/* * Mesa 3-D graphics library * * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: * Keith Whitwell <keith@tungstengraphics.com> */ #include "main/glheader.h" #include "main/context.h" #include "main/macros.h" #include "math/m_eval.h" #include "main/dispatch.h" #include "vbo_exec.h" static void clear_active_eval1( struct vbo_exec_context *exec, GLuint attr ) { assert(attr < Elements(exec->eval.map1)); exec->eval.map1[attr].map = NULL; } static void clear_active_eval2( struct vbo_exec_context *exec, GLuint attr ) { assert(attr < Elements(exec->eval.map2)); exec->eval.map2[attr].map = NULL; } static void set_active_eval1( struct vbo_exec_context *exec, GLuint attr, GLuint dim, struct gl_1d_map *map ) { assert(attr < Elements(exec->eval.map1)); if (!exec->eval.map1[attr].map) { exec->eval.map1[attr].map = map; exec->eval.map1[attr].sz = dim; } } static void set_active_eval2( struct vbo_exec_context *exec, GLuint attr, GLuint dim, struct gl_2d_map *map ) { assert(attr < Elements(exec->eval.map2)); if (!exec->eval.map2[attr].map) { exec->eval.map2[attr].map = map; exec->eval.map2[attr].sz = dim; } } void vbo_exec_eval_update( struct vbo_exec_context *exec ) { struct gl_context *ctx = exec->ctx; GLuint attr; /* Vertex program maps have priority over conventional attribs */ for (attr = 0; attr < VBO_ATTRIB_FIRST_MATERIAL; attr++) { clear_active_eval1( exec, attr ); clear_active_eval2( exec, attr ); } if (ctx->Eval.Map1Color4) set_active_eval1( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map1Color4 ); if (ctx->Eval.Map2Color4) set_active_eval2( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map2Color4 ); if (ctx->Eval.Map1TextureCoord4) set_active_eval1( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map1Texture4 ); else if (ctx->Eval.Map1TextureCoord3) set_active_eval1( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map1Texture3 ); else if (ctx->Eval.Map1TextureCoord2) set_active_eval1( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map1Texture2 ); else if (ctx->Eval.Map1TextureCoord1) set_active_eval1( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map1Texture1 ); if (ctx->Eval.Map2TextureCoord4) set_active_eval2( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map2Texture4 ); else if (ctx->Eval.Map2TextureCoord3) set_active_eval2( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map2Texture3 ); else if (ctx->Eval.Map2TextureCoord2) set_active_eval2( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map2Texture2 ); else if (ctx->Eval.Map2TextureCoord1) set_active_eval2( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map2Texture1 ); if (ctx->Eval.Map1Normal) set_active_eval1( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map1Normal ); if (ctx->Eval.Map2Normal) set_active_eval2( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map2Normal ); if (ctx->Eval.Map1Vertex4) set_active_eval1( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map1Vertex4 ); else if (ctx->Eval.Map1Vertex3) set_active_eval1( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map1Vertex3 ); if (ctx->Eval.Map2Vertex4) set_active_eval2( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map2Vertex4 ); else if (ctx->Eval.Map2Vertex3) set_active_eval2( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map2Vertex3 ); exec->eval.recalculate_maps = 0; } void vbo_exec_do_EvalCoord1f(struct vbo_exec_context *exec, GLfloat u) { GLuint attr; for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) { struct gl_1d_map *map = exec->eval.map1[attr].map; if (map) { GLfloat uu = (u - map->u1) * map->du; GLfloat data[4]; ASSIGN_4V(data, 0, 0, 0, 1); _math_horner_bezier_curve(map->Points, data, uu, exec->eval.map1[attr].sz, map->Order); COPY_SZ_4V( exec->vtx.attrptr[attr], exec->vtx.attrsz[attr], data ); } } /** Vertex -- EvalCoord1f is a noop if this map not enabled: **/ if (exec->eval.map1[0].map) { struct gl_1d_map *map = exec->eval.map1[0].map; GLfloat uu = (u - map->u1) * map->du; GLfloat vertex[4]; ASSIGN_4V(vertex, 0, 0, 0, 1); _math_horner_bezier_curve(map->Points, vertex, uu, exec->eval.map1[0].sz, map->Order); if (exec->eval.map1[0].sz == 4) CALL_Vertex4fv(GET_DISPATCH(), ( vertex )); else CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); } } void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec, GLfloat u, GLfloat v ) { GLuint attr; for (attr = 1; attr <= VBO_ATTRIB_TEX7; attr++) { struct gl_2d_map *map = exec->eval.map2[attr].map; if (map) { GLfloat uu = (u - map->u1) * map->du; GLfloat vv = (v - map->v1) * map->dv; GLfloat data[4]; ASSIGN_4V(data, 0, 0, 0, 1); _math_horner_bezier_surf(map->Points, data, uu, vv, exec->eval.map2[attr].sz, map->Uorder, map->Vorder); COPY_SZ_4V( exec->vtx.attrptr[attr], exec->vtx.attrsz[attr], data ); } } /** Vertex -- EvalCoord2f is a noop if this map not enabled: **/ if (exec->eval.map2[0].map) { struct gl_2d_map *map = exec->eval.map2[0].map; GLfloat uu = (u - map->u1) * map->du; GLfloat vv = (v - map->v1) * map->dv; GLfloat vertex[4]; ASSIGN_4V(vertex, 0, 0, 0, 1); if (exec->ctx->Eval.AutoNormal) { GLfloat normal[4]; GLfloat du[4], dv[4]; _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv, exec->eval.map2[0].sz, map->Uorder, map->Vorder); if (exec->eval.map2[0].sz == 4) { du[0] = du[0]*vertex[3] - du[3]*vertex[0]; du[1] = du[1]*vertex[3] - du[3]*vertex[1]; du[2] = du[2]*vertex[3] - du[3]*vertex[2]; dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0]; dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1]; dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2]; } CROSS3(normal, du, dv); NORMALIZE_3FV(normal); normal[3] = 1.0; COPY_SZ_4V( exec->vtx.attrptr[VBO_ATTRIB_NORMAL], exec->vtx.attrsz[VBO_ATTRIB_NORMAL], normal ); } else { _math_horner_bezier_surf(map->Points, vertex, uu, vv, exec->eval.map2[0].sz, map->Uorder, map->Vorder); } if (exec->vtx.attrsz[0] == 4) CALL_Vertex4fv(GET_DISPATCH(), ( vertex )); else CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); } }