<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW] Mishandling of sample count when using an attachment-less framebuffer (assertion error)" href="https://bugs.freedesktop.org/show_bug.cgi?id=93957#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW] Mishandling of sample count when using an attachment-less framebuffer (assertion error)" href="https://bugs.freedesktop.org/show_bug.cgi?id=93957">bug 93957</a> from <a class="email" href="mailto:neil@linux.intel.com" title="Neil Roberts <neil@linux.intel.com>"> Neil Roberts</a> <pre>I started looking into this and made a Piglit test for it here: <a href="http://patchwork.freedesktop.org/patch/72536/">http://patchwork.freedesktop.org/patch/72536/</a> The test shows up more problems in that the value of glGetInteger(GL_SAMPLES) and also gl_NumSamples in the fragment shader is always 0 with a framebuffer with no attachments. I think the solution would be to make these two variables use _mesa_geometric_samples and then somehow make that function give the driver a chance to return a quantized result. That would also fix the driver side when programming the multisample state because it already calls _mesa_geometric_samples to determine the sample count.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>