[build] Adding a build flag to build without GL if needed (#16120)

* [build] Adding a build flag to build without GL if needed

* [build] Moving custom layer to mbgl/gl

1 files changed, 17 insertions, 0 deletions

diff --git a/include/mbgl/gl/custom_layer_factory.hpp b/include/mbgl/gl/custom_layer_factory.hpp
new file mode 100644
index 0000000000..963a3dc2fd
--- /dev/null
+++ b/include/mbgl/gl/custom_layer_factory.hpp
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <mbgl/layermanager/layer_factory.hpp>
+#include <mbgl/style/layer.hpp>
+
+#include <array>
+
+namespace mbgl {
+
+class CustomLayerFactory : public LayerFactory {
+protected:
+    const style::LayerTypeInfo* getTypeInfo() const noexcept final;
+    std::unique_ptr<style::Layer> createLayer(const std::string& id, const style::conversion::Convertible& value) noexcept final;
+    std::unique_ptr<RenderLayer> createRenderLayer(Immutable<style::Layer::Impl>) noexcept final;
+};
+
+} // namespace mbgl