2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * New (3.1) transformation code written by Keith Whitwell.
30 #include "main/glheader.h"
31 #include "main/imports.h"
32 #include "main/macros.h"
39 * Given a vector [count][4] of floats, set all the [][elt] values
40 * to 0 (if elt = 0, 1, 2) or 1.0 (if elt = 3).
43 _mesa_vector4f_clean_elem( GLvector4f *vec, GLuint count, GLuint elt )
45 static const GLubyte elem_bits[4] = {
51 static const GLfloat clean[4] = { 0, 0, 0, 1 };
52 const GLfloat v = clean[elt];
53 GLfloat (*data)[4] = (GLfloat (*)[4])vec->start;
56 for (i = 0; i < count; i++)
59 vec->flags &= ~elem_bits[elt];
63 static const GLubyte size_bits[5] = {
73 * Initialize GLvector objects.
74 * \param v the vector object to initialize.
75 * \param flags bitwise-OR of VEC_* flags
76 * \param storage pointer to storage for the vector's data
79 _mesa_vector4f_init( GLvector4f *v, GLbitfield flags, GLfloat (*storage)[4] )
81 v->stride = 4 * sizeof(GLfloat);
82 v->size = 2; /* may change: 2-4 for vertices and 1-4 for texcoords */
84 v->start = (GLfloat *) storage;
86 v->flags = size_bits[4] | flags;
91 * Initialize GLvector objects and allocate storage.
92 * \param v the vector object
93 * \param flags bitwise-OR of VEC_* flags
94 * \param count number of elements to allocate in vector
95 * \param alignment desired memory alignment for the data (in bytes)
98 _mesa_vector4f_alloc( GLvector4f *v, GLbitfield flags, GLuint count,
101 v->stride = 4 * sizeof(GLfloat);
103 v->storage = _mesa_align_malloc( count * 4 * sizeof(GLfloat), alignment );
104 v->storage_count = count;
105 v->start = (GLfloat *) v->storage;
106 v->data = (GLfloat (*)[4]) v->storage;
108 v->flags = size_bits[4] | flags | VEC_MALLOC;
113 * Vector deallocation. Free whatever memory is pointed to by the
114 * vector's storage field if the VEC_MALLOC flag is set.
115 * DO NOT free the GLvector object itself, though.
118 _mesa_vector4f_free( GLvector4f *v )
120 if (v->flags & VEC_MALLOC) {
121 _mesa_align_free( v->storage );
125 v->flags &= ~VEC_MALLOC;
134 _mesa_vector4f_print( const GLvector4f *v, const GLubyte *cullmask,
137 static const GLfloat c[4] = { 0, 0, 0, 1 };
138 static const char *templates[5] = {
140 "%d:\t%f, 0, 0, 1\n",
141 "%d:\t%f, %f, 0, 1\n",
142 "%d:\t%f, %f, %f, 1\n",
143 "%d:\t%f, %f, %f, %f\n"
146 const char *t = templates[v->size];
147 GLfloat *d = (GLfloat *)v->data;
148 GLuint j, i = 0, count;
150 printf("data-start\n");
151 for (; d != v->start; STRIDE_F(d, v->stride), i++)
152 printf(t, i, d[0], d[1], d[2], d[3]);
154 printf("start-count(%u)\n", v->count);
155 count = i + v->count;
158 for (; i < count; STRIDE_F(d, v->stride), i++)
160 printf(t, i, d[0], d[1], d[2], d[3]);
163 for (; i < count; STRIDE_F(d, v->stride), i++)
164 printf(t, i, d[0], d[1], d[2], d[3]);
167 for (j = v->size; j < 4; j++) {
168 if ((v->flags & (1<<j)) == 0) {
170 printf("checking col %u is clean as advertised ", j);
172 for (i = 0, d = (GLfloat *) v->data;
173 i < count && d[j] == c[j];
174 i++, STRIDE_F(d, v->stride)) {
181 printf(" --> Failed at %u ******\n", i);