- Clean up PolyTriangleDrawer API so that it can better support both softpoly and the swrenderer

- Slightly improve how softpoly processes portals
- Pass the vertex transform matrix via a command rather than being part of the drawer args
- Improve zbuffer drawers in the software renderer
- Misc model rendering fixes

src/polyrenderer/scene/poly_playersprite.cpp

@@ -43,8 +43,6 @@ void RenderPolyPlayerSprites::Render(PolyRenderThread *thread)
 	//
 	// We also can't move it because the model render code relies on it
 
-	//renderHUDModel = gl_IsHUDModelForPlayerAvailable(players[consoleplayer].camera->player);
-
 	const auto &viewpoint = PolyRenderer::Instance()->Viewpoint;
 
 	int 		i;
@@ -62,6 +60,8 @@ void RenderPolyPlayerSprites::Render(PolyRenderThread *thread)
 		(r_deathcamera && viewpoint.camera->health <= 0))
 		return;
 
+	renderHUDModel = gl_IsHUDModelForPlayerAvailable(players[consoleplayer].camera->player);
+
 	PolyTransferHeights fakeflat(viewpoint.camera->subsector);
 
 	FDynamicColormap *basecolormap;