Context Infos

In .h file:

#include <GL/glew.h>

struct CGLContextInfo

{

struct {

GLint Major, Minor;

std::string Driver;

std::string ShadingLanguage;

} Version;

std::string Vendor;

std::string Renderer;

std::list<std::string> SupportedExtensions;

std::list<std::string> SupportedGLSLVersions;

struct {

bool IsDebugContext;

bool IsForwardCompatibleContext;

bool IsRobustAccessContext;

} Flags;

struct {

bool IsCore;

bool IsCompatiblity;

} Profile;

};

GLContextInfo GetContextInfos();

In .cpp file:

GLContextInfo GetContextInfos()

{

CGLContextInfo infos;

glGetIntegerv(GL_MAJOR_VERSION, &infos.Version.Major);

glGetIntegerv(GL_MINOR_VERSION, &infos.Version.Minor);

infos.Version.Driver = (const char*)glGetString(GL_VERSION);

infos.Vendor = (const char*)glGetString(GL_VENDOR);

infos.Renderer = (const char*)glGetString(GL_RENDERER);

infos.Version.ShadingLanguage = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);

GLint numberofextensions = 0;

glGetIntegerv(GL_NUM_EXTENSIONS, &numberofextensions);

for (int i = 0; i < numberofextensions; i++)

infos.SupportedExtensions.push_back((const char*)glGetStringi(GL_EXTENSIONS, i));

GLint numberofsupportedglslversions = 0;

glGetIntegerv(GL_NUM_SHADING_LANGUAGE_VERSIONS, &numberofsupportedglslversions);

for (int i = 0; i < numberofsupportedglslversions; i++)

infos.SupportedGLSLVersions.push_back((const char*)glGetStringi(GL_SHADING_LANGUAGE_VERSION, i));

GLint contextflags = 0;

glGetIntegerv(GL_CONTEXT_FLAGS, &contextflags);

infos.Flags.IsDebugContext = contextflags & GL_CONTEXT_FLAG_DEBUG_BIT;

infos.Flags.IsForwardCompatibleContext = contextflags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;

infos.Flags.IsRobustAccessContext = contextflags & GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT;

GLint contextprofilemask = 0;

glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &contextprofilemask);

infos.Profile.IsCore = contextprofilemask & GL_CONTEXT_CORE_PROFILE_BIT;

infos.Profile.IsCompatiblity = contextprofilemask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT;

return infos;

}