X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fextension.cpp;h=bceab7ad964e1e3e68fe44bb174b76d8b992fd5b;hb=a480d4cc323db7cc77388f5af0094dd593dc66e9;hp=56f96d4ecee2136dcde2d42f5fbdfa7bbf8b421b;hpb=710418caebcbcb9ed22bb828cb1dcd88d6b99aa1;p=libs%2Fgl.git

diff --git a/source/extension.cpp b/source/extension.cpp
index 56f96d4e..bceab7ad 100644
--- a/source/extension.cpp
+++ b/source/extension.cpp
@@ -1,5 +1,8 @@
 #include <set>
-#if !defined(WIN32) && !defined(__APPLE__)
+#include <cstdlib>
+#if defined(__ANDROID__)
+#include <EGL/egl.h>
+#elif !defined(WIN32) && !defined(__APPLE__)
 #define GLX_GLXEXT_PROTOTYPES
 #include <GL/glx.h>
 #endif
@@ -14,6 +17,31 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
+Version::Version()
+{
+	major = 0;
+	minor = 0;
+}
+
+Version::Version(unsigned short a, unsigned short i)
+{
+	major = a;
+	minor = i;
+}
+
+Version::Version(const string &s)
+{
+	vector<string> parts = split(s, '.');
+	major = lexical_cast<unsigned>(parts[0]);
+	minor = lexical_cast<unsigned>(parts[1]);
+}
+
+bool Version::operator>=(const Version &other) const
+{
+	return major>other.major || (major==other.major && minor>=other.minor);
+}
+
+
 Extension::Extension(const char *n, InitFunc f):
 	name(n),
 	init_func(f),
@@ -54,40 +82,92 @@ bool is_supported(const string &ext)
 		}
 
 		string renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER));
-		if(renderer.find("Radeon")!=string::npos)
+		if(renderer.find("Radeon")!=string::npos || renderer.find("AMD")!=string::npos)
+		{
 			/* Radeon doesn't process NV_primitive_restart correctly and treats
 			the restart index as a normal element if the indices are stored in a
 			buffer. */
 			extensions.erase("GL_NV_primitive_restart");
 
+			/* AMD's uniform buffer objects only work with the core version of
+			shaders. */
+			if(!(get_gl_version()>=Version(2, 0)))
+				extensions.erase("GL_ARB_uniform_buffer_object");
+		}
+
+		if(const char *disable_ptr = getenv("MSPGL_DISABLE_EXTENSIONS"))
+		{
+			vector<string> disable = split(disable_ptr);
+			for(vector<string>::const_iterator i=disable.begin(); i!=disable.end(); ++i)
+				extensions.erase(*i);
+		}
+
 		init_done = true;
 	}
 
 	return extensions.count(ext);
 }
 
-const Version &get_gl_version()
+GLApi get_gl_api()
 {
-	static Version version;
-	static bool init_done = false;
+#ifdef GL_ES_VERSION_2_0
+	return OPENGL_ES2;
+#else
+	return OPENGL;
+#endif
+}
 
-	if(!init_done)
+inline Version _get_gl_version()
+{
+	string gl_ver = reinterpret_cast<const char *>(glGetString(GL_VERSION));
+	if(!gl_ver.compare(0, 10, "OpenGL ES "))
+		gl_ver.erase(0, 10);
+
+	Version ver(gl_ver.substr(0, gl_ver.find(' ')));
+
+	if(const char *force_ver_ptr = getenv("MSPGL_FORCE_VERSION"))
 	{
-		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]);
+		Version force_ver(force_ver_ptr);
+		if(!(force_ver>=ver))
+			ver = force_ver;
+	}
 
-		init_done = true;
+	return ver;
+}
+
+const Version &get_gl_version()
+{
+	static Version version = _get_gl_version();
+	return version;
+}
+
+inline Version _get_glsl_version()
+{
+	string glsl_ver = reinterpret_cast<const char *>(glGetString(GL_SHADING_LANGUAGE_VERSION));
+	if(!glsl_ver.compare(0, 18, "OpenGL ES GLSL ES "))
+		glsl_ver.erase(0, 18);
+
+	Version ver(glsl_ver.substr(0, glsl_ver.find(' ')));
+
+	if(const char *force_ver_ptr = getenv("MSPGL_FORCE_GLSL_VERSION"))
+	{
+		Version force_ver(force_ver_ptr);
+		if(!(force_ver>=ver))
+			ver = force_ver;
 	}
 
+	return ver;
+}
+
+const Version &get_glsl_version()
+{
+	static Version version = _get_glsl_version();
 	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));
+	return get_gl_version()>=Version(a, b);
 }
 
 ExtFunc *get_proc_address(const string &name)
@@ -97,6 +177,8 @@ ExtFunc *get_proc_address(const string &name)
 #elif defined(__APPLE__)
 	(void)name;
 	return 0;  // Not supported
+#elif defined(__ANDROID__)
+	return eglGetProcAddress(name.c_str());
 #else
 	return glXGetProcAddressARB(reinterpret_cast<const unsigned char *>(name.c_str()));
 #endif