DeferredLightingShaderTerrainImplementation.h

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#pragma once
 
#include <string>
 
#include <tdme/tdme.h>
#include <tdme/engine/fwd-tdme.h>
#include <tdme/engine/subsystems/lighting/LightingShaderBaseImplementation.h>
#include <tdme/engine/subsystems/renderer/fwd-tdme.h>
 
using tdme::engine::subsystems::lighting::LightingShaderBaseImplementation;
 
using tdme::engine::Texture;
using tdme::engine::subsystems::renderer::Renderer;
 
/**
 * Lighting shader implementation
 * @author Andreas Drewke
 */
class tdme::engine::subsystems::lighting::DeferredLightingShaderTerrainImplementation: public LightingShaderBaseImplementation
{
public:
    // forbid class copy
    FORBID_CLASS_COPY(DeferredLightingShaderTerrainImplementation)
 
    /**
     * Public constructor
     * @param renderer renderer
     */
    DeferredLightingShaderTerrainImplementation(Renderer* renderer);
 
    /**
     * @return if supported by renderer
     * @param renderer renderer
     */
    static bool isSupported(Renderer* renderer);
 
    // overridden methods
    virtual const string getId() override;
    virtual void initialize() override;
    virtual void registerShader() override;
    virtual void useProgram(Engine* engine, int contextIdx) override;
    virtual void unUseProgram(int contextIdx) override;
    virtual void updateMatrices(Renderer* renderer, int contextIdx) override;
    virtual void updateShaderParameters(Renderer* renderer, int contextIdx) override;
    virtual void unloadTextures() override;
    virtual void loadTextures(const string& pathName) override;
 
private:
    int32_t uniformModelMatrix { -1 };
    int32_t uniformGrasTextureUnit { -1 };
    int32_t uniformDirtTextureUnit { -1 };
    int32_t uniformSnowTextureUnit { -1 };
    int32_t uniformStoneTextureUnit { -1 };
    Texture* grasTexture { nullptr };
    Texture* dirtTexture { nullptr };
    Texture* snowTexture { nullptr };
    Texture* stoneTexture { nullptr };
    int32_t grasTextureId { 0 };
    int32_t dirtTextureId { 0 };
    int32_t snowTextureId { 0 };
    int32_t stoneTextureId { 0 };
 
protected:
    string additionalDefinitions;
 
};