From 23c860ab9910d089fc3ef8fbb48f786697ec7f4b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Wed, 17 Apr 2024 22:35:46 +0200
Subject: [PATCH] new: MODEL_CULLFACE

---
 bind/v4k.lua              | 1 +
 engine/joint/v4k.h        | 6 +++++-
 engine/split/v4k_render.c | 5 ++++-
 engine/split/v4k_render.h | 1 +
 engine/v4k.c              | 5 ++++-
 engine/v4k.h              | 1 +
 6 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/bind/v4k.lua b/bind/v4k.lua
index 746072b..6eaefa0 100644
--- a/bind/v4k.lua
+++ b/bind/v4k.lua
@@ -1356,6 +1356,7 @@ enum MODEL_FLAGS {
     MODEL_MATCAPS = 16,
     MODEL_RIMLIGHT = 32,
     MODEL_PBR = 64,
+    MODEL_CULLFACE = 128,
 };
 enum SHADING_MODE {
     SHADING_NONE,
diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 1707d46..6aec453 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -17608,6 +17608,7 @@ enum MODEL_FLAGS {
     MODEL_MATCAPS = 16,
     MODEL_RIMLIGHT = 32,
     MODEL_PBR = 64,
+    MODEL_CULLFACE = 128,
 };
 
 enum SHADING_MODE {
@@ -386758,7 +386759,10 @@ void model_draw_call(model_t m, int shader) {
     handle old_shader = last_shader;
     shader_bind(shader);
 
-    renderstate_apply(&m.rs[model_getpass()]);
+    renderstate_t *rs = &m.rs[RENDER_PASS_NORMAL];
+    rs->cull_face_enabled = m.flags&MODEL_CULLFACE;
+
+    renderstate_apply(rs);
 
     glBindVertexArray( q->vao );
 
diff --git a/engine/split/v4k_render.c b/engine/split/v4k_render.c
index 4da8d10..27b72d5 100644
--- a/engine/split/v4k_render.c
+++ b/engine/split/v4k_render.c
@@ -4125,7 +4125,10 @@ void model_draw_call(model_t m, int shader) {
     handle old_shader = last_shader;
     shader_bind(shader);
 
-    renderstate_apply(&m.rs[model_getpass()]);
+    renderstate_t *rs = &m.rs[RENDER_PASS_NORMAL];
+    rs->cull_face_enabled = m.flags&MODEL_CULLFACE;
+
+    renderstate_apply(rs);
 
     glBindVertexArray( q->vao );
 
diff --git a/engine/split/v4k_render.h b/engine/split/v4k_render.h
index e7b67f5..a1b2d45 100644
--- a/engine/split/v4k_render.h
+++ b/engine/split/v4k_render.h
@@ -586,6 +586,7 @@ enum MODEL_FLAGS {
     MODEL_MATCAPS = 16,
     MODEL_RIMLIGHT = 32,
     MODEL_PBR = 64,
+    MODEL_CULLFACE = 128,
 };
 
 enum SHADING_MODE {
diff --git a/engine/v4k.c b/engine/v4k.c
index 7f0622f..4bb1622 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -21298,7 +21298,10 @@ void model_draw_call(model_t m, int shader) {
     handle old_shader = last_shader;
     shader_bind(shader);
 
-    renderstate_apply(&m.rs[model_getpass()]);
+    renderstate_t *rs = &m.rs[RENDER_PASS_NORMAL];
+    rs->cull_face_enabled = m.flags&MODEL_CULLFACE;
+
+    renderstate_apply(rs);
 
     glBindVertexArray( q->vao );
 
diff --git a/engine/v4k.h b/engine/v4k.h
index b722154..2968580 100644
--- a/engine/v4k.h
+++ b/engine/v4k.h
@@ -3675,6 +3675,7 @@ enum MODEL_FLAGS {
     MODEL_MATCAPS = 16,
     MODEL_RIMLIGHT = 32,
     MODEL_PBR = 64,
+    MODEL_CULLFACE = 128,
 };
 
 enum SHADING_MODE {