https://bugs.freedesktop.org/show_bug.cgi?id=45901

Bug #: 45901 Summary: [r300g, bisected] vs-atan-float-float fail Classification: Unclassified Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Keywords: regression Severity: normal Priority: medium Component: Drivers/Gallium/r300 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: pavel.ondracka@email.cz CC: bryancain3+fdo@gmail.com

I did found this when comparing piglit results between 7.11 and 8.0. With 7.11 this test pass, however merge base was failing so i did a bisect to see what commit fixed this, it was the commit 7d2ff4ae773f2299239d7e1356cb313c11e442a8 so I started another bisect between b1b4ea0b3679db0b8fddaa9663a10d4712bba3b7 (corresponding commit on master) and current head, which ended in

f379d8f73063a4c4d6cf379318c6b37118d46bfa is the first bad commit commit f379d8f73063a4c4d6cf379318c6b37118d46bfa Author: Bryan Cain bryancain3@gmail.com Date: Mon Apr 25 23:37:47 2011 -050

st/mesa: Add a GLSL IR to TGSI translator.

It is still a work in progress at this point, but it produces working and reasonably well-optimized code.

Originally based on ir_to_mesa and st_mesa_to_tgsi, but does not directly use Mesa IR instructions in TGSI generation, instead generating TGSI from the intermediate class glsl_to_tgsi_instruction. It also has new optimization passes to replace _mesa_optimize_program.

GPU: RV530 Kernel: 3.2.3 Libdrm: 2.4.31 xf86-video-ati: e20284409937d784847339b5d466a95012d85940