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/imports.h"
29 #include "main/mtypes.h"
30 #include "main/api_arrayelt.h"
31 #include "main/bufferobj.h"
32 #include "math/m_eval.h"
34 #include "vbo_context.h"
37 static GLuint
check_size( const GLfloat
*attr
)
39 if (attr
[3] != 1.0F
) return 4;
40 if (attr
[2] != 0.0F
) return 3;
41 if (attr
[1] != 0.0F
) return 2;
47 * Helper for initializing a vertex array.
50 init_array(struct gl_context
*ctx
, struct gl_vertex_array
*cl
,
51 unsigned size
, const void *pointer
)
53 memset(cl
, 0, sizeof(*cl
));
59 cl
->_ElementSize
= cl
->Size
* sizeof(GLfloat
);
62 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
63 ctx
->Shared
->NullBufferObj
);
68 * Set up the vbo->currval arrays to point at the context's current
69 * vertex attributes (with strides = 0).
71 static void init_legacy_currval(struct gl_context
*ctx
)
73 struct vbo_context
*vbo
= vbo_context(ctx
);
76 /* Set up a constant (StrideB == 0) array for each current
79 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
80 struct gl_vertex_array
*cl
= &vbo
->currval
[VERT_ATTRIB_FF(i
)];
83 check_size(ctx
->Current
.Attrib
[i
]),
84 ctx
->Current
.Attrib
[i
]);
89 static void init_generic_currval(struct gl_context
*ctx
)
91 struct vbo_context
*vbo
= vbo_context(ctx
);
94 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
95 struct gl_vertex_array
*cl
= &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
97 init_array(ctx
, cl
, 1, ctx
->Current
.Attrib
[VERT_ATTRIB_GENERIC0
+ i
]);
102 static void init_mat_currval(struct gl_context
*ctx
)
104 struct vbo_context
*vbo
= vbo_context(ctx
);
107 /* Set up a constant (StrideB == 0) array for each current
110 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
111 struct gl_vertex_array
*cl
=
112 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
];
115 /* Size is fixed for the material attributes, for others will
116 * be determined at runtime:
119 case MAT_ATTRIB_FRONT_SHININESS
:
120 case MAT_ATTRIB_BACK_SHININESS
:
123 case MAT_ATTRIB_FRONT_INDEXES
:
124 case MAT_ATTRIB_BACK_INDEXES
:
132 init_array(ctx
, cl
, size
, ctx
->Light
.Material
.Attrib
[i
]);
137 vbo_draw_indirect_prims(struct gl_context
*ctx
,
139 struct gl_buffer_object
*indirect_data
,
140 GLsizeiptr indirect_offset
,
143 struct gl_buffer_object
*indirect_params
,
144 GLsizeiptr indirect_params_offset
,
145 const struct _mesa_index_buffer
*ib
)
147 struct vbo_context
*vbo
= vbo_context(ctx
);
148 struct _mesa_prim
*prim
;
151 prim
= calloc(draw_count
, sizeof(*prim
));
153 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "gl%sDraw%sIndirect%s",
154 (draw_count
> 1) ? "Multi" : "",
155 ib
? "Elements" : "Arrays",
156 indirect_params
? "CountARB" : "");
161 prim
[draw_count
- 1].end
= 1;
162 for (i
= 0; i
< draw_count
; ++i
, indirect_offset
+= stride
) {
164 prim
[i
].indexed
= !!ib
;
165 prim
[i
].indirect_offset
= indirect_offset
;
166 prim
[i
].is_indirect
= 1;
170 vbo
->draw_prims(ctx
, prim
, draw_count
,
173 ctx
->DrawIndirectBuffer
);
179 GLboolean
_vbo_CreateContext( struct gl_context
*ctx
)
181 struct vbo_context
*vbo
= CALLOC_STRUCT(vbo_context
);
183 ctx
->vbo_context
= vbo
;
185 /* Initialize the arrayelt helper
187 if (!ctx
->aelt_context
&&
188 !_ae_create_context( ctx
)) {
192 init_legacy_currval( ctx
);
193 init_generic_currval( ctx
);
194 init_mat_currval( ctx
);
195 vbo_set_indirect_draw_func(ctx
, vbo_draw_indirect_prims
);
197 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
198 * of vertex program active.
203 /* identity mapping */
204 for (i
= 0; i
< ARRAY_SIZE(vbo
->map_vp_none
); i
++)
205 vbo
->map_vp_none
[i
] = i
;
206 /* map material attribs to generic slots */
207 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++)
208 vbo
->map_vp_none
[VERT_ATTRIB_GENERIC(i
)]
209 = VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
;
211 for (i
= 0; i
< ARRAY_SIZE(vbo
->map_vp_arb
); i
++)
212 vbo
->map_vp_arb
[i
] = i
;
216 /* Hook our functions into exec and compile dispatch tables. These
217 * will pretty much be permanently installed, which means that the
218 * vtxfmt mechanism can be removed now.
220 vbo_exec_init( ctx
);
221 if (ctx
->API
== API_OPENGL_COMPAT
)
222 vbo_save_init( ctx
);
230 void _vbo_InvalidateState( struct gl_context
*ctx
, GLbitfield new_state
)
232 vbo_exec_invalidate_state(ctx
, new_state
);
236 void _vbo_DestroyContext( struct gl_context
*ctx
)
238 struct vbo_context
*vbo
= vbo_context(ctx
);
240 if (ctx
->aelt_context
) {
241 _ae_destroy_context( ctx
);
242 ctx
->aelt_context
= NULL
;
248 for (i
= 0; i
< VBO_ATTRIB_MAX
; i
++) {
249 _mesa_reference_buffer_object(ctx
, &vbo
->currval
[i
].BufferObj
, NULL
);
252 vbo_exec_destroy(ctx
);
253 if (ctx
->API
== API_OPENGL_COMPAT
)
254 vbo_save_destroy(ctx
);
256 ctx
->vbo_context
= NULL
;
261 void vbo_set_draw_func(struct gl_context
*ctx
, vbo_draw_func func
)
263 struct vbo_context
*vbo
= vbo_context(ctx
);
264 vbo
->draw_prims
= func
;
268 void vbo_set_indirect_draw_func(struct gl_context
*ctx
,
269 vbo_indirect_draw_func func
)
271 struct vbo_context
*vbo
= vbo_context(ctx
);
272 vbo
->draw_indirect_prims
= func
;