[core] Refactor Buffer

1 files changed, 41 insertions, 0 deletions

diff --git a/src/mbgl/gl/index_buffer.hpp b/src/mbgl/gl/index_buffer.hpp
new file mode 100644
index 0000000000..f38d7fd4f5
--- /dev/null
+++ b/src/mbgl/gl/index_buffer.hpp
@@ -0,0 +1,41 @@
+#pragma once
+
+#include <mbgl/gl/object.hpp>
+
+namespace mbgl {
+namespace gl {
+
+class Line {
+public:
+    Line(uint16_t a_, uint16_t b_)
+        : a(a_), b(b_) {}
+
+    uint16_t a;
+    uint16_t b;
+
+    static constexpr std::size_t IndexCount = 2;
+};
+
+class Triangle {
+public:
+    Triangle(uint16_t a_, uint16_t b_, uint16_t c_)
+        : a(a_), b(b_), c(c_) {}
+
+    uint16_t a;
+    uint16_t b;
+    uint16_t c;
+
+    static constexpr std::size_t IndexCount = 3;
+};
+
+template <class Primitive>
+class IndexBuffer {
+public:
+    static_assert(std::is_same<Primitive, Line>::value || std::is_same<Primitive, Triangle>::value,
+                  "primitive must be Line or Triangle");
+    static constexpr std::size_t primitiveSize = sizeof(Primitive);
+    UniqueBuffer buffer;
+};
+
+} // namespace gl
+} // namespace mbgl