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#include <iostream>
#include <map>
#include <array>
#include <set>
#include <cstring>
#include <GLFW/glfw3.h>
#include <glbinding-aux/Meta.h>
#include <glbinding/AbstractFunction.h>
#include <glbinding-aux/ContextInfo.h>
#include <glbinding/Version.h>
#include <glbinding/glbinding.h>
#include <glbinding/gl/gl.h>
#include <glbinding-aux/ValidVersions.h>
#include <glbinding-aux/types_to_string.h>
using namespace gl;
using namespace glbinding;
void error(int errnum, const char * errmsg)
{
std::cerr << errnum << ": " << errmsg << std::endl;
}
void print(
const Version & version
, const bool forward
, const bool core
, const Version & result
, const bool isForward
, const bool isCore)
{
std::cout << " "
<< version << " " << (forward ? "f" : "-") << " " << (core ? "c" : "-") << " " << result << (isForward ? "f" : "") << (isCore ? "c" : "") << std::endl;
}
bool isCore(const Version & version)
{
if (version<glbinding::Version(3,2))
{
return false;
}
GLint value = 0;
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &value);
return (value & static_cast<unsigned int>(GL_CONTEXT_CORE_PROFILE_BIT)) > 0;
}
Version printVersionOfContextRequest(
const Version & version
, const bool forward
, const bool core)
{
if (version < Version(3, 2) && (forward || core))
{
print(version, forward, core, Version(), false, false);
return Version();
}
glfwDefaultWindowHints();
glfwWindowHint(GLFW_VISIBLE, false);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, version.majorVersion());
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, version.minorVersion());
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, forward);
if (core)
{
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
}
GLFWwindow * window = glfwCreateWindow(320, 240, "", nullptr, nullptr);
if (!window)
{
print(version, forward, core, Version(), false, false);
return Version();
}
glfwMakeContextCurrent(window);
glbinding::initialize(glfwGetProcAddress, true);
auto result = aux::ContextInfo::version();
glfwMakeContextCurrent(window);
print(version, forward, core, result, forward, isCore(result));
glfwMakeContextCurrent(nullptr);
glfwDestroyWindow(window);
return result;
}
int main(int argc, char * argv[])
{
glfwSetErrorCallback(error);
if (!glfwInit())
return 1;
std::cout << std::endl << "test: requesting all context configurations ..." << std::endl
<< std::endl << " scheme: <requested_version> <forward> <core> <created_version>" << std::endl << std::endl;
std::map<Version, std::array<Version, 4>> markdown;
for (const auto & version : aux::ValidVersions::versions())
{
markdown[version][0] = printVersionOfContextRequest(version, false, false);
markdown[version][1] = printVersionOfContextRequest(version, false, true);
markdown[version][2] = printVersionOfContextRequest(version, true, false);
markdown[version][3] = printVersionOfContextRequest(version, true, true);
std::cout << std::endl;
}
auto printMarkdown = false;
for (int i = 0; i < argc; ++i)
printMarkdown |= (strcmp(argv[i], "--markdown") == 0);
if (printMarkdown)
{
std::cout << "printing markdown formatted results ..." << std::endl;
std::cout << std::endl << "|";
for (const auto & version : aux::ValidVersions::versions())
std::cout << version << (version != aux::ValidVersions::latest() ? "<br>" : "");
for (int i = 0; i < 4; ++i)
{
std::cout << "|";
for (const auto & version : aux::ValidVersions::versions())
std::cout << markdown[version][i] << (version != aux::ValidVersions::latest() ? "<br>" : "");
}
std::cout << "|" << std::endl << std::endl;
}
glfwDefaultWindowHints();
glfwWindowHint(GLFW_VISIBLE, false);
#ifdef SYSTEM_DARWIN
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, true);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#endif
GLFWwindow * window = glfwCreateWindow(320, 240, "", nullptr, nullptr);
if (!window)
{
glfwTerminate();
return -1;
}
glfwHideWindow(window);
glfwMakeContextCurrent(window);
glbinding::initialize(glfwGetProcAddress, false); // only resolve functions that are actually used (lazy)
// print some gl infos (query)
std::cout
<< "OpenGL Version: " << aux::ContextInfo::version() << std::endl
<< "OpenGL Vendor: " << aux::ContextInfo::vendor() << std::endl
<< "OpenGL Renderer: " << aux::ContextInfo::renderer() << std::endl
<< "OpenGL Revision: " << aux::Meta::glRevision() << " (gl.xml)" << std::endl << std::endl;
glfwTerminate();
return 0;
}
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