82ec59a2b0
Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: Alex Cristici <alex.cristici@gmail.com> Co-authored-by: mwilsnd <mwilsnd@gmail.com> Co-authored-by: Stefan Karschti <stefan.karschti@gmail.com> Co-authored-by: Bart Louwers <bart@emeel.net> Co-authored-by: Alex Cristici <alex@skoon.energy> Co-authored-by: Bart Louwers <bart.louwers@gmail.com> Co-authored-by: Wei Chen <alanchenboy@gmail.com> Co-authored-by: Siarhei Fedartsou <siarhei.fedartsou@gmail.com> Co-authored-by: tdcosta100 <tdcosta100@gmail.com>
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstdlib>
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#include <memory>
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namespace mbgl {
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namespace gfx {
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class Backend {
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public:
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/// @brief The active graphics API/backend type.
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enum class Type : uint8_t {
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OpenGL, ///< The OpenGL API backend
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Metal, ///< The Metal API backend
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TYPE_MAX, ///< Not a valid backend type, used to determine the number
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///< of available backends (ie for array allocation).
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};
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#if MLN_RENDER_BACKEND_METAL
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static constexpr Type DefaultType = Type::Metal;
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#else // assume MLN_RENDER_BACKEND_METAL
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static constexpr Type DefaultType = Type::OpenGL;
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#endif
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static void SetType(const Type value) {
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if (Value(value) != value) {
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abort(); // SetType must be called prior to any GetType calls.
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}
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}
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static Type GetType() { return Value(DefaultType); }
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template <typename T, typename... Args>
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static std::unique_ptr<T> Create(Args... args) {
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return Create<Type::OpenGL, T, Args...>(std::forward<Args>(args)...);
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}
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private:
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template <Type, typename T, typename... Args>
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static std::unique_ptr<T> Create(Args...);
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static Type Value(Type value) {
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static const Type type = value;
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return type;
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}
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};
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} // namespace gfx
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} // namespace mbgl
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