src/renderer/Renderer.hpp


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#pragma once

#include <basic/math.hpp>
#include <renderer/RenderGroup.hpp>
#include <SDL3/SDL.h>
#include <SDL3/SDL_video.h>

struct RCanvas {
    uint32_t rshift;
    uint32_t gshift;
    uint32_t bshift;
    uint32_t ashift;
    int32_t w;
    int32_t h;
    uint32_t *pixels;
};


class Renderer {
public:
    Renderer(SDL_Window *window);

    bool Init();
    void ResizeCanvas(int32_t w, int32_t h);
    void Draw(RenderGroup &render_group);


private:
    void DrawRectangle(RenderGroup& rgroup, REntity_Rectangle& rect);
    void DrawMonoBitmap(REntity_Bitmap& bitmap, Color color);

    int32_t WorldXToScreenX(RenderGroup& rgroup, float x);
    int32_t WorldYToScreenY(RenderGroup& rgroup, float y);


private:
    SDL_Window *m_Window;
    uint32_t m_GlTexId;
    RCanvas m_Canvas;
};