2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keithw@vmware.com>
28 #include "main/mtypes.h"
29 #include "main/bufferobj.h"
30 #include "math/m_eval.h"
31 #include "main/vtxfmt.h"
32 #include "main/api_arrayelt.h"
34 #include "vbo_private.h"
38 check_size(const GLfloat
*attr
)
51 * Helper for initializing a vertex array.
54 init_array(struct gl_context
*ctx
, struct gl_vertex_array
*array
,
55 unsigned size
, const void *pointer
)
57 memset(array
, 0, sizeof(*array
));
60 array
->Type
= GL_FLOAT
;
61 array
->Format
= GL_RGBA
;
63 array
->_ElementSize
= array
->Size
* sizeof(GLfloat
);
66 _mesa_reference_buffer_object(ctx
, &array
->BufferObj
,
67 ctx
->Shared
->NullBufferObj
);
72 * Set up the vbo->currval arrays to point at the context's current
73 * vertex attributes (with strides = 0).
76 init_legacy_currval(struct gl_context
*ctx
)
78 struct vbo_context
*vbo
= vbo_context(ctx
);
81 /* Set up a constant (StrideB == 0) array for each current
84 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
85 struct gl_vertex_array
*array
= &vbo
->currval
[VERT_ATTRIB_FF(i
)];
87 init_array(ctx
, array
,
88 check_size(ctx
->Current
.Attrib
[i
]),
89 ctx
->Current
.Attrib
[i
]);
95 init_generic_currval(struct gl_context
*ctx
)
97 struct vbo_context
*vbo
= vbo_context(ctx
);
100 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
101 struct gl_vertex_array
*array
= &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
103 init_array(ctx
, array
, 1, ctx
->Current
.Attrib
[VERT_ATTRIB_GENERIC0
+ i
]);
109 init_mat_currval(struct gl_context
*ctx
)
111 struct vbo_context
*vbo
= vbo_context(ctx
);
114 /* Set up a constant (StrideB == 0) array for each current
117 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
118 struct gl_vertex_array
*array
=
119 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
];
122 /* Size is fixed for the material attributes, for others will
123 * be determined at runtime:
126 case MAT_ATTRIB_FRONT_SHININESS
:
127 case MAT_ATTRIB_BACK_SHININESS
:
130 case MAT_ATTRIB_FRONT_INDEXES
:
131 case MAT_ATTRIB_BACK_INDEXES
:
139 init_array(ctx
, array
, size
, ctx
->Light
.Material
.Attrib
[i
]);
145 * Fallback for when a driver does not call vbo_set_indirect_draw_func().
148 vbo_draw_indirect_prims(struct gl_context
*ctx
,
150 struct gl_buffer_object
*indirect_buffer
,
151 GLsizeiptr indirect_offset
,
154 struct gl_buffer_object
*indirect_draw_count_buffer
,
155 GLsizeiptr indirect_draw_count_offset
,
156 const struct _mesa_index_buffer
*ib
)
158 struct vbo_context
*vbo
= vbo_context(ctx
);
159 struct _mesa_prim
*prim
;
162 prim
= calloc(draw_count
, sizeof(*prim
));
164 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "gl%sDraw%sIndirect%s",
165 (draw_count
> 1) ? "Multi" : "",
166 ib
? "Elements" : "Arrays",
167 indirect_buffer
? "CountARB" : "");
172 prim
[draw_count
- 1].end
= 1;
173 for (i
= 0; i
< draw_count
; ++i
, indirect_offset
+= stride
) {
175 prim
[i
].indexed
= !!ib
;
176 prim
[i
].indirect_offset
= indirect_offset
;
177 prim
[i
].is_indirect
= 1;
181 /* This should always be true at this time */
182 assert(indirect_buffer
== ctx
->DrawIndirectBuffer
);
184 vbo
->draw_prims(ctx
, prim
, draw_count
,
194 _vbo_install_exec_vtxfmt(struct gl_context
*ctx
)
196 struct vbo_context
*vbo
= vbo_context(ctx
);
198 _mesa_install_exec_vtxfmt(ctx
, &vbo
->exec
.vtxfmt
);
203 vbo_exec_invalidate_state(struct gl_context
*ctx
)
205 struct vbo_context
*vbo
= vbo_context(ctx
);
206 struct vbo_exec_context
*exec
= &vbo
->exec
;
208 if (ctx
->NewState
& (_NEW_PROGRAM
| _NEW_ARRAY
)) {
209 if (!exec
->validating
)
210 exec
->array
.recalculate_inputs
= GL_TRUE
;
212 _ae_invalidate_state(ctx
);
215 if (ctx
->NewState
& _NEW_EVAL
)
216 exec
->eval
.recalculate_maps
= GL_TRUE
;
221 _vbo_CreateContext(struct gl_context
*ctx
)
223 struct vbo_context
*vbo
= CALLOC_STRUCT(vbo_context
);
225 ctx
->vbo_context
= vbo
;
227 /* Initialize the arrayelt helper
229 if (!ctx
->aelt_context
&&
230 !_ae_create_context(ctx
)) {
234 init_legacy_currval(ctx
);
235 init_generic_currval(ctx
);
236 init_mat_currval(ctx
);
237 vbo_set_indirect_draw_func(ctx
, vbo_draw_indirect_prims
);
239 /* make sure all VBO_ATTRIB_ values can fit in an unsigned byte */
240 STATIC_ASSERT(VBO_ATTRIB_MAX
<= 255);
242 /* Hook our functions into exec and compile dispatch tables. These
243 * will pretty much be permanently installed, which means that the
244 * vtxfmt mechanism can be removed now.
247 if (ctx
->API
== API_OPENGL_COMPAT
)
257 _vbo_DestroyContext(struct gl_context
*ctx
)
259 struct vbo_context
*vbo
= vbo_context(ctx
);
261 if (ctx
->aelt_context
) {
262 _ae_destroy_context(ctx
);
263 ctx
->aelt_context
= NULL
;
269 for (i
= 0; i
< VBO_ATTRIB_MAX
; i
++) {
270 _mesa_reference_buffer_object(ctx
, &vbo
->currval
[i
].BufferObj
, NULL
);
273 vbo_exec_destroy(ctx
);
274 if (ctx
->API
== API_OPENGL_COMPAT
)
275 vbo_save_destroy(ctx
);
277 ctx
->vbo_context
= NULL
;
283 vbo_set_draw_func(struct gl_context
*ctx
, vbo_draw_func func
)
285 struct vbo_context
*vbo
= vbo_context(ctx
);
286 vbo
->draw_prims
= func
;
291 vbo_set_indirect_draw_func(struct gl_context
*ctx
,
292 vbo_indirect_draw_func func
)
294 struct vbo_context
*vbo
= vbo_context(ctx
);
295 vbo
->draw_indirect_prims
= func
;