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0024192: Adding support for shaders to OCCT visualization toolkit
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169
src/OpenGl/OpenGl_ShaderManager.hxx
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169
src/OpenGl/OpenGl_ShaderManager.hxx
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// Created on: 2013-09-26
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// Created by: Denis BOGOLEPOV
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// Copyright (c) 2013 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#ifndef _OpenGl_ShaderManager_HeaderFile
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#define _OpenGl_ShaderManager_HeaderFile
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#include <Graphic3d_ShaderProgram_Handle.hxx>
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#include <NCollection_DataMap.hxx>
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#include <NCollection_Sequence.hxx>
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#include <Handle_OpenGl_ShaderManager.hxx>
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#include <OpenGl_ShaderProgram.hxx>
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#include <OpenGl_ShaderStates.hxx>
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//! List of shader programs.
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typedef NCollection_Sequence<Handle(OpenGl_ShaderProgram)> OpenGl_ShaderProgramList;
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//! Map to declare per-program states of OCCT materials.
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typedef NCollection_DataMap<Handle(OpenGl_ShaderProgram), OpenGl_MaterialState> OpenGl_MaterialStates;
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//! This class is responsible for managing shader programs.
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class OpenGl_ShaderManager : public Standard_Transient
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{
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friend class OpenGl_ShaderProgram;
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public:
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//! Creates new empty shader manager.
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Standard_EXPORT OpenGl_ShaderManager (OpenGl_Context* theContext);
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//! Releases resources of shader manager.
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Standard_EXPORT virtual ~OpenGl_ShaderManager();
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//! Creates new shader program.
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Standard_EXPORT Handle(OpenGl_ShaderProgram) Create (const Handle(Graphic3d_ShaderProgram)& theProxyProgram = NULL);
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//! Unregisters specified shader program.
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Standard_EXPORT void Unregister (Handle(OpenGl_ShaderProgram)& theProgram);
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//! Returns list of registered shader programs.
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Standard_EXPORT const OpenGl_ShaderProgramList& ShaderPrograms() const;
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//! Returns true if no program objects are registered in the manager.
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Standard_EXPORT Standard_Boolean IsEmpty() const;
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DEFINE_STANDARD_RTTI (OpenGl_ShaderManager)
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protected:
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OpenGl_MaterialStates myMaterialStates; //!< Per-program state of OCCT material
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OpenGl_ProjectionState myProjectionState; //!< State of OCCT projection transformation
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OpenGl_ModelWorldState myModelWorldState; //!< State of OCCT model-world transformation
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OpenGl_WorldViewState myWorldViewState; //!< State of OCCT world-view transformation
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OpenGl_LightSourceState myClippingState; //!< State of OCCT clipping planes
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OpenGl_LightSourceState myLightSourceState; //!< State of OCCT light sources
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public:
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//! Returns current state of OCCT light sources.
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Standard_EXPORT const OpenGl_LightSourceState& LightSourceState() const;
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//! Updates state of OCCT light sources.
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Standard_EXPORT void UpdateLightSourceStateTo (const OpenGl_ListOfLight* theLights);
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//! Pushes current state of OCCT light sources to specified program.
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Standard_EXPORT void PushLightSourceState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Returns current state of OCCT projection transform.
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Standard_EXPORT const OpenGl_ProjectionState& ProjectionState() const;
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//! Updates state of OCCT projection transform.
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Standard_EXPORT void UpdateProjectionStateTo (const Tmatrix3& theProjectionMatrix);
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//! Reverts state of OCCT projection transform.
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Standard_EXPORT void RevertProjectionStateTo (const Tmatrix3& theProjectionMatrix);
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//! Pushes current state of OCCT projection transform to specified program.
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Standard_EXPORT void PushProjectionState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Returns current state of OCCT model-world transform.
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Standard_EXPORT const OpenGl_ModelWorldState& ModelWorldState() const;
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//! Updates state of OCCT model-world transform.
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Standard_EXPORT void UpdateModelWorldStateTo (const Tmatrix3& theModelWorldMatrix);
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//! Reverts state of OCCT model-world transform.
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Standard_EXPORT void RevertModelWorldStateTo (const Tmatrix3& theModelWorldMatrix);
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//! Pushes current state of OCCT model-world transform to specified program.
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Standard_EXPORT void PushModelWorldState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Returns current state of OCCT world-view transform.
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Standard_EXPORT const OpenGl_WorldViewState& WorldViewState() const;
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//! Updates state of OCCT world-view transform.
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Standard_EXPORT void UpdateWorldViewStateTo (const Tmatrix3& theWorldViewMatrix);
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//! Reverts state of OCCT world-view transform.
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Standard_EXPORT void RevertWorldViewStateTo (const Tmatrix3& theWorldViewMatrix);
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//! Pushes current state of OCCT world-view transform to specified program.
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Standard_EXPORT void PushWorldViewState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Updates state of OCCT clipping planes.
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Standard_EXPORT void UpdateClippingState();
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//! Reverts state of OCCT clipping planes.
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Standard_EXPORT void RevertClippingState();
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//! Pushes current state of OCCT clipping planes to specified program.
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Standard_EXPORT void PushClippingState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Resets state of OCCT material for all programs.
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Standard_EXPORT void ResetMaterialStates();
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//! Updates state of OCCT material for specified program.
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Standard_EXPORT void UpdateMaterialStateTo (const Handle(OpenGl_ShaderProgram)& theProgram,
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const OpenGl_Element* theAspect);
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//! Pushes current state of OCCT material to specified program.
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Standard_EXPORT void PushMaterialState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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//! Returns current state of OCCT material for specified program.
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Standard_EXPORT const OpenGl_MaterialState* MaterialState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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public:
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//! Pushes current state of OCCT graphics parameters to specified program.
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Standard_EXPORT void PushState (const Handle(OpenGl_ShaderProgram)& theProgram) const;
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protected:
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OpenGl_ShaderProgramList myProgramList; //!< The list of shader programs
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OpenGl_Context* myContext; //!< The OpenGL context
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private:
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Standard_Boolean myIsPP; //!< Is any program object bound (programmable pipeline)?
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};
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#endif // _OpenGl_ShaderManager_HeaderFile
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