/* $Id$
This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
+Copyright © 2007, 2009-2010 Mikko Rasa, Mikkosoft Productions
Distributed under the LGPL
*/
#include <set>
-#include <GL/gl.h>
#ifndef WIN32
+#define GLX_GLXEXT_PROTOTYPES
#include <GL/glx.h>
#endif
+#include <msp/strings/formatter.h>
#include <msp/strings/utils.h>
#include "arb_shader_objects.h"
+#include "arb_vertex_buffer_object.h"
+#include "arb_vertex_program.h"
#include "arb_vertex_shader.h"
+#include "ext_framebuffer_object.h"
#include "except.h"
#include "extension.h"
+#include "gl.h"
+#include "version_1_2.h"
+#include "version_1_3.h"
using namespace std;
init_arb_shader_objects();
if(extensions.count("GL_ARB_vertex_shader"))
init_arb_vertex_shader();
+ if(extensions.count("GL_ARB_vertex_program"))
+ init_arb_vertex_program();
+ if(extensions.count("GL_EXT_framebuffer_object"))
+ init_ext_framebuffer_object();
+ if(extensions.count("GL_ARB_vertex_buffer_object"))
+ init_arb_vertex_buffer_object();
init_done=true;
}
return extensions.count(ext);
}
+const Version &get_gl_version()
+{
+ static Version version;
+ static bool init_done=false;
+
+ if(!init_done)
+ {
+ string gl_ver=reinterpret_cast<const char *>(glGetString(GL_VERSION));
+ vector<string> parts=split(gl_ver.substr(0, gl_ver.find(' ')), '.');
+ version.major=lexical_cast<unsigned>(parts[0]);
+ version.minor=lexical_cast<unsigned>(parts[1]);
+
+ unsigned combined=version.major*0x100+version.minor;
+ if(combined>=0x102)
+ init_version_1_2();
+ if(combined>=0x103)
+ init_version_1_3();
+
+ init_done = true;
+ }
+
+ return version;
+}
+
void require_extension(const string &ext)
{
if(!is_supported(ext))
- throw UnsupportedExtension(ext+" is not supported");
+ throw UnsupportedExtension(ext);
+}
+
+void require_version(unsigned a, unsigned b)
+{
+ const Version &ver=get_gl_version();
+ if(ver.major<a || (ver.major==a && ver.minor<b))
+ throw UnsupportedExtension(format("OpenGL %d.%d", a, b));
}
ExtFunc *get_proc_address(const string &name)
{
#ifndef WIN32
- return glXGetProcAddressARB(reinterpret_cast<const GLubyte *>(name.c_str()));
+ return glXGetProcAddressARB(reinterpret_cast<const unsigned char *>(name.c_str()));
+#else
+ return reinterpret_cast<ExtFunc *>(wglGetProcAddress(name.c_str()));
#endif
}