rendervideocomponent.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Local Includes
#include "videoplayer.h"
 
// External Includes
#include <component.h>
#include <rendercomponent.h>
#include <nap/resourceptr.h>
#include <rendertexture2d.h>
#include <planemesh.h>
#include <rendertarget.h>
#include <color.h>
#include <materialinstance.h>
#include <renderablemesh.h>
 
namespace nap
{
    // Forward Declares
    class RenderVideoComponentInstance;
 
    class NAPAPI RenderVideoComponent : public RenderableComponent
    {
        RTTI_ENABLE(RenderableComponent)
        DECLARE_COMPONENT(RenderVideoComponent, RenderVideoComponentInstance)
    public:
        ResourcePtr<VideoPlayer>        mVideoPlayer = nullptr;                             
        ResourcePtr<RenderTexture2D>    mOutputTexture = nullptr;                           
        ERasterizationSamples           mRequestedSamples = ERasterizationSamples::One;     
        RGBAColor8                      mClearColor = { 255, 255, 255, 255 };               
    };
 
 
    class NAPAPI RenderVideoComponentInstance : public RenderableComponentInstance
    {
        RTTI_ENABLE(RenderableComponentInstance)
    public:
        RenderVideoComponentInstance(EntityInstance& entity, Component& resource);
 
        virtual bool init(utility::ErrorState& errorState) override;
 
        virtual bool isSupported(nap::CameraComponentInstance& camera) const override;
 
        Texture2D& getOutputTexture();
 
        void draw();
 
    protected:
        virtual void onDraw(IRenderTarget& renderTarget, VkCommandBuffer commandBuffer, const glm::mat4& viewMatrix, const glm::mat4& projectionMatrix) override;
 
    private:
        VideoPlayer*                mPlayer = nullptr;                              
        RenderTexture2D*            mOutputTexture = nullptr;                       
        RGBColorFloat               mClearColor = { 0.0f, 0.0f, 0.0f };             
        RenderTarget                mTarget;                                        
        PlaneMesh                   mPlane;                                         
        MaterialInstance            mMaterialInstance;                              
        MaterialInstanceResource    mMaterialInstanceResource;                      
        RenderableMesh              mRenderableMesh;                                
        RenderService*              mRenderService = nullptr;                       
        UniformMat4Instance*        mModelMatrixUniform = nullptr;                  
        UniformMat4Instance*        mProjectMatrixUniform = nullptr;                
        UniformMat4Instance*        mViewMatrixUniform = nullptr;                   
        UniformStructInstance*      mMVPStruct = nullptr;                           
        Sampler2DInstance*          mYSampler = nullptr;                            
        Sampler2DInstance*          mUSampler = nullptr;                            
        Sampler2DInstance*          mVSampler = nullptr;                            
        glm::mat4x4                 mModelMatrix;                                   
        bool                        mDirty = true;                                  
 
        UniformMat4Instance* ensureUniform(const std::string& uniformName, utility::ErrorState& error);
 
        Sampler2DInstance* ensureSampler(const std::string& samplerName, utility::ErrorState& error);
 
        void videoChanged(VideoPlayer& player);
 
        // Called when video selection changes
        nap::Slot<VideoPlayer&> mVideoChangedSlot = { this, &RenderVideoComponentInstance::videoChanged };
    };
}