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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:
58  void PrintSelf(ostream& os, vtkIndent indent);
59 
64  virtual void Render(const vtkRenderState *s);
65 
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 
134 
140 
144  void CheckCompilation(unsigned int fragmentShader);
145 
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&) VTK_DELETE_FUNCTION;
220  void operator=(const vtkDepthPeelingPass&) VTK_DELETE_FUNCTION;
221 };
222 
223 #endif
Implement an Order Independent Transparency render pass.
void CheckCompilation(unsigned int fragmentShader)
Check the compilation status of some fragment shader source.
virtual void SetTranslucentPass(vtkRenderPass *translucentPass)
vtkDepthPeelingPass()
Is rendering at translucent geometry stage using depth peeling and rendering a layer other than the f...
int RenderPeel(const vtkRenderState *s, int layer)
Render a peel layer.
vtkShaderProgram2 * Prog
int MaximumNumberOfPeels
In case of depth peeling, define the maximum number of peeling layers.
double OcclusionRatio
In case of use of depth peeling technique for rendering translucent material, define the threshold un...
static vtkDepthPeelingPass * New()
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
int ViewportX
Cache viewport values for depth peeling.
void ReleaseGraphicsResources(vtkWindow *w)
Release graphics resources and ask components to release their own resources.
virtual ~vtkDepthPeelingPass()
Destructor.
virtual void Render(const vtkRenderState *s)
Perform rendering according to a render state s.
vtkRenderPass * TranslucentPass
void CheckSupport(vtkOpenGLRenderWindow *w)
Check if depth peeling is supported by the current OpenGL context.
unsigned int TransparentLayerZ
vtkDepthPeelingPassLayerList * LayerList
Used by the depth peeling technique to store the transparency layers.
unsigned int DepthFormat
Actual depth format: vtkgl::DEPTH_COMPONENT16_ARB or vtkgl::DEPTH_COMPONENT24_ARB.
a simple class to control print indentation
Definition: vtkIndent.h:40
OpenGL rendering window.
Perform part of the rendering of a vtkRenderer.
Definition: vtkRenderPass.h:59
Context in which a vtkRenderPass will render.
GLSL Shader.
Definition: vtkShader2.h:63
record modification and/or execution time
Definition: vtkTimeStamp.h:36
window superclass for vtkRenderWindow
Definition: vtkWindow.h:35
vtkSetMacro(IgnoreDriverBugs, bool)
Updates the extensions string.