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
35
clear_active_eval1(struct vbo_exec_context * exec,GLuint attr)36 static void clear_active_eval1( struct vbo_exec_context *exec, GLuint attr )
37 {
38 assert(attr < ARRAY_SIZE(exec->eval.map1));
39 exec->eval.map1[attr].map = NULL;
40 }
41
clear_active_eval2(struct vbo_exec_context * exec,GLuint attr)42 static void clear_active_eval2( struct vbo_exec_context *exec, GLuint attr )
43 {
44 assert(attr < ARRAY_SIZE(exec->eval.map2));
45 exec->eval.map2[attr].map = NULL;
46 }
47
set_active_eval1(struct vbo_exec_context * exec,GLuint attr,GLuint dim,struct gl_1d_map * map)48 static void set_active_eval1( struct vbo_exec_context *exec, GLuint attr, GLuint dim,
49 struct gl_1d_map *map )
50 {
51 assert(attr < ARRAY_SIZE(exec->eval.map1));
52 if (!exec->eval.map1[attr].map) {
53 exec->eval.map1[attr].map = map;
54 exec->eval.map1[attr].sz = dim;
55 }
56 }
57
set_active_eval2(struct vbo_exec_context * exec,GLuint attr,GLuint dim,struct gl_2d_map * map)58 static void set_active_eval2( struct vbo_exec_context *exec, GLuint attr, GLuint dim,
59 struct gl_2d_map *map )
60 {
61 assert(attr < ARRAY_SIZE(exec->eval.map2));
62 if (!exec->eval.map2[attr].map) {
63 exec->eval.map2[attr].map = map;
64 exec->eval.map2[attr].sz = dim;
65 }
66 }
67
vbo_exec_eval_update(struct vbo_exec_context * exec)68 void vbo_exec_eval_update( struct vbo_exec_context *exec )
69 {
70 struct gl_context *ctx = exec->ctx;
71 GLuint attr;
72
73 /* Vertex program maps have priority over conventional attribs */
74
75 for (attr = 0; attr < VBO_ATTRIB_FIRST_MATERIAL; attr++) {
76 clear_active_eval1( exec, attr );
77 clear_active_eval2( exec, attr );
78 }
79
80 if (ctx->Eval.Map1Color4)
81 set_active_eval1( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map1Color4 );
82
83 if (ctx->Eval.Map2Color4)
84 set_active_eval2( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map2Color4 );
85
86 if (ctx->Eval.Map1TextureCoord4)
87 set_active_eval1( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map1Texture4 );
88 else if (ctx->Eval.Map1TextureCoord3)
89 set_active_eval1( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map1Texture3 );
90 else if (ctx->Eval.Map1TextureCoord2)
91 set_active_eval1( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map1Texture2 );
92 else if (ctx->Eval.Map1TextureCoord1)
93 set_active_eval1( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map1Texture1 );
94
95 if (ctx->Eval.Map2TextureCoord4)
96 set_active_eval2( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map2Texture4 );
97 else if (ctx->Eval.Map2TextureCoord3)
98 set_active_eval2( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map2Texture3 );
99 else if (ctx->Eval.Map2TextureCoord2)
100 set_active_eval2( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map2Texture2 );
101 else if (ctx->Eval.Map2TextureCoord1)
102 set_active_eval2( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map2Texture1 );
103
104 if (ctx->Eval.Map1Normal)
105 set_active_eval1( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map1Normal );
106
107 if (ctx->Eval.Map2Normal)
108 set_active_eval2( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map2Normal );
109
110 if (ctx->Eval.Map1Vertex4)
111 set_active_eval1( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map1Vertex4 );
112 else if (ctx->Eval.Map1Vertex3)
113 set_active_eval1( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map1Vertex3 );
114
115 if (ctx->Eval.Map2Vertex4)
116 set_active_eval2( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map2Vertex4 );
117 else if (ctx->Eval.Map2Vertex3)
118 set_active_eval2( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map2Vertex3 );
119
120 exec->eval.recalculate_maps = GL_FALSE;
121 }
122
123
124
vbo_exec_do_EvalCoord1f(struct vbo_exec_context * exec,GLfloat u)125 void vbo_exec_do_EvalCoord1f(struct vbo_exec_context *exec, GLfloat u)
126 {
127 GLuint attr;
128
129 for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) {
130 struct gl_1d_map *map = exec->eval.map1[attr].map;
131 if (map) {
132 GLfloat uu = (u - map->u1) * map->du;
133 fi_type data[4];
134
135 ASSIGN_4V(data, FLOAT_AS_UNION(0), FLOAT_AS_UNION(0),
136 FLOAT_AS_UNION(0), FLOAT_AS_UNION(1));
137
138 _math_horner_bezier_curve(map->Points, &data[0].f, uu,
139 exec->eval.map1[attr].sz,
140 map->Order);
141
142 COPY_SZ_4V( exec->vtx.attrptr[attr],
143 exec->vtx.attr[attr].size,
144 data );
145 }
146 }
147
148 /** Vertex -- EvalCoord1f is a noop if this map not enabled:
149 **/
150 if (exec->eval.map1[0].map) {
151 struct gl_1d_map *map = exec->eval.map1[0].map;
152 GLfloat uu = (u - map->u1) * map->du;
153 GLfloat vertex[4];
154
155 ASSIGN_4V(vertex, 0, 0, 0, 1);
156
157 _math_horner_bezier_curve(map->Points, vertex, uu,
158 exec->eval.map1[0].sz,
159 map->Order);
160
161 if (exec->eval.map1[0].sz == 4)
162 CALL_Vertex4fv(exec->ctx->CurrentServerDispatch, ( vertex ));
163 else
164 CALL_Vertex3fv(exec->ctx->CurrentServerDispatch, ( vertex ));
165 }
166 }
167
168
169
vbo_exec_do_EvalCoord2f(struct vbo_exec_context * exec,GLfloat u,GLfloat v)170 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
171 GLfloat u, GLfloat v )
172 {
173 GLuint attr;
174
175 for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) {
176 struct gl_2d_map *map = exec->eval.map2[attr].map;
177 if (map) {
178 GLfloat uu = (u - map->u1) * map->du;
179 GLfloat vv = (v - map->v1) * map->dv;
180 fi_type data[4];
181
182 ASSIGN_4V(data, FLOAT_AS_UNION(0), FLOAT_AS_UNION(0),
183 FLOAT_AS_UNION(0), FLOAT_AS_UNION(1));
184
185 _math_horner_bezier_surf(map->Points,
186 &data[0].f,
187 uu, vv,
188 exec->eval.map2[attr].sz,
189 map->Uorder, map->Vorder);
190
191 COPY_SZ_4V( exec->vtx.attrptr[attr],
192 exec->vtx.attr[attr].size,
193 data );
194 }
195 }
196
197 /** Vertex -- EvalCoord2f is a noop if this map not enabled:
198 **/
199 if (exec->eval.map2[0].map) {
200 struct gl_2d_map *map = exec->eval.map2[0].map;
201 GLfloat uu = (u - map->u1) * map->du;
202 GLfloat vv = (v - map->v1) * map->dv;
203 GLfloat vertex[4];
204
205 ASSIGN_4V(vertex, 0, 0, 0, 1);
206
207 if (exec->ctx->Eval.AutoNormal) {
208 fi_type normal[4];
209 GLfloat du[4], dv[4];
210
211 _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv,
212 exec->eval.map2[0].sz,
213 map->Uorder, map->Vorder);
214
215 if (exec->eval.map2[0].sz == 4) {
216 du[0] = du[0]*vertex[3] - du[3]*vertex[0];
217 du[1] = du[1]*vertex[3] - du[3]*vertex[1];
218 du[2] = du[2]*vertex[3] - du[3]*vertex[2];
219
220 dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0];
221 dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1];
222 dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2];
223 }
224
225
226 CROSS3(&normal[0].f, du, dv);
227 NORMALIZE_3FV(&normal[0].f);
228 normal[3] = FLOAT_AS_UNION(1.0);
229
230 COPY_SZ_4V( exec->vtx.attrptr[VBO_ATTRIB_NORMAL],
231 exec->vtx.attr[VBO_ATTRIB_NORMAL].size,
232 normal );
233
234 }
235 else {
236 _math_horner_bezier_surf(map->Points, vertex, uu, vv,
237 exec->eval.map2[0].sz,
238 map->Uorder, map->Vorder);
239 }
240
241 if (exec->vtx.attr[VBO_ATTRIB_POS].size == 4)
242 CALL_Vertex4fv(exec->ctx->CurrentServerDispatch, ( vertex ));
243 else
244 CALL_Vertex3fv(exec->ctx->CurrentServerDispatch, ( vertex ));
245 }
246 }
247
248
249