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author | marha <marha@users.sourceforge.net> | 2009-10-08 13:15:52 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-10-08 13:15:52 +0000 |
commit | a0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch) | |
tree | f5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/src/mesa/math/m_vector.h | |
parent | c73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff) | |
download | vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.tar.gz vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.tar.bz2 vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.zip |
Added MesaLib-7.6
Diffstat (limited to 'mesalib/src/mesa/math/m_vector.h')
-rw-r--r-- | mesalib/src/mesa/math/m_vector.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/mesalib/src/mesa/math/m_vector.h b/mesalib/src/mesa/math/m_vector.h new file mode 100644 index 000000000..71281d575 --- /dev/null +++ b/mesalib/src/mesa/math/m_vector.h @@ -0,0 +1,92 @@ +/* + * Mesa 3-D graphics library + * Version: 7.3 + * + * Copyright (C) 1999-2008 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. + */ + + +#ifndef _M_VECTOR_H_ +#define _M_VECTOR_H_ + +#include "main/glheader.h" + + +#define VEC_DIRTY_0 0x1 +#define VEC_DIRTY_1 0x2 +#define VEC_DIRTY_2 0x4 +#define VEC_DIRTY_3 0x8 +#define VEC_MALLOC 0x10 /* storage field points to self-allocated mem*/ +#define VEC_NOT_WRITEABLE 0x40 /* writable elements to hold clipped data */ +#define VEC_BAD_STRIDE 0x100 /* matches tnl's prefered stride */ + + +#define VEC_SIZE_1 VEC_DIRTY_0 +#define VEC_SIZE_2 (VEC_DIRTY_0|VEC_DIRTY_1) +#define VEC_SIZE_3 (VEC_DIRTY_0|VEC_DIRTY_1|VEC_DIRTY_2) +#define VEC_SIZE_4 (VEC_DIRTY_0|VEC_DIRTY_1|VEC_DIRTY_2|VEC_DIRTY_3) + + + +/** + * Wrap all the information about vectors up in a struct. Has + * additional fields compared to the other vectors to help us track of + * different vertex sizes, and whether we need to clean columns out + * because they contain non-(0,0,0,1) values. + * + * The start field is used to reserve data for copied vertices at the + * end of _mesa_transform_vb, and avoids the need for a multiplication in + * the transformation routines. + */ +typedef struct { + GLfloat (*data)[4]; /**< may be malloc'd or point to client data */ + GLfloat *start; /**< points somewhere inside of <data> */ + GLuint count; /**< size of the vector (in elements) */ + GLuint stride; /**< stride from one element to the next (in bytes) */ + GLuint size; /**< 2-4 for vertices and 1-4 for texcoords */ + GLbitfield flags; /**< bitmask of VEC_x flags */ + void *storage; /**< self-allocated storage */ + GLuint storage_count; /**< storage size in elements */ +} GLvector4f; + + +extern void _mesa_vector4f_init( GLvector4f *v, GLbitfield flags, + GLfloat (*storage)[4] ); +extern void _mesa_vector4f_alloc( GLvector4f *v, GLbitfield flags, + GLuint count, GLuint alignment ); +extern void _mesa_vector4f_free( GLvector4f *v ); +extern void _mesa_vector4f_print( const GLvector4f *v, const GLubyte *, GLboolean ); +extern void _mesa_vector4f_clean_elem( GLvector4f *vec, GLuint nr, GLuint elt ); + + +/** + * Given vector <v>, return a pointer (cast to <type *> to the <i>-th element. + * + * End up doing a lot of slow imuls if not careful. + */ +#define VEC_ELT( v, type, i ) \ + ( (type *) ( ((GLbyte *) ((v)->data)) + (i) * (v)->stride) ) + + +#endif |