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<channel>
    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
    </build-info>


<item>
            <title>[MC-2399] Transparent blocks visually use the brighter light level that they are next to</title>
                <link>https://bugs.mojang.com/browse/MC-2399</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Flower pots emit a little light, but they shouldn&apos;t. This appears to be an error.&lt;/p&gt;</description>
                <environment></environment>
        <key id="14020">MC-2399</key>
            <summary>Transparent blocks visually use the brighter light level that they are next to</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="1">Fixed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="mistersanderson">MisterSanderson</reporter>
                        <labels>
                    </labels>
                <created>Tue, 6 Nov 2012 18:31:54 +0100</created>
                <updated>Wed, 7 Feb 2018 12:13:55 +0100</updated>
                            <resolved>Wed, 7 Feb 2018 11:14:53 +0100</resolved>
                                    <version>Minecraft 1.4.2</version>
                    <version>Minecraft 1.4.7</version>
                    <version>Snapshot 13w04a</version>
                    <version>Minecraft 1.5</version>
                    <version>Minecraft 1.5.2</version>
                    <version>Minecraft 1.6.2</version>
                    <version>Minecraft 1.6.4</version>
                    <version>Minecraft 13w39a</version>
                    <version>Minecraft 13w39b</version>
                    <version>Minecraft 1.7.4</version>
                    <version>Minecraft 14w03b</version>
                    <version>Minecraft 14w05b</version>
                    <version>Minecraft 14w34c</version>
                    <version>Minecraft 1.8</version>
                    <version>Minecraft 1.8.1-pre2</version>
                    <version>Minecraft 1.8.1-pre3</version>
                    <version>Minecraft 1.8.1-pre5</version>
                    <version>Minecraft 1.8.1</version>
                    <version>Minecraft 1.8.2-pre4</version>
                    <version>Minecraft 1.8.2-pre5</version>
                    <version>Minecraft 1.8.2-pre6</version>
                    <version>Minecraft 1.10.2</version>
                    <version>Minecraft 16w32a</version>
                    <version>Minecraft 16w32b</version>
                    <version>Minecraft 16w33a</version>
                    <version>Minecraft 16w35a</version>
                    <version>Minecraft 17w06a</version>
                    <version>Minecraft 1.12 Pre-Release 5</version>
                                    <fixVersion>Minecraft 14w04a</fixVersion>
                    <fixVersion>Minecraft 14w33c</fixVersion>
                    <fixVersion>Minecraft 18w05a</fixVersion>
                                                        <votes>19</votes>
                                    <watches>9</watches>
                                                                            <comments>
                            <comment id="433435" author="ericz1" created="Wed, 7 Feb 2018 08:47:32 +0100"  >&lt;p&gt;Appears fixed in 18w05a (possibly earlier).&lt;/p&gt;</comment>
                            <comment id="384923" author="ericz1" created="Thu, 25 May 2017 18:56:00 +0200"  >&lt;p&gt;Confirmed for 1.12-pre5.&lt;/p&gt;</comment>
                            <comment id="229187" author="krnlg" created="Sun, 31 May 2015 17:08:00 +0200"  >&lt;p&gt;I&apos;ve added another attachment to show that even if you light the top of the door it still doesn&apos;t match the brightness of the bottom.&lt;/p&gt;

&lt;p&gt;I can&apos;t see how this isn&apos;t a bug because both halves need to look a similar brightness in the same way as the blocks on the wall next to it.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MC-27466&quot; title=&quot;Lighting bug on door in nether&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-27466&quot;&gt;&lt;del&gt;MC-27466&lt;/del&gt;&lt;/a&gt; was merged with this bug so it appears it is connected rather than a separate bug in its own right.&lt;/p&gt;</comment>
                            <comment id="229183" author="kingsupernova" created="Sun, 31 May 2015 16:49:15 +0200"  >&lt;p&gt;Joshua, I don&apos;t think that&apos;s a bug. When the door is closed, the bottom block of the door is closer to the light source, and so is brighter.&lt;/p&gt;</comment>
                            <comment id="229182" author="krnlg" created="Sun, 31 May 2015 16:31:22 +0200"  >&lt;p&gt;I&apos;ve added some screenshots of this happening very noticeably with doors in 1.8.6. In my opinion this makes the bug more serious due to how noticeable it is. I think perhaps the description could do with being updated as well if this is all one bug, as it is much worse than just affecting flower pots! &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;

&lt;p&gt;When closed, the bottom section of the door is brighter because of the pumpkin in the floor - even though behind the door is a torch.&lt;/p&gt;

&lt;p&gt;When open, both sections are lit evenly.&lt;/p&gt;</comment>
                            <comment id="217833" author="ericz1" created="Mon, 2 Feb 2015 01:18:43 +0100"  >&lt;p&gt;Confirmed all the way up to 1.8.2-pre6.&lt;/p&gt;</comment>
                            <comment id="209780" author="ericz1" created="Tue, 25 Nov 2014 04:04:52 +0100"  >&lt;p&gt;Still in 1.8.1.&lt;/p&gt;</comment>
                            <comment id="207732" author="ericz1" created="Tue, 4 Nov 2014 07:09:13 +0100"  >&lt;p&gt;Confirmed for 1.8.1-pre3, becomes extremely problematic as seen in attached screenshot (with tall grass).&lt;/p&gt;</comment>
                            <comment id="204448" author="ericz1" created="Mon, 20 Oct 2014 09:54:36 +0200"  >&lt;p&gt;Confirmed for 1.8.1-pre2.&lt;/p&gt;</comment>
                            <comment id="202554" author="ericz1" created="Mon, 6 Oct 2014 10:14:17 +0200"  >&lt;p&gt;Confirmed in 1.8.&lt;/p&gt;</comment>
                            <comment id="191042" author="qmagnet" created="Wed, 20 Aug 2014 00:28:10 +0200"  >&lt;p&gt;Ah yes. Difficult to reproduce but finally did see it. Just a visual bug though. Does not affect the lighting level.&lt;/p&gt;</comment>
                            <comment id="190906" author="kumasasa" created="Tue, 19 Aug 2014 20:21:00 +0200"  >&lt;p&gt;Attached &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=goodlyay&quot; class=&quot;user-hover&quot; rel=&quot;goodlyay&quot;&gt;goodlyay&lt;/a&gt;&apos;s screenshots to this ticket and updated the description.&lt;/p&gt;</comment>
                            <comment id="190868" author="shufboyardee" created="Tue, 19 Aug 2014 19:12:15 +0200"  >&lt;p&gt;The issue does exist in 14w34c, it was never fixed. The error occurs within gradients of light, never in total darkness, as Bad Time above mentioned. This should probably be in the description...&lt;/p&gt;</comment>
                            <comment id="190745" author="qmagnet" created="Tue, 19 Aug 2014 17:04:07 +0200"  >&lt;p&gt;No issue found in 14w34b. Probably fixed when &lt;a href=&quot;https://bugs.mojang.com/browse/MC-92&quot; title=&quot;Slab and stairs lighting incorrect&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-92&quot;&gt;&lt;del&gt;MC-92&lt;/del&gt;&lt;/a&gt; was&lt;/p&gt;</comment>
                            <comment id="141479" author="goodlyay" created="Tue, 18 Feb 2014 23:32:04 +0100"  >&lt;p&gt;I think this bug is not explained correctly. The problem is that transparent blocks visually use the brighter light level that they are NEXT to. &lt;/p&gt;

&lt;p&gt;Example pictures:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://dl.dropboxusercontent.com/u/12694594/errror.png&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://dl.dropboxusercontent.com/u/12694594/errror.png&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://dl.dropboxusercontent.com/u/12694594/error2.png&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://dl.dropboxusercontent.com/u/12694594/error2.png&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="137036" author="kumasasa" created="Sat, 1 Feb 2014 00:10:44 +0100"  >&lt;p&gt;Reopened (Probably &lt;a href=&quot;https://bugs.mojang.com/browse/MC-45492&quot; title=&quot;Transparent blocks are much darker&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-45492&quot;&gt;&lt;del&gt;MC-45492&lt;/del&gt;&lt;/a&gt; was fixed by reverting the fix of this issue)&lt;/p&gt;</comment>
                            <comment id="136980" author="goodlyay" created="Fri, 31 Jan 2014 22:06:08 +0100"  >&lt;p&gt;This bug happens AGAIN in 14w05b, after the &quot;transparent blocks are much darker&quot; bug was &quot;fixed&quot;... &lt;/p&gt;</comment>
                            <comment id="134817" author="kumasasa" created="Sat, 25 Jan 2014 02:14:14 +0100"  >&lt;p&gt;That was reported in &lt;a href=&quot;https://bugs.mojang.com/browse/MC-45492&quot; title=&quot;Transparent blocks are much darker&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-45492&quot;&gt;&lt;del&gt;MC-45492&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="134807" author="nixill" created="Sat, 25 Jan 2014 01:53:29 +0100"  >&lt;p&gt;The &quot;fix&quot; isn&apos;t any better - now they are one darker than the brightest neighboring block, even tall grass in direct sunlight!&lt;/p&gt;</comment>
                            <comment id="108496" author="jeuvke" created="Thu, 3 Oct 2013 23:12:12 +0200"  >&lt;p&gt;Still in 13w39b.&lt;/p&gt;</comment>
                            <comment id="106407" author="cubethethird" created="Thu, 26 Sep 2013 04:55:12 +0200"  >&lt;p&gt;Is this still a concern in the &lt;em&gt;current Minecraft version&lt;/em&gt; &lt;b&gt;1.6.4&lt;/b&gt; / Launcher version &lt;b&gt;1.2.5&lt;/b&gt; ? If so, please &lt;em&gt;update the affected versions&lt;/em&gt; in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;</comment>
                            <comment id="40274" author="jonathanhaas" created="Sun, 27 Jan 2013 11:07:30 +0100"  >&lt;p&gt;Note that the summary isn&apos;t completely correct. If the light source is below the transparent block , the brightness of the transparent block is usually one light level below the light level it&apos;s supposed to be.&lt;/p&gt;

&lt;p&gt;I added some screenshots to make this problem more visible. They are made with smooth lighting off in an enclosed cube of iron blocks.&lt;/p&gt;</comment>
                            <comment id="40182" author="mistersanderson" created="Sun, 27 Jan 2013 02:33:33 +0100"  >&lt;p&gt;Now that it was renamed I see that &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2729&quot; title=&quot;Normal glass block is darker than the glass panel / glass panel brighter than glass block&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2729&quot;&gt;&lt;del&gt;MC-2729&lt;/del&gt;&lt;/a&gt; is the same issue.&lt;/p&gt;</comment>
                            <comment id="40162" author="bljat" created="Sun, 27 Jan 2013 01:45:50 +0100"  >&lt;p&gt;Applies to all transparent blocks.&lt;/p&gt;</comment>
                            <comment id="19147" author="mistersanderson" created="Wed, 7 Nov 2012 14:33:40 +0100"  >&lt;p&gt;Daedalus Young, to confirm that it&apos;s not an eye trick, you can cover the pot with your fingers and alternate the tabs where the images are opened, just as Jonathan Haas suggested. If you don&apos;t see the pot but you see the small difference in the light, there&apos;s no eye trick caused by contrast.&lt;/p&gt;</comment>
                            <comment id="19127" author="jonathanhaas" created="Wed, 7 Nov 2012 11:29:25 +0100"  >&lt;p&gt;On a side note, this also explains why half slabs on the ceiling are often rendered too black. The algorithm doesn&apos;t take the brightness of the block below into account, so that should probably be fixed, too.&lt;/p&gt;</comment>
                            <comment id="18909" author="jonathanhaas" created="Tue, 6 Nov 2012 22:16:32 +0100"  >&lt;p&gt;After playing around with this a bit (turning smooth lighting off makes the problem more visible), it seems to me, that transparent blocks are picking their visual brightness from either the block above them or one of the 4 block beside them and they use the maximum brightness from these blocks.&lt;/p&gt;

&lt;p&gt;I&apos;m not really sure why they do that, but that&apos;s clearly the source of the problem. It could problaby fixed by just using the brightness of the block itself or if that&apos;s not possible for whatever reason, just substract 1 from the previously calculated maximum brightness to compensate for the added distance from the lighting source.&lt;/p&gt;</comment>
                            <comment id="18901" author="kumasasa" created="Tue, 6 Nov 2012 22:04:41 +0100"  >&lt;p&gt;Again a contrast enhanced diff - in fact, there is a little difference around the flower pot. &lt;br/&gt;
If this little difference is emitted light of the pot or diffrences in rendering is unclear&lt;/p&gt;</comment>
                            <comment id="18888" author="jonathanhaas" created="Tue, 6 Nov 2012 21:36:01 +0100"  >&lt;p&gt;Well there is a tiny difference in brightness on these images. Just open them in different tabs in your browser and switch between them and you should see it.&lt;/p&gt;

&lt;p&gt;I could reproduce the same thing with redstone dust, stone pressure plates, and so on. Might be either because of some rendering glitch with transparent blocks or because they are slightly darker than the background and the game applies some contrast/hdr filter to the rendered image.&lt;/p&gt;</comment>
                            <comment id="18886" author="kumasasa" created="Tue, 6 Nov 2012 21:32:00 +0100"  >&lt;p&gt;Cannot see it. The slight shadow at the chest is the same. &lt;/p&gt;</comment>
                            <comment id="18885" author="grum" created="Tue, 6 Nov 2012 21:29:27 +0100"  >&lt;p&gt;It actually doesn&apos;t emit light in a gameplay sense, yeah I do indeed notice an ever so tiny brightness increase. Actually not 100% what is causing it, I think the fact that its a tile-entity slightly offsets the lighting.&lt;/p&gt;

&lt;p&gt;Not really much of a problem though &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/tongue.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;

&lt;p&gt;Also Jon; get better diff-tools &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/wink.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="18881" author="daedalusyoung" created="Tue, 6 Nov 2012 21:23:30 +0100"  >&lt;p&gt;I don&apos;t really see it either.&lt;br/&gt;
It may look like it, because of the contrast between the pot and the background. The eye plays lots of tricks.&lt;/p&gt;</comment>
                            <comment id="18873" author="mistersanderson" created="Tue, 6 Nov 2012 21:10:57 +0100"  >&lt;p&gt;Jon, if you open the images in the full size you&apos;ll can see the small difference. I used both a LCD and a LCD LED screen to see it.&lt;/p&gt;</comment>
                            <comment id="18853" author="chalmes" created="Tue, 6 Nov 2012 20:28:15 +0100"  >&lt;p&gt;I don&apos;t see it?&lt;/p&gt;

&lt;p&gt;I ran the two images through a difference filter, and there&apos;s precisely two differences between those two images.  One has a flowerpot (only the pixels showing the flowerpot have changed, nothing surrounding it), and a tiny piece showing through the door is different.&lt;/p&gt;
</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="43620">MC-24340</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="47394">MC-27466</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="52241">MC-31066</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="103106">MC-75008</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="148502">MC-106590</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15074">MC-3143</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10103">
                    <name>Relates</name>
                                            <outwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="71041">MC-45492</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="12574">MC-1253</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="14500">MC-2729</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="14512">MC-2739</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
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                            <attachment id="12422" name="2012-11-04_22.06.33-diff-2.png" size="278102" author="kumasasa" created="Tue, 6 Nov 2012 22:04:41 +0100"/>
                            <attachment id="12406" name="2012-11-04_22.06.33.png" size="278100" author="mistersanderson" created="Tue, 6 Nov 2012 18:31:54 +0100"/>
                            <attachment id="12407" name="2012-11-04_22.06.35.png" size="275386" author="mistersanderson" created="Tue, 6 Nov 2012 18:31:54 +0100"/>
                            <attachment id="19962" name="2013-01-27_11.02.23.png" size="60513" author="jonathanhaas" created="Sun, 27 Jan 2013 11:07:30 +0100"/>
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                            <attachment id="19967" name="2013-01-27_11.03.33.png" size="63670" author="jonathanhaas" created="Sun, 27 Jan 2013 11:07:30 +0100"/>
                            <attachment id="91770" name="2015-05-31_15.28.27.png" size="661523" author="krnlg" created="Sun, 31 May 2015 16:31:22 +0200"/>
                            <attachment id="91771" name="2015-05-31_15.28.32.png" size="623982" author="krnlg" created="Sun, 31 May 2015 16:31:22 +0200"/>
                            <attachment id="91772" name="2015-05-31_16.06.31.png" size="619311" author="krnlg" created="Sun, 31 May 2015 17:08:00 +0200"/>
                            <attachment id="85265" name="Problematic Light.png" size="688822" author="Sonicwave" created="Tue, 4 Nov 2014 07:10:22 +0100"/>
                            <attachment id="78983" name="error2.png" size="135163" author="kumasasa" created="Tue, 19 Aug 2014 20:19:42 +0200"/>
                            <attachment id="78984" name="errror.png" size="199407" author="kumasasa" created="Tue, 19 Aug 2014 20:19:42 +0200"/>
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