<html>
    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Drawing at screen boundary is very slow."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=106053">106053</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Drawing at screen boundary is very slow.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/r300
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>cosiekvfj@o2.pl
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>alexdeucher@gmail.com, emil.l.velikov@gmail.com, Hi-Angel@yandex.ru, lemody@gmail.com, madbiologist2016@outlook.com, maraeo@gmail.com, mark.a.janes@intel.com, michel@daenzer.net, nhaehnle@gmail.com, notasas@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=138844" name="attach_138844" title="bitmap for testing">attachment 138844</a> <a href="attachment.cgi?id=138844&action=edit" title="bitmap for testing">[details]</a></span>
bitmap for testing

When a partially visible sprites are drawn to the screen, fps drops really
badly.


code tested:
<a href="https://gist.github.com/vfjpl/bd442e34036547e4ccb05200762fa274">https://gist.github.com/vfjpl/bd442e34036547e4ccb05200762fa274</a>

fully visible = 73.8 fps
fully invisible = 394 fps
partially visible = 5.75 fps


The same situation is happening on Allegro library. I don't know enough OpenGL
to test it directly.

I can provide more test results. Just ask me to do it.

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org R300 Project (0x1002)
    Device: ATI RC410 (0x5a62)
    Version: 17.3.7
    Accelerated: yes
    Video memory: 128MB
    Unified memory: no
    Preferred profile: compat (0x2)
    Max core profile version: 0.0
    Max compat profile version: 2.1
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 2.0


And small question. Why Max core profile shows 0.0? Should I open another
bug-report?</pre>
        </div>
      </p>


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