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more mesa debugging

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This commit is contained in:
David Rose 2008-02-26 21:36:27 +00:00
parent b70b3d7102
commit 21651167f1
1 changed files with 23 additions and 2 deletions
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25
panda/src/mesadisplay/osMesaGraphicsStateGuardian.cxx
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@ -63,7 +63,7 @@ OSMesaGraphicsStateGuardian::
// not defined.
////////////////////////////////////////////////////////////////////
void *OSMesaGraphicsStateGuardian::
get_extension_func(const char *, const char *name) {
get_extension_func(const char *prefix, const char *name) {
#if (OSMESA_MAJOR_VERSION == 4 && OSMESA_MINOR_VERSION >= 1) || OSMESA_MAJOR_VERSION > 4
// If we've got at least OSMesa version 4.1, then we can use
// OSMesaGetProcAddress.
@ -73,9 +73,30 @@ get_extension_func(const char *, const char *name) {
// Mesa functions to "mgl", they're still stored as "gl" in the
// OSMesaGetProcAddress() lookup table.
string fullname = string("gl") + string(name);
return (void *)OSMesaGetProcAddress(fullname.c_str());
void *ptr = (void *)OSMesaGetProcAddress(fullname.c_str());
if (mesadisplay_cat.is_debug()) {
mesadisplay_cat.debug()
<< "Looking for function " << fullname << ": " << ptr << "\n";
}
if (ptr == (void *)NULL) {
// Well, try for the more accurate name.
fullname = string(prefix) + name;
ptr = (void *)OSMesaGetProcAddress(fullname.c_str());
if (mesadisplay_cat.is_debug()) {
mesadisplay_cat.debug()
<< "Looking for function " << fullname << ": " << ptr << "\n";
}
}
return ptr;
#else
if (mesadisplay_cat.is_debug()) {
mesadisplay_cat.debug()
<< "Couldn't look up extension function: compied with Mesa version "
<< OSMESA_MAJOR_VERSION << "." << OSMESA_MINOR_VERSION << "\n";
}
// Otherwise, too bad. No extension functions for you. We could
// try to write code that would dig around in the system interface
// (using dlopen(), for instance) to find the extension functions,