PostProcessingShaderSSAOMapImplementation.h

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#pragma once
 
#include <array>
#include <string>
 
#include <tdme/tdme.h>
#include <tdme/engine/fwd-tdme.h>
#include <tdme/engine/subsystems/postprocessing/fwd-tdme.h>
#include <tdme/engine/subsystems/postprocessing/PostProcessingShaderBaseImplementation.h>
#include <tdme/engine/subsystems/renderer/fwd-tdme.h>
 
using std::array;
using std::string;
 
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::Engine;
using tdme::engine::Texture;
 
/**
 * Post processing shader SSAO map generation implementation
 * @author Andreas Drewke
 */
class tdme::engine::subsystems::postprocessing::PostProcessingShaderSSAOMapImplementation: public PostProcessingShaderBaseImplementation
{
public:
    /**
     * Returns if shader is supported on given renderer
     * @param renderer renderer
     * @return if shader is supported
     */
    static bool isSupported(Renderer* renderer);
 
    // forbid class copy
    FORBID_CLASS_COPY(PostProcessingShaderSSAOMapImplementation)
 
    /**
     * Public constructor
     * @param renderer renderer
     */
    PostProcessingShaderSSAOMapImplementation(Renderer* renderer);
 
    // overridden methods
    virtual void initialize() override;
    virtual void useProgram(int contextIdx) override;
    virtual void setShaderParameters(int contextIdx, Engine* engine) override;
    virtual void unloadTextures() override;
    virtual void loadTextures(const string& pathName) override;
 
private:
    array<int32_t, 16> uniformSphere;
    int32_t uniformRandomTextureUnit { -1 };
    int32_t uniformStrength { -1 };
    int32_t uniformArea { -1 };
    int32_t uniformFallOff { -1 };
    int32_t uniformRadius { -1 };
    int32_t uniformSamples { -1 };
    Texture* randomTexture { nullptr };
    int32_t randomTextureId { -1 };
};