Texture.hpp

#pragma once
#include "resources/Image.hpp"
#include "graphics/GPUTypes.hpp"
#include "Common.hpp"
 
class GPUTexture;
 
class Texture {
public:
 
    Texture(const std::string & name);
 
    void upload(const Layout & layout, bool updateMipmaps);
 
    void clearImages();
 
    void allocateImages(uint channels, uint firstMip = 0, uint mipCount = 0xFFFFFFFF);
    
    void clean();
        
    glm::vec3 sampleCubemap(const glm::vec3 & dir) const;
 
    void setupAsDrawable(const Layout& layout, uint width, uint height, TextureShape shape = TextureShape::D2, uint mips = 1, uint depth = 1);
 
    void resize(const glm::vec2& resolution);
 
    void resize(uint w, uint h);
    
    const std::string & name() const;
 
    uint getMaxMipLevel() const;
 
    Texture & operator=(const Texture &) = delete;
    
    Texture(const Texture &) = delete;
    
    Texture & operator=(Texture &&) = default;
    
    Texture(Texture &&);
 
    ~Texture();
    
    std::vector<Image> images;       
    std::unique_ptr<GPUTexture> gpu; 
    
    uint width  = 0; 
    uint height = 0; 
    uint depth  = 1; 
    uint levels = 1; 
    
    TextureShape shape = TextureShape::D2; 
 
    Layout format = Layout::NONE; 
    bool drawable = false; 
 
private:
 
    std::string _name; 
    
};
 
namespace ImGui {
 
    void Image(const Texture & texture, const ImVec2& size, const ImVec2& uv0 = ImVec2(0,0), const ImVec2& uv1 = ImVec2(1,1), const ImVec4& tint_col = ImVec4(1,1,1,1), const ImVec4& border_col = ImVec4(0,0,0,0));
 
    bool ImageButton(const char* id, const Texture & texture, const ImVec2& size, const ImVec2& uv0 = ImVec2(0,0), const ImVec2& uv1 = ImVec2(1,1), const ImVec4& bg_col = ImVec4(0,0,0,0), const ImVec4& tint_col = ImVec4(1,1,1,1));
 
}