diff --git a/changelog.md b/changelog.md
index 2676af7..8416627 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,7 +1,6 @@
 Removed cvars:
 * r_allowExtensions (always use extensions if available)
 * r_allowSoftwareGL
-* r_clear
 * r_colorbits (use desktop color depth)
 * r_displayRefresh
 * r_dlightBacks
diff --git a/src/engine/renderer/tr_backend.c b/src/engine/renderer/tr_backend.c
index 6a1c103..143accf 100644
--- a/src/engine/renderer/tr_backend.c
+++ b/src/engine/renderer/tr_backend.c
@@ -868,8 +868,19 @@ const void	*RB_DrawBuffer( const void *data ) {
 
 	qglDrawBuffer( cmd->buffer );
 
-    // VULKAN
-    vk_begin_frame();
+	// VULKAN
+	vk_begin_frame();
+
+	// clear screen for debugging
+	if ( r_clear->integer ) {
+		qglClearColor( 1, 0, 0.5, 1 );
+		qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+		// VULKAN
+		RB_SetGL2D(); // to ensure we have viewport that occupies entire window
+		float color[4] = {1, 0, 0.5, 1};
+		vk_clear_attachments(false, true, color);
+	}
 
 	return (const void *)(cmd + 1);
 }
diff --git a/src/engine/renderer/tr_init.c b/src/engine/renderer/tr_init.c
index 4570fe2..bde98f0 100644
--- a/src/engine/renderer/tr_init.c
+++ b/src/engine/renderer/tr_init.c
@@ -97,6 +97,7 @@ cvar_t	*r_picmip;
 cvar_t	*r_showtris;
 cvar_t	*r_showsky;
 cvar_t	*r_shownormals;
+cvar_t	*r_clear;
 cvar_t	*r_swapInterval;
 cvar_t	*r_textureMode;
 cvar_t	*r_offsetFactor;
@@ -941,6 +942,7 @@ void R_Register( void )
 	r_showtris = ri.Cvar_Get ("r_showtris", "0", CVAR_CHEAT);
 	r_showsky = ri.Cvar_Get ("r_showsky", "0", CVAR_CHEAT);
 	r_shownormals = ri.Cvar_Get ("r_shownormals", "0", CVAR_CHEAT);
+	r_clear = ri.Cvar_Get ("r_clear", "0", CVAR_CHEAT);
 	r_offsetFactor = ri.Cvar_Get( "r_offsetfactor", "-1", CVAR_CHEAT );
 	r_offsetUnits = ri.Cvar_Get( "r_offsetunits", "-2", CVAR_CHEAT );
 	r_drawBuffer = ri.Cvar_Get( "r_drawBuffer", "GL_BACK", CVAR_CHEAT );
diff --git a/src/engine/renderer/tr_local.h b/src/engine/renderer/tr_local.h
index 1c56982..c6372ec 100644
--- a/src/engine/renderer/tr_local.h
+++ b/src/engine/renderer/tr_local.h
@@ -1008,6 +1008,7 @@ extern	cvar_t	*r_logFile;						// number of frames to emit GL logs
 extern	cvar_t	*r_showtris;					// enables wireframe rendering of the world
 extern	cvar_t	*r_showsky;						// forces sky in front of all surfaces
 extern	cvar_t	*r_shownormals;					// draws wireframe normals
+extern	cvar_t	*r_clear;						// force screen clear every frame
 
 extern	cvar_t	*r_shadows;						// controls shadows: 0 = none, 1 = blur, 2 = stencil, 3 = black planar projection