| /* |
| * Mesa 3-D graphics library |
| * |
| * 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 |
| * 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. |
| */ |
| |
| /* |
| * New (3.1) transformation code written by Keith Whitwell. |
| */ |
| |
| #include <stdio.h> |
| #include <stddef.h> |
| |
| #include "main/glheader.h" |
| #include "main/macros.h" |
| |
| #include "m_vector.h" |
| |
| #include "util/u_memory.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. |
| * \param v the vector object to initialize. |
| * \param flags bitwise-OR of VEC_* flags |
| * \param storage pointer to storage for the vector's data |
| */ |
| void |
| _mesa_vector4f_init( GLvector4f *v, GLbitfield flags, GLfloat (*storage)[4] ) |
| { |
| STATIC_ASSERT(V4F_DATA == offsetof(GLvector4f, data)); |
| STATIC_ASSERT(V4F_START == offsetof(GLvector4f, start)); |
| STATIC_ASSERT(V4F_COUNT == offsetof(GLvector4f, count)); |
| STATIC_ASSERT(V4F_STRIDE == offsetof(GLvector4f, stride)); |
| STATIC_ASSERT(V4F_SIZE == offsetof(GLvector4f, size)); |
| STATIC_ASSERT(V4F_FLAGS == offsetof(GLvector4f, flags)); |
| |
| 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. |
| * \param v the vector object |
| * \param flags bitwise-OR of VEC_* flags |
| * \param count number of elements to allocate in vector |
| * \param alignment desired memory alignment for the data (in bytes) |
| */ |
| void |
| _mesa_vector4f_alloc( GLvector4f *v, GLbitfield flags, GLuint count, |
| GLuint alignment ) |
| { |
| v->stride = 4 * sizeof(GLfloat); |
| v->size = 2; |
| v->storage = align_malloc( count * 4 * sizeof(GLfloat), alignment ); |
| v->storage_count = count; |
| 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( const GLvector4f *v, const GLubyte *cullmask, |
| GLboolean culling ) |
| { |
| static const GLfloat c[4] = { 0, 0, 0, 1 }; |
| static 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; |
| |
| printf("data-start\n"); |
| for (; d != v->start; STRIDE_F(d, v->stride), i++) |
| printf(t, i, d[0], d[1], d[2], d[3]); |
| |
| 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]) |
| printf(t, i, d[0], d[1], d[2], d[3]); |
| } |
| else { |
| for (; i < count; STRIDE_F(d, v->stride), i++) |
| printf(t, i, d[0], d[1], d[2], d[3]); |
| } |
| |
| for (j = v->size; j < 4; j++) { |
| if ((v->flags & (1<<j)) == 0) { |
| |
| 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)) { |
| /* no-op */ |
| } |
| |
| if (i == count) |
| printf(" --> ok\n"); |
| else |
| printf(" --> Failed at %u ******\n", i); |
| } |
| } |
| } |