diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp index 5fbd3fd8e88..35fabcfe65b 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp @@ -1997,6 +1997,12 @@ get_lowered_simd_width(const struct gen_device_info *devinfo, * only hardware that implements fp64 in Align16. */ if (devinfo->gen == 7 && inst->size_written > REG_SIZE) { + /* Align16 8-wide double-precision SEL does not work well. Verified + * empirically. + */ + if (inst->opcode == BRW_OPCODE_SEL && type_sz(inst->dst.type) == 8) + lowered_width = MIN2(lowered_width, 4); + /* HSW PRM, 3D Media GPGPU Engine, Region Alignment Rules for Direct * Register Addressing: * |