shadingpass.h

#ifndef SHADINGPASS_H
#define SHADINGPASS_H

#include "renderpass.h"
#include "camera.h"

class ShadingPass : public RenderPass
{
public:
    ShadingPass();
    ~ShadingPass();
    void render() override;
    void cleanup() override;

    void setDepthMapInput(TextureChannel &textureChannel);

    void setColorMapInput(TextureChannel &textureChannel);

    void setNormalMapInput(TextureChannel &textureChannel);

    TextureChannel &getShadedOutput();

    bool shadedImageToScreen();
    void removeInput()override;
    void updateResolution() override;

    static void linkVMat(QMatrix4x4 &v);

    static void linkInvProjMat(QMatrix4x4 &ip);
private:
    TextureChannel *depthMapIn, *normalMapIn, *colorMapIn, *shadedImageOut;
    GLuint fbo;
    static GLuint vertexShader, fragmentShader, shaderProgram,
        loc_depthMap, loc_colorTex, loc_normalTex, loc_invProj, loc_shininess, loc_ambient,
        loc_lightPos, loc_lightCol, loc_lightIntens, loc_lightCount;
    static QMatrix4x4 *vMat, *invProjMat;

    static unsigned char instanceCounter;
    bool initialized;

    bool generateFBO();
    void removeFBO();
    bool init();
    static bool initShaders();
    static void cleanupShaders();
};

#endif // SHADINGPASS_H