2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.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 /* Reach out and grab this to use as the default:
39 extern void _tnl_draw_prims( GLcontext
*ctx
,
40 const struct gl_client_array
*arrays
[],
41 const struct _mesa_prim
*prims
,
43 const struct _mesa_index_buffer
*ib
,
50 #define NR_LEGACY_ATTRIBS 16
51 #define NR_GENERIC_ATTRIBS 16
52 #define NR_MAT_ATTRIBS 12
54 static GLuint
check_size( const GLfloat
*attr
)
56 if (attr
[3] != 1.0) return 4;
57 if (attr
[2] != 0.0) return 3;
58 if (attr
[1] != 0.0) return 2;
62 static void init_legacy_currval(GLcontext
*ctx
)
64 struct vbo_context
*vbo
= vbo_context(ctx
);
65 struct gl_client_array
*arrays
= vbo
->legacy_currval
;
68 memset(arrays
, 0, sizeof(*arrays
) * NR_LEGACY_ATTRIBS
);
70 /* Set up a constant (StrideB == 0) array for each current
73 for (i
= 0; i
< NR_LEGACY_ATTRIBS
; i
++) {
74 struct gl_client_array
*cl
= &arrays
[i
];
76 /* Size will have to be determined at runtime:
78 cl
->Size
= check_size(ctx
->Current
.Attrib
[i
]);
84 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[i
];
85 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
86 ctx
->Shared
->NullBufferObj
);
91 static void init_generic_currval(GLcontext
*ctx
)
93 struct vbo_context
*vbo
= vbo_context(ctx
);
94 struct gl_client_array
*arrays
= vbo
->generic_currval
;
97 memset(arrays
, 0, sizeof(*arrays
) * NR_GENERIC_ATTRIBS
);
99 for (i
= 0; i
< NR_GENERIC_ATTRIBS
; i
++) {
100 struct gl_client_array
*cl
= &arrays
[i
];
102 /* This will have to be determined at runtime:
106 cl
->Format
= GL_RGBA
;
107 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[VERT_ATTRIB_GENERIC0
+ i
];
111 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
112 ctx
->Shared
->NullBufferObj
);
117 static void init_mat_currval(GLcontext
*ctx
)
119 struct vbo_context
*vbo
= vbo_context(ctx
);
120 struct gl_client_array
*arrays
= vbo
->mat_currval
;
123 ASSERT(NR_MAT_ATTRIBS
== MAT_ATTRIB_MAX
);
125 memset(arrays
, 0, sizeof(*arrays
) * NR_MAT_ATTRIBS
);
127 /* Set up a constant (StrideB == 0) array for each current
130 for (i
= 0; i
< NR_MAT_ATTRIBS
; i
++) {
131 struct gl_client_array
*cl
= &arrays
[i
];
133 /* Size is fixed for the material attributes, for others will
134 * be determined at runtime:
136 switch (i
- VERT_ATTRIB_GENERIC0
) {
137 case MAT_ATTRIB_FRONT_SHININESS
:
138 case MAT_ATTRIB_BACK_SHININESS
:
141 case MAT_ATTRIB_FRONT_INDEXES
:
142 case MAT_ATTRIB_BACK_INDEXES
:
150 cl
->Ptr
= (const void *)ctx
->Light
.Material
.Attrib
[i
];
152 cl
->Format
= GL_RGBA
;
156 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
157 ctx
->Shared
->NullBufferObj
);
163 static void vbo_exec_current_init( struct vbo_exec_context
*exec
)
165 GLcontext
*ctx
= exec
->ctx
;
168 /* setup the pointers for the typical 16 vertex attributes */
169 for (i
= 0; i
< VBO_ATTRIB_FIRST_MATERIAL
; i
++)
170 exec
->vtx
.current
[i
] = ctx
->Current
.Attrib
[i
];
172 /* setup pointers for the 12 material attributes */
173 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++)
174 exec
->vtx
.current
[VBO_ATTRIB_FIRST_MATERIAL
+ i
] =
175 ctx
->Light
.Material
.Attrib
[i
];
179 GLboolean
_vbo_CreateContext( GLcontext
*ctx
)
181 struct vbo_context
*vbo
= CALLOC_STRUCT(vbo_context
);
183 ctx
->swtnl_im
= (void *)vbo
;
185 /* Initialize the arrayelt helper
187 if (!ctx
->aelt_context
&&
188 !_ae_create_context( ctx
)) {
192 /* TODO: remove these pointers.
194 vbo
->legacy_currval
= &vbo
->currval
[VBO_ATTRIB_POS
];
195 vbo
->generic_currval
= &vbo
->currval
[VBO_ATTRIB_GENERIC0
];
196 vbo
->mat_currval
= &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
];
198 init_legacy_currval( ctx
);
199 init_generic_currval( ctx
);
200 init_mat_currval( ctx
);
202 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
203 * of vertex program active.
208 /* When no vertex program, pull in the material attributes in
209 * the 16..32 generic range.
211 for (i
= 0; i
< 16; i
++)
212 vbo
->map_vp_none
[i
] = i
;
213 for (i
= 0; i
< 12; i
++)
214 vbo
->map_vp_none
[16+i
] = VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
;
215 for (i
= 0; i
< 4; i
++)
216 vbo
->map_vp_none
[28+i
] = i
;
218 for (i
= 0; i
< Elements(vbo
->map_vp_arb
); i
++)
219 vbo
->map_vp_arb
[i
] = i
;
225 #if 0 /* dead - see vbo_set_draw_func() */
226 vbo
->draw_prims
= _tnl_draw_prims
;
229 /* Hook our functions into exec and compile dispatch tables. These
230 * will pretty much be permanently installed, which means that the
231 * vtxfmt mechanism can be removed now.
233 vbo_exec_init( ctx
);
235 vbo_save_init( ctx
);
243 void _vbo_InvalidateState( GLcontext
*ctx
, GLuint new_state
)
245 _ae_invalidate_state(ctx
, new_state
);
246 vbo_exec_invalidate_state(ctx
, new_state
);
250 void _vbo_DestroyContext( GLcontext
*ctx
)
252 struct vbo_context
*vbo
= vbo_context(ctx
);
254 if (ctx
->aelt_context
) {
255 _ae_destroy_context( ctx
);
256 ctx
->aelt_context
= NULL
;
262 for (i
= 0; i
< VBO_ATTRIB_MAX
; i
++) {
263 _mesa_reference_buffer_object(ctx
, &vbo
->currval
[i
].BufferObj
, NULL
);
266 vbo_exec_destroy(ctx
);
268 vbo_save_destroy(ctx
);
271 ctx
->swtnl_im
= NULL
;
276 void vbo_set_draw_func(GLcontext
*ctx
, vbo_draw_func func
)
278 struct vbo_context
*vbo
= vbo_context(ctx
);
279 vbo
->draw_prims
= func
;