Math Lib: add mul_v3_project_m4_v3

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c
index 888587e055c..af42af88582 100644
--- a/source/blender/blenlib/intern/math_matrix.c
+++ b/source/blender/blenlib/intern/math_matrix.c
@@ -514,6 +514,16 @@ void mul_project_m4_v3(float mat[4][4], float vec[3])
 	vec[2] /= w;
 }
 
+void mul_v3_project_m4_v3(float r[3], float mat[4][4], const float vec[3])
+{
+	const float w = mul_project_m4_v3_zfac(mat, vec);
+	mul_v3_m4v3(r, mat, vec);
+
+	r[0] /= w;
+	r[1] /= w;
+	r[2] /= w;
+}
+
 void mul_v2_project_m4_v3(float r[2], float mat[4][4], const float vec[3])
 {
 	const float w = mul_project_m4_v3_zfac(mat, vec);