icc_shader.h

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/*
    SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once
 
#include <QMatrix4x4>
#include <QSizeF>
#include <memory>
 
namespace KWin
{
 
class IccProfile;
class GLShader;
class GlLookUpTable;
class GlLookUpTable3D;
class GLTexture;
 
class IccShader
{
public:
    explicit IccShader();
    ~IccShader();
 
    GLShader *shader() const;
    void setUniforms(const std::shared_ptr<IccProfile> &profile, float sdrBrightness, const QVector3D &channelFactors);
 
private:
    bool setProfile(const std::shared_ptr<IccProfile> &profile);
 
    std::unique_ptr<GLShader> m_shader;
    std::shared_ptr<IccProfile> m_profile;
 
    QMatrix4x4 m_toXYZD50;
    std::unique_ptr<GlLookUpTable> m_B;
    QMatrix4x4 m_matrix2;
    std::unique_ptr<GlLookUpTable> m_M;
    std::unique_ptr<GlLookUpTable3D> m_C;
    std::unique_ptr<GlLookUpTable> m_A;
    struct Locations
    {
        int src;
        int sdrBrightness;
        int toXYZD50;
        int bsize;
        int bsampler;
        int matrix2;
        int msize;
        int msampler;
        int csize;
        int csampler;
        int asize;
        int asampler;
    };
    Locations m_locations;
};
 
}