//----------------------------------------------------------------------------//
OpenGLWGLPBTextureTarget::OpenGLWGLPBTextureTarget(OpenGLRendererBase& owner) :
OpenGLTextureTarget(owner),
d_pixfmt(0),
d_pbuffer(0),
d_context(0),
d_hdc(0),
d_prevContext(0),
d_prevDC(0)
{
if (!WGLEW_ARB_pbuffer)
CEGUI_THROW(RendererException("WGL_ARB_pbuffer extension is needed to "
"use OpenGLWGLPBTextureTarget!"));
HDC hdc = wglGetCurrentDC();
uint fmtcnt;
wglChoosePixelFormatARB(hdc, pbAttrs, 0, 1, &d_pixfmt, &fmtcnt);
if (!fmtcnt)
CEGUI_THROW(RendererException(
"pbuff creation failure, no suitable pixel formats."));
initialiseTexture();
// set default size (and cause initialisation of the pbuffer)
declareRenderSize(Sizef(DEFAULT_SIZE, DEFAULT_SIZE));
}
//----------------------------------------------------------------------------//
void OpenGLApplePBTextureTarget::restoreTexture()
{
const Size sz(d_area.getSize());
d_area.setSize(Size(0.0f, 0.0f));
OpenGLTextureTarget::restoreTexture();
initialiseTexture();
declareRenderSize(sz);
}
//----------------------------------------------------------------------------//
OpenGLGLXPBTextureTarget::OpenGLGLXPBTextureTarget(OpenGLRenderer& owner) :
OpenGLTextureTarget(owner),
d_pbuffer(0)
{
if (!GLXEW_VERSION_1_3)
throw InvalidRequestException("System does not support GLX >= 1.3 "
"required by CEGUI pbuffer usage under GLX");
d_dpy = glXGetCurrentDisplay();
selectFBConfig();
createContext();
initialiseTexture();
// set default size (and cause initialisation of the pbuffer)
declareRenderSize(Size(DEFAULT_SIZE, DEFAULT_SIZE));
// set some states as a one-time thing (because we use a separate context)
enablePBuffer();
glEnable(GL_SCISSOR_TEST);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_SECONDARY_COLOR_ARRAY);
glDisableClientState(GL_INDEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_FOG_COORDINATE_ARRAY);
glDisableClientState(GL_EDGE_FLAG_ARRAY);
glClearColor(0,0,0,0);
disablePBuffer();
}
//----------------------------------------------------------------------------//
void OpenGLGLXPBTextureTarget::restoreTexture()
{
OpenGLTextureTarget::restoreTexture();
initialiseTexture();
initialisePBuffer();
}
