<table><tr><td style="">mvourlakos added a comment.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D18377">View Revision</a></tr></table><br /><div><div><blockquote style="border-left: 3px solid #8C98B8;
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D18377#480985" style="background-color: #e7e7e7;
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D18377#480824" style="background-color: #e7e7e7;
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D18377#480776" style="background-color: #e7e7e7;
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<p>You need an Intel graphics card to reproduce this bug.</p></div>
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<p>Yeah, the problem is probably that the GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING is GL_LINEAR with the Intel driver, and that means that the final conversion from linear to sRGB is not happening in the upscaleRenderToScreen() pass.</p>
<p>We should probably not use sRGB textures when the driver reports that the framebuffer color encoding is linear.</p>
<p>However, it might also be a bug in the driver that it doesn't pick an sRGB format for the default framebuffer. We should discuss that with the Intel developers, but I would appreciate it if someone who has an Intel GPU could investigate this a bit further first. At the very least confirm that glGetFramebufferAttachmentParameteriv() in fact returns GL_LINEAR.</p></div>
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<p>I can test if you want:</p>
<ol class="remarkup-list">
<li class="remarkup-list-item">Is there any command that can provide that information?</li>
<li class="remarkup-list-item">Do you have an small testing app that I can compile and return to you the output?</li>
</ol></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D18377">https://phabricator.kde.org/D18377</a></div></div><br /><div><strong>To: </strong>anemeth, VDG, KWin, davidedmundson, zzag, fredrik, ngraham<br /><strong>Cc: </strong>ndavis, mvourlakos, Codezela, fredrik, abetts, Petross404, rapiteanu, filipf, rooty, ngraham, kwin, LeGast00n, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, jensreuterberg, sebas, apol, mart<br /></div>