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Fix OpenGL extensions not loading

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hobby8 2018-10-06 22:49:48 +03:00 committed by Lukas Dürrenberger
parent 53d8f66d43
commit 7e40f80f52
1 changed files with 9 additions and 13 deletions
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22
src/SFML/Window/GlContext.cpp
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@ -218,10 +218,12 @@ namespace
extensions.clear(); extensions.clear();
// Check whether a >= 3.0 context is available // Check whether a >= 3.0 context is available
glGetStringiFuncType glGetStringiFunc = NULL;
glGetStringiFunc = reinterpret_cast<glGetStringiFuncType>(sf::priv::GlContext::getFunction("glGetStringi"));
int majorVersion = 0; int majorVersion = 0;
glGetIntegerv(GL_MAJOR_VERSION, &majorVersion); glGetIntegerv(GL_MAJOR_VERSION, &majorVersion);
if (glGetError() == GL_INVALID_ENUM) if (glGetError() == GL_INVALID_ENUM || !glGetStringiFunc)
{ {
// Try to load the < 3.0 way // Try to load the < 3.0 way
const char* extensionString = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS)); const char* extensionString = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
@ -240,22 +242,16 @@ namespace
else else
{ {
// Try to load the >= 3.0 way // Try to load the >= 3.0 way
glGetStringiFuncType glGetStringiFunc = NULL; int numExtensions = 0;
glGetStringiFunc = reinterpret_cast<glGetStringiFuncType>(sf::priv::GlContext::getFunction("glGetStringi")); glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
if (glGetStringiFunc) if (numExtensions)
{ {
int numExtensions = 0; for (unsigned int i = 0; i < static_cast<unsigned int>(numExtensions); ++i)
glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
if (numExtensions)
{ {
for (unsigned int i = 0; i < static_cast<unsigned int>(numExtensions); ++i) const char* extensionString = reinterpret_cast<const char*>(glGetStringiFunc(GL_EXTENSIONS, i));
{
const char* extensionString = reinterpret_cast<const char*>(glGetStringiFunc(GL_EXTENSIONS, i));
extensions.push_back(extensionString); extensions.push_back(extensionString);
}
} }
} }
} }