xserver and mesa git update 28-12-2010

1 files changed, 576 insertions, 576 deletions

diff --git a/mesalib/src/mesa/main/arrayobj.c b/mesalib/src/mesa/main/arrayobj.c
index 0069cd3dc..37ecb6b97 100644
--- a/mesalib/src/mesa/main/arrayobj.c
+++ b/mesalib/src/mesa/main/arrayobj.c
@@ -1,576 +1,576 @@
-/*
- * Mesa 3-D graphics library
- * Version:  7.6
- *
- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
- * (C) Copyright IBM Corporation 2006
- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL OR IBM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-
-/**
- * \file arrayobj.c
- * Functions for the GL_APPLE_vertex_array_object extension.
- *
- * \todo
- * The code in this file borrows a lot from bufferobj.c.  There's a certain
- * amount of cruft left over from that origin that may be unnecessary.
- *
- * \author Ian Romanick <idr@us.ibm.com>
- * \author Brian Paul
- */
-
-
-#include "glheader.h"
-#include "hash.h"
-#include "imports.h"
-#include "context.h"
-#if FEATURE_ARB_vertex_buffer_object
-#include "bufferobj.h"
-#endif
-#include "arrayobj.h"
-#include "macros.h"
-#include "main/dispatch.h"
-
-
-/**
- * Look up the array object for the given ID.
- * 
- * \returns
- * Either a pointer to the array object with the specified ID or \c NULL for
- * a non-existent ID.  The spec defines ID 0 as being technically
- * non-existent.
- */
-
-static INLINE struct gl_array_object *
-lookup_arrayobj(GLcontext *ctx, GLuint id)
-{
-   if (id == 0)
-      return NULL;
-   else
-      return (struct gl_array_object *)
-         _mesa_HashLookup(ctx->Array.Objects, id);
-}
-
-
-/**
- * For all the vertex arrays in the array object, unbind any pointers
- * to any buffer objects (VBOs).
- * This is done just prior to array object destruction.
- */
-static void
-unbind_array_object_vbos(GLcontext *ctx, struct gl_array_object *obj)
-{
-   GLuint i;
-
-   _mesa_reference_buffer_object(ctx, &obj->Vertex.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->Weight.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->Normal.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->Color.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->SecondaryColor.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->FogCoord.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->Index.BufferObj, NULL);
-   _mesa_reference_buffer_object(ctx, &obj->EdgeFlag.BufferObj, NULL);
-
-   for (i = 0; i < Elements(obj->TexCoord); i++)
-      _mesa_reference_buffer_object(ctx, &obj->TexCoord[i].BufferObj, NULL);
-
-   for (i = 0; i < Elements(obj->VertexAttrib); i++)
-      _mesa_reference_buffer_object(ctx, &obj->VertexAttrib[i].BufferObj,NULL);
-
-#if FEATURE_point_size_array
-   _mesa_reference_buffer_object(ctx, &obj->PointSize.BufferObj, NULL);
-#endif
-}
-
-
-/**
- * Allocate and initialize a new vertex array object.
- * 
- * This function is intended to be called via
- * \c dd_function_table::NewArrayObject.
- */
-struct gl_array_object *
-_mesa_new_array_object( GLcontext *ctx, GLuint name )
-{
-   struct gl_array_object *obj = CALLOC_STRUCT(gl_array_object);
-   if (obj)
-      _mesa_initialize_array_object(ctx, obj, name);
-   return obj;
-}
-
-
-/**
- * Delete an array object.
- * 
- * This function is intended to be called via
- * \c dd_function_table::DeleteArrayObject.
- */
-void
-_mesa_delete_array_object( GLcontext *ctx, struct gl_array_object *obj )
-{
-   (void) ctx;
-   unbind_array_object_vbos(ctx, obj);
-   _glthread_DESTROY_MUTEX(obj->Mutex);
-   free(obj);
-}
-
-
-/**
- * Set ptr to arrayObj w/ reference counting.
- */
-void
-_mesa_reference_array_object(GLcontext *ctx,
-                             struct gl_array_object **ptr,
-                             struct gl_array_object *arrayObj)
-{
-   if (*ptr == arrayObj)
-      return;
-
-   if (*ptr) {
-      /* Unreference the old array object */
-      GLboolean deleteFlag = GL_FALSE;
-      struct gl_array_object *oldObj = *ptr;
-
-      _glthread_LOCK_MUTEX(oldObj->Mutex);
-      ASSERT(oldObj->RefCount > 0);
-      oldObj->RefCount--;
-#if 0
-      printf("ArrayObj %p %d DECR to %d\n",
-             (void *) oldObj, oldObj->Name, oldObj->RefCount);
-#endif
-      deleteFlag = (oldObj->RefCount == 0);
-      _glthread_UNLOCK_MUTEX(oldObj->Mutex);
-
-      if (deleteFlag) {
-	 ASSERT(ctx->Driver.DeleteArrayObject);
-         ctx->Driver.DeleteArrayObject(ctx, oldObj);
-      }
-
-      *ptr = NULL;
-   }
-   ASSERT(!*ptr);
-
-   if (arrayObj) {
-      /* reference new array object */
-      _glthread_LOCK_MUTEX(arrayObj->Mutex);
-      if (arrayObj->RefCount == 0) {
-         /* this array's being deleted (look just above) */
-         /* Not sure this can every really happen.  Warn if it does. */
-         _mesa_problem(NULL, "referencing deleted array object");
-         *ptr = NULL;
-      }
-      else {
-         arrayObj->RefCount++;
-#if 0
-         printf("ArrayObj %p %d INCR to %d\n",
-                (void *) arrayObj, arrayObj->Name, arrayObj->RefCount);
-#endif
-         *ptr = arrayObj;
-      }
-      _glthread_UNLOCK_MUTEX(arrayObj->Mutex);
-   }
-}
-
-
-
-static void
-init_array(GLcontext *ctx,
-           struct gl_client_array *array, GLint size, GLint type)
-{
-   array->Size = size;
-   array->Type = type;
-   array->Format = GL_RGBA; /* only significant for GL_EXT_vertex_array_bgra */
-   array->Stride = 0;
-   array->StrideB = 0;
-   array->Ptr = NULL;
-   array->Enabled = GL_FALSE;
-   array->Normalized = GL_FALSE;
-#if FEATURE_ARB_vertex_buffer_object
-   /* Vertex array buffers */
-   _mesa_reference_buffer_object(ctx, &array->BufferObj,
-                                 ctx->Shared->NullBufferObj);
-#endif
-}
-
-
-/**
- * Initialize a gl_array_object's arrays.
- */
-void
-_mesa_initialize_array_object( GLcontext *ctx,
-			       struct gl_array_object *obj,
-			       GLuint name )
-{
-   GLuint i;
-
-   obj->Name = name;
-
-   _glthread_INIT_MUTEX(obj->Mutex);
-   obj->RefCount = 1;
-
-   /* Init the individual arrays */
-   init_array(ctx, &obj->Vertex, 4, GL_FLOAT);
-   init_array(ctx, &obj->Weight, 1, GL_FLOAT);
-   init_array(ctx, &obj->Normal, 3, GL_FLOAT);
-   init_array(ctx, &obj->Color, 4, GL_FLOAT);
-   init_array(ctx, &obj->SecondaryColor, 4, GL_FLOAT);
-   init_array(ctx, &obj->FogCoord, 1, GL_FLOAT);
-   init_array(ctx, &obj->Index, 1, GL_FLOAT);
-   for (i = 0; i < Elements(obj->TexCoord); i++) {
-      init_array(ctx, &obj->TexCoord[i], 4, GL_FLOAT);
-   }
-   init_array(ctx, &obj->EdgeFlag, 1, GL_BOOL);
-   for (i = 0; i < Elements(obj->VertexAttrib); i++) {
-      init_array(ctx, &obj->VertexAttrib[i], 4, GL_FLOAT);
-   }
-
-#if FEATURE_point_size_array
-   init_array(ctx, &obj->PointSize, 1, GL_FLOAT);
-#endif
-}
-
-
-/**
- * Add the given array object to the array object pool.
- */
-static void
-save_array_object( GLcontext *ctx, struct gl_array_object *obj )
-{
-   if (obj->Name > 0) {
-      /* insert into hash table */
-      _mesa_HashInsert(ctx->Array.Objects, obj->Name, obj);
-   }
-}
-
-
-/**
- * Remove the given array object from the array object pool.
- * Do not deallocate the array object though.
- */
-static void
-remove_array_object( GLcontext *ctx, struct gl_array_object *obj )
-{
-   if (obj->Name > 0) {
-      /* remove from hash table */
-      _mesa_HashRemove(ctx->Array.Objects, obj->Name);
-   }
-}
-
-
-
-/**
- * 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).
- */
-static GLuint
-update_min(GLuint min, struct gl_client_array *array)
-{
-   compute_max_element(array);
-   if (array->Enabled)
-      return MIN2(min, array->_MaxElement);
-   else
-      return min;
-}
-
-
-/**
- * Examine vertex arrays to update the gl_array_object::_MaxElement field.
- */
-void
-_mesa_update_array_object_max_element(GLcontext *ctx,
-                                      struct gl_array_object *arrayObj)
-{
-   GLuint i, min = ~0;
-
-   min = update_min(min, &arrayObj->Vertex);
-   min = update_min(min, &arrayObj->Weight);
-   min = update_min(min, &arrayObj->Normal);
-   min = update_min(min, &arrayObj->Color);
-   min = update_min(min, &arrayObj->SecondaryColor);
-   min = update_min(min, &arrayObj->FogCoord);
-   min = update_min(min, &arrayObj->Index);
-   min = update_min(min, &arrayObj->EdgeFlag);
-#if FEATURE_point_size_array
-   min = update_min(min, &arrayObj->PointSize);
-#endif
-   for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)
-      min = update_min(min, &arrayObj->TexCoord[i]);
-   for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)
-      min = update_min(min, &arrayObj->VertexAttrib[i]);
-
-   /* _MaxElement is one past the last legal array element */
-   arrayObj->_MaxElement = min;
-}
-
-
-/**********************************************************************/
-/* API Functions                                                      */
-/**********************************************************************/
-
-
-/**
- * Helper for _mesa_BindVertexArray() and _mesa_BindVertexArrayAPPLE().
- * \param genRequired  specifies behavour when id was not generated with
- *                     glGenVertexArrays().
- */
-static void
-bind_vertex_array(GLcontext *ctx, GLuint id, GLboolean genRequired)
-{
-   struct gl_array_object * const oldObj = ctx->Array.ArrayObj;
-   struct gl_array_object *newObj = NULL;
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   ASSERT(oldObj != NULL);
-
-   if ( oldObj->Name == id )
-      return;   /* rebinding the same array object- no change */
-
-   /*
-    * Get pointer to new array object (newObj)
-    */
-   if (id == 0) {
-      /* The spec says there is no array object named 0, but we use
-       * one internally because it simplifies things.
-       */
-      newObj = ctx->Array.DefaultArrayObj;
-   }
-   else {
-      /* non-default array object */
-      newObj = lookup_arrayobj(ctx, id);
-      if (!newObj) {
-         if (genRequired) {
-            _mesa_error(ctx, GL_INVALID_OPERATION, "glBindVertexArray(id)");
-            return;
-         }
-
-         /* For APPLE version, generate a new array object now */
-	 newObj = (*ctx->Driver.NewArrayObject)(ctx, id);
-         if (!newObj) {
-            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindVertexArrayAPPLE");
-            return;
-         }
-         save_array_object(ctx, newObj);
-      }
-   }
-
-   ctx->NewState |= _NEW_ARRAY;
-   ctx->Array.NewState |= _NEW_ARRAY_ALL;
-   _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj, newObj);
-
-   /* Pass BindVertexArray call to device driver */
-   if (ctx->Driver.BindArrayObject && newObj)
-      ctx->Driver.BindArrayObject(ctx, newObj);
-}
-
-
-/**
- * ARB version of glBindVertexArray()
- * This function behaves differently from glBindVertexArrayAPPLE() in
- * that this function requires all ids to have been previously generated
- * by glGenVertexArrays[APPLE]().
- */
-void GLAPIENTRY
-_mesa_BindVertexArray( GLuint id )
-{
-   GET_CURRENT_CONTEXT(ctx);
-   bind_vertex_array(ctx, id, GL_TRUE);
-}
-
-
-/**
- * Bind a new array.
- *
- * \todo
- * The binding could be done more efficiently by comparing the non-NULL
- * pointers in the old and new objects.  The only arrays that are "dirty" are
- * the ones that are non-NULL in either object.
- */
-void GLAPIENTRY
-_mesa_BindVertexArrayAPPLE( GLuint id )
-{
-   GET_CURRENT_CONTEXT(ctx);
-   bind_vertex_array(ctx, id, GL_FALSE);
-}
-
-
-/**
- * Delete a set of array objects.
- * 
- * \param n      Number of array objects to delete.
- * \param ids    Array of \c n array object IDs.
- */
-void GLAPIENTRY
-_mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   GLsizei i;
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (n < 0) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArrayAPPLE(n)");
-      return;
-   }
-
-   for (i = 0; i < n; i++) {
-      struct gl_array_object *obj = lookup_arrayobj(ctx, ids[i]);
-
-      if ( obj != NULL ) {
-	 ASSERT( obj->Name == ids[i] );
-
-	 /* If the array object is currently bound, the spec says "the binding
-	  * for that object reverts to zero and the default vertex array
-	  * becomes current."
-	  */
-	 if ( obj == ctx->Array.ArrayObj ) {
-	    CALL_BindVertexArrayAPPLE( ctx->Exec, (0) );
-	 }
-
-	 /* The ID is immediately freed for re-use */
-	 remove_array_object(ctx, obj);
-
-         /* Unreference the array object. 
-          * If refcount hits zero, the object will be deleted.
-          */
-         _mesa_reference_array_object(ctx, &obj, NULL);
-      }
-   }
-}
-
-
-/**
- * Generate a set of unique array object IDs and store them in \c arrays.
- * Helper for _mesa_GenVertexArrays[APPLE]() functions below.
- * \param n       Number of IDs to generate.
- * \param arrays  Array of \c n locations to store the IDs.
- * \param vboOnly Will arrays have to reside in VBOs?
- */
-static void 
-gen_vertex_arrays(GLcontext *ctx, GLsizei n, GLuint *arrays, GLboolean vboOnly)
-{
-   GLuint first;
-   GLint i;
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (n < 0) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenVertexArraysAPPLE");
-      return;
-   }
-
-   if (!arrays) {
-      return;
-   }
-
-   first = _mesa_HashFindFreeKeyBlock(ctx->Array.Objects, n);
-
-   /* Allocate new, empty array objects and return identifiers */
-   for (i = 0; i < n; i++) {
-      struct gl_array_object *obj;
-      GLuint name = first + i;
-
-      obj = (*ctx->Driver.NewArrayObject)( ctx, name );
-      if (!obj) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenVertexArraysAPPLE");
-         return;
-      }
-      obj->VBOonly = vboOnly;
-      save_array_object(ctx, obj);
-      arrays[i] = first + i;
-   }
-}
-
-
-/**
- * ARB version of glGenVertexArrays()
- * All arrays will be required to live in VBOs.
- */
-void GLAPIENTRY
-_mesa_GenVertexArrays(GLsizei n, GLuint *arrays)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   gen_vertex_arrays(ctx, n, arrays, GL_TRUE);
-}
-
-
-/**
- * APPLE version of glGenVertexArraysAPPLE()
- * Arrays may live in VBOs or ordinary memory.
- */
-void GLAPIENTRY
-_mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *arrays)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   gen_vertex_arrays(ctx, n, arrays, GL_FALSE);
-}
-
-
-/**
- * Determine if ID is the name of an array object.
- * 
- * \param id  ID of the potential array object.
- * \return  \c GL_TRUE if \c id is the name of a array object, 
- *          \c GL_FALSE otherwise.
- */
-GLboolean GLAPIENTRY
-_mesa_IsVertexArrayAPPLE( GLuint id )
-{
-   struct gl_array_object * obj;
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
-   if (id == 0)
-      return GL_FALSE;
-
-   obj = lookup_arrayobj(ctx, id);
-
-   return (obj != NULL) ? GL_TRUE : GL_FALSE;
-}
+/*

+ * Mesa 3-D graphics library

+ * Version:  7.6

+ *

+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

+ * (C) Copyright IBM Corporation 2006

+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * BRIAN PAUL OR IBM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF

+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

+ * SOFTWARE.

+ */

+

+

+/**

+ * \file arrayobj.c

+ * Functions for the GL_APPLE_vertex_array_object extension.

+ *

+ * \todo

+ * The code in this file borrows a lot from bufferobj.c.  There's a certain

+ * amount of cruft left over from that origin that may be unnecessary.

+ *

+ * \author Ian Romanick <idr@us.ibm.com>

+ * \author Brian Paul

+ */

+

+

+#include "glheader.h"

+#include "hash.h"

+#include "imports.h"

+#include "context.h"

+#if FEATURE_ARB_vertex_buffer_object

+#include "bufferobj.h"

+#endif

+#include "arrayobj.h"

+#include "macros.h"

+#include "main/dispatch.h"

+

+

+/**

+ * Look up the array object for the given ID.

+ * 

+ * \returns

+ * Either a pointer to the array object with the specified ID or \c NULL for

+ * a non-existent ID.  The spec defines ID 0 as being technically

+ * non-existent.

+ */

+

+static INLINE struct gl_array_object *

+lookup_arrayobj(struct gl_context *ctx, GLuint id)

+{

+   if (id == 0)

+      return NULL;

+   else

+      return (struct gl_array_object *)

+         _mesa_HashLookup(ctx->Array.Objects, id);

+}

+

+

+/**

+ * For all the vertex arrays in the array object, unbind any pointers

+ * to any buffer objects (VBOs).

+ * This is done just prior to array object destruction.

+ */

+static void

+unbind_array_object_vbos(struct gl_context *ctx, struct gl_array_object *obj)

+{

+   GLuint i;

+

+   _mesa_reference_buffer_object(ctx, &obj->Vertex.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->Weight.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->Normal.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->Color.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->SecondaryColor.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->FogCoord.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->Index.BufferObj, NULL);

+   _mesa_reference_buffer_object(ctx, &obj->EdgeFlag.BufferObj, NULL);

+

+   for (i = 0; i < Elements(obj->TexCoord); i++)

+      _mesa_reference_buffer_object(ctx, &obj->TexCoord[i].BufferObj, NULL);

+

+   for (i = 0; i < Elements(obj->VertexAttrib); i++)

+      _mesa_reference_buffer_object(ctx, &obj->VertexAttrib[i].BufferObj,NULL);

+

+#if FEATURE_point_size_array

+   _mesa_reference_buffer_object(ctx, &obj->PointSize.BufferObj, NULL);

+#endif

+}

+

+

+/**

+ * Allocate and initialize a new vertex array object.

+ * 

+ * This function is intended to be called via

+ * \c dd_function_table::NewArrayObject.

+ */

+struct gl_array_object *

+_mesa_new_array_object( struct gl_context *ctx, GLuint name )

+{

+   struct gl_array_object *obj = CALLOC_STRUCT(gl_array_object);

+   if (obj)

+      _mesa_initialize_array_object(ctx, obj, name);

+   return obj;

+}

+

+

+/**

+ * Delete an array object.

+ * 

+ * This function is intended to be called via

+ * \c dd_function_table::DeleteArrayObject.

+ */

+void

+_mesa_delete_array_object( struct gl_context *ctx, struct gl_array_object *obj )

+{

+   (void) ctx;

+   unbind_array_object_vbos(ctx, obj);

+   _glthread_DESTROY_MUTEX(obj->Mutex);

+   free(obj);

+}

+

+

+/**

+ * Set ptr to arrayObj w/ reference counting.

+ */

+void

+_mesa_reference_array_object(struct gl_context *ctx,

+                             struct gl_array_object **ptr,

+                             struct gl_array_object *arrayObj)

+{

+   if (*ptr == arrayObj)

+      return;

+

+   if (*ptr) {

+      /* Unreference the old array object */

+      GLboolean deleteFlag = GL_FALSE;

+      struct gl_array_object *oldObj = *ptr;

+

+      _glthread_LOCK_MUTEX(oldObj->Mutex);

+      ASSERT(oldObj->RefCount > 0);

+      oldObj->RefCount--;

+#if 0

+      printf("ArrayObj %p %d DECR to %d\n",

+             (void *) oldObj, oldObj->Name, oldObj->RefCount);

+#endif

+      deleteFlag = (oldObj->RefCount == 0);

+      _glthread_UNLOCK_MUTEX(oldObj->Mutex);

+

+      if (deleteFlag) {

+	 ASSERT(ctx->Driver.DeleteArrayObject);

+         ctx->Driver.DeleteArrayObject(ctx, oldObj);

+      }

+

+      *ptr = NULL;

+   }

+   ASSERT(!*ptr);

+

+   if (arrayObj) {

+      /* reference new array object */

+      _glthread_LOCK_MUTEX(arrayObj->Mutex);

+      if (arrayObj->RefCount == 0) {

+         /* this array's being deleted (look just above) */

+         /* Not sure this can every really happen.  Warn if it does. */

+         _mesa_problem(NULL, "referencing deleted array object");

+         *ptr = NULL;

+      }

+      else {

+         arrayObj->RefCount++;

+#if 0

+         printf("ArrayObj %p %d INCR to %d\n",

+                (void *) arrayObj, arrayObj->Name, arrayObj->RefCount);

+#endif

+         *ptr = arrayObj;

+      }

+      _glthread_UNLOCK_MUTEX(arrayObj->Mutex);

+   }

+}

+

+

+

+static void

+init_array(struct gl_context *ctx,

+           struct gl_client_array *array, GLint size, GLint type)

+{

+   array->Size = size;

+   array->Type = type;

+   array->Format = GL_RGBA; /* only significant for GL_EXT_vertex_array_bgra */

+   array->Stride = 0;

+   array->StrideB = 0;

+   array->Ptr = NULL;

+   array->Enabled = GL_FALSE;

+   array->Normalized = GL_FALSE;

+#if FEATURE_ARB_vertex_buffer_object

+   /* Vertex array buffers */

+   _mesa_reference_buffer_object(ctx, &array->BufferObj,

+                                 ctx->Shared->NullBufferObj);

+#endif

+}

+

+

+/**

+ * Initialize a gl_array_object's arrays.

+ */

+void

+_mesa_initialize_array_object( struct gl_context *ctx,

+			       struct gl_array_object *obj,

+			       GLuint name )

+{

+   GLuint i;

+

+   obj->Name = name;

+

+   _glthread_INIT_MUTEX(obj->Mutex);

+   obj->RefCount = 1;

+

+   /* Init the individual arrays */

+   init_array(ctx, &obj->Vertex, 4, GL_FLOAT);

+   init_array(ctx, &obj->Weight, 1, GL_FLOAT);

+   init_array(ctx, &obj->Normal, 3, GL_FLOAT);

+   init_array(ctx, &obj->Color, 4, GL_FLOAT);

+   init_array(ctx, &obj->SecondaryColor, 4, GL_FLOAT);

+   init_array(ctx, &obj->FogCoord, 1, GL_FLOAT);

+   init_array(ctx, &obj->Index, 1, GL_FLOAT);

+   for (i = 0; i < Elements(obj->TexCoord); i++) {

+      init_array(ctx, &obj->TexCoord[i], 4, GL_FLOAT);

+   }

+   init_array(ctx, &obj->EdgeFlag, 1, GL_BOOL);

+   for (i = 0; i < Elements(obj->VertexAttrib); i++) {

+      init_array(ctx, &obj->VertexAttrib[i], 4, GL_FLOAT);

+   }

+

+#if FEATURE_point_size_array

+   init_array(ctx, &obj->PointSize, 1, GL_FLOAT);

+#endif

+}

+

+

+/**

+ * Add the given array object to the array object pool.

+ */

+static void

+save_array_object( struct gl_context *ctx, struct gl_array_object *obj )

+{

+   if (obj->Name > 0) {

+      /* insert into hash table */

+      _mesa_HashInsert(ctx->Array.Objects, obj->Name, obj);

+   }

+}

+

+

+/**

+ * Remove the given array object from the array object pool.

+ * Do not deallocate the array object though.

+ */

+static void

+remove_array_object( struct gl_context *ctx, struct gl_array_object *obj )

+{

+   if (obj->Name > 0) {

+      /* remove from hash table */

+      _mesa_HashRemove(ctx->Array.Objects, obj->Name);

+   }

+}

+

+

+

+/**

+ * 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).

+ */

+static GLuint

+update_min(GLuint min, struct gl_client_array *array)

+{

+   compute_max_element(array);

+   if (array->Enabled)

+      return MIN2(min, array->_MaxElement);

+   else

+      return min;

+}

+

+

+/**

+ * Examine vertex arrays to update the gl_array_object::_MaxElement field.

+ */

+void

+_mesa_update_array_object_max_element(struct gl_context *ctx,

+                                      struct gl_array_object *arrayObj)

+{

+   GLuint i, min = ~0;

+

+   min = update_min(min, &arrayObj->Vertex);

+   min = update_min(min, &arrayObj->Weight);

+   min = update_min(min, &arrayObj->Normal);

+   min = update_min(min, &arrayObj->Color);

+   min = update_min(min, &arrayObj->SecondaryColor);

+   min = update_min(min, &arrayObj->FogCoord);

+   min = update_min(min, &arrayObj->Index);

+   min = update_min(min, &arrayObj->EdgeFlag);

+#if FEATURE_point_size_array

+   min = update_min(min, &arrayObj->PointSize);

+#endif

+   for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++)

+      min = update_min(min, &arrayObj->TexCoord[i]);

+   for (i = 0; i < Elements(arrayObj->VertexAttrib); i++)

+      min = update_min(min, &arrayObj->VertexAttrib[i]);

+

+   /* _MaxElement is one past the last legal array element */

+   arrayObj->_MaxElement = min;

+}

+

+

+/**********************************************************************/

+/* API Functions                                                      */

+/**********************************************************************/

+

+

+/**

+ * Helper for _mesa_BindVertexArray() and _mesa_BindVertexArrayAPPLE().

+ * \param genRequired  specifies behavour when id was not generated with

+ *                     glGenVertexArrays().

+ */

+static void

+bind_vertex_array(struct gl_context *ctx, GLuint id, GLboolean genRequired)

+{

+   struct gl_array_object * const oldObj = ctx->Array.ArrayObj;

+   struct gl_array_object *newObj = NULL;

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   ASSERT(oldObj != NULL);

+

+   if ( oldObj->Name == id )

+      return;   /* rebinding the same array object- no change */

+

+   /*

+    * Get pointer to new array object (newObj)

+    */

+   if (id == 0) {

+      /* The spec says there is no array object named 0, but we use

+       * one internally because it simplifies things.

+       */

+      newObj = ctx->Array.DefaultArrayObj;

+   }

+   else {

+      /* non-default array object */

+      newObj = lookup_arrayobj(ctx, id);

+      if (!newObj) {

+         if (genRequired) {

+            _mesa_error(ctx, GL_INVALID_OPERATION, "glBindVertexArray(id)");

+            return;

+         }

+

+         /* For APPLE version, generate a new array object now */

+	 newObj = (*ctx->Driver.NewArrayObject)(ctx, id);

+         if (!newObj) {

+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindVertexArrayAPPLE");

+            return;

+         }

+         save_array_object(ctx, newObj);

+      }

+   }

+

+   ctx->NewState |= _NEW_ARRAY;

+   ctx->Array.NewState |= _NEW_ARRAY_ALL;

+   _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj, newObj);

+

+   /* Pass BindVertexArray call to device driver */

+   if (ctx->Driver.BindArrayObject && newObj)

+      ctx->Driver.BindArrayObject(ctx, newObj);

+}

+

+

+/**

+ * ARB version of glBindVertexArray()

+ * This function behaves differently from glBindVertexArrayAPPLE() in

+ * that this function requires all ids to have been previously generated

+ * by glGenVertexArrays[APPLE]().

+ */

+void GLAPIENTRY

+_mesa_BindVertexArray( GLuint id )

+{

+   GET_CURRENT_CONTEXT(ctx);

+   bind_vertex_array(ctx, id, GL_TRUE);

+}

+

+

+/**

+ * Bind a new array.

+ *

+ * \todo

+ * The binding could be done more efficiently by comparing the non-NULL

+ * pointers in the old and new objects.  The only arrays that are "dirty" are

+ * the ones that are non-NULL in either object.

+ */

+void GLAPIENTRY

+_mesa_BindVertexArrayAPPLE( GLuint id )

+{

+   GET_CURRENT_CONTEXT(ctx);

+   bind_vertex_array(ctx, id, GL_FALSE);

+}

+

+

+/**

+ * Delete a set of array objects.

+ * 

+ * \param n      Number of array objects to delete.

+ * \param ids    Array of \c n array object IDs.

+ */

+void GLAPIENTRY

+_mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)

+{

+   GET_CURRENT_CONTEXT(ctx);

+   GLsizei i;

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (n < 0) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArrayAPPLE(n)");

+      return;

+   }

+

+   for (i = 0; i < n; i++) {

+      struct gl_array_object *obj = lookup_arrayobj(ctx, ids[i]);

+

+      if ( obj != NULL ) {

+	 ASSERT( obj->Name == ids[i] );

+

+	 /* If the array object is currently bound, the spec says "the binding

+	  * for that object reverts to zero and the default vertex array

+	  * becomes current."

+	  */

+	 if ( obj == ctx->Array.ArrayObj ) {

+	    CALL_BindVertexArrayAPPLE( ctx->Exec, (0) );

+	 }

+

+	 /* The ID is immediately freed for re-use */

+	 remove_array_object(ctx, obj);

+

+         /* Unreference the array object. 

+          * If refcount hits zero, the object will be deleted.

+          */

+         _mesa_reference_array_object(ctx, &obj, NULL);

+      }

+   }

+}

+

+

+/**

+ * Generate a set of unique array object IDs and store them in \c arrays.

+ * Helper for _mesa_GenVertexArrays[APPLE]() functions below.

+ * \param n       Number of IDs to generate.

+ * \param arrays  Array of \c n locations to store the IDs.

+ * \param vboOnly Will arrays have to reside in VBOs?

+ */

+static void 

+gen_vertex_arrays(struct gl_context *ctx, GLsizei n, GLuint *arrays, GLboolean vboOnly)

+{

+   GLuint first;

+   GLint i;

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (n < 0) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenVertexArraysAPPLE");

+      return;

+   }

+

+   if (!arrays) {

+      return;

+   }

+

+   first = _mesa_HashFindFreeKeyBlock(ctx->Array.Objects, n);

+

+   /* Allocate new, empty array objects and return identifiers */

+   for (i = 0; i < n; i++) {

+      struct gl_array_object *obj;

+      GLuint name = first + i;

+

+      obj = (*ctx->Driver.NewArrayObject)( ctx, name );

+      if (!obj) {

+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenVertexArraysAPPLE");

+         return;

+      }

+      obj->VBOonly = vboOnly;

+      save_array_object(ctx, obj);

+      arrays[i] = first + i;

+   }

+}

+

+

+/**

+ * ARB version of glGenVertexArrays()

+ * All arrays will be required to live in VBOs.

+ */

+void GLAPIENTRY

+_mesa_GenVertexArrays(GLsizei n, GLuint *arrays)

+{

+   GET_CURRENT_CONTEXT(ctx);

+   gen_vertex_arrays(ctx, n, arrays, GL_TRUE);

+}

+

+

+/**

+ * APPLE version of glGenVertexArraysAPPLE()

+ * Arrays may live in VBOs or ordinary memory.

+ */

+void GLAPIENTRY

+_mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *arrays)

+{

+   GET_CURRENT_CONTEXT(ctx);

+   gen_vertex_arrays(ctx, n, arrays, GL_FALSE);

+}

+

+

+/**

+ * Determine if ID is the name of an array object.

+ * 

+ * \param id  ID of the potential array object.

+ * \return  \c GL_TRUE if \c id is the name of a array object, 

+ *          \c GL_FALSE otherwise.

+ */

+GLboolean GLAPIENTRY

+_mesa_IsVertexArrayAPPLE( GLuint id )

+{

+   struct gl_array_object * obj;

+   GET_CURRENT_CONTEXT(ctx);

+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

+

+   if (id == 0)

+      return GL_FALSE;

+

+   obj = lookup_arrayobj(ctx, id);

+

+   return (obj != NULL) ? GL_TRUE : GL_FALSE;

+}