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 37static 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 43static 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 49static 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 59static 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 69void 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 126void 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 172void 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