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"
32 #include "vbo_context.h"
34 /* Reach out and grab this to use as the default:
36 extern void _tnl_draw_prims( GLcontext
*ctx
,
37 const struct gl_client_array
*arrays
[],
38 const struct _mesa_prim
*prims
,
40 const struct _mesa_index_buffer
*ib
,
46 #define NR_LEGACY_ATTRIBS 16
47 #define NR_GENERIC_ATTRIBS 16
48 #define NR_MAT_ATTRIBS 12
50 static GLuint
check_size( const GLfloat
*attr
)
52 if (attr
[3] != 1.0) return 4;
53 if (attr
[2] != 0.0) return 3;
54 if (attr
[1] != 0.0) return 2;
58 static void init_legacy_currval(GLcontext
*ctx
)
60 struct vbo_context
*vbo
= vbo_context(ctx
);
61 struct gl_client_array
*arrays
= vbo
->legacy_currval
;
64 memset(arrays
, 0, sizeof(*arrays
) * NR_LEGACY_ATTRIBS
);
66 /* Set up a constant (StrideB == 0) array for each current
69 for (i
= 0; i
< NR_LEGACY_ATTRIBS
; i
++) {
70 struct gl_client_array
*cl
= &arrays
[i
];
72 /* Size will have to be determined at runtime:
74 cl
->Size
= check_size(ctx
->Current
.Attrib
[i
]);
79 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[i
];
80 cl
->BufferObj
= ctx
->Array
.NullBufferObj
;
85 static void init_generic_currval(GLcontext
*ctx
)
87 struct vbo_context
*vbo
= vbo_context(ctx
);
88 struct gl_client_array
*arrays
= vbo
->generic_currval
;
91 memset(arrays
, 0, sizeof(*arrays
) * NR_GENERIC_ATTRIBS
);
93 for (i
= 0; i
< NR_GENERIC_ATTRIBS
; i
++) {
94 struct gl_client_array
*cl
= &arrays
[i
];
96 /* This will have to be determined at runtime:
100 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[VERT_ATTRIB_GENERIC0
+ i
];
104 cl
->BufferObj
= ctx
->Array
.NullBufferObj
;
109 static void init_mat_currval(GLcontext
*ctx
)
111 struct vbo_context
*vbo
= vbo_context(ctx
);
112 struct gl_client_array
*arrays
= vbo
->mat_currval
;
115 ASSERT(NR_MAT_ATTRIBS
== MAT_ATTRIB_MAX
);
117 memset(arrays
, 0, sizeof(*arrays
) * NR_MAT_ATTRIBS
);
119 /* Set up a constant (StrideB == 0) array for each current
122 for (i
= 0; i
< NR_MAT_ATTRIBS
; i
++) {
123 struct gl_client_array
*cl
= &arrays
[i
];
125 /* Size is fixed for the material attributes, for others will
126 * be determined at runtime:
128 switch (i
- VERT_ATTRIB_GENERIC0
) {
129 case MAT_ATTRIB_FRONT_SHININESS
:
130 case MAT_ATTRIB_BACK_SHININESS
:
133 case MAT_ATTRIB_FRONT_INDEXES
:
134 case MAT_ATTRIB_BACK_INDEXES
:
142 cl
->Ptr
= (const void *)ctx
->Light
.Material
.Attrib
[i
];
147 cl
->BufferObj
= ctx
->Array
.NullBufferObj
;
153 static void vbo_exec_current_init( struct vbo_exec_context
*exec
)
155 GLcontext
*ctx
= exec
->ctx
;
158 /* setup the pointers for the typical 16 vertex attributes */
159 for (i
= 0; i
< VBO_ATTRIB_FIRST_MATERIAL
; i
++)
160 exec
->vtx
.current
[i
] = ctx
->Current
.Attrib
[i
];
162 /* setup pointers for the 12 material attributes */
163 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++)
164 exec
->vtx
.current
[VBO_ATTRIB_FIRST_MATERIAL
+ i
] =
165 ctx
->Light
.Material
.Attrib
[i
];
169 GLboolean
_vbo_CreateContext( GLcontext
*ctx
)
171 struct vbo_context
*vbo
= CALLOC_STRUCT(vbo_context
);
173 ctx
->swtnl_im
= (void *)vbo
;
175 /* Initialize the arrayelt helper
177 if (!ctx
->aelt_context
&&
178 !_ae_create_context( ctx
)) {
182 /* TODO: remove these pointers.
184 vbo
->legacy_currval
= &vbo
->currval
[VBO_ATTRIB_POS
];
185 vbo
->generic_currval
= &vbo
->currval
[VBO_ATTRIB_GENERIC0
];
186 vbo
->mat_currval
= &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
];
188 init_legacy_currval( ctx
);
189 init_generic_currval( ctx
);
190 init_mat_currval( ctx
);
192 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
193 * of vertex program active.
198 /* When no vertex program, pull in the material attributes in
199 * the 16..32 generic range.
201 for (i
= 0; i
< 16; i
++)
202 vbo
->map_vp_none
[i
] = i
;
203 for (i
= 0; i
< 12; i
++)
204 vbo
->map_vp_none
[16+i
] = VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
;
205 for (i
= 0; i
< 4; i
++)
206 vbo
->map_vp_none
[28+i
] = i
;
208 for (i
= 0; i
< VERT_ATTRIB_MAX
; i
++)
209 vbo
->map_vp_arb
[i
] = i
;
215 vbo
->draw_prims
= _tnl_draw_prims
;
217 /* Hook our functions into exec and compile dispatch tables. These
218 * will pretty much be permanently installed, which means that the
219 * vtxfmt mechanism can be removed now.
221 vbo_exec_init( ctx
);
222 vbo_save_init( ctx
);
228 void _vbo_InvalidateState( GLcontext
*ctx
, GLuint new_state
)
230 _ae_invalidate_state(ctx
, new_state
);
231 vbo_exec_invalidate_state(ctx
, new_state
);
235 void _vbo_DestroyContext( GLcontext
*ctx
)
237 if (ctx
->aelt_context
) {
238 _ae_destroy_context( ctx
);
239 ctx
->aelt_context
= NULL
;
242 vbo_exec_destroy(ctx
);
243 vbo_save_destroy(ctx
);
244 FREE(vbo_context(ctx
));
245 ctx
->swtnl_im
= NULL
;