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/******************************************************************************
* $id: mapoglcontext.h 7725 2011-04-09 15:56:58Z toby $
*
* Project: MapServer
* Purpose: Various template processing functions.
* Author: Steve Lime and the MapServer team.
*
******************************************************************************
* Copyright (c) 1996-2008 Regents of the University of Minnesota.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef MAPOGLCONTEXT_H_
#define MAPOGLCONTEXT_H_
#ifdef USE_OGL
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <windows.h>
#include<GL/gl.h>
#include<GL/glu.h>
#include "opengl/glext.h"
#include "opengl/wglext.h"
typedef HDC OGL_WINDOW;
typedef HGLRC OGL_CONTEXT;
typedef HGLRC OGL_PBUFFER;
#define CALLBACK __stdcall
#else
#include<GL/gl.h>
#include<GL/glx.h>
#include<GL/glu.h>
typedef Display* OGL_WINDOW;
typedef GLXContext OGL_CONTEXT;
typedef GLXPbuffer OGL_PBUFFER;
#define CALLBACK
#endif
class OglRenderer;
class OglContext
{
private:
static OglContext* current;
static bool initWindow();
static bool initSharingContext();
static ms_uint32 getTextureSize(GLuint dimension, ms_uint32 value);
static GLuint NextPowerOf2(GLuint in);
#if defined(_WIN32) && !defined(__CYGWIN__)
static HDC window;
static HGLRC sharingContext;
HDC hPBufferDC;
HGLRC hPBufferRC;
#else
static Display* window;
static GLXContext sharingContext;
static GLXFBConfig* configs;
GLXPbuffer pbuffer;
#endif
public:
static ms_uint32 MAX_MULTISAMPLE_SAMPLES;
static ms_uint32 MAX_ANISOTROPY;
static ms_uint32 MAX_TEXTURE_SIZE;
static ms_uint32 MIN_TEXTURE_SIZE;
OglContext(ms_uint32 width, ms_uint32 height);
~OglContext();
int getHeight() const {
return height;
}
int getWidth() const {
return width;
}
bool isValid() const {
return valid;
}
bool makeCurrent();
void bindPBufferToTexture();
private:
bool createPBuffer(ms_uint32 width, ms_uint32 height);
ms_uint32 width;
ms_uint32 height;
bool valid;
int windowPixelFormat;
#if defined(_WIN32) && !defined(__CYGWIN__)
static PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;
static PFNWGLCREATEPBUFFERARBPROC wglCreatePbufferARB;
static PFNWGLGETPBUFFERDCARBPROC wglGetPbufferDCARB;
static PFNWGLRELEASEPBUFFERDCARBPROC wglReleasePbufferDCARB;
static PFNWGLMAKECONTEXTCURRENTARBPROC wglMakeContextCurrentARB;
#endif
};
#endif /* USE_OGL */
#endif /* MAPOGLCONTEXT_H_ */
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