diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp index c58fb444b94..e470ac80ab5 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp @@ -200,7 +200,14 @@ dst_reg::dst_reg(src_reg reg) this->reg = reg.reg; this->reg_offset = reg.reg_offset; this->type = reg.type; - this->writemask = WRITEMASK_XYZW; + /* How should we do writemasking when converting from a src_reg? It seems + * pretty obvious that for src.xxxx the caller wants to write to src.x, but + * what about for src.wx? Just special-case src.xxxx for now. + */ + if (reg.swizzle == BRW_SWIZZLE_XXXX) + this->writemask = WRITEMASK_X; + else + this->writemask = WRITEMASK_XYZW; this->reladdr = reg.reladdr; this->fixed_hw_reg = reg.fixed_hw_reg; } |