VTK  9.3.20240328
vtkOpenGLRenderPass.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
3 
12 #ifndef vtkOpenGLRenderPass_h
13 #define vtkOpenGLRenderPass_h
14 
15 #include "vtkRenderPass.h"
16 #include "vtkRenderingOpenGL2Module.h" // For export macro
17 
18 #include <string> // For std::string
19 
20 VTK_ABI_NAMESPACE_BEGIN
21 class vtkAbstractMapper;
23 class vtkProp;
24 class vtkShaderProgram;
26 
27 class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLRenderPass : public vtkRenderPass
28 {
29 public:
31  void PrintSelf(ostream& os, vtkIndent indent) override;
32 
34 
39  virtual bool PreReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
40  std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop);
41  virtual bool PostReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
42  std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop);
44 
49  virtual bool SetShaderParameters(vtkShaderProgram* program, vtkAbstractMapper* mapper,
50  vtkProp* prop, vtkOpenGLVertexArrayObject* VAO = nullptr);
51 
60 
65 
69  vtkSetMacro(ActiveDrawBuffers, unsigned int);
70  vtkGetMacro(ActiveDrawBuffers, unsigned int);
71 
72 protected:
75 
79  void PreRender(const vtkRenderState* s);
80 
85  virtual void PreRenderProp(vtkProp* prop);
86 
90  void PostRender(const vtkRenderState* s);
91 
96  virtual void PostRenderProp(vtkProp* prop);
97 
98  unsigned int ActiveDrawBuffers = 0;
99 
100 private:
101  vtkOpenGLRenderPass(const vtkOpenGLRenderPass&) = delete;
102  void operator=(const vtkOpenGLRenderPass&) = delete;
103 };
104 
105 VTK_ABI_NAMESPACE_END
106 #endif // vtkOpenGLRenderPass_h
abstract class specifies interface to map data
a simple class to control print indentation
Definition: vtkIndent.h:108
Key for vtkObjectBase vector values.
Abstract render pass with shader modifications.
virtual bool PostReplaceShaderValues(std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper *mapper, vtkProp *prop)
Use vtkShaderProgram::Substitute to replace.
void PostRender(const vtkRenderState *s)
Call after rendering to clean up the actors' information keys.
void PreRender(const vtkRenderState *s)
Call before rendering to update the actors' information keys.
virtual bool SetShaderParameters(vtkShaderProgram *program, vtkAbstractMapper *mapper, vtkProp *prop, vtkOpenGLVertexArrayObject *VAO=nullptr)
Update the uniforms of the shader program.
virtual bool PreReplaceShaderValues(std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper *mapper, vtkProp *prop)
Use vtkShaderProgram::Substitute to replace.
static vtkInformationObjectBaseVectorKey * RenderPasses()
Key containing information about the current pass.
virtual void PostRenderProp(vtkProp *prop)
Called in PreRender to give a chance to subclasses to clean up information keys.
~vtkOpenGLRenderPass() override
virtual vtkMTimeType GetShaderStageMTime()
For multi-stage render passes that need to change shader code during a single pass,...
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
virtual void PreRenderProp(vtkProp *prop)
Called in PreRender to give a chance to subclasses to set additonal information keys.
The VertexArrayObject class uses, or emulates, vertex array objects.
abstract superclass for all actors, volumes and annotations
Definition: vtkProp.h:65
Perform part of the rendering of a vtkRenderer.
Definition: vtkRenderPass.h:49
Context in which a vtkRenderPass will render.
The ShaderProgram uses one or more Shader objects.
@ string
Definition: vtkX3D.h:490
vtkTypeUInt32 vtkMTimeType
Definition: vtkType.h:270