diff --git a/bind/v4k.lua b/bind/v4k.lua
index fff0fd5..7105d8a 100644
--- a/bind/v4k.lua
+++ b/bind/v4k.lua
@@ -1392,6 +1392,7 @@ typedef struct skybox_t {
  void skybox_sh_add_light(skybox_t *sky, vec3 light, vec3 dir, float strength);
  int skybox_push_state(skybox_t *sky, mat44 proj, mat44 view);
  int skybox_pop_state();
+ void viewport_color(unsigned color);
  void viewport_clear(bool color, bool depth);
  void viewport_clip(vec2 from, vec2 to);
  int fx_load(const char *file);
diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 2aee142..358768e 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -17653,6 +17653,7 @@ API int      skybox_pop_state(); // @to deprecate
 // -----------------------------------------------------------------------------
 // post-fxs
 
+API void     viewport_color(unsigned color);
 API void     viewport_clear(bool color, bool depth);
 API void     viewport_clip(vec2 from, vec2 to);
 
@@ -372047,6 +372048,14 @@ void* screenshot_async( int n ) { // 3 RGB, 4 RGBA, -3 BGR, -4 BGRA
 // -----------------------------------------------------------------------------
 // viewports
 
+void viewport_color(unsigned color) {
+    unsigned r = (color >>  0) & 255;
+    unsigned g = (color >>  8) & 255;
+    unsigned b = (color >> 16) & 255;
+    unsigned a = (color >> 24) & 255;
+    glClearColor(r, g, b, a);
+}
+
 void viewport_clear(bool color, bool depth) {
     glClearDepthf(1);
     glClearStencil(0);
diff --git a/engine/split/v4k_render.c b/engine/split/v4k_render.c
index 8a02642..806fe27 100644
--- a/engine/split/v4k_render.c
+++ b/engine/split/v4k_render.c
@@ -2010,6 +2010,14 @@ void* screenshot_async( int n ) { // 3 RGB, 4 RGBA, -3 BGR, -4 BGRA
 // -----------------------------------------------------------------------------
 // viewports
 
+void viewport_color(unsigned color) {
+    unsigned r = (color >>  0) & 255;
+    unsigned g = (color >>  8) & 255;
+    unsigned b = (color >> 16) & 255;
+    unsigned a = (color >> 24) & 255;
+    glClearColor(r, g, b, a);
+}
+
 void viewport_clear(bool color, bool depth) {
     glClearDepthf(1);
     glClearStencil(0);
diff --git a/engine/split/v4k_render.h b/engine/split/v4k_render.h
index 247ed04..e523422 100644
--- a/engine/split/v4k_render.h
+++ b/engine/split/v4k_render.h
@@ -631,6 +631,7 @@ API int      skybox_pop_state(); // @to deprecate
 // -----------------------------------------------------------------------------
 // post-fxs
 
+API void     viewport_color(unsigned color);
 API void     viewport_clear(bool color, bool depth);
 API void     viewport_clip(vec2 from, vec2 to);
 
diff --git a/engine/v4k.c b/engine/v4k.c
index 9371da1..61db82c 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -19184,6 +19184,14 @@ void* screenshot_async( int n ) { // 3 RGB, 4 RGBA, -3 BGR, -4 BGRA
 // -----------------------------------------------------------------------------
 // viewports
 
+void viewport_color(unsigned color) {
+    unsigned r = (color >>  0) & 255;
+    unsigned g = (color >>  8) & 255;
+    unsigned b = (color >> 16) & 255;
+    unsigned a = (color >> 24) & 255;
+    glClearColor(r, g, b, a);
+}
+
 void viewport_clear(bool color, bool depth) {
     glClearDepthf(1);
     glClearStencil(0);
diff --git a/engine/v4k.h b/engine/v4k.h
index a3db514..2881501 100644
--- a/engine/v4k.h
+++ b/engine/v4k.h
@@ -3720,6 +3720,7 @@ API int      skybox_pop_state(); // @to deprecate
 // -----------------------------------------------------------------------------
 // post-fxs
 
+API void     viewport_color(unsigned color);
 API void     viewport_clear(bool color, bool depth);
 API void     viewport_clip(vec2 from, vec2 to);