#include "extension.h"
#include "gl.h"
+#ifndef GL_VERSION_3_0
+#define GL_NUM_EXTENSIONS 0x821D
+#endif
+
+#ifndef GL_VERSION_3_2
+#define GL_CONTEXT_CORE_PROFILE_BIT 0x00000001
+#define GL_CONTEXT_PROFILE_MASK 0x9126
+#endif
+
using namespace std;
namespace Msp {
bool is_supported(const string &ext)
{
+ if(is_disabled(ext))
+ return false;
+
static set<string> extensions;
static bool init_done = false;
if(!init_done)
{
- if(const char *gl_ext = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)))
+ if(get_gl_api()==OPENGL && get_gl_version()>=Version(3, 0))
+ {
+ typedef GLubyte *(APIENTRY *FPtr_glGetStringi)(GLenum, GLuint);
+ FPtr_glGetStringi glGetStringi = reinterpret_cast<FPtr_glGetStringi>(get_proc_address("glGetStringi"));
+ int n_extensions;
+ glGetIntegerv(GL_NUM_EXTENSIONS, &n_extensions);
+ for(int i=0; i<n_extensions; ++i)
+ extensions.insert(reinterpret_cast<const char *>(glGetStringi(GL_EXTENSIONS, i)));
+ }
+ else
{
- vector<string> exts = split(gl_ext);
- extensions.insert(exts.begin(), exts.end());
+ if(const char *gl_ext = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)))
+ {
+ vector<string> exts = split(gl_ext);
+ extensions.insert(exts.begin(), exts.end());
+ }
+ }
+
+ init_done = true;
+ }
+
+ return extensions.count(ext);
+}
+
+bool is_supported(const Version &core_version, const Version &deprecated_version)
+{
+ const Version &version = get_gl_version();
+ if(deprecated_version && version>=deprecated_version && get_gl_profile()==CORE_PROFILE)
+ return false;
+ return (version>=core_version);
+}
+
+bool is_disabled(const string &ext)
+{
+ static set<string> disabled_exts;
+ static bool init_done = false;
+
+ if(!init_done)
+ {
+ if(const char *disable_ptr = getenv("MSPGL_DISABLE_EXTENSIONS"))
+ {
+ vector<string> disable = split(disable_ptr);
+ disabled_exts.insert(disable.begin(), disable.end());
}
if(const char *renderer_ptr = reinterpret_cast<const char *>(glGetString(GL_RENDERER)))
/* 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");
+ disabled_exts.insert("GL_NV_primitive_restart");
+
+ // The core primitive restart feature does not work either.
+ disabled_exts.insert("GL_MSP_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(get_gl_version()<Version(2, 0))
+ disabled_exts.insert("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);
+ return disabled_exts.count(ext);
}
GLApi get_gl_api()
#endif
}
+inline GLProfile _get_gl_profile()
+{
+ if(get_gl_api()==OPENGL && get_gl_version()>=Version(3, 0))
+ {
+ int mask;
+ glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &mask);
+ if(mask==GL_CONTEXT_CORE_PROFILE_BIT)
+ return CORE_PROFILE;
+ }
+
+ return COMPATIBILITY_PROFILE;
+}
+
+GLProfile get_gl_profile()
+{
+ static GLProfile profile = _get_gl_profile();
+ return profile;
+}
+
inline Version _get_gl_version()
{
const char *gl_ver_ptr = reinterpret_cast<const char *>(glGetString(GL_VERSION));
if(const char *force_ver_ptr = getenv("MSPGL_FORCE_VERSION"))
{
Version force_ver(force_ver_ptr);
- if(!(force_ver>=ver))
+ if(force_ver<ver)
ver = force_ver;
}
if(const char *force_ver_ptr = getenv("MSPGL_FORCE_GLSL_VERSION"))
{
Version force_ver(force_ver_ptr);
- if(!(force_ver>=ver))
+ if(force_ver<ver)
ver = force_ver;
}
return version;
}
-bool is_version_at_least(unsigned a, unsigned b)
-{
- return get_gl_version()>=Version(a, b);
-}
-
ExtFunc *get_proc_address(const string &name)
{
-#if defined(WIN32)
+#if defined(_WIN32)
return reinterpret_cast<ExtFunc *>(wglGetProcAddress(name.c_str()));
#elif defined(__APPLE__)
(void)name;