2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 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/glheader.h"
29 #include "main/context.h"
30 #include "main/macros.h"
31 #include "math/m_eval.h"
32 #include "glapi/dispatch.h"
36 static void clear_active_eval1( struct vbo_exec_context
*exec
, GLuint attr
)
38 exec
->eval
.map1
[attr
].map
= NULL
;
41 static void clear_active_eval2( struct vbo_exec_context
*exec
, GLuint attr
)
43 exec
->eval
.map2
[attr
].map
= NULL
;
46 static void set_active_eval1( struct vbo_exec_context
*exec
, GLuint attr
, GLuint dim
,
47 struct gl_1d_map
*map
)
49 if (!exec
->eval
.map1
[attr
].map
) {
50 exec
->eval
.map1
[attr
].map
= map
;
51 exec
->eval
.map1
[attr
].sz
= dim
;
55 static void set_active_eval2( struct vbo_exec_context
*exec
, GLuint attr
, GLuint dim
,
56 struct gl_2d_map
*map
)
58 if (!exec
->eval
.map2
[attr
].map
) {
59 exec
->eval
.map2
[attr
].map
= map
;
60 exec
->eval
.map2
[attr
].sz
= dim
;
64 void vbo_exec_eval_update( struct vbo_exec_context
*exec
)
66 GLcontext
*ctx
= exec
->ctx
;
69 /* Vertex program maps have priority over conventional attribs */
71 for (attr
= 0; attr
< VBO_ATTRIB_FIRST_MATERIAL
; attr
++) {
72 clear_active_eval1( exec
, attr
);
73 clear_active_eval2( exec
, attr
);
77 if (ctx
->VertexProgram
._Enabled
) {
78 for (attr
= 0; attr
< VBO_ATTRIB_FIRST_MATERIAL
; attr
++) {
80 if (ctx
->Eval
.Map1Attrib
[attr
])
81 set_active_eval1( exec
, attr
, 4, &ctx
->EvalMap
.Map1Attrib
[attr
] );
83 if (ctx
->Eval
.Map2Attrib
[attr
])
84 set_active_eval2( exec
, attr
, 4, &ctx
->EvalMap
.Map2Attrib
[attr
] );
88 if (ctx
->Eval
.Map1Color4
)
89 set_active_eval1( exec
, VBO_ATTRIB_COLOR0
, 4, &ctx
->EvalMap
.Map1Color4
);
91 if (ctx
->Eval
.Map2Color4
)
92 set_active_eval2( exec
, VBO_ATTRIB_COLOR0
, 4, &ctx
->EvalMap
.Map2Color4
);
94 if (ctx
->Eval
.Map1TextureCoord4
)
95 set_active_eval1( exec
, VBO_ATTRIB_TEX0
, 4, &ctx
->EvalMap
.Map1Texture4
);
96 else if (ctx
->Eval
.Map1TextureCoord3
)
97 set_active_eval1( exec
, VBO_ATTRIB_TEX0
, 3, &ctx
->EvalMap
.Map1Texture3
);
98 else if (ctx
->Eval
.Map1TextureCoord2
)
99 set_active_eval1( exec
, VBO_ATTRIB_TEX0
, 2, &ctx
->EvalMap
.Map1Texture2
);
100 else if (ctx
->Eval
.Map1TextureCoord1
)
101 set_active_eval1( exec
, VBO_ATTRIB_TEX0
, 1, &ctx
->EvalMap
.Map1Texture1
);
103 if (ctx
->Eval
.Map2TextureCoord4
)
104 set_active_eval2( exec
, VBO_ATTRIB_TEX0
, 4, &ctx
->EvalMap
.Map2Texture4
);
105 else if (ctx
->Eval
.Map2TextureCoord3
)
106 set_active_eval2( exec
, VBO_ATTRIB_TEX0
, 3, &ctx
->EvalMap
.Map2Texture3
);
107 else if (ctx
->Eval
.Map2TextureCoord2
)
108 set_active_eval2( exec
, VBO_ATTRIB_TEX0
, 2, &ctx
->EvalMap
.Map2Texture2
);
109 else if (ctx
->Eval
.Map2TextureCoord1
)
110 set_active_eval2( exec
, VBO_ATTRIB_TEX0
, 1, &ctx
->EvalMap
.Map2Texture1
);
112 if (ctx
->Eval
.Map1Normal
)
113 set_active_eval1( exec
, VBO_ATTRIB_NORMAL
, 3, &ctx
->EvalMap
.Map1Normal
);
115 if (ctx
->Eval
.Map2Normal
)
116 set_active_eval2( exec
, VBO_ATTRIB_NORMAL
, 3, &ctx
->EvalMap
.Map2Normal
);
118 if (ctx
->Eval
.Map1Vertex4
)
119 set_active_eval1( exec
, VBO_ATTRIB_POS
, 4, &ctx
->EvalMap
.Map1Vertex4
);
120 else if (ctx
->Eval
.Map1Vertex3
)
121 set_active_eval1( exec
, VBO_ATTRIB_POS
, 3, &ctx
->EvalMap
.Map1Vertex3
);
123 if (ctx
->Eval
.Map2Vertex4
)
124 set_active_eval2( exec
, VBO_ATTRIB_POS
, 4, &ctx
->EvalMap
.Map2Vertex4
);
125 else if (ctx
->Eval
.Map2Vertex3
)
126 set_active_eval2( exec
, VBO_ATTRIB_POS
, 3, &ctx
->EvalMap
.Map2Vertex3
);
128 exec
->eval
.recalculate_maps
= 0;
133 void vbo_exec_do_EvalCoord1f(struct vbo_exec_context
*exec
, GLfloat u
)
137 for (attr
= 1; attr
<= VBO_ATTRIB_TEX7
; attr
++) {
138 struct gl_1d_map
*map
= exec
->eval
.map1
[attr
].map
;
140 GLfloat uu
= (u
- map
->u1
) * map
->du
;
143 ASSIGN_4V(data
, 0, 0, 0, 1);
145 _math_horner_bezier_curve(map
->Points
, data
, uu
,
146 exec
->eval
.map1
[attr
].sz
,
149 COPY_SZ_4V( exec
->vtx
.attrptr
[attr
],
150 exec
->vtx
.attrsz
[attr
],
155 /** Vertex -- EvalCoord1f is a noop if this map not enabled:
157 if (exec
->eval
.map1
[0].map
) {
158 struct gl_1d_map
*map
= exec
->eval
.map1
[0].map
;
159 GLfloat uu
= (u
- map
->u1
) * map
->du
;
162 ASSIGN_4V(vertex
, 0, 0, 0, 1);
164 _math_horner_bezier_curve(map
->Points
, vertex
, uu
,
165 exec
->eval
.map1
[0].sz
,
168 if (exec
->eval
.map1
[0].sz
== 4)
169 CALL_Vertex4fv(GET_DISPATCH(), ( vertex
));
171 CALL_Vertex3fv(GET_DISPATCH(), ( vertex
));
177 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context
*exec
,
178 GLfloat u
, GLfloat v
)
182 for (attr
= 1; attr
<= VBO_ATTRIB_TEX7
; attr
++) {
183 struct gl_2d_map
*map
= exec
->eval
.map2
[attr
].map
;
185 GLfloat uu
= (u
- map
->u1
) * map
->du
;
186 GLfloat vv
= (v
- map
->v1
) * map
->dv
;
189 ASSIGN_4V(data
, 0, 0, 0, 1);
191 _math_horner_bezier_surf(map
->Points
,
194 exec
->eval
.map2
[attr
].sz
,
195 map
->Uorder
, map
->Vorder
);
197 COPY_SZ_4V( exec
->vtx
.attrptr
[attr
],
198 exec
->vtx
.attrsz
[attr
],
203 /** Vertex -- EvalCoord2f is a noop if this map not enabled:
205 if (exec
->eval
.map2
[0].map
) {
206 struct gl_2d_map
*map
= exec
->eval
.map2
[0].map
;
207 GLfloat uu
= (u
- map
->u1
) * map
->du
;
208 GLfloat vv
= (v
- map
->v1
) * map
->dv
;
211 ASSIGN_4V(vertex
, 0, 0, 0, 1);
213 if (exec
->ctx
->Eval
.AutoNormal
) {
215 GLfloat du
[4], dv
[4];
217 _math_de_casteljau_surf(map
->Points
, vertex
, du
, dv
, uu
, vv
,
218 exec
->eval
.map2
[0].sz
,
219 map
->Uorder
, map
->Vorder
);
221 if (exec
->eval
.map2
[0].sz
== 4) {
222 du
[0] = du
[0]*vertex
[3] - du
[3]*vertex
[0];
223 du
[1] = du
[1]*vertex
[3] - du
[3]*vertex
[1];
224 du
[2] = du
[2]*vertex
[3] - du
[3]*vertex
[2];
226 dv
[0] = dv
[0]*vertex
[3] - dv
[3]*vertex
[0];
227 dv
[1] = dv
[1]*vertex
[3] - dv
[3]*vertex
[1];
228 dv
[2] = dv
[2]*vertex
[3] - dv
[3]*vertex
[2];
232 CROSS3(normal
, du
, dv
);
233 NORMALIZE_3FV(normal
);
236 COPY_SZ_4V( exec
->vtx
.attrptr
[VBO_ATTRIB_NORMAL
],
237 exec
->vtx
.attrsz
[VBO_ATTRIB_NORMAL
],
242 _math_horner_bezier_surf(map
->Points
, vertex
, uu
, vv
,
243 exec
->eval
.map2
[0].sz
,
244 map
->Uorder
, map
->Vorder
);
247 if (exec
->vtx
.attrsz
[0] == 4)
248 CALL_Vertex4fv(GET_DISPATCH(), ( vertex
));
250 CALL_Vertex3fv(GET_DISPATCH(), ( vertex
));