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-rw-r--r--src/mesa/main/formats.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index 7e451caf0ff..d938e6ad513 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -191,6 +191,11 @@ static inline void
_mesa_array_format_set_swizzle(mesa_array_format *f,
int32_t x, int32_t y, int32_t z, int32_t w)
{
+ *f &= ~(MESA_ARRAY_FORMAT_SWIZZLE_X_MASK |
+ MESA_ARRAY_FORMAT_SWIZZLE_Y_MASK |
+ MESA_ARRAY_FORMAT_SWIZZLE_Z_MASK |
+ MESA_ARRAY_FORMAT_SWIZZLE_W_MASK);
+
*f |= ((x << 8 ) & MESA_ARRAY_FORMAT_SWIZZLE_X_MASK) |
((y << 11) & MESA_ARRAY_FORMAT_SWIZZLE_Y_MASK) |
((z << 14) & MESA_ARRAY_FORMAT_SWIZZLE_Z_MASK) |