2 * Mesa 3-D graphics library
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.
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:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
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.
32 #include "glformats.h"
39 * Functions for the GL_ARB_vertex_array_object extension.
41 * \author Ian Romanick <idr@us.ibm.com>
49 extern struct gl_vertex_array_object
*
50 _mesa_lookup_vao(struct gl_context
*ctx
, GLuint id
);
52 extern struct gl_vertex_array_object
*
53 _mesa_lookup_vao_err(struct gl_context
*ctx
, GLuint id
,
54 bool is_ext_dsa
, const char *caller
);
56 extern struct gl_vertex_array_object
*
57 _mesa_new_vao(struct gl_context
*ctx
, GLuint name
);
60 _mesa_delete_vao(struct gl_context
*ctx
, struct gl_vertex_array_object
*obj
);
63 _mesa_reference_vao_(struct gl_context
*ctx
,
64 struct gl_vertex_array_object
**ptr
,
65 struct gl_vertex_array_object
*vao
);
68 _mesa_reference_vao(struct gl_context
*ctx
,
69 struct gl_vertex_array_object
**ptr
,
70 struct gl_vertex_array_object
*vao
)
73 _mesa_reference_vao_(ctx
, ptr
, vao
);
78 _mesa_initialize_vao(struct gl_context
*ctx
,
79 struct gl_vertex_array_object
*obj
, GLuint name
);
83 _mesa_update_vao_derived_arrays(struct gl_context
*ctx
,
84 struct gl_vertex_array_object
*vao
);
88 * Mark the vao as shared and immutable, do remaining updates.
91 _mesa_set_vao_immutable(struct gl_context
*ctx
,
92 struct gl_vertex_array_object
*vao
);
95 /* Returns true if all varying arrays reside in vbos */
97 _mesa_all_varyings_in_vbos(const struct gl_vertex_array_object
*vao
);
99 /* Returns true if all vbos are unmapped */
101 _mesa_all_buffers_are_unmapped(const struct gl_vertex_array_object
*vao
);
105 _mesa_vao_map_arrays(struct gl_context
*ctx
, struct gl_vertex_array_object
*vao
,
109 _mesa_vao_map(struct gl_context
*ctx
, struct gl_vertex_array_object
*vao
,
114 _mesa_vao_unmap_arrays(struct gl_context
*ctx
,
115 struct gl_vertex_array_object
*vao
);
118 _mesa_vao_unmap(struct gl_context
*ctx
,
119 struct gl_vertex_array_object
*vao
);
123 * Array to apply the position/generic0 aliasing map to
124 * an attribute value used in vertex processing inputs to an attribute
125 * as they appear in the vao.
128 _mesa_vao_attribute_map
[ATTRIBUTE_MAP_MODE_MAX
][VERT_ATTRIB_MAX
];
132 * Apply the position/generic0 aliasing map to a bitfield from the vao.
133 * Use for example to convert gl_vertex_array_object::Enabled
134 * or gl_vertex_buffer_binding::_VertexBinding from the vao numbering to
135 * the numbering used with vertex processing inputs.
137 static inline GLbitfield
138 _mesa_vao_enable_to_vp_inputs(gl_attribute_map_mode mode
, GLbitfield enabled
)
141 case ATTRIBUTE_MAP_MODE_IDENTITY
:
143 case ATTRIBUTE_MAP_MODE_POSITION
:
144 /* Copy VERT_ATTRIB_POS enable bit into GENERIC0 position */
145 return (enabled
& ~VERT_BIT_GENERIC0
)
146 | ((enabled
& VERT_BIT_POS
) << VERT_ATTRIB_GENERIC0
);
147 case ATTRIBUTE_MAP_MODE_GENERIC0
:
148 /* Copy VERT_ATTRIB_GENERIC0 enable bit into POS position */
149 return (enabled
& ~VERT_BIT_POS
)
150 | ((enabled
& VERT_BIT_GENERIC0
) >> VERT_ATTRIB_GENERIC0
);
158 * Return the vp_inputs enabled bitmask after application of
159 * the position/generic0 aliasing map.
161 static inline GLbitfield
162 _mesa_get_vao_vp_inputs(const struct gl_vertex_array_object
*vao
)
164 const gl_attribute_map_mode mode
= vao
->_AttributeMapMode
;
165 return _mesa_vao_enable_to_vp_inputs(mode
, vao
->Enabled
);
170 * Helper functions for consuming backends to walk the
171 * ctx->Array._DrawVAO for driver side array setup.
172 * Note that mesa provides preprocessed minimal binding information
173 * in the VAO. See _mesa_update_vao_derived_arrays for documentation.
177 * Return enabled vertex attribute bits for draw.
179 static inline GLbitfield
180 _mesa_draw_array_bits(const struct gl_context
*ctx
)
182 return ctx
->Array
._DrawVAOEnabledAttribs
;
187 * Return enabled buffer object vertex attribute bits for draw.
189 * Needs the a fully updated VAO ready for draw.
191 static inline GLbitfield
192 _mesa_draw_vbo_array_bits(const struct gl_context
*ctx
)
194 const struct gl_vertex_array_object
*const vao
= ctx
->Array
._DrawVAO
;
195 assert(vao
->NewArrays
== 0);
196 return vao
->_EffEnabledVBO
& ctx
->Array
._DrawVAOEnabledAttribs
;
201 * Return enabled user space vertex attribute bits for draw.
203 * Needs the a fully updated VAO ready for draw.
205 static inline GLbitfield
206 _mesa_draw_user_array_bits(const struct gl_context
*ctx
)
208 const struct gl_vertex_array_object
*const vao
= ctx
->Array
._DrawVAO
;
209 assert(vao
->NewArrays
== 0);
210 return ~vao
->_EffEnabledVBO
& ctx
->Array
._DrawVAOEnabledAttribs
;
215 * Return enabled current values attribute bits for draw.
217 static inline GLbitfield
218 _mesa_draw_current_bits(const struct gl_context
*ctx
)
220 return ~ctx
->Array
._DrawVAOEnabledAttribs
& VERT_BIT_ALL
;
225 * Return vertex buffer binding provided the attribute struct.
227 * Needs the a fully updated VAO ready for draw.
229 static inline const struct gl_vertex_buffer_binding
*
230 _mesa_draw_buffer_binding_from_attrib(const struct gl_vertex_array_object
*vao
,
231 const struct gl_array_attributes
*attrib
)
233 assert(vao
->NewArrays
== 0);
234 return &vao
->BufferBinding
[attrib
->_EffBufferBindingIndex
];
239 * Return vertex array attribute provided the attribute number.
241 static inline const struct gl_array_attributes
*
242 _mesa_draw_array_attrib(const struct gl_vertex_array_object
*vao
,
245 assert(vao
->NewArrays
== 0);
246 const gl_attribute_map_mode map_mode
= vao
->_AttributeMapMode
;
247 return &vao
->VertexAttrib
[_mesa_vao_attribute_map
[map_mode
][attr
]];
252 * Return vertex buffer binding provided an attribute number.
254 static inline const struct gl_vertex_buffer_binding
*
255 _mesa_draw_buffer_binding(const struct gl_vertex_array_object
*vao
,
258 const struct gl_array_attributes
*const attrib
259 = _mesa_draw_array_attrib(vao
, attr
);
260 return _mesa_draw_buffer_binding_from_attrib(vao
, attrib
);
265 * Return vertex attribute bits bound at the provided binding.
267 * Needs the a fully updated VAO ready for draw.
269 static inline GLbitfield
270 _mesa_draw_bound_attrib_bits(const struct gl_vertex_buffer_binding
*binding
)
272 return binding
->_EffBoundArrays
;
277 * Return the vertex offset bound at the provided binding.
279 * Needs the a fully updated VAO ready for draw.
281 static inline GLintptr
282 _mesa_draw_binding_offset(const struct gl_vertex_buffer_binding
*binding
)
284 return binding
->_EffOffset
;
289 * Return the relative offset of the provided attrib.
291 * Needs the a fully updated VAO ready for draw.
293 static inline GLushort
294 _mesa_draw_attributes_relative_offset(const struct gl_array_attributes
*attrib
)
296 return attrib
->_EffRelativeOffset
;
301 * Return a current value vertex array attribute provided the attribute number.
303 static inline const struct gl_array_attributes
*
304 _mesa_draw_current_attrib(const struct gl_context
*ctx
, gl_vert_attrib attr
)
306 return _vbo_current_attrib(ctx
, attr
);
311 * Return true if we have the VERT_ATTRIB_EDGEFLAG array enabled.
314 _mesa_draw_edge_flag_array_enabled(const struct gl_context
*ctx
)
316 return ctx
->Array
._DrawVAOEnabledAttribs
& VERT_BIT_EDGEFLAG
;
321 * Return the attrib for the given attribute.
323 static inline const struct gl_array_attributes
*
324 _mesa_draw_attrib(const struct gl_context
*ctx
, gl_vert_attrib attr
)
326 if (ctx
->Array
._DrawVAOEnabledAttribs
& VERT_BIT(attr
)) {
327 const struct gl_vertex_array_object
*vao
= ctx
->Array
._DrawVAO
;
328 return _mesa_draw_array_attrib(vao
, attr
);
330 return _vbo_current_attrib(ctx
, attr
);
336 * Return the attrib, binding pair for the given attribute.
339 _mesa_draw_attrib_and_binding(const struct gl_context
*ctx
, gl_vert_attrib attr
,
340 const struct gl_array_attributes
**attrib
,
341 const struct gl_vertex_buffer_binding
**binding
)
343 if (ctx
->Array
._DrawVAOEnabledAttribs
& VERT_BIT(attr
)) {
344 const struct gl_vertex_array_object
*vao
= ctx
->Array
._DrawVAO
;
345 *attrib
= _mesa_draw_array_attrib(vao
, attr
);
346 *binding
= _mesa_draw_buffer_binding_from_attrib(vao
, *attrib
);
348 *attrib
= _vbo_current_attrib(ctx
, attr
);
349 *binding
= _vbo_current_binding(ctx
);
360 _mesa_BindVertexArray_no_error(GLuint id
);
362 void GLAPIENTRY
_mesa_BindVertexArray( GLuint id
);
365 _mesa_DeleteVertexArrays_no_error(GLsizei n
, const GLuint
*ids
);
367 void GLAPIENTRY
_mesa_DeleteVertexArrays(GLsizei n
, const GLuint
*ids
);
370 _mesa_GenVertexArrays_no_error(GLsizei n
, GLuint
*arrays
);
372 void GLAPIENTRY
_mesa_GenVertexArrays(GLsizei n
, GLuint
*arrays
);
375 _mesa_CreateVertexArrays_no_error(GLsizei n
, GLuint
*arrays
);
377 void GLAPIENTRY
_mesa_CreateVertexArrays(GLsizei n
, GLuint
*arrays
);
379 GLboolean GLAPIENTRY
_mesa_IsVertexArray( GLuint id
);
382 _mesa_VertexArrayElementBuffer_no_error(GLuint vaobj
, GLuint buffer
);
384 void GLAPIENTRY
_mesa_VertexArrayElementBuffer(GLuint vaobj
, GLuint buffer
);
386 void GLAPIENTRY
_mesa_GetVertexArrayiv(GLuint vaobj
, GLenum pname
, GLint
*param
);
388 #endif /* ARRAYOBJ_H */