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139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkOpenGLProjectedTetrahedraMapper.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/*
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* Copyright 2003 Sandia Corporation.
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* Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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* license for use of this work by or on behalf of the
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* U.S. Government. Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that this Notice and any
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* statement of authorship are reproduced on all copies.
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*/
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/**
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* @class vtkOpenGLProjectedTetrahedraMapper
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* @brief OpenGL implementation of PT
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*
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* @bug
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* This mapper relies highly on the implementation of the OpenGL pipeline.
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* A typical hardware driver has lots of options and some settings can
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* cause this mapper to produce artifacts.
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*
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*/
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#ifndef vtkOpenGLProjectedTetrahedraMapper_h
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#define vtkOpenGLProjectedTetrahedraMapper_h
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#include "vtkProjectedTetrahedraMapper.h"
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#include "vtkRenderingVolumeOpenGL2Module.h" // For export macro
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#include "vtkOpenGLHelper.h" // used for ivars
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class vtkVisibilitySort;
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class vtkUnsignedCharArray;
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class vtkFloatArray;
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class vtkRenderWindow;
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class vtkOpenGLFramebufferObject;
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class vtkOpenGLRenderWindow;
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class vtkOpenGLVertexBufferObject;
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class VTKRENDERINGVOLUMEOPENGL2_EXPORT vtkOpenGLProjectedTetrahedraMapper
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: public vtkProjectedTetrahedraMapper
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{
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public:
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vtkTypeMacro(vtkOpenGLProjectedTetrahedraMapper, vtkProjectedTetrahedraMapper);
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static vtkOpenGLProjectedTetrahedraMapper* New();
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void PrintSelf(ostream& os, vtkIndent indent) override;
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void ReleaseGraphicsResources(vtkWindow* window) override;
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void Render(vtkRenderer* renderer, vtkVolume* volume) override;
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//@{
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/**
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* Set/get whether to use floating-point rendering buffers rather
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* than the default.
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*/
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vtkSetMacro(UseFloatingPointFrameBuffer, bool);
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vtkGetMacro(UseFloatingPointFrameBuffer, bool);
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vtkBooleanMacro(UseFloatingPointFrameBuffer, bool);
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//@}
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/**
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* Return true if the rendering context provides
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* the nececessary functionality to use this class.
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*/
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bool IsSupported(vtkRenderWindow* context) override;
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protected:
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vtkOpenGLProjectedTetrahedraMapper();
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~vtkOpenGLProjectedTetrahedraMapper() override;
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void Initialize(vtkRenderer* ren);
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bool Initialized;
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int CurrentFBOWidth, CurrentFBOHeight;
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bool AllocateFOResources(vtkRenderer* ren);
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bool CanDoFloatingPointFrameBuffer;
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bool FloatingPointFrameBufferResourcesAllocated;
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bool UseFloatingPointFrameBuffer;
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bool HasHardwareSupport;
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vtkUnsignedCharArray* Colors;
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int UsingCellColors;
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vtkFloatArray* TransformedPoints;
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float MaxCellSize;
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vtkTimeStamp InputAnalyzedTime;
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vtkTimeStamp ColorsMappedTime;
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// The VBO and its layout.
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vtkOpenGLVertexBufferObject* VBO;
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// Structures for the various cell types we render.
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vtkOpenGLHelper Tris;
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int GaveError;
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vtkVolumeProperty* LastProperty;
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vtkOpenGLFramebufferObject* Framebuffer;
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float* SqrtTable;
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float SqrtTableBias;
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virtual void ProjectTetrahedra(
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vtkRenderer* renderer, vtkVolume* volume, vtkOpenGLRenderWindow* renWin);
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float GetCorrectedDepth(float x, float y, float z1, float z2,
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const float inverse_projection_mat[16], int use_linear_depth_correction,
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float linear_depth_correction);
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/**
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* Update progress ensuring that OpenGL state is saved and restored before
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* invoking progress.
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*/
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void GLSafeUpdateProgress(double value, vtkOpenGLRenderWindow* context);
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private:
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vtkOpenGLProjectedTetrahedraMapper(const vtkOpenGLProjectedTetrahedraMapper&) = delete;
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void operator=(const vtkOpenGLProjectedTetrahedraMapper&) = delete;
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class vtkInternals;
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vtkInternals* Internals;
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};
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#endif
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