X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fextension.cpp;h=fbed6e2648c610595ee03451429d19c681416c92;hb=5172d32d67595ea0b70184fadcfcb8e023cccbc8;hp=2d57d1d12224155e8b9ade1f3e488c2d35c8e7c7;hpb=cea3c333797cadd9629aefaa5b82243173a02d16;p=libs%2Fgl.git

diff --git a/source/extension.cpp b/source/extension.cpp
index 2d57d1d1..fbed6e26 100644
--- a/source/extension.cpp
+++ b/source/extension.cpp
@@ -1,20 +1,30 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007, 2009-2011  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_blit.h"
+#include "ext_framebuffer_multisample.h"
+#include "ext_framebuffer_object.h"
 #include "except.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;
 
@@ -24,13 +34,13 @@ namespace GL {
 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());
 		}
 
@@ -40,8 +50,20 @@ bool is_supported(const string &ext)
 			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);
@@ -50,13 +72,51 @@ bool is_supported(const string &ext)
 void require_extension(const string &ext)
 {
 	if(!is_supported(ext))
-		throw UnsupportedExtension(ext+" is not supported");
+		throw UnsupportedExtension(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 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
 }