diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp index c4da1a11be8..9d863c273e9 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp @@ -954,6 +954,14 @@ vec4_instruction::can_reswizzle(int dst_writemask, if (mlen > 0) return false; + /* We can't use swizzles on the accumulator and that's really the only + * HW_REG we would care to reswizzle so just disallow them all. + */ + for (int i = 0; i < 3; i++) { + if (src[i].file == HW_REG) + return false; + } + return true; } |