-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 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/format.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 "except.h"
+#include "error.h"
+#include "ext_framebuffer_blit.h"
+#include "ext_framebuffer_multisample.h"
+#include "ext_framebuffer_object.h"
#include "extension.h"
+#include "gl.h"
+#include "nv_primitive_restart.h"
+#include "version_1_2.h"
+#include "version_1_3.h"
using namespace std;
bool is_supported(const string &ext)
{
static set<string> extensions;
- static bool init_done=false;
+ static bool init_done = false;
if(!init_done)
{
- if(const char *gl_ext=reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)))
+ if(const char *gl_ext = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)))
{
- vector<string> exts=split(gl_ext);
+ vector<string> exts = split(gl_ext);
extensions.insert(exts.begin(), exts.end());
}
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_EXT_framebuffer_blit"))
+ init_ext_framebuffer_blit();
+ if(extensions.count("GL_EXT_framebuffer_multisample"))
+ init_ext_framebuffer_multisample();
+ if(extensions.count("GL_ARB_vertex_buffer_object"))
+ init_arb_vertex_buffer_object();
+ if(extensions.count("GL_NV_primitive_restart"))
+ init_nv_primitive_restart();
- init_done=true;
+ init_done = true;
}
return extensions.count(ext);
void require_extension(const string &ext)
{
if(!is_supported(ext))
- throw UnsupportedExtension(ext+" is not supported");
+ throw unsupported_extension(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;
+}
+
+bool is_version_at_least(unsigned a, unsigned b)
+{
+ const Version &ver = get_gl_version();
+ return (ver.major>a || (ver.major==a && ver.minor>=b));
+}
+
+void require_version(unsigned a, unsigned b)
+{
+ if(!is_version_at_least(a, b))
+ throw unsupported_extension(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
}