ui_draw_data.h

#pragma once
 
#include <cstdint>
#include <vector>
 
#include <glm/glm.hpp>
 
#include "ecs/entity.h"
#include "ecs/component/ui/ui_element.h"
#include "resource/asset/font_asset.h"
#include "resource/asset/texture_asset.h"
 
namespace Vkm::Engine {

struct UIVertex {
    glm::vec2 pos;
    glm::vec2 uv;      
    glm::vec4 color;
    glm::vec4 shape;
    glm::vec4 border;  
    float     image;   
};

constexpr float UI_TEXT_MARK = -1.0f;

struct UIDrawCmd {
    uint32_t   firstVertex = 0;
    uint32_t   vertexCount = 0;

    UIRect clip = {};
 
    FontHandle    font  = {};
    TextureHandle image = {};
};

struct UIDrawData {
    std::vector<UIVertex>  vertices;
    std::vector<UIDrawCmd> commands;

    EntityId pointerTarget{};
 
    void clear() {
        vertices.clear();
        commands.clear();
        pointerTarget = {};
    }
};
 
} // namespace Vkm::Engine