VTK
vtkDepthPeelingPass.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkDepthPeelingPass.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
42 #ifndef vtkDepthPeelingPass_h
43 #define vtkDepthPeelingPass_h
44 
45 #include "vtkRenderingOpenGLModule.h" // For export macro
46 #include "vtkRenderPass.h"
47 
49 class vtkDepthPeelingPassLayerList; // Pimpl
50 class vtkShaderProgram2;
51 class vtkShader2;
52 
53 class VTKRENDERINGOPENGL_EXPORT vtkDepthPeelingPass : public vtkRenderPass
54 {
55 public:
56  static vtkDepthPeelingPass *New();
58  void PrintSelf(ostream& os, vtkIndent indent) override;
59 
64  void Render(const vtkRenderState *s) override;
65 
71  void ReleaseGraphicsResources(vtkWindow *w) override;
72 
74 
80  vtkGetObjectMacro(TranslucentPass,vtkRenderPass);
81  virtual void SetTranslucentPass(vtkRenderPass *translucentPass);
83 
85 
94  vtkSetClampMacro(OcclusionRatio,double,0.0,0.5);
95  vtkGetMacro(OcclusionRatio,double);
97 
99 
104  vtkSetMacro(MaximumNumberOfPeels,int);
105  vtkGetMacro(MaximumNumberOfPeels,int);
107 
109 
113  vtkGetMacro(LastRenderingUsedDepthPeeling,bool);
115 
124  protected:
129 
133  ~vtkDepthPeelingPass() override;
134 
139  void CheckSupport(vtkOpenGLRenderWindow *w);
140 
144  void CheckCompilation(unsigned int fragmentShader);
145 
153  int RenderPeel(const vtkRenderState *s,
154  int layer);
155 
158  bool IsChecked;
160 
162 
170 
175  unsigned int DepthFormat;
176 
187 
194 
196 
200  vtkDepthPeelingPassLayerList *LayerList;
201 
202  unsigned int OpaqueLayerZ;
203  unsigned int TransparentLayerZ;
204 // unsigned int ProgramShader;
205 
206  // Is rendering at translucent geometry stage using depth peeling and
207  // rendering a layer other than the first one? (Boolean value)
208  // If so, the uniform variables UseTexture and Texture can be set.
209  // (Used by vtkOpenGLProperty or vtkOpenGLTexture)
211 
214 
215  int ShadowTexUnit; // texture unit allocated for the shadow texture
216  int OpaqueShadowTexUnit; // texture unit allocated for the opaque shadow tex.
217 
218  private:
219  vtkDepthPeelingPass(const vtkDepthPeelingPass&) = delete;
220  void operator=(const vtkDepthPeelingPass&) = delete;
221 };
222 
223 #endif
OpenGL rendering window.
GLSL Shader.
Definition: vtkShader2.h:62
vtkRenderPass * TranslucentPass
Implement an Order Independent Transparency render pass.
int ViewportHeight
Cache viewport values for depth peeling.
vtkShaderProgram2 * Prog
record modification and/or execution time
Definition: vtkTimeStamp.h:35
int ViewportX
Cache viewport values for depth peeling.
unsigned int TransparentLayerZ
unsigned int DepthFormat
Actual depth format: vtkgl::DEPTH_COMPONENT16_ARB or vtkgl::DEPTH_COMPONENT24_ARB.
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37
double OcclusionRatio
In case of use of depth peeling technique for rendering translucent material, define the threshold un...
Context in which a vtkRenderPass will render.
a simple class to control print indentation
Definition: vtkIndent.h:39
int ViewportWidth
Cache viewport values for depth peeling.
vtkSetMacro(IgnoreDriverBugs, bool)
When set known driver bugs are ignored during driver feature detection.
int MaximumNumberOfPeels
In case of depth peeling, define the maximum number of peeling layers.
virtual void Render(const vtkRenderState *s)=0
Perform rendering according to a render state s.
virtual void ReleaseGraphicsResources(vtkWindow *w)
Release graphics resources and ask components to release their own resources.
int ViewportY
Cache viewport values for depth peeling.
vtkDepthPeelingPassLayerList * LayerList
Used by the depth peeling technique to store the transparency layers.
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Perform part of the rendering of a vtkRenderer.
Definition: vtkRenderPass.h:58
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.