PiGuiRenderer.h

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// Copyright © 2008-2024 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#pragma once
 
#include "graphics/Renderer.h"
#include <memory>
 
struct ImDrawData;
 
namespace PiGui {
 
    class InstanceRenderer {
    public:
        InstanceRenderer(Graphics::Renderer *r);
 
        void Initialize();
        void Shutdown();
 
        void NewFrame() {}
 
        // Render a draw data to the screen using an orthographic projection
        void RenderDrawData(ImDrawData *draw_data);
 
        // Render a draw data struct using a user-defined material and rendering setup.
        // The user is responsible for setting the transform and projection matrices before drawing.
        // The provided material should support two parameters:
        //  - texture0:     Texture2d
        //  - vertexDepth:  float
        void RenderDrawData(ImDrawData *draw_data, Graphics::Material* material);
 
        void CreateFontsTexture();
        void DestroyFontsTexture();
 
    private:
        Graphics::Renderer *m_renderer;
 
        std::unique_ptr<Graphics::Material> m_material;
        std::unique_ptr<Graphics::VertexBuffer> m_vtxBuffer;
        std::unique_ptr<Graphics::IndexBuffer> m_idxBuffer;
        std::unique_ptr<Graphics::Texture> m_fontsTexture;
    };
} // namespace PiGui