| |
| /* |
| * Mesa 3-D graphics library |
| * Version: 3.5 |
| * |
| * Copyright (C) 1999-2001 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 |
| * BRIAN PAUL 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. |
| */ |
| |
| /* |
| * New (3.1) transformation code written by Keith Whitwell. |
| */ |
| |
| |
| #include "glheader.h" |
| #include "imports.h" |
| #include "macros.h" |
| #include "imports.h" |
| |
| #include "m_vector.h" |
| |
| |
| |
| /* |
| * Given a vector [count][4] of floats, set all the [][elt] values |
| * to 0 (if elt = 0, 1, 2) or 1.0 (if elt = 3). |
| */ |
| void _mesa_vector4f_clean_elem( GLvector4f *vec, GLuint count, GLuint elt ) |
| { |
| static const GLubyte elem_bits[4] = { |
| VEC_DIRTY_0, |
| VEC_DIRTY_1, |
| VEC_DIRTY_2, |
| VEC_DIRTY_3 |
| }; |
| static const GLfloat clean[4] = { 0, 0, 0, 1 }; |
| const GLfloat v = clean[elt]; |
| GLfloat (*data)[4] = (GLfloat (*)[4])vec->start; |
| GLuint i; |
| |
| for (i = 0 ; i < count ; i++) |
| data[i][elt] = v; |
| |
| vec->flags &= ~elem_bits[elt]; |
| } |
| |
| static const GLubyte size_bits[5] = { |
| 0, |
| VEC_SIZE_1, |
| VEC_SIZE_2, |
| VEC_SIZE_3, |
| VEC_SIZE_4, |
| }; |
| |
| |
| |
| /* |
| * Initialize GLvector objects. |
| * Input: v - the vector object to initialize. |
| * flags - bitwise-OR of VEC_* flags |
| * storage - pointer to storage for the vector's data |
| */ |
| |
| |
| void _mesa_vector4f_init( GLvector4f *v, GLuint flags, GLfloat (*storage)[4] ) |
| { |
| v->stride = 4 * sizeof(GLfloat); |
| v->size = 2; /* may change: 2-4 for vertices and 1-4 for texcoords */ |
| v->data = storage; |
| v->start = (GLfloat *) storage; |
| v->count = 0; |
| v->flags = size_bits[4] | flags ; |
| } |
| |
| |
| |
| |
| /* |
| * Initialize GLvector objects and allocate storage. |
| * Input: v - the vector object |
| * sz - unused???? |
| * flags - bitwise-OR of VEC_* flags |
| * count - number of elements to allocate in vector |
| * alignment - desired memory alignment for the data (in bytes) |
| */ |
| |
| |
| void _mesa_vector4f_alloc( GLvector4f *v, GLuint flags, GLuint count, |
| GLuint alignment ) |
| { |
| v->stride = 4 * sizeof(GLfloat); |
| v->size = 2; |
| v->storage = ALIGN_MALLOC( count * 4 * sizeof(GLfloat), alignment ); |
| v->start = (GLfloat *) v->storage; |
| v->data = (GLfloat (*)[4]) v->storage; |
| v->count = 0; |
| v->flags = size_bits[4] | flags | VEC_MALLOC ; |
| } |
| |
| |
| |
| |
| /* |
| * Vector deallocation. Free whatever memory is pointed to by the |
| * vector's storage field if the VEC_MALLOC flag is set. |
| * DO NOT free the GLvector object itself, though. |
| */ |
| |
| |
| void _mesa_vector4f_free( GLvector4f *v ) |
| { |
| if (v->flags & VEC_MALLOC) { |
| ALIGN_FREE( v->storage ); |
| v->data = NULL; |
| v->start = NULL; |
| v->storage = NULL; |
| v->flags &= ~VEC_MALLOC; |
| } |
| } |
| |
| |
| /* |
| * For debugging |
| */ |
| void _mesa_vector4f_print( GLvector4f *v, GLubyte *cullmask, GLboolean culling ) |
| { |
| GLfloat c[4] = { 0, 0, 0, 1 }; |
| const char *templates[5] = { |
| "%d:\t0, 0, 0, 1\n", |
| "%d:\t%f, 0, 0, 1\n", |
| "%d:\t%f, %f, 0, 1\n", |
| "%d:\t%f, %f, %f, 1\n", |
| "%d:\t%f, %f, %f, %f\n" |
| }; |
| |
| const char *t = templates[v->size]; |
| GLfloat *d = (GLfloat *)v->data; |
| GLuint j, i = 0, count; |
| |
| _mesa_printf("data-start\n"); |
| for ( ; d != v->start ; STRIDE_F(d, v->stride), i++) |
| _mesa_printf(t, i, d[0], d[1], d[2], d[3]); |
| |
| _mesa_printf("start-count(%u)\n", v->count); |
| count = i + v->count; |
| |
| if (culling) { |
| for ( ; i < count ; STRIDE_F(d, v->stride), i++) |
| if (cullmask[i]) |
| _mesa_printf(t, i, d[0], d[1], d[2], d[3]); |
| } |
| else { |
| for ( ; i < count ; STRIDE_F(d, v->stride), i++) |
| _mesa_printf(t, i, d[0], d[1], d[2], d[3]); |
| } |
| |
| for (j = v->size ; j < 4; j++) { |
| if ((v->flags & (1<<j)) == 0) { |
| |
| _mesa_printf("checking col %u is clean as advertised ", j); |
| |
| for (i = 0, d = (GLfloat *) v->data ; |
| i < count && d[j] == c[j] ; |
| i++, STRIDE_F(d, v->stride)) {}; |
| |
| if (i == count) |
| _mesa_printf(" --> ok\n"); |
| else |
| _mesa_printf(" --> Failed at %u ******\n", i); |
| } |
| } |
| } |
| |
| |