerestoreprev_loop-3.png"></td>
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<td>Transparent gif with 4 frames, loops forever, first frame restore previous</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_norestore_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_norestore_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_norestore_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_norestore_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_norestore_loop-3.png"></td>
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<td>Transparent gif with 4 transparent frames, loops forever, no dispose</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restorebackground_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restorebackground_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restorebackground_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restorebackground_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restorebackground_loop-3.png"></td>
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<td>Transparent gif with 4 transparent frames, loops forever, restore background</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restoreprev_loop.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restoreprev_loop-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restoreprev_loop-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restoreprev_loop-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_frame_restoreprev_loop-3.png"></td>
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<td>Transparent gif with 4 transparent frames, loops forever, restore previous</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop_frames_out_of_bounds.gif"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop_frames_out_of_bounds-0.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop_frames_out_of_bounds-1.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop_frames_out_of_bounds-2.png"></td>
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<td class="b"><img src="gifsuite_files/animated_transparent_loop_frames_out_of_bounds-3.png"></td>
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<td>
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<p><strong>Erroneous test case:</strong> frame out-of-bounds.
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The first frame is located at offset (200,0) and so is wholly outside of the bounds of the 100x100 GIF.
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The last frame is partially out of bounds, located at (60,60) and of size (50,50).</p>
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<p>Note that the GIF specification is unclear on what to do if a frame extends past the logical
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screen of the GIF, therefore different renderers behave differently here:</p>
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<ul>
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<li>Firefox, ImageMagick: don't expand logical screen, render unwritten pixels as transparent
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<strong>(this is what the reference frames show)</strong>
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<li>Chrome, Edge, IE11: expand logical screen, render unwritten pixels as transparent
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<li>Safari: don't expand logical screen, render unwritten pixels as GIF background colour
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</ul>
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</td>
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</tr>
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<tr>
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<td class="b"><img src="gifsuite_files/bad_lzw_data.gif"></td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td class="b">N/A</td>
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<td>
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<p><strong>Erroneous test case:</strong>. Final frame contains bad LZW data and will fail to decode.
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Decoder implementations are not under any obligation to render anything useful here, however they
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should fail gracefully and not crash.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</body>
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</html>
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