RenderableProceduralParticleEffectEntityItem.h

//
//  RenderableProceduralParticleEffectEntityItem.h
//  interface/src/entities
//
//  Created by HifiExperiements on 11/19/23
//  Copyright 2023 Overte e.V.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
 
#ifndef hifi_RenderableProceduralParticleEffectEntityItem_h
#define hifi_RenderableProceduralParticleEffectEntityItem_h
 
#include "RenderableEntityItem.h"
#include <ProceduralParticleEffectEntityItem.h>
 
#include <procedural/Procedural.h>
 
namespace render { namespace entities {
 
class ProceduralParticleEffectEntityRenderer : public TypedEntityRenderer<ProceduralParticleEffectEntityItem> {
    using Parent = TypedEntityRenderer<ProceduralParticleEffectEntityItem>;
    friend class EntityRenderer;
 
public:
    ProceduralParticleEffectEntityRenderer(const EntityItemPointer& entity);
 
    virtual void renderSimulate(RenderArgs* args) override;
 
    ComponentMode getFadeOutMode() const override { return ComponentMode::COMPONENT_MODE_DISABLED; }
 
protected:
    virtual void doRenderUpdateSynchronousTyped(const ScenePointer& scene, Transaction& transaction, const TypedEntityPointer& entity) override;
    virtual void doRenderUpdateAsynchronousTyped(const TypedEntityPointer& entity) override;
 
    bool isTransparent() const override;
    virtual ItemKey getKey() override;
    virtual ShapeKey getShapeKey() override;
    virtual void doRender(RenderArgs* args) override;
 
private:
    using TexturePointer = gpu::TexturePointer;
    using FramebufferPointer = gpu::FramebufferPointer;
 
    void recreateParticles();
 
    QString _particleUpdateData;
    Procedural _updateProcedural;
    QString _particleRenderData;
    Procedural _renderProcedural { false }; // No AA on Particles
 
    size_t _numParticles { 0 };
    size_t _particlePropTextureDim { 128 }; // 2^ceil(log2(sqrt(10,000)))
    size_t _numTrianglesPerParticle { particle::DEFAULT_NUM_TRIS_PER };
    size_t _numUpdateProps { particle::DEFAULT_NUM_UPDATE_PROPS };
    bool _transparent { false };
 
    std::array<FramebufferPointer, 2> _particleBuffers;
    bool _evenPass { true };
};
 
} } // namespace
 
#endif // hifi_RenderableProceduralParticleEffectEntityItem_h