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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
26 * Keith Whitwell <keith@tungstengraphics.com>
29 #include "main/imports.h"
30 #include "main/mtypes.h"
31 #include "main/api_arrayelt.h"
32 #include "main/bufferobj.h"
33 #include "math/m_eval.h"
35 #include "vbo_context.h"
37 #define NR_MAT_ATTRIBS 12
39 static GLuint
check_size( const GLfloat
*attr
)
41 if (attr
[3] != 1.0) return 4;
42 if (attr
[2] != 0.0) return 3;
43 if (attr
[1] != 0.0) return 2;
48 static void init_legacy_currval(struct gl_context
*ctx
)
50 struct vbo_context
*vbo
= vbo_context(ctx
);
51 struct gl_client_array
*arrays
= &vbo
->currval
[VBO_ATTRIB_POS
];
54 memset(arrays
, 0, sizeof(*arrays
) * VERT_ATTRIB_FF_MAX
);
56 /* Set up a constant (StrideB == 0) array for each current
59 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
60 struct gl_client_array
*cl
= &arrays
[i
];
62 /* Size will have to be determined at runtime:
64 cl
->Size
= check_size(ctx
->Current
.Attrib
[i
]);
70 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[i
];
71 cl
->_ElementSize
= cl
->Size
* sizeof(GLfloat
);
72 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
73 ctx
->Shared
->NullBufferObj
);
78 static void init_generic_currval(struct gl_context
*ctx
)
80 struct vbo_context
*vbo
= vbo_context(ctx
);
81 struct gl_client_array
*arrays
= &vbo
->currval
[VBO_ATTRIB_GENERIC0
];
84 memset(arrays
, 0, sizeof(*arrays
) * VERT_ATTRIB_GENERIC_MAX
);
86 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
87 struct gl_client_array
*cl
= &arrays
[i
];
89 /* This will have to be determined at runtime:
94 cl
->Ptr
= (const void *)ctx
->Current
.Attrib
[VERT_ATTRIB_GENERIC0
+ i
];
98 cl
->_ElementSize
= cl
->Size
* sizeof(GLfloat
);
99 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
100 ctx
->Shared
->NullBufferObj
);
105 static void init_mat_currval(struct gl_context
*ctx
)
107 struct vbo_context
*vbo
= vbo_context(ctx
);
108 struct gl_client_array
*arrays
=
109 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
];
112 ASSERT(NR_MAT_ATTRIBS
== MAT_ATTRIB_MAX
);
114 memset(arrays
, 0, sizeof(*arrays
) * NR_MAT_ATTRIBS
);
116 /* Set up a constant (StrideB == 0) array for each current
119 for (i
= 0; i
< NR_MAT_ATTRIBS
; i
++) {
120 struct gl_client_array
*cl
= &arrays
[i
];
122 /* Size is fixed for the material attributes, for others will
123 * be determined at runtime:
125 switch (i
- VERT_ATTRIB_GENERIC0
) {
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 cl
->Ptr
= (const void *)ctx
->Light
.Material
.Attrib
[i
];
141 cl
->Format
= GL_RGBA
;
145 cl
->_ElementSize
= cl
->Size
* sizeof(GLfloat
);
146 _mesa_reference_buffer_object(ctx
, &cl
->BufferObj
,
147 ctx
->Shared
->NullBufferObj
);
152 GLboolean
_vbo_CreateContext( struct gl_context
*ctx
)
154 struct vbo_context
*vbo
= CALLOC_STRUCT(vbo_context
);
156 ctx
->swtnl_im
= (void *)vbo
;
158 /* Initialize the arrayelt helper
160 if (!ctx
->aelt_context
&&
161 !_ae_create_context( ctx
)) {
165 init_legacy_currval( ctx
);
166 init_generic_currval( ctx
);
167 init_mat_currval( ctx
);
169 /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
170 * of vertex program active.
175 /* identity mapping */
176 for (i
= 0; i
< Elements(vbo
->map_vp_none
); i
++)
177 vbo
->map_vp_none
[i
] = i
;
178 /* map material attribs to generic slots */
179 for (i
= 0; i
< NR_MAT_ATTRIBS
; i
++)
180 vbo
->map_vp_none
[VERT_ATTRIB_GENERIC(i
)]
181 = VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
;
183 for (i
= 0; i
< Elements(vbo
->map_vp_arb
); i
++)
184 vbo
->map_vp_arb
[i
] = i
;
188 /* Hook our functions into exec and compile dispatch tables. These
189 * will pretty much be permanently installed, which means that the
190 * vtxfmt mechanism can be removed now.
192 vbo_exec_init( ctx
);
193 if (ctx
->API
== API_OPENGL_COMPAT
)
194 vbo_save_init( ctx
);
202 void _vbo_InvalidateState( struct gl_context
*ctx
, GLuint new_state
)
204 vbo_exec_invalidate_state(ctx
, new_state
);
208 void _vbo_DestroyContext( struct gl_context
*ctx
)
210 struct vbo_context
*vbo
= vbo_context(ctx
);
212 if (ctx
->aelt_context
) {
213 _ae_destroy_context( ctx
);
214 ctx
->aelt_context
= NULL
;
220 for (i
= 0; i
< VBO_ATTRIB_MAX
; i
++) {
221 _mesa_reference_buffer_object(ctx
, &vbo
->currval
[i
].BufferObj
, NULL
);
224 vbo_exec_destroy(ctx
);
225 if (ctx
->API
== API_OPENGL_COMPAT
)
226 vbo_save_destroy(ctx
);
228 ctx
->swtnl_im
= NULL
;
233 void vbo_set_draw_func(struct gl_context
*ctx
, vbo_draw_func func
)
235 struct vbo_context
*vbo
= vbo_context(ctx
);
236 vbo
->draw_prims
= func
;