From 1ce09d7ef97cf7d51bfc7b1e20dd6ac14ad8806f Mon Sep 17 00:00:00 2001
From: David CARLIER <devnexen@gmail.com>
Date: Fri, 16 Jun 2023 12:59:34 +0100
Subject: [PATCH] R_SetFrustum micro optimisation.

---
 src/client/refresh/files/surf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/client/refresh/files/surf.c b/src/client/refresh/files/surf.c
index 93d1e04a..db10cd07 100644
--- a/src/client/refresh/files/surf.c
+++ b/src/client/refresh/files/surf.c
@@ -174,6 +174,9 @@ R_SetFrustum(vec3_t vup, vec3_t vpn, vec3_t vright, vec3_t r_origin,
 	RotatePointAroundVector(frustum[3].normal, vright, vpn,
 			-(90 - fov_y / 2));
 
+#if defined(__GNUC__)
+#       pragma GCC unroll 4
+#endif
 	for (i = 0; i < 4; i++)
 	{
 		frustum[i].type = PLANE_ANYZ;