OpenGL implementation of a RenderTarget that represents am on-scren viewport. More...
Inheritance diagram for CEGUI::OpenGLViewportTarget:
Collaboration diagram for CEGUI::OpenGLViewportTarget:
Public Member Functions | |
| OpenGLViewportTarget (OpenGLRenderer &owner) | |
| Construct a default OpenGLViewportTarget that uses the currently defined OpenGL viewport as it's initial area. | |
| OpenGLViewportTarget (OpenGLRenderer &owner, const Rect &area) | |
| Construct a OpenGLViewportTarget that uses the specified Rect as it's initial area. More... | |
| bool | isImageryCache () const |
| Return whether the RenderTarget is an implementation that caches actual rendered imagery. More... | |
| Public Member Functions inherited from CEGUI::OpenGLRenderTarget | |
| OpenGLRenderTarget (OpenGLRenderer &owner) | |
| Constructor. | |
| void | draw (const GeometryBuffer &buffer) |
| Draw geometry from the given GeometryBuffer onto the surface that this RenderTarget represents. More... | |
| void | draw (const RenderQueue &queue) |
| Draw geometry from the given RenderQueue onto the surface that this RenderTarget represents. More... | |
| void | setArea (const Rect &area) |
| Set the area for this RenderTarget. The exact action this function will take depends upon what the concrete class is representing. For example, with a 'view port' style RenderTarget, this should set the area that the view port occupies on the display (or rendering window). More... | |
| const Rect & | getArea () const |
| Return the area defined for this RenderTarget. More... | |
| void | activate () |
| Activate the render target and put it in a state ready to be drawn to. More... | |
| void | deactivate () |
| Deactivate the render target after having completed rendering. More... | |
| void | unprojectPoint (const GeometryBuffer &buff, const Vector2 &p_in, Vector2 &p_out) const |
| Take point p_in unproject it and put the result in p_out. Resulting point is local to GeometryBuffer buff. | |
| Public Member Functions inherited from CEGUI::RenderTarget | |
| virtual | ~RenderTarget () |
| Destructor. | |
Additional Inherited Members | |
| Protected Member Functions inherited from CEGUI::OpenGLRenderTarget | |
| virtual void | updateMatrix () const |
| helper that initialises the cached matrix | |
| Protected Attributes inherited from CEGUI::OpenGLRenderTarget | |
| OpenGLRenderer & | d_owner |
| OpenGLRenderer that created this object. | |
| Rect | d_area |
| holds defined area for the RenderTarget | |
| double | d_matrix [16] |
| saved copy of projection matrix | |
| bool | d_matrixValid |
| true if saved matrix is up to date | |
| double | d_viewDistance |
| tracks viewing distance (this is set up at the same time as d_matrix) | |
| Static Protected Attributes inherited from CEGUI::OpenGLRenderTarget | |
| static const double | d_yfov_tan |
| tangent of the y FOV half-angle; used to calculate viewing distance. | |
Detailed Description
OpenGL implementation of a RenderTarget that represents am on-scren viewport.
Constructor & Destructor Documentation
| CEGUI::OpenGLViewportTarget::OpenGLViewportTarget | ( | OpenGLRenderer & | owner, |
| const Rect & | area | ||
| ) |
Construct a OpenGLViewportTarget that uses the specified Rect as it's initial area.
- Parameters
-
area Rect object describing the initial viewport area that should be used for the RenderTarget.
Member Function Documentation
|
virtual |
Return whether the RenderTarget is an implementation that caches actual rendered imagery.
Typically it is expected that texture based RenderTargets would return true in response to this call. Other types of RenderTarget, like view port based targets, will more likely return false.
- Returns
- true if the RenderTarget does cache rendered imagery.
- false if the RenderTarget does not cache rendered imagery.
Implements CEGUI::RenderTarget.
