diff options
| -rw-r--r-- | src/mesa/math/m_matrix.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c index e81be8a7e0..7d31a41c7a 100644 --- a/src/mesa/math/m_matrix.c +++ b/src/mesa/math/m_matrix.c @@ -10,9 +10,9 @@ /* * Mesa 3-D graphics library - * Version: 5.1 + * Version: 6.0.1 * - * Copyright (C) 1999-2003 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2004 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"), @@ -951,22 +951,28 @@ _math_matrix_ortho( GLmatrix *mat, GLfloat bottom, GLfloat top, GLfloat nearval, GLfloat farval ) { - GLfloat x, y, z; - GLfloat tx, ty, tz; GLfloat m[16]; - x = 2.0F / (right-left); - y = 2.0F / (top-bottom); - z = -2.0F / (farval-nearval); - tx = -(right+left) / (right-left); - ty = -(top+bottom) / (top-bottom); - tz = -(farval+nearval) / (farval-nearval); - #define M(row,col) m[col*4+row] - M(0,0) = x; M(0,1) = 0.0F; M(0,2) = 0.0F; M(0,3) = tx; - M(1,0) = 0.0F; M(1,1) = y; M(1,2) = 0.0F; M(1,3) = ty; - M(2,0) = 0.0F; M(2,1) = 0.0F; M(2,2) = z; M(2,3) = tz; - M(3,0) = 0.0F; M(3,1) = 0.0F; M(3,2) = 0.0F; M(3,3) = 1.0F; + M(0,0) = 2.0F / (right-left); + M(0,1) = 0.0F; + M(0,2) = 0.0F; + M(0,3) = -(right+left) / (right-left); + + M(1,0) = 0.0F; + M(1,1) = 2.0F / (top-bottom); + M(1,2) = 0.0F; + M(1,3) = -(top+bottom) / (top-bottom); + + M(2,0) = 0.0F; + M(2,1) = 0.0F; + M(2,2) = -2.0F / (farval-nearval); + M(2,3) = -(farval+nearval) / (farval-nearval); + + M(3,0) = 0.0F; + M(3,1) = 0.0F; + M(3,2) = 0.0F; + M(3,3) = 1.0F; #undef M matrix_multf( mat, m, (MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION)); |