OpenGLTexture.hpp

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#ifndef OPENGLTEXTURE_HPP_
#define OPENGLTEXTURE_HPP_
 
#include <Core/OSDef.hpp>
#include <Runtime/Texture.hpp>
#include <glad/glad.h>
 
namespace Sleak {
namespace RenderEngine {
 
/// OpenGL 2D texture, loadable from disk or an in-memory pixel buffer.
class ENGINE_API OpenGLTexture : public Texture {
public:
    OpenGLTexture();
    ~OpenGLTexture() override;
 
    /// Uploads raw pixel data as a new GL texture, generating mips.
    bool LoadFromMemory(const void* data, uint32_t width, uint32_t height,
                        TextureFormat format) override;
    /// Decodes an image file and uploads it as a new GL texture.
    bool LoadFromFile(const std::string& filePath) override;
 
    void Bind(uint32_t slot = 0) const override;
    void Unbind() const override;
 
    void SetFilter(TextureFilter filter) override;
    void SetWrapMode(TextureWrapMode wrapMode) override;
    void SetLodBias(float bias) override;
    float GetLodBias() const override { return m_lodBias; }
 
    uint32_t GetWidth() const override { return m_width; }
    uint32_t GetHeight() const override { return m_height; }
    TextureFormat GetFormat() const override { return m_format; }
    TextureType GetType() const override { return TextureType::Texture2D; }
 
    uint64_t GetImGuiTextureID() const override { return static_cast<uint64_t>(m_texture); }
 
    GLuint GetGLTexture() const { return m_texture; }
 
private:
    GLuint m_texture = 0;
    uint32_t m_width = 0;
    uint32_t m_height = 0;
    TextureFormat m_format = TextureFormat::RGBA8;
    TextureFilter m_filter = TextureFilter::Linear;
    float m_lodBias = 0.0f;
};
 
}  // namespace RenderEngine
}  // namespace Sleak
 
#endif  // OPENGLTEXTURE_HPP_