<table><tr><td style="">romangg created this revision.<br />romangg added a reviewer: KWin.<br />Herald added a project: KWin.<br />Herald added a subscriber: kwin.<br />romangg requested review of this revision.
</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/D25907">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>In case the hardware is not able to rotate the output for the configured<br />
rotation value do this rotation in a post-process step.</p>
<p>For that rendering the current view into a separate framebuffer bound to a<br />
texture that then gets sampled to the default framebuffer in an additional<br />
rendering pass through a simple shader rotating it.</p>
<p>This allows us to leave the Effects system and internal model-view-projection<br />
matrix untouched. The rotation in the post-processing step is isolated.</p></div></div><br /><div><strong>TEST PLAN</strong><div><p>With KScreen all rotations work.</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>BRANCH</strong><div><div>post-process-rotation</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D25907">https://phabricator.kde.org/D25907</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>plugins/platforms/drm/drm_output.cpp<br />
plugins/platforms/drm/egl_gbm_backend.cpp<br />
plugins/platforms/drm/egl_gbm_backend.h</div></div></div><br /><div><strong>To: </strong>romangg, KWin<br /><strong>Cc: </strong>kwin, LeGast00n, The-Feren-OS-Dev, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart<br /></div>