mirror of
https://github.com/ultimatepp/ultimatepp.git
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155 lines
4.4 KiB
C++
155 lines
4.4 KiB
C++
#include "GLCtrl.h"
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NAMESPACE_UPP
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#ifdef PLATFORM_X11
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/////////////////////////////////////////////////////////////////////////////////////////
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// Destructor
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GLCtrl::GLPane::~GLPane()
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{
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// If glx context is still there, destroy it
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// That can happen on unclean exit
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if(WindowContext)
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{
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glXDestroyContext( (Display *)Xdisplay, WindowContext );
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WindowContext = NULL;
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}
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} // END Destructor class GLCtrl::GLPane
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/////////////////////////////////////////////////////////////////////////////////////////
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// Ovverridden method to choose the correct visual
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XVisualInfo *GLCtrl::GLPane::CreateVisual(void)
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{
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Vector<int> visual;
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visual << GLX_RGBA << GLX_DEPTH_SIZE << ctrl->depthSize;
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if( ctrl->stencilSize > 0 )
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visual << GLX_STENCIL_SIZE << ctrl->stencilSize;
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if( ctrl->doubleBuffering )
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visual << GLX_DOUBLEBUFFER;
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if( ctrl->multiSampleBuffering && ctrl->numberOfSamples > 1 )
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{
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visual << GLX_SAMPLE_BUFFERS_ARB << 1 << GLX_SAMPLES_ARB << ctrl->numberOfSamples;
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}
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visual << None;
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// Try to find a visual
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XVisualInfo *visualInfo = NULL;
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visualInfo = glXChooseVisual( (Display*)Xdisplay, DefaultScreen(Xdisplay), visual );
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if( visualInfo == NULL )
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{
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SetError(true);
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SetErrorMessage("GLCtrl::GLPane : Impossible to find a suitable visual.");
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}
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return visualInfo;
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} // END GLCtrl::GLPane::CreateVisual()
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/////////////////////////////////////////////////////////////////////////////////////////
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// Overridden method for attribute setting
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void GLCtrl::GLPane::SetAttributes(unsigned long &ValueMask, XSetWindowAttributes &winAttributes)
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{
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ValueMask |=
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CWBorderPixel
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| CWEventMask
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| CWSaveUnder
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;
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winAttributes.border_pixel = 0;
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winAttributes.event_mask = ExposureMask;
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winAttributes.save_under = XFalse;
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} // END GLCtrl::GLPane::SetAttributes()
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/////////////////////////////////////////////////////////////////////////////////////////
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// Activates current OpenGL context
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void GLCtrl::GLPane::ActivateContext()
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{
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if (WindowContext != NULL && glXGetCurrentContext() != WindowContext)
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glXMakeCurrent( (Display*)Xdisplay, GetWindow(), WindowContext );
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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// Overridden method to create OpenGL context
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void GLCtrl::GLPane::AfterInit(bool Error)
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{
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// Gets the activw XVisualInfo
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XVisualInfo visualInfo = GetVisualInfo();
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// Create an OpenGL rendering context
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WindowContext = glXCreateContext
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(
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(Display *)Xdisplay,
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&visualInfo,
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NULL, // No sharing of display lists
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GL_TRUE // Direct rendering if possible
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);
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if( WindowContext == NULL )
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{
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SetErrorMessage("GLCtrl::GLPane : Error creating GLX context.");
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SetError(true);
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}
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// Activate the created glxwindow
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glXMakeCurrent( (Display*)Xdisplay, GetWindow(), WindowContext );
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// Call user init function
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ctrl->GLInit();
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// Calls resize and paint functions
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ctrl->GLResize( GetSize().cx, GetSize().cy );
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ctrl->GLPaint();
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} // END GLCtrl::GLPane::AfterInit()
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/////////////////////////////////////////////////////////////////////////////////////////
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// Overridden method to destroy OpenGL context
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void GLCtrl::GLPane::BeforeTerminate(void)
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{
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// Calls user terminate function
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ctrl->GLDone();
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// Resets context and destroys it
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glXMakeCurrent( (Display*)Xdisplay, None, NULL );
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glXDestroyContext( (Display *)Xdisplay, WindowContext );
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WindowContext = NULL;
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} // END GLCtrl::GLPane::BeforeTerminate()
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/////////////////////////////////////////////////////////////////////////////////////////
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// Overridden method to resize GL windows
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void GLCtrl::GLPane::Layout()
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{
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// Activates the current context
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ActivateContext();
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if (glXGetCurrentContext() == NULL)
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return;
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// Calls user resize hook
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ctrl->GLResize(GetSize().cx, GetSize().cy);
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} // END GLCtrl::GLPane::Resize()
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/////////////////////////////////////////////////////////////////////////////////////////
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// Paint method - with graphic context
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void GLCtrl::GLPane::Paint(Draw &draw)
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{
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// Activates the current context
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ActivateContext();
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// Calls user paint hook
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ctrl->GLPaint();
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// Swap buffers or flush as needed
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if( ctrl->doubleBuffering )
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glXSwapBuffers( (Display*)Xdisplay, GetWindow() ); // Buffer swap does implicit glFlush
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else
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glFlush();
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} // END GLCtrl::GLPane::Paint()
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#endif
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END_UPP_NAMESPACE
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