/// <summary>
/// Convenience function that creates the required objects to initialise the
/// CEGUI system.
///
/// The created Renderer will use the current OpenGL viewport as it's
/// default surface size.
///
/// This will create and initialise the following objects for you:
/// - CEGUI::OpenGLRenderer
/// - CEGUI::DefaultResourceProvider
/// - CEGUI::System
/// </summary>
/// <param name="textureTargetType">
/// Specifies one of the TextureTargetType enumerated values indicating the
/// desired TextureTarget type to be used. Defaults to TTT_AUTO.
/// </param>
/// <param name="abi">This must be set to CEGUI_VERSION_ABI</param>
/// <returns>
/// Reference to the CEGUI::OpenGLRenderer object that was created.
/// </returns>
public static OpenGLRenderer BootstrapSystem(TextureTargetType textureTargetType = TextureTargetType.TTT_AUTO /*, int abi = CEGUI_VERSION_ABI*/)
{
// TODO: System::performVersionTest(CEGUI_VERSION_ABI, abi, CEGUI_FUNCTION_NAME);
if (Base.System.GetSingleton() != null)
{
throw new InvalidRequestException("CEGUI::System object is already initialised.");
}
var renderer = Create(textureTargetType);
Base.System.Create(renderer, new DefaultResourceProvider());
return(renderer);
}
/// <summary>
/// Constructor for OpenGL Renderer objects
/// </summary>
/// <param name="textureTargetType">
/// Specifies one of the TextureTargetType enumerated values indicating the
/// desired TextureTarget type to be used.
/// </param>
private OpenGLRenderer(TextureTargetType textureTargetType)
{
InitialiseRendererIDString();
InitialiseGLExtensions();
InitialiseTextureTargetFactory(textureTargetType);
InitialiseShaderWrappers();
// we _really_ need separate rgb/alpha blend modes, if this support is not
// available, add a note to the renderer ID string so that this fact is
// logged.
if (!GLEW_VERSION_1_4 && !GLEW_EXT_blend_func_separate)
{
d_rendererID += " No glBlendFuncSeparate(EXT) support.";
}
}
//! initialise OGLTextureTargetFactory that will generate TextureTargets
private void InitialiseTextureTargetFactory(TextureTargetType textureTargetType)
{
// prefer FBO
if (((textureTargetType == TextureTargetType.TTT_AUTO) || (textureTargetType == TextureTargetType.TTT_FBO)) && GLEW_EXT_framebuffer_object)
{
d_rendererID += " TextureTarget support enabled via FBO extension.";
_textureTargetFactory = x => new OpenGLFBOTextureTarget((OpenGLRenderer)x);
}
//#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__HAIKU__)
// // on linux (etc), we can try for GLX pbuffer support
// else if (((tt_type == TTT_AUTO) || (tt_type == TTT_PBUFFER)) &&
// GLXEW_VERSION_1_3)
// {
// d_rendererID += " TextureTarget support enabled via GLX pbuffers.";
// d_textureTargetFactory =
// CEGUI_NEW_AO OGLTemplateTargetFactory<OpenGLGLXPBTextureTarget>;
// }
//#elif defined(_WIN32) || defined(__WIN32__)
else if (((textureTargetType == TextureTargetType.TTT_AUTO) || (textureTargetType == TextureTargetType.TTT_PBUFFER)) && WGLEW_ARB_pbuffer)
{
// on Windows, we can try for WGL based pbuffer support
d_rendererID += " TextureTarget support enabled via WGL_ARB_pbuffer.";
_textureTargetFactory = x => new OpenGLWGLPBTextureTarget((OpenGLRenderer)x);
}
//#elif defined(__APPLE__)
// // on Apple Mac, we can try for Apple's pbuffer support
// else if (((tt_type == TTT_AUTO) || (tt_type == TTT_PBUFFER)) &&
// GLEW_APPLE_pixel_buffer)
// {
// d_rendererID += " TextureTarget support enabled via "
// "GL_APPLE_pixel_buffer.";
// d_textureTargetFactory =
// CEGUI_NEW_AO OGLTemplateTargetFactory<OpenGLApplePBTextureTarget>;
// }
//#endif
// Nothing suitable available, try to carry on without TextureTargets
else
{
d_rendererID += " TextureTarget support is not available :(";
_textureTargetFactory = x => null;
}
}
/*!
* \brief
* Create an OpenGLRenderer object.
*
* \param display_size
* Size object describing the initial display resolution.
*
* \param tt_type
* Specifies one of the TextureTargetType enumerated values indicating the
* desired TextureTarget type to be used.
*
* \param abi
* This must be set to CEGUI_VERSION_ABI
*/
public static OpenGLRenderer Create(Sizef displaySize, TextureTargetType textureTargetType = TextureTargetType.TTT_AUTO /*, int abi = CEGUI_VERSION_ABI*/)
{
// TODO: System::performVersionTest(CEGUI_VERSION_ABI, abi, CEGUI_FUNCTION_NAME);
return(new OpenGLRenderer(displaySize, textureTargetType));
}
