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more stderr messages when gl3w fails to load

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This commit is contained in:
Josh Holtrop 2017-01-20 15:07:04 -05:00
parent b734249df2
commit 5eb5039d38
1 changed files with 10 additions and 0 deletions
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10
src/gui/Window.cc
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@ -53,12 +53,22 @@ static bool Initialize_OpenGL()
{ {
if (gl3wInit() != 0) if (gl3wInit() != 0)
{ {
std::cerr << "Failed to initialize gl3w." << std::endl;
/* Failed to gl3wInit() */ /* Failed to gl3wInit() */
return false; return false;
} }
if (!gl3wIsSupported(3, 0)) if (!gl3wIsSupported(3, 0))
{ {
std::cerr << "Error: OpenGL 3.0 is required." << std::endl;
std::cerr << "OpenGL version: "
<< glGetString(GL_VERSION)
<< ", GLSL: "
<< glGetString(GL_SHADING_LANGUAGE_VERSION)
<< std::endl;
/* OpenGL 3.0 is not supported */ /* OpenGL 3.0 is not supported */
return false; return false;
} }