VTK  9.0.3
vtkOpenGLTexture.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkOpenGLTexture.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 =========================================================================*/
23 #ifndef vtkOpenGLTexture_h
24 #define vtkOpenGLTexture_h
25 
26 #include "vtkRenderingOpenGL2Module.h" // For export macro
27 #include "vtkTexture.h"
28 #include "vtkWeakPointer.h" // needed for vtkWeakPointer.
29 
30 class vtkRenderWindow;
31 class vtkTextureObject;
32 
33 class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLTexture : public vtkTexture
34 {
35 public:
36  static vtkOpenGLTexture* New();
37  vtkTypeMacro(vtkOpenGLTexture, vtkTexture);
38  void PrintSelf(ostream& os, vtkIndent indent) override;
39 
45  void Render(vtkRenderer* ren) override;
46 
50  void Load(vtkRenderer*) override;
51 
52  // Descsription:
53  // Clean up after the rendering is complete.
54  void PostRender(vtkRenderer*) override;
55 
63 
67  void CopyTexImage(int x, int y, int width, int height);
68 
70 
73  vtkGetMacro(IsDepthTexture, int);
74  vtkSetMacro(IsDepthTexture, int);
76 
78 
81  vtkGetMacro(TextureType, int);
82  vtkSetMacro(TextureType, int);
84 
85  vtkGetObjectMacro(TextureObject, vtkTextureObject);
87 
91  int GetTextureUnit() override;
92 
99  int IsTranslucent() override;
100 
101 protected:
103  ~vtkOpenGLTexture() override;
104 
106  vtkWeakPointer<vtkRenderWindow> RenderWindow; // RenderWindow used for previous render
107 
110 
113  int PrevBlendParams[4];
114 
115  // used when the texture exceeds the GL limit
116  unsigned char* ResampleToPowerOfTwo(
117  int& xsize, int& ysize, unsigned char* dptr, int bpp, int maxTexSize);
118 
119 private:
120  vtkOpenGLTexture(const vtkOpenGLTexture&) = delete;
121  void operator=(const vtkOpenGLTexture&) = delete;
122 };
123 
124 #endif
a simple class to control print indentation
Definition: vtkIndent.h:34
OpenGL texture map.
void Load(vtkRenderer *) override
Implement base class method.
int GetTextureUnit() override
Return the texture unit used for this texture.
void CopyTexImage(int x, int y, int width, int height)
copy the renderers read buffer into this texture
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
void ReleaseGraphicsResources(vtkWindow *) override
Release any graphics resources that are being consumed by this texture.
int IsTranslucent() override
Is this Texture Translucent? returns false (0) if the texture is either fully opaque or has only full...
void PostRender(vtkRenderer *) override
Cleans up after the texture rendering to restore the state of the graphics context.
void SetTextureObject(vtkTextureObject *)
unsigned char * ResampleToPowerOfTwo(int &xsize, int &ysize, unsigned char *dptr, int bpp, int maxTexSize)
void Render(vtkRenderer *ren) override
Renders a texture map.
vtkWeakPointer< vtkRenderWindow > RenderWindow
~vtkOpenGLTexture() override
vtkTextureObject * TextureObject
vtkTimeStamp LoadTime
static vtkOpenGLTexture * New()
create a window for renderers to draw into
abstract specification for renderers
Definition: vtkRenderer.h:59
abstracts an OpenGL texture object.
handles properties associated with a texture map
Definition: vtkTexture.h:66
record modification and/or execution time
Definition: vtkTimeStamp.h:33
window superclass for vtkRenderWindow
Definition: vtkWindow.h:35
@ height
Definition: vtkX3D.h:260