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- fixed: If we want to support pre-GL3 hardware, we may not require the presence of glGetStringi.

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This commit is contained in:
Christoph Oelckers 2016-04-30 16:23:32 +02:00
parent 2b710ec73d
commit 50ab301bd8
1 changed files with 28 additions and 3 deletions
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31
src/gl/system/gl_interface.cpp
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@ -66,10 +66,35 @@ static void CollectExtensions()
int max = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &max);
for(int i = 0; i < max; i++)
if (0 == max)
{
extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
m_Extensions.Push(FString(extension));
// Try old method to collect extensions
const char *supported = (char *)glGetString(GL_EXTENSIONS);
if (nullptr != supported)
{
char *extensions = new char[strlen(supported) + 1];
strcpy(extensions, supported);
char *extension = strtok(extensions, " ");
while (extension)
{
m_Extensions.Push(FString(extension));
extension = strtok(nullptr, " ");
}
delete [] extensions;
}
}
else
{
// Use modern method to collect extensions
for (int i = 0; i < max; i++)
{
extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
m_Extensions.Push(FString(extension));
}
}
}