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BLEN-356: Automatically configure PXR_MTLX_STDLIB_SEARCH_PATHS #9

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Bogdan Nagirniak merged 4 commits from blen-356-pxr_mtlx_stdlib_search_paths into hydra-render 2023-03-06 17:29:17 +01:00
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1 changed files with 42 additions and 0 deletions
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42
source/blender/render/hydra/python.cc
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@ -13,6 +13,9 @@
#include "glog/logging.h"
#include "BKE_appdir.h"
#include "BLI_string.h"
#include "BLI_fileops.h"
#include "BLI_path_util.h"
#include "finalEngine.h"
#include "viewportEngine.h"
@ -21,12 +24,51 @@ using namespace std;
namespace blender::render::hydra {
void setup_usd_mtlx_environment()
{
/* PXR_MTLX_STDLIB_SEARCH_PATHS - path to the MaterialX standard library
* USD's MaterialX code expects to be set. */
static bool mtlx_env_set = false;
if (mtlx_env_set) {
return;
}
mtlx_env_set = true;
char stdlib_path[FILE_MAX] = "";
size_t stdlib_path_len = BLI_path_join(
stdlib_path, sizeof(stdlib_path), BKE_appdir_program_dir(), "materialx", "libraries");
if (stdlib_path_len == 0 || !BLI_exists(stdlib_path)) {
return;
}
#ifdef _WIN32
# define PATH_SEP ";"
#else
# define PATH_SEP ":"
#endif
const char *env_var_name = "PXR_MTLX_STDLIB_SEARCH_PATHS";
const char *env_var = BLI_getenv(env_var_name);
if (!env_var) {
BLI_setenv(env_var_name, stdlib_path);
}
else {
size_t env_var_len = strlen(env_var);
std::string combined(stdlib_path_len + 1 + env_var_len, '\0');
BLI_snprintf(combined.data(), combined.capacity(), "%s" PATH_SEP "%s", stdlib_path, env_var);
BLI_setenv(env_var_name, combined.c_str());
}
}
static PyObject *init_func(PyObject * /*self*/, PyObject *args)
{
LOG(INFO) << "init_func";
pxr::PlugRegistry::GetInstance().RegisterPlugins(string(BKE_appdir_program_dir()) + "/blender.shared/usd");
setup_usd_mtlx_environment();
Py_RETURN_NONE;
}