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      1 /*
      2  * Mesa 3-D graphics library
      3  * Version:  7.6
      4  *
      5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
      6  * (C) Copyright IBM Corporation 2006
      7  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
      8  *
      9  * Permission is hereby granted, free of charge, to any person obtaining a
     10  * copy of this software and associated documentation files (the "Software"),
     11  * to deal in the Software without restriction, including without limitation
     12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     13  * and/or sell copies of the Software, and to permit persons to whom the
     14  * Software is furnished to do so, subject to the following conditions:
     15  *
     16  * The above copyright notice and this permission notice shall be included
     17  * in all copies or substantial portions of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     22  * BRIAN PAUL OR IBM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     23  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
     24  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     25  * SOFTWARE.
     26  */
     27 
     28 #ifndef ARRAYOBJ_H
     29 #define ARRAYOBJ_H
     30 
     31 #include "glheader.h"
     32 #include "mtypes.h"
     33 #include "glformats.h"
     34 
     35 struct gl_context;
     36 
     37 /**
     38  * \file arrayobj.h
     39  * Functions for the GL_APPLE_vertex_array_object extension.
     40  *
     41  * \author Ian Romanick <idr (at) us.ibm.com>
     42  * \author Brian Paul
     43  */
     44 
     45 /*
     46  * Internal functions
     47  */
     48 
     49 extern struct gl_array_object *
     50 _mesa_new_array_object( struct gl_context *ctx, GLuint name );
     51 
     52 extern void
     53 _mesa_delete_array_object( struct gl_context *ctx, struct gl_array_object *obj );
     54 
     55 extern void
     56 _mesa_reference_array_object_(struct gl_context *ctx,
     57                               struct gl_array_object **ptr,
     58                               struct gl_array_object *arrayObj);
     59 
     60 static inline void
     61 _mesa_reference_array_object(struct gl_context *ctx,
     62                              struct gl_array_object **ptr,
     63                              struct gl_array_object *arrayObj)
     64 {
     65    if (*ptr != arrayObj)
     66       _mesa_reference_array_object_(ctx, ptr, arrayObj);
     67 }
     68 
     69 
     70 extern void
     71 _mesa_initialize_array_object( struct gl_context *ctx,
     72                                struct gl_array_object *obj, GLuint name );
     73 
     74 
     75 extern void
     76 _mesa_update_array_object_max_element(struct gl_context *ctx,
     77                                       struct gl_array_object *arrayObj);
     78 
     79 /** Returns the bitmask of all enabled arrays in fixed function mode.
     80  *
     81  *  In fixed function mode only the traditional fixed function arrays
     82  *  are available.
     83  */
     84 static inline GLbitfield64
     85 _mesa_array_object_get_enabled_ff(const struct gl_array_object *arrayObj)
     86 {
     87    return arrayObj->_Enabled & VERT_BIT_FF_ALL;
     88 }
     89 
     90 /** Returns the bitmask of all enabled arrays in nv shader mode.
     91  *
     92  *  In nv shader mode, the nv generic arrays take precedence over
     93  *  the legacy arrays.
     94  */
     95 static inline GLbitfield64
     96 _mesa_array_object_get_enabled_nv(const struct gl_array_object *arrayObj)
     97 {
     98    GLbitfield64 enabled = arrayObj->_Enabled;
     99    return enabled & ~(VERT_BIT_FF_NVALIAS & (enabled >> VERT_ATTRIB_GENERIC0));
    100 }
    101 
    102 /** Returns the bitmask of all enabled arrays in arb/glsl shader mode.
    103  *
    104  *  In arb/glsl shader mode all the fixed function and the arb/glsl generic
    105  *  arrays are available. Only the first generic array takes
    106  *  precedence over the legacy position array.
    107  */
    108 static inline GLbitfield64
    109 _mesa_array_object_get_enabled_arb(const struct gl_array_object *arrayObj)
    110 {
    111    GLbitfield64 enabled = arrayObj->_Enabled;
    112    return enabled & ~(VERT_BIT_POS & (enabled >> VERT_ATTRIB_GENERIC0));
    113 }
    114 
    115 
    116 /*
    117  * API functions
    118  */
    119 
    120 
    121 void GLAPIENTRY _mesa_BindVertexArray( GLuint id );
    122 
    123 void GLAPIENTRY _mesa_BindVertexArrayAPPLE( GLuint id );
    124 
    125 void GLAPIENTRY _mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids);
    126 
    127 void GLAPIENTRY _mesa_GenVertexArrays(GLsizei n, GLuint *arrays);
    128 
    129 void GLAPIENTRY _mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *buffer);
    130 
    131 GLboolean GLAPIENTRY _mesa_IsVertexArrayAPPLE( GLuint id );
    132 
    133 #endif /* ARRAYOBJ_H */
    134