check return value of invert_matrix()

diff --git a/src/glu/mesa/Makefile b/src/glu/mesa/Makefile
index 47f95ef..611d7a6 100644 (file)
--- a/src/glu/mesa/Makefile
+++ b/src/glu/mesa/Makefile
@@ -23,7 +23,7 @@ C_SOURCES = \
 
 OBJECTS = $(C_SOURCES:.c=.o)
 
-INCLUDES = -I. -I- -I$(TOP)/include
+INCLUDES = -I. -I$(TOP)/include
 
 ##### RULES #####
 

diff --git a/src/glu/mesa/project.c b/src/glu/mesa/project.c
index 6fa0326..2e79cdf 100644 (file)
--- a/src/glu/mesa/project.c
+++ b/src/glu/mesa/project.c
@@ -346,7 +346,8 @@ gluUnProject(GLdouble winx, GLdouble winy, GLdouble winz,
 
    /* calcul transformation inverse */
    matmul(A, proj, model);
-   invert_matrix(A, m);
+   if (!invert_matrix(A, m))
+      return GL_FALSE;
 
    /* d'ou les coordonnees objets */
    transform_point(out, m, in);
@@ -386,7 +387,8 @@ gluUnProject4(GLdouble winx, GLdouble winy, GLdouble winz, GLdouble clipw,
 
    /* calcul transformation inverse */
    matmul(A, projMatrix, modelMatrix);
-   invert_matrix(A, m);
+   if (!invert_matrix(A, m))
+      return GL_FALSE;
 
    /* d'ou les coordonnees objets */
    transform_point(out, m, in);

diff --git a/src/glu/mini/project.c b/src/glu/mini/project.c
index a2747de..7127994 100644 (file)
--- a/src/glu/mini/project.c
+++ b/src/glu/mini/project.c
@@ -347,7 +347,8 @@ gluUnProject(GLdouble winx, GLdouble winy, GLdouble winz,
 
    /* calcul transformation inverse */
    matmul(A, proj, model);
-   invert_matrix(A, m);
+   if (!invert_matrix(A, m))
+      return GL_FALSE;
 
    /* d'ou les coordonnees objets */
    transform_point(out, m, in);
@@ -387,7 +388,8 @@ gluUnProject4(GLdouble winx, GLdouble winy, GLdouble winz, GLdouble clipw,
 
    /* calcul transformation inverse */
    matmul(A, projMatrix, modelMatrix);
-   invert_matrix(A, m);
+   if (!invert_matrix(A, m))
+      return GL_FALSE;
 
    /* d'ou les coordonnees objets */
    transform_point(out, m, in);