added Texture.startingMip for js and usegl targets too (#1171)

h3d/impl/Driver.hx

@@ -8,7 +8,7 @@ typedef Query = {};
 #elseif js
 typedef IndexBuffer = { b : js.html.webgl.Buffer, is32 : Bool };
 typedef GPUBuffer = js.html.webgl.Buffer;
-typedef Texture = { t : js.html.webgl.Texture, width : Int, height : Int, internalFmt : Int, pixelFmt : Int, bits : Int, bias : Float, bind : Int #if multidriver, driver : Driver #end };
+typedef Texture = { t : js.html.webgl.Texture, width : Int, height : Int, internalFmt : Int, pixelFmt : Int, bits : Int, bias : Float, bind : Int #if multidriver, driver : Driver #end, startMip : Int };
 typedef Query = {};
 #elseif hlsdl
 typedef IndexBuffer = { b : sdl.GL.Buffer, is32 : Bool };
@@ -18,7 +18,7 @@ typedef Query = { q : sdl.GL.Query, kind : QueryKind };
 #elseif usegl
 typedef IndexBuffer = { b : haxe.GLTypes.Buffer, is32 : Bool };
 typedef GPUBuffer = haxe.GLTypes.Buffer;
-typedef Texture = { t : haxe.GLTypes.Texture, width : Int, height : Int, internalFmt : Int, pixelFmt : Int, bits : Int, bind : Int, bias : Float };
+typedef Texture = { t : haxe.GLTypes.Texture, width : Int, height : Int, internalFmt : Int, pixelFmt : Int, bits : Int, bind : Int, bias : Float, startMip : Int };
 typedef Query = { q : haxe.GLTypes.Query, kind : QueryKind };
 #elseif (hldx && dx12)
 typedef IndexBuffer = DX12Driver.IndexBufferData;