VTK  9.3.0
vtkOpenGLTexture.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
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 VTK_ABI_NAMESPACE_BEGIN
31 class vtkRenderWindow;
32 class vtkTextureObject;
33 
34 class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLTexture : public vtkTexture
35 {
36 public:
37  static vtkOpenGLTexture* New();
38  vtkTypeMacro(vtkOpenGLTexture, vtkTexture);
39  void PrintSelf(ostream& os, vtkIndent indent) override;
40 
46  void Render(vtkRenderer* ren) override;
47 
51  void Load(vtkRenderer*) override;
52 
53  // Descsription:
54  // Clean up after the rendering is complete.
55  void PostRender(vtkRenderer*) override;
56 
64 
68  void CopyTexImage(int x, int y, int width, int height);
69 
71 
74  vtkGetMacro(IsDepthTexture, int);
75  vtkSetMacro(IsDepthTexture, int);
77 
79 
82  vtkGetMacro(TextureType, int);
83  vtkSetMacro(TextureType, int);
85 
86  vtkGetObjectMacro(TextureObject, vtkTextureObject);
88 
92  int GetTextureUnit() override;
93 
100  int IsTranslucent() override;
101 
102 protected:
104  ~vtkOpenGLTexture() override;
105 
107  vtkWeakPointer<vtkRenderWindow> RenderWindow; // RenderWindow used for previous render
108 
111 
114  int PrevBlendParams[4];
115 
116  // used when the texture exceeds the GL limit
117  unsigned char* ResampleToPowerOfTwo(
118  int& xsize, int& ysize, unsigned char* dptr, int bpp, int maxDimGL);
119 
120 private:
121  vtkOpenGLTexture(const vtkOpenGLTexture&) = delete;
122  void operator=(const vtkOpenGLTexture&) = delete;
123 };
124 
125 VTK_ABI_NAMESPACE_END
126 #endif
a simple class to control print indentation
Definition: vtkIndent.h:38
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.
unsigned char * ResampleToPowerOfTwo(int &xsize, int &ysize, unsigned char *dptr, int bpp, int maxDimGL)
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 *)
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:71
abstracts an OpenGL texture object.
handles properties associated with a texture map
Definition: vtkTexture.h:67
record modification and/or execution time
Definition: vtkTimeStamp.h:34
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37
@ height
Definition: vtkX3D.h:254