[core] Share render tiles lists between layers

This helps to avoid unneeded allocations.

1 files changed, 2 insertions, 13 deletions

diff --git a/src/mbgl/renderer/render_layer.cpp b/src/mbgl/renderer/render_layer.cpp
index 9e79d7338c..b92b28998c 100644
--- a/src/mbgl/renderer/render_layer.cpp
+++ b/src/mbgl/renderer/render_layer.cpp
@@ -47,25 +47,14 @@ bool RenderLayer::supportsZoom(float zoom) const {
 
 void RenderLayer::prepare(const LayerPrepareParameters& params) {
     assert(params.source);
-    renderTiles = filterRenderTiles(params.source->getRenderTiles());
+    renderTiles = params.source->getRenderTiles();
+    assert(renderTiles);
 }
 
 optional<Color> RenderLayer::getSolidBackground() const {
     return nullopt;
 }
 
-RenderTiles RenderLayer::filterRenderTiles(RenderTiles tiles) const {
-    RenderTiles filtered;
-
-    for (const RenderTile& tile : tiles) {
-        if (tile.holdForFade()) {
-            continue;
-        }
-        filtered.emplace_back(tile);
-    }
-    return filtered;
-}
-
 void RenderLayer::markContextDestroyed() {
     // no-op
 }