Hyprland/src/render/Texture.hpp

#pragma once

#include "../defines.hpp"
#include "../helpers/cm/ColorManagement.hpp"
#include <aquamarine/buffer/Buffer.hpp>
#include <hyprutils/math/Misc.hpp>
#include <span>

class IHLBuffer;
HYPRUTILS_FORWARD(Math, CRegion);

namespace Render {
    enum eTextureType : int8_t {
        TEXTURE_INVALID = -1, // Invalid
        TEXTURE_RGBA    = 0,  // 4 channels
        TEXTURE_RGBX,         // discard A
        TEXTURE_3D_LUT,       // 3D LUT
        TEXTURE_EXTERNAL,     // EGLImage
    };

    class ITexture {
      public:
        ITexture(ITexture&)        = delete;
        ITexture(ITexture&&)       = delete;
        ITexture(const ITexture&&) = delete;
        ITexture(const ITexture&)  = delete;

        virtual ~ITexture() = default;

        virtual void                setTexParameter(GLenum pname, GLint param)                                          = 0;
        virtual void                allocate(const Vector2D& size, uint32_t drmFormat = 0)                              = 0;
        virtual void                update(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const CRegion& damage) = 0;
        virtual void                bind() {};
        virtual void                unbind() {};
        virtual bool                ok();
        virtual bool                isDMA();

        const std::vector<uint8_t>& dataCopy();

        eTextureType                m_type      = TEXTURE_RGBA;
        Vector2D                    m_size      = {};
        eTransform                  m_transform = HYPRUTILS_TRANSFORM_NORMAL;
        bool                        m_opaque    = false;

        uint32_t                    m_drmFormat     = 0; // for shm
        bool                        m_isSynchronous = false;

        // CM
        NColorManagement::PImageDescription m_imageDescription;

        // TODO move to GLTexture
        GLuint m_texID   = 0;
        GLenum magFilter = GL_LINEAR; // useNearestNeighbor overwrites these
        GLenum minFilter = GL_LINEAR;

      protected:
        ITexture() = default;
        ITexture(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size, bool keepDataCopy = false, bool opaque = false);
        ITexture(std::span<const float> lut3D, size_t N);

        bool                 m_keepDataCopy = false;
        std::vector<uint8_t> m_dataCopy;
    };
}