1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Keith Whitwell <keithw@vmware.com>
26 */
27
28 #include "main/glheader.h"
29 #include "main/context.h"
30 #include "main/macros.h"
31 #include "math/m_eval.h"
32 #include "main/dispatch.h"
33 #include "vbo_exec.h"
34 #include "vbo_private.h"
35
36
clear_active_eval1(struct vbo_exec_context * exec,GLuint attr)37 static void clear_active_eval1( struct vbo_exec_context *exec, GLuint attr )
38 {
39 assert(attr < ARRAY_SIZE(exec->eval.map1));
40 exec->eval.map1[attr].map = NULL;
41 }
42
clear_active_eval2(struct vbo_exec_context * exec,GLuint attr)43 static void clear_active_eval2( struct vbo_exec_context *exec, GLuint attr )
44 {
45 assert(attr < ARRAY_SIZE(exec->eval.map2));
46 exec->eval.map2[attr].map = NULL;
47 }
48
set_active_eval1(struct vbo_exec_context * exec,GLuint attr,GLuint dim,struct gl_1d_map * map)49 static void set_active_eval1( struct vbo_exec_context *exec, GLuint attr, GLuint dim,
50 struct gl_1d_map *map )
51 {
52 assert(attr < ARRAY_SIZE(exec->eval.map1));
53 if (!exec->eval.map1[attr].map) {
54 exec->eval.map1[attr].map = map;
55 exec->eval.map1[attr].sz = dim;
56 }
57 }
58
set_active_eval2(struct vbo_exec_context * exec,GLuint attr,GLuint dim,struct gl_2d_map * map)59 static void set_active_eval2( struct vbo_exec_context *exec, GLuint attr, GLuint dim,
60 struct gl_2d_map *map )
61 {
62 assert(attr < ARRAY_SIZE(exec->eval.map2));
63 if (!exec->eval.map2[attr].map) {
64 exec->eval.map2[attr].map = map;
65 exec->eval.map2[attr].sz = dim;
66 }
67 }
68
vbo_exec_eval_update(struct vbo_exec_context * exec)69 void vbo_exec_eval_update( struct vbo_exec_context *exec )
70 {
71 struct gl_context *ctx = gl_context_from_vbo_exec(exec);
72 GLuint attr;
73
74 /* Vertex program maps have priority over conventional attribs */
75
76 for (attr = 0; attr < VBO_ATTRIB_FIRST_MATERIAL; attr++) {
77 clear_active_eval1( exec, attr );
78 clear_active_eval2( exec, attr );
79 }
80
81 if (ctx->Eval.Map1Color4)
82 set_active_eval1( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map1Color4 );
83
84 if (ctx->Eval.Map2Color4)
85 set_active_eval2( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map2Color4 );
86
87 if (ctx->Eval.Map1TextureCoord4)
88 set_active_eval1( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map1Texture4 );
89 else if (ctx->Eval.Map1TextureCoord3)
90 set_active_eval1( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map1Texture3 );
91 else if (ctx->Eval.Map1TextureCoord2)
92 set_active_eval1( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map1Texture2 );
93 else if (ctx->Eval.Map1TextureCoord1)
94 set_active_eval1( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map1Texture1 );
95
96 if (ctx->Eval.Map2TextureCoord4)
97 set_active_eval2( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map2Texture4 );
98 else if (ctx->Eval.Map2TextureCoord3)
99 set_active_eval2( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map2Texture3 );
100 else if (ctx->Eval.Map2TextureCoord2)
101 set_active_eval2( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map2Texture2 );
102 else if (ctx->Eval.Map2TextureCoord1)
103 set_active_eval2( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map2Texture1 );
104
105 if (ctx->Eval.Map1Normal)
106 set_active_eval1( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map1Normal );
107
108 if (ctx->Eval.Map2Normal)
109 set_active_eval2( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map2Normal );
110
111 if (ctx->Eval.Map1Vertex4)
112 set_active_eval1( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map1Vertex4 );
113 else if (ctx->Eval.Map1Vertex3)
114 set_active_eval1( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map1Vertex3 );
115
116 if (ctx->Eval.Map2Vertex4)
117 set_active_eval2( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map2Vertex4 );
118 else if (ctx->Eval.Map2Vertex3)
119 set_active_eval2( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map2Vertex3 );
120
121 exec->eval.recalculate_maps = GL_FALSE;
122 }
123
124
125
vbo_exec_do_EvalCoord1f(struct vbo_exec_context * exec,GLfloat u)126 void vbo_exec_do_EvalCoord1f(struct vbo_exec_context *exec, GLfloat u)
127 {
128 struct gl_context *ctx = gl_context_from_vbo_exec(exec);
129 GLuint attr;
130
131 for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) {
132 struct gl_1d_map *map = exec->eval.map1[attr].map;
133 if (map) {
134 GLfloat uu = (u - map->u1) * map->du;
135 fi_type data[4];
136
137 ASSIGN_4V(data, FLOAT_AS_UNION(0), FLOAT_AS_UNION(0),
138 FLOAT_AS_UNION(0), FLOAT_AS_UNION(1));
139
140 _math_horner_bezier_curve(map->Points, &data[0].f, uu,
141 exec->eval.map1[attr].sz,
142 map->Order);
143
144 COPY_SZ_4V( exec->vtx.attrptr[attr],
145 exec->vtx.attr[attr].size,
146 data );
147 }
148 }
149
150 /** Vertex -- EvalCoord1f is a noop if this map not enabled:
151 **/
152 if (exec->eval.map1[0].map) {
153 struct gl_1d_map *map = exec->eval.map1[0].map;
154 GLfloat uu = (u - map->u1) * map->du;
155 GLfloat vertex[4];
156
157 ASSIGN_4V(vertex, 0, 0, 0, 1);
158
159 _math_horner_bezier_curve(map->Points, vertex, uu,
160 exec->eval.map1[0].sz,
161 map->Order);
162
163 if (exec->eval.map1[0].sz == 4)
164 CALL_Vertex4fv(ctx->CurrentServerDispatch, ( vertex ));
165 else
166 CALL_Vertex3fv(ctx->CurrentServerDispatch, ( vertex ));
167 }
168 }
169
170
171
vbo_exec_do_EvalCoord2f(struct vbo_exec_context * exec,GLfloat u,GLfloat v)172 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
173 GLfloat u, GLfloat v )
174 {
175 struct gl_context *ctx = gl_context_from_vbo_exec(exec);
176 GLuint attr;
177
178 for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) {
179 struct gl_2d_map *map = exec->eval.map2[attr].map;
180 if (map) {
181 GLfloat uu = (u - map->u1) * map->du;
182 GLfloat vv = (v - map->v1) * map->dv;
183 fi_type data[4];
184
185 ASSIGN_4V(data, FLOAT_AS_UNION(0), FLOAT_AS_UNION(0),
186 FLOAT_AS_UNION(0), FLOAT_AS_UNION(1));
187
188 _math_horner_bezier_surf(map->Points,
189 &data[0].f,
190 uu, vv,
191 exec->eval.map2[attr].sz,
192 map->Uorder, map->Vorder);
193
194 COPY_SZ_4V( exec->vtx.attrptr[attr],
195 exec->vtx.attr[attr].size,
196 data );
197 }
198 }
199
200 /** Vertex -- EvalCoord2f is a noop if this map not enabled:
201 **/
202 if (exec->eval.map2[0].map) {
203 struct gl_2d_map *map = exec->eval.map2[0].map;
204 GLfloat uu = (u - map->u1) * map->du;
205 GLfloat vv = (v - map->v1) * map->dv;
206 GLfloat vertex[4];
207
208 ASSIGN_4V(vertex, 0, 0, 0, 1);
209
210 if (ctx->Eval.AutoNormal) {
211 fi_type normal[4];
212 GLfloat du[4], dv[4];
213
214 _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv,
215 exec->eval.map2[0].sz,
216 map->Uorder, map->Vorder);
217
218 if (exec->eval.map2[0].sz == 4) {
219 du[0] = du[0]*vertex[3] - du[3]*vertex[0];
220 du[1] = du[1]*vertex[3] - du[3]*vertex[1];
221 du[2] = du[2]*vertex[3] - du[3]*vertex[2];
222
223 dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0];
224 dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1];
225 dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2];
226 }
227
228
229 CROSS3(&normal[0].f, du, dv);
230 NORMALIZE_3FV(&normal[0].f);
231 normal[3] = FLOAT_AS_UNION(1.0);
232
233 COPY_SZ_4V( exec->vtx.attrptr[VBO_ATTRIB_NORMAL],
234 exec->vtx.attr[VBO_ATTRIB_NORMAL].size,
235 normal );
236
237 }
238 else {
239 _math_horner_bezier_surf(map->Points, vertex, uu, vv,
240 exec->eval.map2[0].sz,
241 map->Uorder, map->Vorder);
242 }
243
244 if (exec->vtx.attr[VBO_ATTRIB_POS].size == 4)
245 CALL_Vertex4fv(ctx->CurrentServerDispatch, ( vertex ));
246 else
247 CALL_Vertex3fv(ctx->CurrentServerDispatch, ( vertex ));
248 }
249 }
250
251
252