<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Font rendering issue on Intel GMA X3100/X4500 with Android-x86" href="https://bugs.freedesktop.org/show_bug.cgi?id=92323#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Font rendering issue on Intel GMA X3100/X4500 with Android-x86" href="https://bugs.freedesktop.org/show_bug.cgi?id=92323">bug 92323</a> from <a class="email" href="mailto:issor.oruam@gmail.com" title="Mauro Rossi <issor.oruam@gmail.com>"> Mauro Rossi</a> <pre>Hi, I have added a few checkpoints in src/mesa/drivers/dri/i965/intel_texsubimage.c and src/mesa/drivers/dri/i965/intel_texsubimage.c to see the value of bool variable named ok The result is: 11-01 16:49:04.645 4817 4945 W INTEL-MESA: intelTexSubImage mesa_format MESA_FORMAT_A_UNORM8 target GL_TEXTURE_2D format GL_ALPHA type GL_UNSIGNED_BYTE level 0 1024x512x1 11-01 16:49:04.645 4817 4945 W INTEL-MESA: intelNewTextureObject 11-01 16:49:04.645 4817 4945 W INTEL-MESA: intelNewTextureImage 11-01 16:49:04.652 4817 4945 W INTEL-MESA: MAUROSSI intelTexSubImage _mesa_meta_pbo_TexSubImage() returns: 1 11-01 16:49:04.652 4817 4945 D libEGL : [glTexSubImage2D] 0x500 this means that _mesa_meta_pbo_TexSubImage() reports to have completed its job. In order to check if the font artifact were related to meta implementation I've skipped _mesa_meta_pbo_TexSubImage() completely with /* ... */ and logged intel_texsubimage_tiled_memcpy() and mesa_store_texsubimage() execution. 11-02 02:20:44.825 5078 5096 W INTEL-MESA: intel_texsubimage_tiled_memcpy: MAUROSSI 1st check failed, packing? 11-02 02:20:44.825 5078 5096 W INTEL-MESA: MAUROSSI intelTexSubImage intel_texsubimage_tiled_memcpy() returns: 0 11-02 02:20:44.826 5078 5096 W INTEL-MESA: MAUROSSI intelTexSubImage _mesa_store_texsubimage() executed. The result I get by skipping _mesa_meta_pbo_TexSubImage() is that intel_texsubimage_tiled_memcpy() bails out because of packing, _mesa_store_texsubimage() is executed and there are no font artifacts at all (triple checked). This means that the offending commit lies among the following ones: i965/tex_subimage: use meta instead of the blitter for PBO TexSubImage i965/tex_image: Use meta for instead of the blitter PBO TexImage and GetTexImage i965/pixel_read: Use meta_pbo_GetTexSubImage for PBO ReadPixels meta: Add an implementation of GetTexSubImage for PBOs meta: Add a BlitFramebuffers-based implementation of TexSubImage Mauro</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>