#0  intel_region_alloc_for_handle (screen=0x126ddf0, cpp=4, width=3360, height=1050, pitch=3456, handle=1, 
    name=0x7fb78b40a266 "dri2 back buffer") at intel_regions.c:242
#1  0x00007fb78b109f63 in intel_update_renderbuffers (context=0x14c14f0, drawable=0x143aec0) at intel_context.c:390
#2  0x00007fb78b10a10e in intel_prepare_render (intel=0x14f70f0) at intel_context.c:435
#3  0x00007fb78b1395dc in brw_try_draw_prims (ctx=0x14f70f0, arrays=0x1538738, prim=0x1536d54, nr_prims=1, ib=0x0, min_index=0, 
    max_index=3) at brw_draw.c:349
#4  0x00007fb78b1398a7 in brw_draw_prims (ctx=0x14f70f0, arrays=0x1538738, prim=0x1536d54, nr_prims=1, ib=0x0, 
    index_bounds_valid=1 '\001', min_index=0, max_index=3) at brw_draw.c:450
#5  0x00007fb78b255bd4 in vbo_exec_vtx_flush (exec=0x1536a70, keepUnmapped=1 '\001') at vbo/vbo_exec_draw.c:390
#6  0x00007fb78b250c4c in vbo_exec_FlushVertices_internal (exec=0x1536a70, unmap=1 '\001') at vbo/vbo_exec_api.c:545
#7  0x00007fb78b251cc6 in vbo_exec_FlushVertices (ctx=0x14f70f0, flags=1) at vbo/vbo_exec_api.c:992
#8  0x00007fb78b203f82 in _mesa_set_scissor (ctx=0x14f70f0, x=3279, y=925, width=75, height=13) at main/scissor.c:76
#9  0x00007fb78b203efd in _mesa_Scissor (x=3279, y=925, width=75, height=13) at main/scissor.c:49
#10 0x00007fb78ca3d0d9 in __glXDisp_Render (cl=<optimized out>, pc=<optimized out>) at glxcmds.c:2003
#11 0x00007fb78ca3f851 in __glXDispatch (client=0x1426cb0) at glxext.c:587
#12 0x000000000042eb41 in Dispatch () at dispatch.c:431
#13 0x0000000000422dca in main (argc=<optimized out>, argv=0x7fffa0ce14d8, envp=<optimized out>) at main.c:287

#0  intel_region_alloc_for_handle (screen=0x126ddf0, cpp=4, width=3360, height=1050, pitch=3456, handle=1, 
    name=0x7fb78b40a266 "dri2 back buffer") at intel_regions.c:242
        region = 0x0
        dummy = 0x143b490
        buffer = 0x0
        ret = 0
        bit_6_swizzle = 1
        tiling = 21213024
#1  0x00007fb78b109f63 in intel_update_renderbuffers (context=0x14c14f0, drawable=0x143aec0) at intel_context.c:390
        fb = 0x143af60
        rb = 0x143b490
        region = 0x0
        depth_region = 0x0
        intel = 0x14f70f0
        front_rb = 0x143b3b0
        back_rb = 0x143b490
        depth_rb = 0x0
        stencil_rb = 0x0
        buffers = 0x143ad28
        screen = 0x126dc50
        i = 0
        count = 1
        attachments = {1, 32, 131597, 690555136, 690563881, 0, 0, 0, 0, 0}
        region_name = 0x7fb78b40a266 "dri2 back buffer"
        __func__ = "intel_update_renderbuffers"
#2  0x00007fb78b10a10e in intel_prepare_render (intel=0x14f70f0) at intel_context.c:435
        driContext = 0x14c14f0
        drawable = 0x143aec0
#3  0x00007fb78b1395dc in brw_try_draw_prims (ctx=0x14f70f0, arrays=0x1538738, prim=0x1536d54, nr_prims=1, ib=0x0, min_index=0, 
    max_index=3) at brw_draw.c:349
        intel = 0x14f70f0
        brw = 0x14f70f0
        retval = 0 '\000'
        warn = 0 '\000'
        i = 1048576
        __FUNCTION__ = "brw_try_draw_prims"
#4  0x00007fb78b1398a7 in brw_draw_prims (ctx=0x14f70f0, arrays=0x1538738, prim=0x1536d54, nr_prims=1, ib=0x0, 
    index_bounds_valid=1 '\001', min_index=0, max_index=3) at brw_draw.c:450
        retval = 0 '\000'
#5  0x00007fb78b255bd4 in vbo_exec_vtx_flush (exec=0x1536a70, keepUnmapped=1 '\001') at vbo/vbo_exec_draw.c:390
        ctx = 0x14f70f0
#6  0x00007fb78b250c4c in vbo_exec_FlushVertices_internal (exec=0x1536a70, unmap=1 '\001') at vbo/vbo_exec_api.c:545
No locals.
#7  0x00007fb78b251cc6 in vbo_exec_FlushVertices (ctx=0x14f70f0, flags=1) at vbo/vbo_exec_api.c:992
        exec = 0x1536a70
#8  0x00007fb78b203f82 in _mesa_set_scissor (ctx=0x14f70f0, x=3279, y=925, width=75, height=13) at main/scissor.c:76
No locals.
#9  0x00007fb78b203efd in _mesa_Scissor (x=3279, y=925, width=75, height=13) at main/scissor.c:49
        ctx = 0x14f70f0
#10 0x00007fb78ca3d0d9 in __glXDisp_Render (cl=<optimized out>, pc=<optimized out>) at glxcmds.c:2003
        entry = {bytes = 20, varsize = 0}
        proc = 0x7fb78ca1bcd0 <__glXDisp_Scissor>
        err = 0
        req = <optimized out>
        client = 0x1426cb0
        left = <optimized out>
        cmdlen = 20
        error = <optimized out>
        commandsDone = <optimized out>
        opcode = <optimized out>
        hdr = 0x39c7290
        glxc = 0x143b790
        sw = <optimized out>
#11 0x00007fb78ca3f851 in __glXDispatch (client=0x1426cb0) at glxext.c:587
        rendering = <optimized out>
        stuff = 0x39c712c
        opcode = <optimized out>
        proc = 0x7fb78ca3d020 <__glXDisp_Render>
        cl = 0x1426dc8
        retval = <optimized out>
#12 0x000000000042eb41 in Dispatch () at dispatch.c:431
        clientReady = 0x143d3e0
        result = <optimized out>
        client = 0x1426cb0
        nready = 0
        icheck = 0x7e44f0
        start_tick = 200
#13 0x0000000000422dca in main (argc=<optimized out>, argv=0x7fffa0ce14d8, envp=<optimized out>) at main.c:287
        i = <optimized out>
        alwaysCheckForInput = {0, 1}