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),
if(!init_done)
{
- if(get_gl_api()==OPENGL && get_gl_version()>=Version(3, 0))
+ if(get_backend_api()==OPENGL && get_backend_version()>=Version(3, 0))
{
typedef GLubyte *(APIENTRY *FPtr_glGetStringi)(GLenum, GLuint);
FPtr_glGetStringi glGetStringi = reinterpret_cast<FPtr_glGetStringi>(get_proc_address("glGetStringi"));
bool is_supported(const Version &core_version, const Version &deprecated_version)
{
- const Version &version = get_gl_version();
+ const Version &version = get_backend_version();
if(deprecated_version && version>=deprecated_version && get_gl_profile()==CORE_PROFILE)
return false;
return (version>=core_version);
/* AMD's uniform buffer objects only work with the core version of
shaders. */
- if(get_gl_version()<Version(2, 0))
+ if(get_backend_version()<Version(2, 0))
disabled_exts.insert("GL_ARB_uniform_buffer_object");
}
}
return disabled_exts.count(ext);
}
-GLApi get_gl_api()
-{
-#ifdef GL_ES_VERSION_2_0
- return OPENGL_ES2;
-#else
- return OPENGL;
-#endif
-}
-
inline GLProfile _get_gl_profile()
{
- if(get_gl_api()==OPENGL && get_gl_version()>=Version(3, 0))
+ if(get_backend_api()==OPENGL && get_backend_version()>=Version(3, 0))
{
int mask;
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &mask);
return profile;
}
-inline Version _get_gl_version()
-{
- const char *gl_ver_ptr = reinterpret_cast<const char *>(glGetString(GL_VERSION));
- if(!gl_ver_ptr)
- throw runtime_error("OpenGL version not available");
-
- string gl_ver = gl_ver_ptr;
- 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"))
- {
- Version force_ver(force_ver_ptr);
- if(force_ver<ver)
- ver = force_ver;
- }
-
- return ver;
-}
-
-const Version &get_gl_version()
-{
- static Version version = _get_gl_version();
- return version;
-}
-
inline Version _get_glsl_version()
{
const char *glsl_ver_ptr = reinterpret_cast<const char *>(glGetString(GL_SHADING_LANGUAGE_VERSION));