Improve GLES3 scene renderer compatibility with older devices

drivers/gles3/rasterizer_scene_gles3.cpp

@@ -2666,7 +2666,7 @@ RasterizerSceneGLES3::RasterizerSceneGLES3() {
 		global_defines += "#define MAX_GLOBAL_SHADER_UNIFORMS 256\n"; // TODO: this is arbitrary for now
 		global_defines += "\n#define MAX_LIGHT_DATA_STRUCTS " + itos(config->max_renderable_lights) + "\n";
 		global_defines += "\n#define MAX_DIRECTIONAL_LIGHT_DATA_STRUCTS " + itos(MAX_DIRECTIONAL_LIGHTS) + "\n";
-		global_defines += "\n#define MAX_FORWARD_LIGHTS uint(" + itos(config->max_lights_per_object) + ")\n";
+		global_defines += "\n#define MAX_FORWARD_LIGHTS " + itos(config->max_lights_per_object) + "u\n";
 		material_storage->shaders.scene_shader.initialize(global_defines);
 		scene_globals.shader_default_version = material_storage->shaders.scene_shader.version_create();
 		material_storage->shaders.scene_shader.version_bind_shader(scene_globals.shader_default_version, SceneShaderGLES3::MODE_COLOR);