MeshRenderingStage.hpp

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/*
 *  Copyright (C) 2010 - 2016 Leonid Kostrykin
 *
 *  Chair of Medical Engineering (mediTEC)
 *  RWTH Aachen University
 *  Pauwelsstr. 20
 *  52074 Aachen
 *  Germany
 * 
 * 
 *  Copyright (C) 2021 - 2025 Leonid Kostrykin
 * 
 */
 
#ifndef MESHRENDERINGSTAGE_H_6014714286
#define MESHRENDERINGSTAGE_H_6014714286
 
#include <LibCarna/base/GeometryStage.hpp>
#include <LibCarna/base/Renderable.hpp>
#include <LibCarna/base/RenderState.hpp>
#include <LibCarna/base/RenderTask.hpp>
#include <LibCarna/base/ShaderUniform.hpp>
#include <LibCarna/base/Material.hpp>
#include <LibCarna/base/ManagedMesh.hpp>
 
namespace LibCarna
{
 
namespace base
{
 
 
 
// ----------------------------------------------------------------------------------
// MeshRenderingMixin
// ----------------------------------------------------------------------------------
 
class LIBCARNA MeshRenderingMixin
{
 
public:
 
     MeshRenderingMixin( unsigned int geometryType );
 
    virtual ~MeshRenderingMixin();
 
    const static unsigned int DEFAULT_ROLE_MESH = 0;
    
    const static unsigned int DEFAULT_ROLE_MATERIAL = 1;
 
    const unsigned int geometryType;
 
}; // MeshRenderingMixin
 
 
 
// ----------------------------------------------------------------------------------
// MeshRenderingStage
// ----------------------------------------------------------------------------------
 
template< typename RenderableCompare >
class MeshRenderingStage : public GeometryStage< RenderableCompare >, public MeshRenderingMixin
{
 
    RenderTask* renderTask;
 
public:
 
    MeshRenderingStage( unsigned int geometryType );
 
    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 )
    , MeshRenderingMixin( geometryType )
{
}
 
 
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( DEFAULT_ROLE_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( DEFAULT_ROLE_MESH ) );
    this->videoResource( mesh ).get().render();
}
 
 
 
}  // namespace LibCarna :: base
 
}  // namespace LibCarna
 
#endif // MESHRENDERINGSTAGE_H_6014714286