bugfix: [#29486] 2D filters make scene disappear when wire material used - patch by Juha Mäki-Kanto

when last drawn material is wire it will not set back to face drawing.

source/gameengine/Rasterizer/RAS_2DFilterManager.cpp

@@ -431,6 +431,8 @@ void RAS_2DFilterManager::RenderFilters(RAS_ICanvas* canvas)
 	glViewport(0,0, texturewidth, textureheight);
 
 	glDisable(GL_DEPTH_TEST);
+	// in case the previous material was wire
+	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 	// if the last rendered face had alpha add it would messes with the color of the plane we apply 2DFilter to
 	glDisable(GL_BLEND); 
 	glPushMatrix();		//GL_MODELVIEW