Added Mesh:setDrawRange(min, max) and Mesh:getDrawRange().

If no vertex map is set, this restricts the drawn vertices to those whose indices in the vertex array are between [min, max] inclusive.
If a vertex map is set, this restricts the values used in the vertex map to those whose indices in the vertex map array are between [min, max] inclusive.

Added Mesh constructor variant: love.graphics.newMesh(vertexcount, texture, drawmode). Creates a Mesh with a certain number of vertices with x,y,u,v,r,g,b,a values of (0,0,0,0,255,255,255,255).

src/modules/graphics/opengl/wrap_Mesh.cpp

@@ -315,6 +315,38 @@ int w_Mesh_getDrawMode(lua_State *L)
 	return 1;
 }
 
+int w_Mesh_setDrawRange(lua_State *L)
+{
+	Mesh *t = luax_checkmesh(L, 1);
+
+	if (lua_isnoneornil(L, 2))
+		t->setDrawRange();
+	else
+	{
+		int rangemin = luaL_checkint(L, 2) - 1;
+		int rangemax = luaL_checkint(L, 3) - 1;
+		EXCEPT_GUARD(t->setDrawRange(rangemin, rangemax);)
+	}
+
+	return 0;
+}
+
+int w_Mesh_getDrawRange(lua_State *L)
+{
+	Mesh *t = luax_checkmesh(L, 1);
+
+	int rangemin = -1;
+	int rangemax = -1;
+	t->getDrawRange(rangemin, rangemax);
+
+	if (rangemin < 0 || rangemax < 0)
+		return 0;
+
+	lua_pushinteger(L, rangemin + 1);
+	lua_pushinteger(L, rangemax + 1);
+	return 2;
+}
+
 int w_Mesh_setVertexColors(lua_State *L)
 {
 	Mesh *t = luax_checkmesh(L, 1);
@@ -358,6 +390,8 @@ static const luaL_Reg functions[] =
 	{ "getTexture", w_Mesh_getTexture },
 	{ "setDrawMode", w_Mesh_setDrawMode },
 	{ "getDrawMode", w_Mesh_getDrawMode },
+	{ "setDrawRange", w_Mesh_setDrawRange },
+	{ "getDrawRange", w_Mesh_getDrawRange },
 	{ "setVertexColors", w_Mesh_setVertexColors },
 	{ "hasVertexColors", w_Mesh_hasVertexColors },
 	{ "setWireframe", w_Mesh_setWireframe },