core: rename mbgl directories to mln (#4511)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

include/mln/gl/drawable_gl.hpp

@@ -0,0 +1,74 @@
+#pragma once
+
+#include <mln/gfx/drawable.hpp>
+#include <mln/gfx/draw_mode.hpp>
+#include <mln/gl/vertex_array.hpp>
+#include <mln/gl/vertex_attribute_gl.hpp>
+
+#include <memory>
+
+namespace mln {
+
+class SegmentBase;
+class PaintParameters;
+
+namespace gfx {
+
+class IndexBuffer;
+class UploadPass;
+class VertexBufferResource;
+
+using UniqueVertexBufferResource = std::unique_ptr<VertexBufferResource>;
+
+} // namespace gfx
+
+namespace gl {
+
+class Texture2D;
+class VertexArray;
+
+class DrawableGL : public gfx::Drawable {
+public:
+    DrawableGL(std::string name);
+    ~DrawableGL() override;
+
+    void draw(PaintParameters&) const override;
+
+    struct DrawSegmentGL;
+    void setIndexData(gfx::IndexVectorBasePtr, std::vector<UniqueDrawSegment> segments) override;
+
+    void setVertices(std::vector<uint8_t>&&, std::size_t, gfx::AttributeDataType) override;
+
+    const gfx::UniformBufferArray& getUniformBuffers() const override;
+    gfx::UniformBufferArray& mutableUniformBuffers() override;
+
+    void setVertexAttrId(const size_t id);
+
+    void upload(gfx::UploadPass&);
+
+    void updateVertexAttributes(gfx::VertexAttributeArrayPtr,
+                                std::size_t vertexCount,
+                                gfx::DrawMode,
+                                gfx::IndexVectorBasePtr,
+                                const SegmentBase* segments,
+                                std::size_t segmentCount) override;
+
+protected:
+    class Impl;
+    const std::unique_ptr<Impl> impl;
+
+    // For testing only.
+    DrawableGL(std::unique_ptr<Impl>);
+
+private:
+    gfx::ColorMode makeColorMode(PaintParameters&) const;
+    gfx::StencilMode makeStencilMode(PaintParameters&) const;
+
+    void uploadTextures() const;
+
+    void bindTextures() const;
+    void unbindTextures() const;
+};
+
+} // namespace gl
+} // namespace mln