0023722: stack overflow during reading IGES in Test Harness
[occt.git] / src / OpenGl / OpenGl_Texture.hxx
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bf75be98 1// Created by: Kirill GAVRILOV
2// Copyright (c) 2012 OPEN CASCADE SAS
3//
4// The content of this file is subject to the Open CASCADE Technology Public
5// License Version 6.5 (the "License"). You may not use the content of this file
6// except in compliance with the License. Please obtain a copy of the License
7// at http://www.opencascade.org and read it completely before using this file.
8//
9// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
10// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
11//
12// The Original Code and all software distributed under the License is
13// distributed on an "AS IS" basis, without warranty of any kind, and the
14// Initial Developer hereby disclaims all such warranties, including without
15// limitation, any warranties of merchantability, fitness for a particular
16// purpose or non-infringement. Please see the License for the specific terms
17// and conditions governing the rights and limitations under the License.
18
19#ifndef _OpenGl_Texture_H__
20#define _OpenGl_Texture_H__
21
22#include <OpenGl_GlCore13.hxx>
23#include <OpenGl_Resource.hxx>
24#include <Handle_OpenGl_Texture.hxx>
25#include <Graphic3d_TypeOfTexture.hxx>
26#include <Handle_Graphic3d_TextureParams.hxx>
27
28class Handle(OpenGl_Context);
29class OpenGl_Context;
30class Image_PixMap;
31
32//! Texture resource.
33class OpenGl_Texture : public OpenGl_Resource
34{
35
36public:
37
38 //! Helpful constants
39 static const GLuint NO_TEXTURE = 0;
40
41public:
42
43 //! Create uninitialized VBO.
44 Standard_EXPORT OpenGl_Texture (const Handle(Graphic3d_TextureParams)& theParams = NULL);
45
46 //! Destroy object.
47 Standard_EXPORT virtual ~OpenGl_Texture();
48
49 //! @return true if current object was initialized
50 inline bool IsValid() const
51 {
52 return myTextureId != NO_TEXTURE;
53 }
54
55 //! @return target to which the texture is bound (GL_TEXTURE_1D, GL_TEXTURE_2D)
56 inline GLenum GetTarget() const
57 {
58 return myTarget;
59 }
60
61 //! Creates Texture id if not yet generated.
62 //! Data should be initialized by another method.
63 Standard_EXPORT bool Create (const Handle(OpenGl_Context)& theCtx);
64
65 //! Destroy object - will release GPU memory if any.
66 Standard_EXPORT virtual void Release (const OpenGl_Context* theCtx);
67
68 //! Bind this Texture to specified unit.
69 Standard_EXPORT void Bind (const Handle(OpenGl_Context)& theCtx,
70 const GLenum theTextureUnit = GL_TEXTURE0) const;
71
72 //! Unbind texture from specified unit.
73 Standard_EXPORT void Unbind (const Handle(OpenGl_Context)& theCtx,
74 const GLenum theTextureUnit = GL_TEXTURE0) const;
75
76 //! Notice that texture will be unbound after this call.
77 Standard_EXPORT bool Init (const Handle(OpenGl_Context)& theCtx,
78 const Image_PixMap& theImage,
79 const Graphic3d_TypeOfTexture theType);
80
81 //! @return true if texture was generated within mipmaps
82 Standard_EXPORT const Standard_Boolean HasMipmaps() const;
83
84 //! @return assigned texture parameters (not necessary applied)
85 Standard_EXPORT const Handle(Graphic3d_TextureParams)& GetParams() const;
86
87 //! @param texture parameters
88 Standard_EXPORT void SetParams (const Handle(Graphic3d_TextureParams)& theParams);
89
90protected:
91
92 GLuint myTextureId; //!< GL resource ID
93 GLenum myTarget; //!< GL_TEXTURE_1D/GL_TEXTURE_2D
94 GLsizei mySizeX; //!< texture width
95 GLsizei mySizeY; //!< texture height
96 GLint myTextFormat; //!< texture format - GL_RGB, GL_RGBA,...
97 Standard_Boolean myHasMipmaps; //!< flag indicates that texture was uploaded with mipmaps
98
99 Handle(Graphic3d_TextureParams) myParams; //!< texture parameters
100
101public:
102
103 DEFINE_STANDARD_RTTI(OpenGl_Texture) // Type definition
104
105};
106
107#endif // _OpenGl_Texture_H__