diff options
Diffstat (limited to 'mesalib/src/mesa/main/arrayobj.c')
| -rw-r--r-- | mesalib/src/mesa/main/arrayobj.c | 1157 |
1 files changed, 579 insertions, 578 deletions
diff --git a/mesalib/src/mesa/main/arrayobj.c b/mesalib/src/mesa/main/arrayobj.c index 460102233..1033ce639 100644 --- a/mesalib/src/mesa/main/arrayobj.c +++ b/mesalib/src/mesa/main/arrayobj.c @@ -1,578 +1,579 @@ -/* - * 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" -#include "mfeatures.h" -#if FEATURE_ARB_vertex_buffer_object -#include "bufferobj.h" -#endif -#include "arrayobj.h" -#include "macros.h" -#include "mtypes.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, 3, 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; -} +/*
+ * 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"
+#include "mfeatures.h"
+#if FEATURE_ARB_vertex_buffer_object
+#include "bufferobj.h"
+#endif
+#include "arrayobj.h"
+#include "macros.h"
+#include "mtypes.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, 3, 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;
+}
|