Initial commit.

Framework/external/embree/tutorials/pathtracer/pathtracer.cpp

@@ -0,0 +1,69 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#include "../common/tutorial/tutorial.h"
+#include "../common/tutorial/benchmark_render.h"
+
+#if defined(EMBREE_SYCL_TUTORIAL)
+#  define NAME "pathtracer_sycl"
+#  define FEATURES FEATURE_RTCORE | FEATURE_SYCL
+#else
+#  define NAME "pathtracer"
+#  define FEATURES FEATURE_RTCORE
+#endif
+
+namespace embree
+{
+  extern "C" {
+    int g_spp = 1;
+    int g_max_path_length = 8;
+    bool g_accumulate = 1;
+  }
+  
+  struct Tutorial : public SceneLoadingTutorialApplication
+  {
+    Tutorial()
+      : SceneLoadingTutorialApplication(NAME,FEATURES)
+    {
+      registerOption("spp", [] (Ref<ParseStream> cin, const FileName& path) {
+          g_spp = cin->getInt();
+        }, "--spp <int>: sets number of samples per pixel");
+
+      registerOption("max-path-length", [] (Ref<ParseStream> cin, const FileName& path) {
+          g_max_path_length = cin->getInt();
+        }, "--max-path-length <int>: sets maximal path length (1=primary+shadow)");
+
+      registerOption("accumulate", [] (Ref<ParseStream> cin, const FileName& path) {
+          g_accumulate = cin->getInt();
+        }, "--accumulate <bool>: accumulate samples (on by default)");
+    }
+    
+    void postParseCommandLine() override
+    {
+      /* load default scene if none specified */
+      if (scene_empty_post_parse()) {
+        FileName file = FileName::executableFolder() + FileName("models/cornell_box.ecs");
+        parseCommandLine(new ParseStream(new LineCommentFilter(file, "#")), file.path());
+      }
+    }
+
+#if defined(USE_GLFW)
+    void drawGUI() override
+    {
+      ImGui::Checkbox("accumulate",&g_accumulate);
+      ImGui::Text("max path length");
+      ImGui::DragInt("##max_path_length",&g_max_path_length,1.0f,1,16);
+      ImGui::Text("samples per pixel");
+      ImGui::DragInt("##samples per pixel",&g_spp,1.0f,1,16);
+    }
+#endif
+  };
+
+}
+
+int main(int argc, char** argv) {
+  if (embree::TutorialBenchmark::benchmark(argc, argv)) {
+    return embree::TutorialBenchmark(embree::renderBenchFunc<embree::Tutorial>).main(argc, argv);
+  }
+  return embree::Tutorial().main(argc,argv);
+}