<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [Debug mesa only]. Crash happens when calling drawArrays" href="https://bugs.freedesktop.org/show_bug.cgi?id=107987#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [Debug mesa only]. Crash happens when calling drawArrays" href="https://bugs.freedesktop.org/show_bug.cgi?id=107987">bug 107987</a> from <a class="email" href="mailto:andrey.simiklit@gmail.com" title="asimiklit <andrey.simiklit@gmail.com>"> asimiklit</a> <pre>Created <a href="attachment.cgi?id=141837" name="attach_141837" title="simple reproduccer to simplify the debugging process.">attachment 141837</a> <a href="attachment.cgi?id=141837&action=edit" title="simple reproduccer to simplify the debugging process.">[details]</a> simple reproduccer to simplify the debugging process. Hi, I have created the simple reproducer because debugging the chrome not very convenient. My current progress in this issue: I managed to reproduce this issue in the following way: 1. Use shader program which is used at least one 'texture sample' in FS instead of 'FF'. 2. Setup following property for texture GL_TEXTURE_MIN_FILTER = GL_LINEAR or GL_NEAREST 3. The program must upload level 2 = 4x4, 1 = 2x2, 0 = 1x1. The pixels values is not matter but must be uploaded and sequence of uploading is very matter, firstly level 2 then 1 and lastly 0. 4. The last operation which should cause the assertion is glDrawArrays which uses shader and texture mentioned above to draw some rectangle. I found out that when we try to re-create miptree in 'intel_finalize_mipmap_tree' function we don't consider the 'base level' in width0, height0, depth0 calculations. I not very familiar with this part of the mesa code but I found that the 'intel_miptree_create_for_teximage' function consider the 'base level'. So I tried to do it in 'intel_finalize_mipmap_tree' and that fixes this issue for me. So I hope that this is a possible fix: <a href="https://patchwork.freedesktop.org/patch/254397/">https://patchwork.freedesktop.org/patch/254397/</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>