*wog

1 files changed, 9 insertions, 0 deletions

diff --git a/src/math/vec4.c b/src/math/vec4.c
index 71ec6b6..3d6df46 100644
--- a/src/math/vec4.c
+++ b/src/math/vec4.c
@@ -16,6 +16,15 @@ void vec4_dividew(Vec4* v, Vec3* out) {
 	out->z = v->z * w;
 }
 
+void vec4_dividewnoz(Vec4* v, Vec4* out) {
+	ssr_assert(out && v);
+	float w = 1.f / v->w;
+	out->x = v->x * w;
+	out->y = v->y * w;
+	out->z = v->z;
+	out->w = v->w;
+}
+
 void vec4_tostring(Vec4* v, char buf[]) {
 	sprintf(buf, "%8.3f %8.3f %8.3f %8.3f", v->x, v->y, v->z, v->w);
 }