[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, 21 insertions, 0 deletions

diff --git a/src/mbgl/gl/custom_layer_factory.cpp b/src/mbgl/gl/custom_layer_factory.cpp
new file mode 100644
index 0000000000..616d0271e0
--- /dev/null
+++ b/src/mbgl/gl/custom_layer_factory.cpp
@@ -0,0 +1,21 @@
+#include <mbgl/gl/custom_layer.hpp>
+#include <mbgl/gl/custom_layer_factory.hpp>
+#include <mbgl/gl/custom_layer_impl.hpp>
+#include <mbgl/gl/render_custom_layer.hpp>
+
+namespace mbgl {
+
+const style::LayerTypeInfo* CustomLayerFactory::getTypeInfo() const noexcept {
+    return style::CustomLayer::Impl::staticTypeInfo();
+}
+
+std::unique_ptr<style::Layer> CustomLayerFactory::createLayer(const std::string&, const style::conversion::Convertible&) noexcept {
+    assert(false);
+    return nullptr;
+}
+
+std::unique_ptr<RenderLayer> CustomLayerFactory::createRenderLayer(Immutable<style::Layer::Impl> impl) noexcept {
+    return std::make_unique<RenderCustomLayer>(staticImmutableCast<style::CustomLayer::Impl>(impl));
+}
+
+} // namespace mbgl