/usr/include/oce/OpenGl_Sampler.hxx is in liboce-visualization-dev 0.17.2-2.
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// Created by: Denis BOGOLEPOV
// Copyright (c) 2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef OPENGL_SAMPLER_H
#define OPENGL_SAMPLER_H
#include <OpenGl_Context.hxx>
#include <Handle_OpenGl_Sampler.hxx>
//! Class implements OpenGL sampler object resource that
//! stores the sampling parameters for a texture access.
class OpenGl_Sampler : public OpenGl_Resource
{
public:
//! Helpful constant defining invalid sampler identifier
static const GLuint NO_SAMPLER = 0;
public:
//! Creates new sampler object.
Standard_EXPORT OpenGl_Sampler();
//! Releases resources of sampler object.
Standard_EXPORT virtual ~OpenGl_Sampler();
//! Destroys object - will release GPU memory if any.
Standard_EXPORT virtual void Release (OpenGl_Context* theContext);
//! Initializes sampler object.
Standard_EXPORT Standard_Boolean Init (OpenGl_Context& theContext);
//! Returns true if current object was initialized.
Standard_Boolean IsValid() const
{
return isValidSampler();
}
//! Binds sampler object to the given texture unit.
Standard_EXPORT void Bind (OpenGl_Context& theContext, const GLuint theUnit = 0);
//! Unbinds sampler object from the given texture unit.
Standard_EXPORT void Unbind (OpenGl_Context& theContext, const GLuint theUnit = 0);
//! Sets specific sampler parameter.
Standard_EXPORT void SetParameter (OpenGl_Context& theContext, const GLenum theParam, const GLint theValue);
//! Returns OpenGL sampler ID.
GLuint SamplerID() const
{
return mySamplerID;
}
protected:
//! Checks if sampler object is valid.
Standard_Boolean isValidSampler() const
{
return mySamplerID != NO_SAMPLER;
}
protected:
GLuint mySamplerID; //!< OpenGL sampler object ID
public:
DEFINE_STANDARD_RTTI(OpenGl_Sampler)
};
#endif // OPENGL_SAMPLER_H
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