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-rw-r--r--src/mesa/drivers/dri/i965/brw_reg.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_reg.h b/src/mesa/drivers/dri/i965/brw_reg.h
index 7eab7b51e38..5b427b22230 100644
--- a/src/mesa/drivers/dri/i965/brw_reg.h
+++ b/src/mesa/drivers/dri/i965/brw_reg.h
@@ -972,6 +972,13 @@ brw_writemask_for_size(unsigned n)
return (1 << n) - 1;
}
+static inline unsigned
+brw_writemask_for_component_packing(unsigned n, unsigned first_component)
+{
+ assert(first_component + n <= 4);
+ return (((1 << n) - 1) << first_component);
+}
+
static inline struct brw_reg
negate(struct brw_reg reg)
{