https://bugs.freedesktop.org/show_bug.cgi?id=30415
Summary: segfault in r300compiler Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r300 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: wixorpeek@gmail.com CC: maraeo@gmail.com
Compilation of this fragment shader segfaults:
uniform vec4 vecX, vecY; uniform int iter;
void main() { bool b = (dot(gl_TexCoord[0], gl_TexCoord[0]) < 4.0); gl_FragColor.z = iter == 0 ? vecX.z - vecY.z : 15.0; if(b) gl_FragColor.x = 1.0; }
Program terminated with signal 11, Segmentation fault. #0 0x00007f202341cd8a in vfprintf () from /lib/libc.so.6 (gdb) bt #0 0x00007f202341cd8a in vfprintf () from /lib/libc.so.6 #1 0x00007f202343e3f2 in vsnprintf () from /lib/libc.so.6 #2 0x00007f2020251ce9 in rc_error (c=0x7fffcd99ca70, fmt=0x7f20209b75f0 "%s::%s(): %s: cannot write output and ALU result at the same time\n") at radeon_compiler.c:73 #3 0x00007f2020264fea in emit_paired (c=<value optimized out>, user=<value optimized out>) at r500_fragprog_emit.c:253 #4 r500BuildFragmentProgramHwCode (c=<value optimized out>, user=<value optimized out>) at r500_fragprog_emit.c:614 #5 0x00007f2020251988 in rc_run_compiler (c=0x7fffcd99ca70, list=0x7fffcd99c900, shader_name=0x7f20209b69a2 "Fragment Program") at radeon_compiler.c:365 #6 0x00007f2020261571 in r3xx_compile_fragment_program (c=0x7fffcd99ca70) at r3xx_fragprog.c:155 #7 0x00007f2020258c53 in r300_translate_fragment_shader (r300=0x257d2a0, shader=0x2ab84d0, tokens=0x269daf0) at r300_fs.c:429 #8 0x00007f2020259644 in r300_pick_fragment_shader (r300=0x257d2a0) at r300_fs.c:507 #9 0x00007f202024b395 in r300_bind_fs_state (pipe=0x257d2a0, shader=0x7f20209b75f6) at r300_state.c:885 #10 0x00007f20203a3f40 in cso_set_fragment_shader_handle (ctx=<value optimized out>, handle=0x7f20209b75f6) at cso_cache/cso_context.c:743 #11 0x00007f202038aef7 in st_validate_state (st=0x25f67d0) at state_tracker/st_atom.c:172 #12 0x00007f202035fd05 in st_draw_vbo (ctx=<value optimized out>, arrays=0x25f9950, prims=<value optimized out>, nr_prims=<value optimized out>, ib=0x4, index_bounds_valid=16 '\020', min_index=0, max_index=3) at state_tracker/st_draw.c:639 #13 0x00007f202038497f in vbo_exec_vtx_flush (exec=0x25f7e00, unmap=<value optimized out>) at vbo/vbo_exec_draw.c:384 #14 0x00007f202038207c in vbo_exec_FlushVertices_internal (ctx=<value optimized out>, unmap=246 '\366') at vbo/vbo_exec_api.c:876 #15 0x00007f20203820d2 in vbo_exec_FlushVertices (ctx=0x490010, flags=1) at vbo/vbo_exec_api.c:910 #16 0x00007f202027ec1e in _mesa_Flush () at main/context.c:1673 #17 0x00007f20237506e6 in glutSwapBuffers () from /usr/lib/libglut.so.3
r300: Initial fragment program FRAG DCL IN[0], GENERIC[0], PERSPECTIVE DCL OUT[0], COLOR DCL CONST[0..2] DCL TEMP[0..2] IMM FLT32 { 4.0000, 0.0000, 15.0000, 1.0000} 0: DP4 TEMP[0].x, IN[0], IN[0] 1: SLT TEMP[1].x, TEMP[0].xxxx, IMM[0].xxxx 2: MOV TEMP[0].x, TEMP[1].xxxx 3: SEQ TEMP[1].x, CONST[0].xxxx, IMM[0].yyyy 4: IF TEMP[1].xxxx :7 5: ADD TEMP[1].x, CONST[2].zzzz, -CONST[1].zzzz 6: MOV TEMP[2].x, TEMP[1].xxxx 7: ELSE :9 8: MOV TEMP[2].x, IMM[0].zzzz 9: ENDIF 10: MOV OUT[0].z, TEMP[2].xxxx 11: IF TEMP[0].xxxx :13 12: MOV OUT[0].x, IMM[0].wwww 13: ENDIF 14: END
The hardware is RV515, mesa is from git, commit 175261a1...