mesa: Move ROUND_DOWN_TO() macro from i915/i965 to macros.h.

This seems generally useful, so it may as well live in core Mesa.

In fact, the comment for ALIGN() in macros.h actually says to "see also"
ROUND_DOWN_TO, which...was in a driver somewhere.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

2 files changed, 12 insertions, 13 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_context.h b/src/mesa/drivers/dri/i915/intel_context.h
index 6edb1895d9c..32730a115ce 100644
--- a/src/mesa/drivers/dri/i915/intel_context.h
+++ b/src/mesa/drivers/dri/i915/intel_context.h
@@ -293,19 +293,6 @@ extern char *__progname;
 #define SUBPIXEL_X 0.125
 #define SUBPIXEL_Y 0.125
 
-/**
- * Align a value down to an alignment value
- *
- * If \c value is not already aligned to the requested alignment value, it
- * will be rounded down.
- *
- * \param value  Value to be rounded
- * \param alignment  Alignment value to be used.  This must be a power of two.
- *
- * \sa ALIGN()
- */
-#define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
-
 static INLINE uint32_t
 U_FIXED(float value, uint32_t frac_bits)
 {
diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index 05aad4eb8b1..4bb17d8d174 100644
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -675,6 +675,18 @@ minify(unsigned value, unsigned levels)
  */
 #define ALIGN(value, alignment)  (((value) + (alignment) - 1) & ~((alignment) - 1))
 
+/**
+ * Align a value down to an alignment value
+ *
+ * If \c value is not already aligned to the requested alignment value, it
+ * will be rounded down.
+ *
+ * \param value  Value to be rounded
+ * \param alignment  Alignment value to be used.  This must be a power of two.
+ *
+ * \sa ALIGN()
+ */
+#define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 
 
 /** Cross product of two 3-element vectors */