- implement per-renderer sprite hiding based on the actor's render feature flags

- hook the thing up to zscript (does not currently compile)

src/gl/scene/gl_sprite.cpp

@@ -79,6 +79,7 @@ EXTERN_CVAR (Float, transsouls)
 
 extern TArray<spritedef_t> sprites;
 extern TArray<spriteframe_t> SpriteFrames;
+extern uint32_t r_renderercaps;
 
 enum HWRenderStyle
 {
@@ -677,6 +678,13 @@ void GLSprite::Process(AActor* thing, sector_t * sector, int thruportal)
 		if (!(thing->flags & MF_STEALTH) || !mDrawer->FixedColormap || !gl_enhanced_nightvision || thing == camera)
 			return;
 	}
+
+	// check renderrequired vs ~r_rendercaps, if anything matches we don't support that feature,
+	// check renderhidden vs r_rendercaps, if anything matches we do support that feature and should hide it.
+	if ((!!((uint32_t)(thing->renderrequired) & ~r_renderercaps)) ||
+		(!!((uint32_t)(thing->renderhidden) & r_renderercaps)))
+		return;
+
 	int spritenum = thing->sprite;
 	DVector2 sprscale = thing->Scale;
 	if (thing->player != NULL)

src/polyrenderer/scene/poly_sprite.cpp

@@ -32,6 +32,7 @@
 
 EXTERN_CVAR(Float, transsouls)
 EXTERN_CVAR(Int, r_drawfuzz)
+extern uint32_t r_renderercaps;
 
 bool RenderPolySprite::GetLine(AActor *thing, DVector2 &left, DVector2 &right)
 {
@@ -176,6 +177,12 @@ bool RenderPolySprite::IsThingCulled(AActor *thing)
 		return true;
 	}
 
+	// check renderrequired vs ~r_rendercaps, if anything matches we don't support that feature,
+	// check renderhidden vs r_rendercaps, if anything matches we do support that feature and should hide it.
+	if ((!!((uint32_t)(thing->renderrequired) & ~r_renderercaps)) ||
+		(!!((uint32_t)(thing->renderhidden) & r_renderercaps)))
+		return true;
+
 	return false;
 }
 

src/scripting/thingdef_properties.cpp

@@ -1837,3 +1837,18 @@ DEFINE_SCRIPTED_PROPERTY(unmorphflash, S, PowerMorph)
 }
 
 
+//==========================================================================
+// actor render feature filters - stop rendering if the renderer does/does not support certain features
+//==========================================================================
+DEFINE_SCRIPTED_PROPERTY(renderrequired, I, Actor)
+{
+	PROP_INT_PARM(f, 0);
+	defaults->renderrequired = f;
+}
+
+DEFINE_SCRIPTED_PROPERTY(renderhidden, I, Actor)
+{
+	PROP_INT_PARM(f, 0);
+	defaults->renderhidden = f;
+}
+

src/swrenderer/scene/r_opaque_pass.cpp

@@ -72,6 +72,7 @@
 
 EXTERN_CVAR(Bool, r_fullbrightignoresectorcolor);
 EXTERN_CVAR(Bool, r_drawvoxels);
+extern uint32_t r_renderercaps;
 
 namespace
 {
@@ -968,6 +969,12 @@ namespace swrenderer
 			return false;
 		}
 
+		// check renderrequired vs ~r_rendercaps, if anything matches we don't support that feature,
+		// check renderhidden vs r_rendercaps, if anything matches we do support that feature and should hide it.
+		if ((!!((uint32_t)(thing->renderrequired) & ~r_renderercaps)) ||
+			(!!((uint32_t)(thing->renderhidden) & r_renderercaps)))
+			return false;
+
 		// [ZZ] Or less definitely not visible (hue)
 		// [ZZ] 10.01.2016: don't try to clip stuff inside a skybox against the current portal.
 		RenderPortal *renderportal = Thread->Portal.get();