| 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 | |
| 28 | class Handle(OpenGl_Context); |
| 29 | class OpenGl_Context; |
| 30 | class Image_PixMap; |
| 31 | |
| 32 | //! Texture resource. |
| 33 | class OpenGl_Texture : public OpenGl_Resource |
| 34 | { |
| 35 | |
| 36 | public: |
| 37 | |
| 38 | //! Helpful constants |
| 39 | static const GLuint NO_TEXTURE = 0; |
| 40 | |
| 41 | public: |
| 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 | |
| 90 | protected: |
| 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 | |
| 101 | public: |
| 102 | |
| 103 | DEFINE_STANDARD_RTTI(OpenGl_Texture) // Type definition |
| 104 | |
| 105 | }; |
| 106 | |
| 107 | #endif // _OpenGl_Texture_H__ |