From 23caf20169ac38436ee9c13914f1d6aa7cf6bb5e Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 16 Nov 2000 21:05:34 +0000 Subject: Move the transform and lighting code to two new directories math: Provides basic matrix and vector functionality that might be useful to multiple software t&l implementations, and is used by core mesa to manage the Model, Project, etc matrices. tnl: The real transform & lighting code from core mesa, including everything from glVertex3f through vertex buffer handling, transformation, clipping, lighting and handoff to a driver for rasterization. The interfaces of these can be further tightened up, but the basic splitting up of state and code move is done. --- src/mesa/math/m_matrix.h | 176 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 src/mesa/math/m_matrix.h (limited to 'src/mesa/math/m_matrix.h') diff --git a/src/mesa/math/m_matrix.h b/src/mesa/math/m_matrix.h new file mode 100644 index 0000000000..8eedbdb942 --- /dev/null +++ b/src/mesa/math/m_matrix.h @@ -0,0 +1,176 @@ +/* $Id: m_matrix.h,v 1.1 2000/11/16 21:05:41 keithw Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.5 + * + * Copyright (C) 1999-2000 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. + */ + + +#ifndef _M_MATRIX_H +#define _M_MATRIX_H + + + +/* Give symbolic names to some of the entries in the matrix to help + * out with the rework of the viewport_map as a matrix transform. + */ +#define MAT_SX 0 +#define MAT_SY 5 +#define MAT_SZ 10 +#define MAT_TX 12 +#define MAT_TY 13 +#define MAT_TZ 14 + +/* + * Different kinds of 4x4 transformation matrices: + */ +#define MATRIX_GENERAL 0 /* general 4x4 matrix */ +#define MATRIX_IDENTITY 1 /* identity matrix */ +#define MATRIX_3D_NO_ROT 2 /* ortho projection and others... */ +#define MATRIX_PERSPECTIVE 3 /* perspective projection matrix */ +#define MATRIX_2D 4 /* 2-D transformation */ +#define MATRIX_2D_NO_ROT 5 /* 2-D scale & translate only */ +#define MATRIX_3D 6 /* 3-D transformation */ + +#define MAT_FLAG_IDENTITY 0 +#define MAT_FLAG_GENERAL 0x1 +#define MAT_FLAG_ROTATION 0x2 +#define MAT_FLAG_TRANSLATION 0x4 +#define MAT_FLAG_UNIFORM_SCALE 0x8 +#define MAT_FLAG_GENERAL_SCALE 0x10 +#define MAT_FLAG_GENERAL_3D 0x20 +#define MAT_FLAG_PERSPECTIVE 0x40 +#define MAT_FLAG_SINGULAR 0x80 +#define MAT_DIRTY_TYPE 0x100 +#define MAT_DIRTY_FLAGS 0x200 +#define MAT_DIRTY_INVERSE 0x400 + +#define MAT_FLAGS_ANGLE_PRESERVING (MAT_FLAG_ROTATION | \ + MAT_FLAG_TRANSLATION | \ + MAT_FLAG_UNIFORM_SCALE) + +#define MAT_FLAGS_LENGTH_PRESERVING (MAT_FLAG_ROTATION | \ + MAT_FLAG_TRANSLATION) + +#define MAT_FLAGS_3D (MAT_FLAG_ROTATION | \ + MAT_FLAG_TRANSLATION | \ + MAT_FLAG_UNIFORM_SCALE | \ + MAT_FLAG_GENERAL_SCALE | \ + MAT_FLAG_GENERAL_3D) + +#define MAT_FLAGS_GEOMETRY (MAT_FLAG_GENERAL | \ + MAT_FLAG_ROTATION | \ + MAT_FLAG_TRANSLATION | \ + MAT_FLAG_UNIFORM_SCALE | \ + MAT_FLAG_GENERAL_SCALE | \ + MAT_FLAG_GENERAL_3D | \ + MAT_FLAG_PERSPECTIVE | \ + MAT_FLAG_SINGULAR) + +#define MAT_DIRTY (MAT_DIRTY_TYPE | \ + MAT_DIRTY_FLAGS | \ + MAT_DIRTY_INVERSE) + +#define TEST_MAT_FLAGS(mat, a) \ + ((MAT_FLAGS_GEOMETRY & (~(a)) & ((mat)->flags) ) == 0) + + +typedef struct { + GLfloat *m; /* 16-byte aligned */ + GLfloat *inv; /* optional, 16-byte aligned */ + GLuint flags; + GLuint type; /* one of the MATRIX_* values */ +} GLmatrix; + + + + +extern void +_math_matrix_ctr( GLmatrix *m ); + +extern void +_math_matrix_dtr( GLmatrix *m ); + +extern void +_math_matrix_alloc_inv( GLmatrix *m ); + +extern void +_math_matrix_mul_matrix( GLmatrix *dest, const GLmatrix *a, const GLmatrix *b ); + +extern void +_math_matrix_mul_floats( GLmatrix *dest, const GLfloat *b ); + +extern void +_math_matrix_loadf( GLmatrix *mat, const GLfloat *m ); + +extern void +_math_matrix_translate( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z ); + +extern void +_math_matrix_rotate( GLmatrix *m, GLfloat angle, + GLfloat x, GLfloat y, GLfloat z ); + +extern void +_math_matrix_scale( GLmatrix *mat, GLfloat x, GLfloat y, GLfloat z ); + +extern void +_math_matrix_ortho( GLmatrix *mat, + GLfloat left, GLfloat right, + GLfloat bottom, GLfloat top, + GLfloat nearval, GLfloat farval ); + +extern void +_math_matrix_frustrum( GLmatrix *mat, + GLfloat left, GLfloat right, + GLfloat bottom, GLfloat top, + GLfloat nearval, GLfloat farval ); + +extern void +_math_matrix_set_identity( GLmatrix *dest ); + +extern void +_math_matrix_copy( GLmatrix *to, const GLmatrix *from ); + +extern void +_math_matrix_analyze( GLmatrix *mat ); + +extern void +_math_matrix_print( const GLmatrix *m ); + + + + +/* Related functions that don't actually operate on GLmatrix structs: + */ +extern void +_math_transposef( GLfloat to[16], const GLfloat from[16] ); + +extern void +_math_transposed( GLdouble to[16], const GLdouble from[16] ); + +extern void +_math_transposefd( GLfloat to[16], const GLdouble from[16] ); + + + + +#endif -- cgit v1.2.3