src/mesa/main/arrayobj.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   5  * (C) Copyright IBM Corporation 2006
   6  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #ifndef ARRAYOBJ_H
  28 #define ARRAYOBJ_H
  29
  30 #include "glheader.h"
  31 #include "mtypes.h"
  32 #include "glformats.h"
  33
  34 struct gl_context;
  35
  36 /**
  37  * \file arrayobj.h
  38  * Functions for the GL_ARB_vertex_array_object extension.
  39  *
  40  * \author Ian Romanick <idr@us.ibm.com>
  41  * \author Brian Paul
  42  */
  43
  44 /*
  45  * Internal functions
  46  */
  47
  48 extern struct gl_vertex_array_object *
  49 _mesa_lookup_vao(struct gl_context *ctx, GLuint id);
  50
  51 extern struct gl_vertex_array_object *
  52 _mesa_lookup_vao_err(struct gl_context *ctx, GLuint id, const char *caller);
  53
  54 extern struct gl_vertex_array_object *
  55 _mesa_new_vao(struct gl_context *ctx, GLuint name);
  56
  57 extern void
  58 _mesa_delete_vao(struct gl_context *ctx, struct gl_vertex_array_object *obj);
  59
  60 extern void
  61 _mesa_reference_vao_(struct gl_context *ctx,
  62                      struct gl_vertex_array_object **ptr,
  63                      struct gl_vertex_array_object *vao);
  64
  65 static inline void
  66 _mesa_reference_vao(struct gl_context *ctx,
  67                     struct gl_vertex_array_object **ptr,
  68                     struct gl_vertex_array_object *vao)
  69 {
  70    if (*ptr != vao)
  71       _mesa_reference_vao_(ctx, ptr, vao);
  72 }
  73
  74
  75 extern void
  76 _mesa_initialize_vao(struct gl_context *ctx,
  77                      struct gl_vertex_array_object *obj, GLuint name);
  78
  79
  80 extern void
  81 _mesa_update_vao_derived_arrays(struct gl_context *ctx,
  82                                 struct gl_vertex_array_object *vao);
  83
  84 /* Returns true if all varying arrays reside in vbos */
  85 extern bool
  86 _mesa_all_varyings_in_vbos(const struct gl_vertex_array_object *vao);
  87
  88 /* Returns true if all vbos are unmapped */
  89 extern bool
  90 _mesa_all_buffers_are_unmapped(const struct gl_vertex_array_object *vao);
  91
  92
  93 /**
  94  * Array to apply the position/generic0 aliasing map to
  95  * an attribute value used in vertex processing inputs to an attribute
  96  * as they appear in the vao.
  97  */
  98 extern const GLubyte
  99 _mesa_vao_attribute_map[ATTRIBUTE_MAP_MODE_MAX][VERT_ATTRIB_MAX];
 100
 101
 102 /**
 103  * Apply the position/generic0 aliasing map to a bitfield from the vao.
 104  * Use for example to convert gl_vertex_array_object::_Enabled
 105  * or gl_vertex_buffer_binding::_VertexBinding from the vao numbering to
 106  * the numbering used with vertex processing inputs.
 107  */
 108 static inline GLbitfield
 109 _mesa_vao_enable_to_vp_inputs(gl_attribute_map_mode mode, GLbitfield enabled)
 110 {
 111    switch (mode) {
 112    case ATTRIBUTE_MAP_MODE_IDENTITY:
 113       return enabled;
 114    case ATTRIBUTE_MAP_MODE_POSITION:
 115       /* Copy VERT_ATTRIB_POS enable bit into GENERIC0 position */
 116       return (enabled & ~VERT_BIT_GENERIC0)
 117          | ((enabled & VERT_BIT_POS) << VERT_ATTRIB_GENERIC0);
 118    case ATTRIBUTE_MAP_MODE_GENERIC0:
 119       /* Copy VERT_ATTRIB_GENERIC0 enable bit into POS position */
 120       return (enabled & ~VERT_BIT_POS)
 121          | ((enabled & VERT_BIT_GENERIC0) >> VERT_ATTRIB_GENERIC0);
 122    default:
 123       return 0;
 124    }
 125 }
 126
 127
 128 /**
 129  * Return the vp_inputs enabled bitmask after application of
 130  * the position/generic0 aliasing map.
 131  */
 132 static inline GLbitfield
 133 _mesa_get_vao_vp_inputs(const struct gl_vertex_array_object *vao)
 134 {
 135    const gl_attribute_map_mode mode = vao->_AttributeMapMode;
 136    return _mesa_vao_enable_to_vp_inputs(mode, vao->_Enabled);
 137 }
 138
 139
 140 /*
 141  * API functions
 142  */
 143
 144
 145 void GLAPIENTRY
 146 _mesa_BindVertexArray_no_error(GLuint id);
 147
 148 void GLAPIENTRY _mesa_BindVertexArray( GLuint id );
 149
 150 void GLAPIENTRY
 151 _mesa_DeleteVertexArrays_no_error(GLsizei n, const GLuint *ids);
 152
 153 void GLAPIENTRY _mesa_DeleteVertexArrays(GLsizei n, const GLuint *ids);
 154
 155 void GLAPIENTRY
 156 _mesa_GenVertexArrays_no_error(GLsizei n, GLuint *arrays);
 157
 158 void GLAPIENTRY _mesa_GenVertexArrays(GLsizei n, GLuint *arrays);
 159
 160 void GLAPIENTRY
 161 _mesa_CreateVertexArrays_no_error(GLsizei n, GLuint *arrays);
 162
 163 void GLAPIENTRY _mesa_CreateVertexArrays(GLsizei n, GLuint *arrays);
 164
 165 GLboolean GLAPIENTRY _mesa_IsVertexArray( GLuint id );
 166
 167 void GLAPIENTRY
 168 _mesa_VertexArrayElementBuffer_no_error(GLuint vaobj, GLuint buffer);
 169
 170 void GLAPIENTRY _mesa_VertexArrayElementBuffer(GLuint vaobj, GLuint buffer);
 171
 172 void GLAPIENTRY _mesa_GetVertexArrayiv(GLuint vaobj, GLenum pname, GLint *param);
 173
 174 #endif /* ARRAYOBJ_H */