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>
32 #include "math/m_eval.h"
37 static void clear_active_eval1( struct brw_exec_context
*exec
, GLuint attr
)
39 exec
->eval
.map1
[attr
].map
= NULL
;
42 static void clear_active_eval2( struct brw_exec_context
*exec
, GLuint attr
)
44 exec
->eval
.map2
[attr
].map
= NULL
;
47 static void set_active_eval1( struct brw_exec_context
*exec
, GLuint attr
, GLuint dim
,
48 struct gl_1d_map
*map
)
50 if (!exec
->eval
.map1
[attr
].map
) {
51 exec
->eval
.map1
[attr
].map
= map
;
52 exec
->eval
.map1
[attr
].sz
= dim
;
56 static void set_active_eval2( struct brw_exec_context
*exec
, GLuint attr
, GLuint dim
,
57 struct gl_2d_map
*map
)
59 if (!exec
->eval
.map2
[attr
].map
) {
60 exec
->eval
.map2
[attr
].map
= map
;
61 exec
->eval
.map2
[attr
].sz
= dim
;
65 void brw_exec_eval_update( struct brw_exec_context
*exec
)
67 GLcontext
*ctx
= exec
->ctx
;
70 /* Vertex program maps have priority over conventional attribs */
72 for (attr
= 0; attr
< BRW_ATTRIB_FIRST_MATERIAL
; attr
++) {
73 clear_active_eval1( exec
, attr
);
74 clear_active_eval2( exec
, attr
);
78 if (ctx
->VertexProgram
._Enabled
) {
79 for (attr
= 0; attr
< BRW_ATTRIB_FIRST_MATERIAL
; attr
++) {
81 if (ctx
->Eval
.Map1Attrib
[attr
])
82 set_active_eval1( exec
, attr
, 4, &ctx
->EvalMap
.Map1Attrib
[attr
] );
84 if (ctx
->Eval
.Map2Attrib
[attr
])
85 set_active_eval2( exec
, attr
, 4, &ctx
->EvalMap
.Map2Attrib
[attr
] );
89 if (ctx
->Eval
.Map1Color4
)
90 set_active_eval1( exec
, VERT_ATTRIB_COLOR0
, 4, &ctx
->EvalMap
.Map1Color4
);
92 if (ctx
->Eval
.Map2Color4
)
93 set_active_eval2( exec
, VERT_ATTRIB_COLOR0
, 4, &ctx
->EvalMap
.Map2Color4
);
95 if (ctx
->Eval
.Map1TextureCoord4
)
96 set_active_eval1( exec
, VERT_ATTRIB_TEX0
, 4, &ctx
->EvalMap
.Map1Texture4
);
97 else if (ctx
->Eval
.Map1TextureCoord3
)
98 set_active_eval1( exec
, VERT_ATTRIB_TEX0
, 3, &ctx
->EvalMap
.Map1Texture3
);
99 else if (ctx
->Eval
.Map1TextureCoord2
)
100 set_active_eval1( exec
, VERT_ATTRIB_TEX0
, 2, &ctx
->EvalMap
.Map1Texture2
);
101 else if (ctx
->Eval
.Map1TextureCoord1
)
102 set_active_eval1( exec
, VERT_ATTRIB_TEX0
, 1, &ctx
->EvalMap
.Map1Texture1
);
104 if (ctx
->Eval
.Map2TextureCoord4
)
105 set_active_eval2( exec
, VERT_ATTRIB_TEX0
, 4, &ctx
->EvalMap
.Map2Texture4
);
106 else if (ctx
->Eval
.Map2TextureCoord3
)
107 set_active_eval2( exec
, VERT_ATTRIB_TEX0
, 3, &ctx
->EvalMap
.Map2Texture3
);
108 else if (ctx
->Eval
.Map2TextureCoord2
)
109 set_active_eval2( exec
, VERT_ATTRIB_TEX0
, 2, &ctx
->EvalMap
.Map2Texture2
);
110 else if (ctx
->Eval
.Map2TextureCoord1
)
111 set_active_eval2( exec
, VERT_ATTRIB_TEX0
, 1, &ctx
->EvalMap
.Map2Texture1
);
113 if (ctx
->Eval
.Map1Normal
)
114 set_active_eval1( exec
, VERT_ATTRIB_NORMAL
, 3, &ctx
->EvalMap
.Map1Normal
);
116 if (ctx
->Eval
.Map2Normal
)
117 set_active_eval2( exec
, VERT_ATTRIB_NORMAL
, 3, &ctx
->EvalMap
.Map2Normal
);
119 if (ctx
->Eval
.Map1Vertex4
)
120 set_active_eval1( exec
, VERT_ATTRIB_POS
, 4, &ctx
->EvalMap
.Map1Vertex4
);
121 else if (ctx
->Eval
.Map1Vertex3
)
122 set_active_eval1( exec
, VERT_ATTRIB_POS
, 3, &ctx
->EvalMap
.Map1Vertex3
);
124 if (ctx
->Eval
.Map2Vertex4
)
125 set_active_eval2( exec
, VERT_ATTRIB_POS
, 4, &ctx
->EvalMap
.Map2Vertex4
);
126 else if (ctx
->Eval
.Map2Vertex3
)
127 set_active_eval2( exec
, VERT_ATTRIB_POS
, 3, &ctx
->EvalMap
.Map2Vertex3
);
129 exec
->eval
.recalculate_maps
= 0;
134 void brw_exec_do_EvalCoord1f(struct brw_exec_context
*exec
, GLfloat u
)
138 for (attr
= 1; attr
<= BRW_ATTRIB_INDEX
; attr
++) {
139 struct gl_1d_map
*map
= exec
->eval
.map1
[attr
].map
;
141 GLfloat uu
= (u
- map
->u1
) * map
->du
;
144 ASSIGN_4V(data
, 0, 0, 0, 1);
146 _math_horner_bezier_curve(map
->Points
, data
, uu
,
147 exec
->eval
.map1
[attr
].sz
,
150 COPY_SZ_4V( exec
->vtx
.attrptr
[attr
],
151 exec
->vtx
.attrsz
[attr
],
156 /** Vertex -- EvalCoord1f is a noop if this map not enabled:
158 if (exec
->eval
.map1
[0].map
) {
159 struct gl_1d_map
*map
= exec
->eval
.map1
[0].map
;
160 GLfloat uu
= (u
- map
->u1
) * map
->du
;
163 ASSIGN_4V(vertex
, 0, 0, 0, 1);
165 _math_horner_bezier_curve(map
->Points
, vertex
, uu
,
166 exec
->eval
.map1
[0].sz
,
169 if (exec
->eval
.map1
[0].sz
== 4)
170 CALL_Vertex4fv(GET_DISPATCH(), ( vertex
));
172 CALL_Vertex3fv(GET_DISPATCH(), ( vertex
));
178 void brw_exec_do_EvalCoord2f( struct brw_exec_context
*exec
,
179 GLfloat u
, GLfloat v
)
183 for (attr
= 1; attr
<= BRW_ATTRIB_INDEX
; attr
++) {
184 struct gl_2d_map
*map
= exec
->eval
.map2
[attr
].map
;
186 GLfloat uu
= (u
- map
->u1
) * map
->du
;
187 GLfloat vv
= (v
- map
->v1
) * map
->dv
;
190 ASSIGN_4V(data
, 0, 0, 0, 1);
192 _math_horner_bezier_surf(map
->Points
,
195 exec
->eval
.map2
[attr
].sz
,
196 map
->Uorder
, map
->Vorder
);
198 COPY_SZ_4V( exec
->vtx
.attrptr
[attr
],
199 exec
->vtx
.attrsz
[attr
],
204 /** Vertex -- EvalCoord2f is a noop if this map not enabled:
206 if (exec
->eval
.map2
[0].map
) {
207 struct gl_2d_map
*map
= exec
->eval
.map2
[0].map
;
208 GLfloat uu
= (u
- map
->u1
) * map
->du
;
209 GLfloat vv
= (v
- map
->v1
) * map
->dv
;
212 ASSIGN_4V(vertex
, 0, 0, 0, 1);
214 if (exec
->ctx
->Eval
.AutoNormal
) {
216 GLfloat du
[4], dv
[4];
218 _math_de_casteljau_surf(map
->Points
, vertex
, du
, dv
, uu
, vv
,
219 exec
->eval
.map2
[0].sz
,
220 map
->Uorder
, map
->Vorder
);
222 if (exec
->eval
.map2
[0].sz
== 4) {
223 du
[0] = du
[0]*vertex
[3] - du
[3]*vertex
[0];
224 du
[1] = du
[1]*vertex
[3] - du
[3]*vertex
[1];
225 du
[2] = du
[2]*vertex
[3] - du
[3]*vertex
[2];
227 dv
[0] = dv
[0]*vertex
[3] - dv
[3]*vertex
[0];
228 dv
[1] = dv
[1]*vertex
[3] - dv
[3]*vertex
[1];
229 dv
[2] = dv
[2]*vertex
[3] - dv
[3]*vertex
[2];
233 CROSS3(normal
, du
, dv
);
234 NORMALIZE_3FV(normal
);
237 COPY_SZ_4V( exec
->vtx
.attrptr
[BRW_ATTRIB_NORMAL
],
238 exec
->vtx
.attrsz
[BRW_ATTRIB_NORMAL
],
243 _math_horner_bezier_surf(map
->Points
, vertex
, uu
, vv
,
244 exec
->eval
.map2
[0].sz
,
245 map
->Uorder
, map
->Vorder
);
248 if (exec
->vtx
.attrsz
[0] == 4)
249 CALL_Vertex4fv(GET_DISPATCH(), ( vertex
));
251 CALL_Vertex3fv(GET_DISPATCH(), ( vertex
));