1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkCompositeZPass.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkCompositeZPass
* @brief Merge depth buffers of processes.
*
* Merge the depth buffers of satellite processes into the root process depth
* buffer. It assumes that all the depth buffers have the same number of bits.
* The depth buffer of the satellite processes are not changed.
*
* This pass requires a OpenGL context that supports texture objects (TO),
* and pixel buffer objects (PBO). If not, it will emit an error message
* and will render its delegate and return.
*
* @sa
* vtkRenderPass
*/
#ifndef vtkCompositeZPass_h
#define vtkCompositeZPass_h
#include "vtkRenderPass.h"
#include "vtkRenderingParallelModule.h" // For export macro
class vtkMultiProcessController;
class vtkPixelBufferObject;
class vtkTextureObject;
class vtkOpenGLRenderWindow;
class vtkOpenGLHelper;
class VTKRENDERINGPARALLEL_EXPORT vtkCompositeZPass : public vtkRenderPass
{
public:
static vtkCompositeZPass* New();
vtkTypeMacro(vtkCompositeZPass, vtkRenderPass);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Perform rendering according to a render state \p s.
* \pre s_exists: s!=0
*/
void Render(const vtkRenderState* s) override;
/**
* Release graphics resources and ask components to release their own
* resources.
* \pre w_exists: w!=0
*/
void ReleaseGraphicsResources(vtkWindow* w) override;
//@{
/**
* Controller
* If it is NULL, nothing will be rendered and a warning will be emitted.
* Initial value is a NULL pointer.
*/
vtkGetObjectMacro(Controller, vtkMultiProcessController);
virtual void SetController(vtkMultiProcessController* controller);
//@}
/**
* Is the pass supported by the OpenGL context?
*/
bool IsSupported(vtkOpenGLRenderWindow* context);
protected:
/**
* Default constructor. Controller is set to NULL.
*/
vtkCompositeZPass();
/**
* Destructor.
*/
~vtkCompositeZPass() override;
/**
* Create program for texture mapping.
* \pre context_exists: context!=0
* \pre Program_void: this->Program==0
* \post Program_exists: this->Program!=0
*/
void CreateProgram(vtkOpenGLRenderWindow* context);
vtkMultiProcessController* Controller;
vtkPixelBufferObject* PBO;
vtkTextureObject* ZTexture;
vtkOpenGLHelper* Program;
float* RawZBuffer;
size_t RawZBufferSize;
private:
vtkCompositeZPass(const vtkCompositeZPass&) = delete;
void operator=(const vtkCompositeZPass&) = delete;
};
#endif
|
