PostProcessingShaderImplementation.h

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#pragma once
 
#include <string>
 
#include <tdme/tdme.h>
#include <tdme/engine/fwd-tdme.h>
#include <tdme/engine/subsystems/postprocessing/fwd-tdme.h>
#include <tdme/engine/subsystems/renderer/fwd-tdme.h>
 
using std::string;
 
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::Engine;
using tdme::engine::FrameBuffer;
 
/**
 * Post processing shader program implementation interface
 * @author Andreas Drewke
 */
struct tdme::engine::subsystems::postprocessing::PostProcessingShaderImplementation
{
 
    /**
     * Public destructor
     */
    virtual ~PostProcessingShaderImplementation() {}
 
    /**
     * @return initialized and ready to be used
     */
    virtual bool isInitialized() = 0;
 
    /**
     * Initialize post processing shader
     */
    virtual void initialize() = 0;
 
    /**
     * Use program
     * @param contextIdx context index
     */
    virtual void useProgram(int contextIdx) = 0;
 
    /**
     * Unuse program
     */
    virtual void unUseProgram() = 0;
 
    /**
     * Set source buffer pixel width
     * @param contextIdx context index
     * @param pixelWidth pixel width
     */
    virtual void setBufferPixelWidth(int contextIdx, float pixelWidth) = 0;
 
    /**
     * Set source buffer pixel height
     * @param contextIdx context index
     * @param pixelHeight pixel height
     */
    virtual void setBufferPixelHeight(int contextIdx, float pixelHeight) = 0;
 
    /**
     * Set shader parameters
     * @param contextIdx context index
     * @param engine engine
     */
    virtual void setShaderParameters(int contextIdx, Engine* engine) = 0;
 
    /**
     * Unload textures
     */
    virtual void unloadTextures() = 0;
 
    /**
     * Load textures
     * @param pathName path name
     */
    virtual void loadTextures(const string& pathName) = 0;
};