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 (at) 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 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 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 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 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 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 } 122 123 124 125 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.attrsz[attr], 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(GET_DISPATCH(), ( vertex )); 163 else 164 CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); 165 } 166 } 167 168 169 170 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.attrsz[attr], 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.attrsz[VBO_ATTRIB_NORMAL], 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.attrsz[0] == 4) 242 CALL_Vertex4fv(GET_DISPATCH(), ( vertex )); 243 else 244 CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); 245 } 246 } 247 248 249
