1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2001 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 25 /* 26 * New (3.1) transformation code written by Keith Whitwell. 27 */ 28 29 #include <stdio.h> 30 31 #include "main/glheader.h" 32 #include "main/imports.h" 33 #include "main/macros.h" 34 35 #include "m_vector.h" 36 37 38 39 /** 40 * Given a vector [count][4] of floats, set all the [][elt] values 41 * to 0 (if elt = 0, 1, 2) or 1.0 (if elt = 3). 42 */ 43 void 44 _mesa_vector4f_clean_elem( GLvector4f *vec, GLuint count, GLuint elt ) 45 { 46 static const GLubyte elem_bits[4] = { 47 VEC_DIRTY_0, 48 VEC_DIRTY_1, 49 VEC_DIRTY_2, 50 VEC_DIRTY_3 51 }; 52 static const GLfloat clean[4] = { 0, 0, 0, 1 }; 53 const GLfloat v = clean[elt]; 54 GLfloat (*data)[4] = (GLfloat (*)[4])vec->start; 55 GLuint i; 56 57 for (i = 0; i < count; i++) 58 data[i][elt] = v; 59 60 vec->flags &= ~elem_bits[elt]; 61 } 62 63 64 static const GLubyte size_bits[5] = { 65 0, 66 VEC_SIZE_1, 67 VEC_SIZE_2, 68 VEC_SIZE_3, 69 VEC_SIZE_4, 70 }; 71 72 73 /** 74 * Initialize GLvector objects. 75 * \param v the vector object to initialize. 76 * \param flags bitwise-OR of VEC_* flags 77 * \param storage pointer to storage for the vector's data 78 */ 79 void 80 _mesa_vector4f_init( GLvector4f *v, GLbitfield flags, GLfloat (*storage)[4] ) 81 { 82 v->stride = 4 * sizeof(GLfloat); 83 v->size = 2; /* may change: 2-4 for vertices and 1-4 for texcoords */ 84 v->data = storage; 85 v->start = (GLfloat *) storage; 86 v->count = 0; 87 v->flags = size_bits[4] | flags; 88 } 89 90 91 /** 92 * Initialize GLvector objects and allocate storage. 93 * \param v the vector object 94 * \param flags bitwise-OR of VEC_* flags 95 * \param count number of elements to allocate in vector 96 * \param alignment desired memory alignment for the data (in bytes) 97 */ 98 void 99 _mesa_vector4f_alloc( GLvector4f *v, GLbitfield flags, GLuint count, 100 GLuint alignment ) 101 { 102 v->stride = 4 * sizeof(GLfloat); 103 v->size = 2; 104 v->storage = _mesa_align_malloc( count * 4 * sizeof(GLfloat), alignment ); 105 v->storage_count = count; 106 v->start = (GLfloat *) v->storage; 107 v->data = (GLfloat (*)[4]) v->storage; 108 v->count = 0; 109 v->flags = size_bits[4] | flags | VEC_MALLOC; 110 } 111 112 113 /** 114 * Vector deallocation. Free whatever memory is pointed to by the 115 * vector's storage field if the VEC_MALLOC flag is set. 116 * DO NOT free the GLvector object itself, though. 117 */ 118 void 119 _mesa_vector4f_free( GLvector4f *v ) 120 { 121 if (v->flags & VEC_MALLOC) { 122 _mesa_align_free( v->storage ); 123 v->data = NULL; 124 v->start = NULL; 125 v->storage = NULL; 126 v->flags &= ~VEC_MALLOC; 127 } 128 } 129 130 131 /** 132 * For debugging 133 */ 134 void 135 _mesa_vector4f_print( const GLvector4f *v, const GLubyte *cullmask, 136 GLboolean culling ) 137 { 138 static const GLfloat c[4] = { 0, 0, 0, 1 }; 139 static const char *templates[5] = { 140 "%d:\t0, 0, 0, 1\n", 141 "%d:\t%f, 0, 0, 1\n", 142 "%d:\t%f, %f, 0, 1\n", 143 "%d:\t%f, %f, %f, 1\n", 144 "%d:\t%f, %f, %f, %f\n" 145 }; 146 147 const char *t = templates[v->size]; 148 GLfloat *d = (GLfloat *)v->data; 149 GLuint j, i = 0, count; 150 151 printf("data-start\n"); 152 for (; d != v->start; STRIDE_F(d, v->stride), i++) 153 printf(t, i, d[0], d[1], d[2], d[3]); 154 155 printf("start-count(%u)\n", v->count); 156 count = i + v->count; 157 158 if (culling) { 159 for (; i < count; STRIDE_F(d, v->stride), i++) 160 if (cullmask[i]) 161 printf(t, i, d[0], d[1], d[2], d[3]); 162 } 163 else { 164 for (; i < count; STRIDE_F(d, v->stride), i++) 165 printf(t, i, d[0], d[1], d[2], d[3]); 166 } 167 168 for (j = v->size; j < 4; j++) { 169 if ((v->flags & (1<<j)) == 0) { 170 171 printf("checking col %u is clean as advertised ", j); 172 173 for (i = 0, d = (GLfloat *) v->data; 174 i < count && d[j] == c[j]; 175 i++, STRIDE_F(d, v->stride)) { 176 /* no-op */ 177 } 178 179 if (i == count) 180 printf(" --> ok\n"); 181 else 182 printf(" --> Failed at %u ******\n", i); 183 } 184 } 185 } 186