mesa: Add ALIGN() macro to main/macros.h.

Previously this macro existed in 3 separate places, some inside the
intel driver and some outside of it.  It makes more sense to have it
in main/macros.h

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/glsl/linker.cpp

@@ -76,8 +76,6 @@ extern "C" {
 #include "main/shaderobj.h"
 }
 
-#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
-
 /**
  * Visitor that determines whether or not a variable is ever written.
  */

src/mesa/drivers/dri/i965/brw_context.h

@@ -36,6 +36,7 @@
 #include "intel_context.h"
 #include "brw_structs.h"
 #include "main/imports.h"
+#include "main/macros.h"
 
 #ifdef __cplusplus
 extern "C" {

src/mesa/drivers/dri/intel/intel_context.h

@@ -349,19 +349,6 @@ extern char *__progname;
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 
-/**
- * Align a value up to an alignment value
- *
- * If \c value is not already aligned to the requested alignment value, it
- * will be rounded up.
- *
- * \param value  Value to be rounded
- * \param alignment  Alignment value to be used.  This must be a power of two.
- *
- * \sa ROUND_DOWN_TO()
- */
-#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
-
 /**
  * Align a value down to an alignment value
  *

src/mesa/main/extensions.c

@@ -34,11 +34,10 @@
 #include "imports.h"
 #include "context.h"
 #include "extensions.h"
+#include "macros.h"
 #include "mfeatures.h"
 #include "mtypes.h"
 
-#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
-
 enum {
    DISABLE = 0,
    GLL = 1 << API_OPENGL_COMPAT,       /* GL Legacy / Compatibility */

src/mesa/main/macros.h

@@ -656,6 +656,19 @@ INTERP_4F(GLfloat t, GLfloat dst[4], const GLfloat out[4], const GLfloat in[4])
 #define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C))
 #define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C))
 
+/**
+ * Align a value up to an alignment value
+ *
+ * If \c value is not already aligned to the requested alignment value, it
+ * will be rounded up.
+ *
+ * \param value  Value to be rounded
+ * \param alignment  Alignment value to be used.  This must be a power of two.
+ *
+ * \sa ROUND_DOWN_TO()
+ */
+#define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
+
 
 
 /** Cross product of two 3-element vectors */