From 7b8830d81d816c22d5930bec1f0f178cf0d138c6 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Wed, 6 Apr 2011 14:16:57 -0600
Subject: [PATCH] mesa: consolidate code in _mesa_update_array_max_element()

---
 src/mesa/main/arrayobj.c | 34 ++--------------------------------
 src/mesa/main/state.c    | 33 ++-------------------------------
 src/mesa/main/varray.h   | 31 +++++++++++++++++++++++++++++++
 3 files changed, 35 insertions(+), 63 deletions(-)

diff --git a/src/mesa/main/arrayobj.c b/src/mesa/main/arrayobj.c
index d357ffb421d..85a8e0e569b 100644
--- a/src/mesa/main/arrayobj.c
+++ b/src/mesa/main/arrayobj.c
@@ -50,6 +50,7 @@
 #include "arrayobj.h"
 #include "macros.h"
 #include "mtypes.h"
+#include "varray.h"
 #include "main/dispatch.h"
 
 
@@ -279,37 +280,6 @@ remove_array_object( struct gl_context *ctx, struct gl_array_object *obj )
 
 
 
-/**
- * Compute the index of the last array element that can be safely accessed
- * in a vertex array.  We can really only do this when the array lives in
- * a VBO.
- * The array->_MaxElement field will be updated.
- * Later in glDrawArrays/Elements/etc we can do some bounds checking.
- */
-static void
-compute_max_element(struct gl_client_array *array)
-{
-   if (array->BufferObj->Name) {
-      /* Compute the max element we can access in the VBO without going
-       * out of bounds.
-       */
-      array->_MaxElement = ((GLsizeiptrARB) array->BufferObj->Size
-                            - (GLsizeiptrARB) array->Ptr + array->StrideB
-                            - array->_ElementSize) / array->StrideB;
-      if (0)
-         printf("%s Object %u  Size %u  MaxElement %u\n",
-		__FUNCTION__,
-		array->BufferObj->Name,
-		(GLuint) array->BufferObj->Size,
-		array->_MaxElement);
-   }
-   else {
-      /* user-space array, no idea how big it is */
-      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
-   }
-}
-
-
 /**
  * Helper for update_arrays().
  * \return  min(current min, array->_MaxElement).
@@ -317,7 +287,7 @@ compute_max_element(struct gl_client_array *array)
 static GLuint
 update_min(GLuint min, struct gl_client_array *array)
 {
-   compute_max_element(array);
+   _mesa_update_array_max_element(array);
    if (array->Enabled)
       return MIN2(min, array->_MaxElement);
    else
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 1d1ae47374e..4696dbb526f 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -48,6 +48,7 @@
 #include "texenvprogram.h"
 #include "texobj.h"
 #include "texstate.h"
+#include "varray.h"
 
 
 static void
@@ -60,36 +61,6 @@ update_separate_specular(struct gl_context *ctx)
 }
 
 
-/**
- * Compute the index of the last array element that can be safely accessed
- * in a vertex array.  We can really only do this when the array lives in
- * a VBO.
- * The array->_MaxElement field will be updated.
- * Later in glDrawArrays/Elements/etc we can do some bounds checking.
- */
-static void
-compute_max_element(struct gl_client_array *array)
-{
-   assert(array->Enabled);
-   if (array->BufferObj->Name) {
-      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
-      GLsizeiptrARB obj_size = (GLsizeiptrARB) array->BufferObj->Size;
-
-      if (offset < obj_size) {
-	 array->_MaxElement = (obj_size - offset +
-			       array->StrideB -
-			       array->_ElementSize) / array->StrideB;
-      } else {
-	 array->_MaxElement = 0;
-      }
-   }
-   else {
-      /* user-space array, no idea how big it is */
-      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
-   }
-}
-
-
 /**
  * Helper for update_arrays().
  * \return  min(current min, array->_MaxElement).
@@ -97,7 +68,7 @@ compute_max_element(struct gl_client_array *array)
 static GLuint
 update_min(GLuint min, struct gl_client_array *array)
 {
-   compute_max_element(array);
+   _mesa_update_array_max_element(array);
    return MIN2(min, array->_MaxElement);
 }
 
diff --git a/src/mesa/main/varray.h b/src/mesa/main/varray.h
index 53e68c89667..1c423200ffd 100644
--- a/src/mesa/main/varray.h
+++ b/src/mesa/main/varray.h
@@ -34,6 +34,37 @@
 struct gl_client_array;
 struct gl_context;
 
+
+/**
+ * Compute the index of the last array element that can be safely accessed in
+ * a vertex array.  We can really only do this when the array lives in a VBO.
+ * The array->_MaxElement field will be updated.
+ * Later in glDrawArrays/Elements/etc we can do some bounds checking.
+ */
+static INLINE void
+_mesa_update_array_max_element(struct gl_client_array *array)
+{
+   assert(array->Enabled);
+
+   if (array->BufferObj->Name) {
+      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
+      GLsizeiptrARB bufSize = (GLsizeiptrARB) array->BufferObj->Size;
+
+      if (offset < bufSize) {
+	 array->_MaxElement = (bufSize - offset + array->StrideB
+                               - array->_ElementSize) / array->StrideB;
+      }
+      else {
+	 array->_MaxElement = 0;
+      }
+   }
+   else {
+      /* user-space array, no idea how big it is */
+      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
+   }
+}
+
+
 #if _HAVE_FULL_GL
 
 extern void GLAPIENTRY
-- 
2.30.2