MeshRenderingStage.h

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/*
 *  Copyright (C) 2010 - 2015 Leonid Kostrykin
 *
 *  Chair of Medical Engineering (mediTEC)
 *  RWTH Aachen University
 *  Pauwelsstr. 20
 *  52074 Aachen
 *  Germany
 *
 */
 
#ifndef MESHRENDERINGSTAGE_H_6014714286
#define MESHRENDERINGSTAGE_H_6014714286
 
#include <Carna/base/GeometryStage.h>
#include <Carna/base/Renderable.h>
#include <Carna/base/RenderState.h>
#include <Carna/base/RenderTask.h>
#include <Carna/base/ShaderUniform.h>
#include <Carna/base/Material.h>
#include <Carna/base/ManagedMesh.h>
 
namespace Carna
{
 
namespace base
{
 
 
 
// ----------------------------------------------------------------------------------
// MeshRenderingStageBase
// ----------------------------------------------------------------------------------
 
class CARNA_LIB MeshRenderingStageBase
{
 
public:
 
    MeshRenderingStageBase( unsigned int geometryType );
 
    virtual ~MeshRenderingStageBase();
 
    const static unsigned int ROLE_DEFAULT_MESH = 0;
    
    const static unsigned int ROLE_DEFAULT_MATERIAL = 1;
 
    const unsigned int geometryType;
 
}; // MeshRenderingStageBase
 
 
 
// ----------------------------------------------------------------------------------
// MeshRenderingStage
// ----------------------------------------------------------------------------------
 
template< typename RenderableCompare >
class MeshRenderingStage : public GeometryStage< RenderableCompare >, public MeshRenderingStageBase
{
 
    RenderTask* renderTask;
 
public:
 
    MeshRenderingStage( unsigned int geometryType );
    
    MeshRenderingStage* clone() const override;
 
    virtual void renderPass( const math::Matrix4f& viewTransform, RenderTask& rt, const Viewport& vp ) override;
 
protected:
 
    virtual void render( const Renderable& renderable ) override;
 
}; // MeshRenderingStage
 
 
template< typename RenderableCompare >
MeshRenderingStage< RenderableCompare >::MeshRenderingStage( unsigned int geometryType )
    : GeometryStage< RenderableCompare >( geometryType )
    , MeshRenderingStageBase( geometryType )
{
}
 
 
template< typename RenderableCompare >
MeshRenderingStage< RenderableCompare >* MeshRenderingStage< RenderableCompare >::clone() const
{
    typedef MeshRenderingStage< RenderableCompare > MyType;
    MyType* const result = new MyType( MeshRenderingStageBase::geometryType );
    result->setEnabled( this->isEnabled() );
    return result;
}
 
 
template< typename RenderableCompare >
void MeshRenderingStage< RenderableCompare >::renderPass( const math::Matrix4f& viewTransform, RenderTask& rt, const Viewport& vp )
{
    renderTask = &rt;
    GeometryStage< RenderableCompare >::renderPass( viewTransform, rt, vp );
    renderTask = nullptr;
}
 
 
template< typename RenderableCompare >
void MeshRenderingStage< RenderableCompare >::render( const Renderable& renderable )
{
    RenderState rs;
    const Material& material = static_cast< Material& >( renderable.geometry().feature( ROLE_DEFAULT_MATERIAL ) );
    this->videoResource( material ).activate( rs );
 
    ShaderUniform< math::Matrix4f >( "modelView", renderable.modelViewTransform() ).upload();
    ShaderUniform< math::Matrix4f >( "projection", renderTask->projection ).upload();
    ShaderUniform< math::Matrix4f >( "modelViewProjection", renderTask->projection * renderable.modelViewTransform() ).upload();
    ShaderUniform< math::Matrix4f >( "normalsView", renderable.viewModelTransform().transpose() ).upload();
 
    const ManagedMeshBase& mesh = static_cast< ManagedMeshBase& >( renderable.geometry().feature( ROLE_DEFAULT_MESH ) );
    this->videoResource( mesh ).get().render();
}
 
 
 
}  // namespace Carna :: base
 
}  // namespace Carna
 
#endif // MESHRENDERINGSTAGE_H_6014714286