Merge pull request #14126 from mapbox/gfx-refactor-4

Graphics refactor #4

src/mbgl/programs/hillshade_prepare_program.cpp

@@ -1,7 +1,10 @@
 #include <mbgl/programs/hillshade_prepare_program.hpp>
+#include <mbgl/gfx/context_impl.hpp>
 
 namespace mbgl {
 
+template std::unique_ptr<gfx::Program<HillshadePrepareProgram>> gfx::Context::createProgram(const ProgramParameters&);
+
 static_assert(sizeof(HillshadePrepareLayoutVertex) == 8, "expected HillshadeLayoutVertex size");
 
 } // namespace mbgl