Add Chromium-only Blender WebEngine parity work

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

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+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#pragma once
+
+#ifdef WITH_OSL
+
+#  include <OSL/oslexec.h>
+
+#  include "util/map.h"
+#  include "util/param.h"
+#  include "util/vector.h"
+
+#  include "kernel/types.h"
+
+#  include "kernel/osl/compat.h"
+#  include "kernel/osl/types.h"
+
+#  ifndef WIN32
+using std::isfinite;
+#  endif
+
+CCL_NAMESPACE_BEGIN
+
+class OSLRenderServices;
+class ColorSpaceProcessor;
+struct ThreadKernelGlobalsCPU;
+
+/* OSL Globals
+ *
+ * Data needed by OSL render services, that is global to a rendering session.
+ * This includes all OSL shaders, name to attribute mapping and texture handles.
+ */
+
+struct OSLGlobals {
+  OSLGlobals()
+  {
+    ss = nullptr;
+    services = nullptr;
+    use_shading = false;
+    use_camera = false;
+  }
+
+  bool use_shading;
+  bool use_camera;
+
+  /* shading system */
+  OSL::ShadingSystem *ss;
+  OSLRenderServices *services;
+
+  /* shader states */
+  vector<OSL::ShaderGroupRef> surface_state;
+  vector<OSL::ShaderGroupRef> volume_state;
+  vector<OSL::ShaderGroupRef> displacement_state;
+  vector<OSL::ShaderGroupRef> bump_state;
+  OSL::ShaderGroupRef background_state;
+  OSL::ShaderGroupRef camera_state;
+
+  /* attributes */
+  using ObjectNameMap = unordered_map<OSLUStringHash, int>;
+
+  ObjectNameMap object_name_map;
+  vector<ustring> object_names;
+};
+
+/* trace() call result */
+struct OSLTraceData {
+  Ray ray;
+  Intersection isect;
+  ShaderData sd;
+  bool setup;
+  bool init;
+  bool hit;
+  bool self_hit;
+};
+
+/* thread key for thread specific data lookup */
+struct OSLThreadData {
+  /* Global Data */
+  OSLGlobals *globals = nullptr;
+  OSL::ShadingSystem *ss = nullptr;
+
+  /* Per-thread data. */
+  int thread_index = -1;
+
+  mutable ShaderGlobals shader_globals;
+  mutable OSLTraceData tracedata;
+
+  OSL::PerThreadInfo *osl_thread_info = nullptr;
+  OSL::ShadingContext *context = nullptr;
+
+  OSLThreadData(OSLGlobals *globals, const int thread_index);
+  ~OSLThreadData();
+
+  OSLThreadData(OSLThreadData &other) = delete;
+  OSLThreadData(OSLThreadData &&other) noexcept;
+  OSLThreadData &operator=(const OSLThreadData &other) = delete;
+  OSLThreadData &operator=(OSLThreadData &&other) = delete;
+};
+
+CCL_NAMESPACE_END
+
+#endif