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/************************************************************************************
AstroMenace (Hardcore 3D space shooter with spaceship upgrade possibilities)
Copyright © 2006-2013 Michael Kurinnoy, Viewizard
AstroMenace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
AstroMenace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AstroMenace. If not, see <http://www.gnu.org/licenses/>.
Web Site: http://www.viewizard.com/
Project: http://sourceforge.net/projects/openastromenace/
E-mail: viewizard@viewizard.com
*************************************************************************************/
#include "RendererInterface.h"
// функции для использования Occlusion Queries
PFNGLGENQUERIESARBPROC glGenQueriesARB = NULL;
PFNGLDELETEQUERIESARBPROC glDeleteQueriesARB = NULL;
PFNGLISQUERYARBPROC glIsQueryARB = NULL;
PFNGLBEGINQUERYARBPROC glBeginQueryARB = NULL;
PFNGLENDQUERYARBPROC glEndQueryARB = NULL;
PFNGLGETQUERYIVARBPROC glGetQueryivARB = NULL;
PFNGLGETQUERYOBJECTIVARBPROC glGetQueryObjectivARB = NULL;
PFNGLGETQUERYOBJECTUIVARBPROC glGetQueryObjectuivARB = NULL;
//------------------------------------------------------------------------------------
// Инициализации работы с Occlusion Queries
//------------------------------------------------------------------------------------
bool vw_Internal_InitializationOcclusionQueries()
{
// Get Pointers To The GL Functions
glGenQueriesARB = (PFNGLGENQUERIESARBPROC) SDL_GL_GetProcAddress("glGenQueriesARB");
glDeleteQueriesARB = (PFNGLDELETEQUERIESARBPROC) SDL_GL_GetProcAddress("glDeleteQueriesARB");
glIsQueryARB = (PFNGLISQUERYARBPROC) SDL_GL_GetProcAddress("glIsQueryARB");
glBeginQueryARB = (PFNGLBEGINQUERYARBPROC) SDL_GL_GetProcAddress("glBeginQueryARB");
glEndQueryARB = (PFNGLENDQUERYARBPROC) SDL_GL_GetProcAddress("glEndQueryARB");
glGetQueryivARB = (PFNGLGETQUERYIVARBPROC) SDL_GL_GetProcAddress("glGetQueryivARB");
glGetQueryObjectivARB = (PFNGLGETQUERYOBJECTIVARBPROC) SDL_GL_GetProcAddress("glGetQueryObjectivARB");
glGetQueryObjectuivARB = (PFNGLGETQUERYOBJECTUIVARBPROC) SDL_GL_GetProcAddress("glGetQueryObjectuivARB");
// если хоть с одной функцией проблемы - не работаем вообще
if (glGenQueriesARB == NULL || glDeleteQueriesARB == NULL || glIsQueryARB == NULL ||
glBeginQueryARB == NULL || glEndQueryARB == NULL || glGetQueryivARB == NULL ||
glGetQueryObjectivARB == NULL || glGetQueryObjectuivARB)
{
glGenQueriesARB = NULL;
glDeleteQueriesARB = NULL;
glIsQueryARB = NULL;
glBeginQueryARB = NULL;
glEndQueryARB = NULL;
glGetQueryivARB = NULL;
glGetQueryObjectivARB = NULL;
glGetQueryObjectuivARB = NULL;
return false;
}
return true;
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_GenQueries(int n, unsigned int *ids)
{
if (glGenQueriesARB == NULL) return;
glGenQueriesARB(n, ids);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_DeleteQueries(int n, const unsigned int *ids)
{
if (glDeleteQueriesARB == NULL) return;
glDeleteQueriesARB(n, ids);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
bool vw_IsQuery(unsigned int id)
{
if (glIsQueryARB == NULL) return false;
return glIsQueryARB(id);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_BeginQuery(unsigned int id)
{
if (glBeginQueryARB == NULL) return;
glBeginQueryARB(GL_SAMPLES_PASSED_ARB, id);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_EndQuery()
{
if (glEndQueryARB == NULL) return;
glEndQueryARB(GL_SAMPLES_PASSED_ARB);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_GetQueryiv(unsigned int target, unsigned int pname, int *params)
{
if (glGetQueryivARB == NULL) return;
glGetQueryivARB(target, pname, params);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_GetQueryObjectiv(unsigned int id, unsigned int pname, int *params)
{
if (glGetQueryObjectivARB == NULL) return;
glGetQueryObjectivARB(id, pname, params);
}
//------------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------------
void vw_GetQueryObjectuiv(unsigned int id, unsigned int pname, unsigned int *params)
{
if (glGetQueryObjectuivARB == NULL) return;
glGetQueryObjectuivARB(id, pname, params);
}
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