From 57d882b6847128fe5f72575f61a2b2dace7ac46c Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Wed, 17 Sep 2003 16:06:49 +0000
Subject: GL_ARB_vertex_buffer_object working now, at least for non-indexed
 vertex arrays.

---
 src/mesa/array_cache/ac_context.c | 32 ++++++++++++++++++++++----------
 src/mesa/array_cache/ac_import.c  | 32 ++++++++++++++++++++------------
 2 files changed, 42 insertions(+), 22 deletions(-)

(limited to 'src/mesa/array_cache')

diff --git a/src/mesa/array_cache/ac_context.c b/src/mesa/array_cache/ac_context.c
index e3c09fbd20..b259d5d071 100644
--- a/src/mesa/array_cache/ac_context.c
+++ b/src/mesa/array_cache/ac_context.c
@@ -328,28 +328,40 @@ GLboolean _ac_CreateContext( GLcontext *ctx )
 
 void _ac_DestroyContext( GLcontext *ctx )
 {
+   struct gl_buffer_object *nullObj = ctx->Array.NullBufferObj;
    ACcontext *ac = AC_CONTEXT(ctx);
    GLint i;
 
-   if (ac->Cache.Vertex.Ptr) FREE( ac->Cache.Vertex.Ptr );
-   if (ac->Cache.Normal.Ptr) FREE( ac->Cache.Normal.Ptr );
-   if (ac->Cache.Color.Ptr) FREE( ac->Cache.Color.Ptr );
-   if (ac->Cache.SecondaryColor.Ptr) FREE( ac->Cache.SecondaryColor.Ptr );
-   if (ac->Cache.EdgeFlag.Ptr) FREE( ac->Cache.EdgeFlag.Ptr );
-   if (ac->Cache.Index.Ptr) FREE( ac->Cache.Index.Ptr );
-   if (ac->Cache.FogCoord.Ptr) FREE( ac->Cache.FogCoord.Ptr );
+   /* only free vertex data if it's really a pointer to vertex data and
+    * not an offset into a buffer object.
+    */
+   if (ac->Cache.Vertex.Ptr && ac->Cache.Vertex.BufferObj == nullObj)
+      FREE( ac->Cache.Vertex.Ptr );
+   if (ac->Cache.Normal.Ptr && ac->Cache.Normal.BufferObj == nullObj)
+      FREE( ac->Cache.Normal.Ptr );
+   if (ac->Cache.Color.Ptr && ac->Cache.Color.BufferObj == nullObj)
+      FREE( ac->Cache.Color.Ptr );
+   if (ac->Cache.SecondaryColor.Ptr && ac->Cache.SecondaryColor.BufferObj == nullObj)
+      FREE( ac->Cache.SecondaryColor.Ptr );
+   if (ac->Cache.EdgeFlag.Ptr && ac->Cache.EdgeFlag.BufferObj == nullObj)
+      FREE( ac->Cache.EdgeFlag.Ptr );
+   if (ac->Cache.Index.Ptr && ac->Cache.Index.BufferObj == nullObj)
+      FREE( ac->Cache.Index.Ptr );
+   if (ac->Cache.FogCoord.Ptr && ac->Cache.FogCoord.BufferObj == nullObj)
+      FREE( ac->Cache.FogCoord.Ptr );
 
    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
-      if (ac->Cache.TexCoord[i].Ptr)
+      if (ac->Cache.TexCoord[i].Ptr && ac->Cache.TexCoord[i].BufferObj == nullObj)
 	 FREE( ac->Cache.TexCoord[i].Ptr );
    }
 
    for (i = 0; i < VERT_ATTRIB_MAX; i++) {
-      if (ac->Cache.Attrib[i].Ptr)
+      if (ac->Cache.Attrib[i].Ptr && ac->Cache.Attrib[i].BufferObj == nullObj)
 	 FREE( ac->Cache.Attrib[i].Ptr );
    }
 
-   if (ac->Elts) FREE( ac->Elts );
+   if (ac->Elts)
+      FREE( ac->Elts );
 
    /* Free the context structure itself */
    FREE(ac);
diff --git a/src/mesa/array_cache/ac_import.c b/src/mesa/array_cache/ac_import.c
index b2b7eeb219..78f5435635 100644
--- a/src/mesa/array_cache/ac_import.c
+++ b/src/mesa/array_cache/ac_import.c
@@ -34,17 +34,17 @@
 #include "array_cache/ac_context.h"
 #include "math/m_translate.h"
 
-#define STRIDE_ARRAY( array, offset ) 		\
-do {						\
-   GLubyte *tmp = (array).Ptr;			\
-   tmp += (offset) * (array).StrideB;		\
-   (array).Ptr = tmp;				\
+#define STRIDE_ARRAY( array, offset ) 					\
+do {									\
+   GLubyte *tmp = ADD_POINTERS( (array).BufferObj->Data, (array).Ptr )	\
+                + (offset) * (array).StrideB;				\
+   (array).Ptr = tmp;							\
 } while (0)
 
+
 /* Set the array pointer back to its source when the cached data is
  * invalidated:
  */
-
 static void reset_texcoord( GLcontext *ctx, GLuint unit )
 {
    ACcontext *ac = AC_CONTEXT(ctx);
@@ -202,15 +202,23 @@ static void import( GLcontext *ctx,
 		    struct gl_client_array *to,
 		    struct gl_client_array *from )
 {
+   GLubyte *dest;
+   const GLubyte *src;
    ACcontext *ac = AC_CONTEXT(ctx);
 
    if (type == 0) 
       type = from->Type;
 
+   /* The dest and source data addresses are the sum of the buffer
+    * object's start plus the vertex array pointer/offset.
+    */
+   dest = ADD_POINTERS(to->BufferObj->Data, to->Ptr);
+   src = ADD_POINTERS(from->BufferObj->Data, from->Ptr);
+
    switch (type) {
    case GL_FLOAT:
-      _math_trans_4fc( (GLfloat (*)[4]) to->Ptr,
-		       from->Ptr,
+      _math_trans_4fc( (GLfloat (*)[4]) dest,
+                       src,
 		       from->StrideB,
 		       from->Type,
 		       from->Size,
@@ -222,8 +230,8 @@ static void import( GLcontext *ctx,
       break;
       
    case GL_UNSIGNED_BYTE:
-      _math_trans_4ub( (GLubyte (*)[4]) to->Ptr,
-		       from->Ptr,
+      _math_trans_4ub( (GLubyte (*)[4]) dest,
+                       src,
 		       from->StrideB,
 		       from->Type,
 		       from->Size,
@@ -235,8 +243,8 @@ static void import( GLcontext *ctx,
       break;
 
    case GL_UNSIGNED_SHORT:
-      _math_trans_4us( (GLushort (*)[4]) to->Ptr,
-		       from->Ptr,
+      _math_trans_4us( (GLushort (*)[4]) dest,
+                       src,
 		       from->StrideB,
 		       from->Type,
 		       from->Size,
-- 
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