[core] split off render layers

1 files changed, 33 insertions, 0 deletions

diff --git a/src/mbgl/renderer/render_raster_layer.cpp b/src/mbgl/renderer/render_raster_layer.cpp
new file mode 100644
index 0000000000..f877a02398
--- /dev/null
+++ b/src/mbgl/renderer/render_raster_layer.cpp
@@ -0,0 +1,33 @@
+#include <mbgl/renderer/render_raster_layer.hpp>
+#include <mbgl/renderer/bucket.hpp>
+#include <mbgl/style/layers/raster_layer_impl.hpp>
+
+namespace mbgl {
+
+RenderRasterLayer::RenderRasterLayer(const style::RasterLayer::Impl& _impl)
+        : RenderLayer(style::LayerType::Raster, _impl),
+          impl(&_impl) {
+}
+
+std::unique_ptr<RenderLayer> RenderRasterLayer::clone() const {
+    return std::make_unique<RenderRasterLayer>(*this);
+}
+
+std::unique_ptr<Bucket> RenderRasterLayer::createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) const {
+    assert(false);
+    return nullptr;
+}
+
+void RenderRasterLayer::cascade(const style::CascadeParameters& parameters) {
+    unevaluated = impl->cascading.cascade(parameters, std::move(unevaluated));
+}
+
+bool RenderRasterLayer::evaluate(const style::PropertyEvaluationParameters& parameters) {
+    evaluated = unevaluated.evaluate(parameters);
+
+    passes = evaluated.get<style::RasterOpacity>() > 0 ? RenderPass::Translucent : RenderPass::None;
+
+    return unevaluated.hasTransition();
+}
+
+} // namespace mbgl