Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/kernel/osl/globals.cpp

@@ -0,0 +1,62 @@
+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#include <cstdint> /* Needed before `sdlexec.h` for `int32_t` with GCC 15.1. */
+
+#include <OSL/oslexec.h>
+
+#include "kernel/osl/globals.h"
+
+CCL_NAMESPACE_BEGIN
+
+OSLThreadData::OSLThreadData(OSLGlobals *osl_globals, const int thread_index)
+    : globals(osl_globals), thread_index(thread_index)
+{
+  /* If OSL is not used, we don't need this. */
+  if (globals == nullptr || !(globals->use_shading || globals->use_camera)) {
+    return;
+  }
+
+  ss = globals->ss;
+
+  memset((void *)&shader_globals, 0, sizeof(shader_globals));
+  shader_globals.tracedata = &tracedata;
+
+  if (ss) {
+    osl_thread_info = ss->create_thread_info();
+    /* Dummy texture thread info, we don't need it. */
+    context = ss->get_context(osl_thread_info,
+                              reinterpret_cast<OSL::TextureSystem::Perthread *>(1));
+  }
+}
+
+OSLThreadData::~OSLThreadData()
+{
+  if (context) {
+    ss->release_context(context);
+  }
+  if (osl_thread_info) {
+    ss->destroy_thread_info(osl_thread_info);
+  }
+}
+
+OSLThreadData::OSLThreadData(OSLThreadData &&other) noexcept
+    : globals(other.globals),
+      ss(other.ss),
+      thread_index(other.thread_index),
+      shader_globals(other.shader_globals),
+      tracedata(other.tracedata),
+      osl_thread_info(other.osl_thread_info),
+      context(other.context)
+{
+  shader_globals.tracedata = &tracedata;
+
+  memset((void *)&other.shader_globals, 0, sizeof(other.shader_globals));
+  memset((void *)&other.tracedata, 0, sizeof(other.tracedata));
+  other.thread_index = -1;
+  other.context = nullptr;
+  other.osl_thread_info = nullptr;
+}
+
+CCL_NAMESPACE_END