From 30f51ae067379c2b3573c06b707d25a9704df7be Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 18 Dec 2001 04:06:44 +0000
Subject: Replace old matrix stacks with new code based on struct matrix_stack.
 Moved vertex program hash table into shared context state. Implemented
 reference counting for vertex programs. Replaced tnl "ProjectedClip" with
 "Ndc" (normalized device coordinates).

---
 src/mesa/math/m_matrix.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

(limited to 'src/mesa/math')

diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c
index 91f26f164fd..e06b5684c4b 100644
--- a/src/mesa/math/m_matrix.c
+++ b/src/mesa/math/m_matrix.c
@@ -1,8 +1,8 @@
-/* $Id: m_matrix.c,v 1.9 2001/09/18 23:06:14 kschultz Exp $ */
+/* $Id: m_matrix.c,v 1.10 2001/12/18 04:06:46 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  *
@@ -975,11 +975,10 @@ _math_matrix_loadf( GLmatrix *mat, const GLfloat *m )
 void
 _math_matrix_ctr( GLmatrix *m )
 {
-   if ( m->m == 0 ) {
-      m->m = (GLfloat *) ALIGN_MALLOC( 16 * sizeof(GLfloat), 16 );
-   }
-   MEMCPY( m->m, Identity, sizeof(Identity) );
-   m->inv = 0;
+   m->m = (GLfloat *) ALIGN_MALLOC( 16 * sizeof(GLfloat), 16 );
+   if (m->m)
+      MEMCPY( m->m, Identity, sizeof(Identity) );
+   m->inv = NULL;
    m->type = MATRIX_IDENTITY;
    m->flags = 0;
 }
@@ -987,13 +986,13 @@ _math_matrix_ctr( GLmatrix *m )
 void
 _math_matrix_dtr( GLmatrix *m )
 {
-   if ( m->m != 0 ) {
+   if (m->m) {
       ALIGN_FREE( m->m );
-      m->m = 0;
+      m->m = NULL;
    }
-   if ( m->inv != 0 ) {
+   if (m->inv) {
       ALIGN_FREE( m->inv );
-      m->inv = 0;
+      m->inv = NULL;
    }
 }
 
@@ -1001,9 +1000,10 @@ _math_matrix_dtr( GLmatrix *m )
 void
 _math_matrix_alloc_inv( GLmatrix *m )
 {
-   if ( m->inv == 0 ) {
+   if (!m->inv) {
       m->inv = (GLfloat *) ALIGN_MALLOC( 16 * sizeof(GLfloat), 16 );
-      MEMCPY( m->inv, Identity, 16 * sizeof(GLfloat) );
+      if (m->inv)
+         MEMCPY( m->inv, Identity, 16 * sizeof(GLfloat) );
    }
 }
 
-- 
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