<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#c9">Comment # 9</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>(In reply to asimiklit from <a href="show_bug.cgi?id=107987#c8">comment #8</a>) > 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> *wording fix* 1. Use shader program which uses at least one 'texture sample' in FS instead of 'FF'.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>