Port to Embree 4.x

Author: musicinmybrain

cmake/modules/FindEmbree.cmake

@@ -20,11 +20,11 @@
 #=============================================================================
 
 if (APPLE)
-    set (EMBREE_LIB_NAME libembree3.dylib)
+    set (EMBREE_LIB_NAME libembree4.dylib)
 elseif (UNIX)
-    set (EMBREE_LIB_NAME libembree3.so)
+    set (EMBREE_LIB_NAME libembree4.so)
 elseif (WIN32)
-    set (EMBREE_LIB_NAME embree3.lib)
+    set (EMBREE_LIB_NAME embree4.lib)
 endif()
 
 find_library(EMBREE_LIBRARY
@@ -39,20 +39,20 @@ find_library(EMBREE_LIBRARY
 )
 
 find_path(EMBREE_INCLUDE_DIR
-    embree3/rtcore.h
+    embree4/rtcore.h
 HINTS
     "${EMBREE_LOCATION}/include"
     "$ENV{EMBREE_LOCATION}/include"
 DOC
     "Embree headers path"
 )
 
-if (EMBREE_INCLUDE_DIR AND EXISTS "${EMBREE_INCLUDE_DIR}/embree3/rtcore_version.h" )
-    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree3/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_MAJOR.*$")
+if (EMBREE_INCLUDE_DIR AND EXISTS "${EMBREE_INCLUDE_DIR}/embree4/rtcore_version.h" )
+    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree4/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_MAJOR.*$")
     string(REGEX MATCHALL "[0-9]+" MAJOR ${TMP})
-    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree3/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_MINOR.*$")
+    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree4/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_MINOR.*$")
     string(REGEX MATCHALL "[0-9]+" MINOR ${TMP})
-    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree3/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_PATCH.*$")
+    file(STRINGS "${EMBREE_INCLUDE_DIR}/embree4/rtcore_version.h" TMP REGEX "^#define RTC_VERSION_PATCH.*$")
     string(REGEX MATCHALL "[0-9]+" PATCH ${TMP})
 
     set (EMBREE_VERSION ${MAJOR}.${MINOR}.${PATCH})

pxr/imaging/plugin/hdEmbree/context.h

@@ -14,7 +14,7 @@
 #include "pxr/base/gf/matrix4f.h"
 #include "pxr/base/vt/array.h"
 
-#include <embree3/rtcore.h>
+#include <embree4/rtcore.h>
 
 PXR_NAMESPACE_OPEN_SCOPE
 

pxr/imaging/plugin/hdEmbree/mesh.cpp

@@ -203,7 +203,7 @@ void HdEmbreeMesh::_EmbreeCullFaces(const RTCFilterFunctionNArguments* args)
             default: break;
         }
         if (cull) {
-            // This is how you reject a hit in embree3 instead of setting
+            // This is how you reject a hit in embree3/4 instead of setting
             // geomId to invalid on the ray
             args->valid[i] = 0;
         }

pxr/imaging/plugin/hdEmbree/mesh.h

@@ -15,8 +15,8 @@
 
 #include "pxr/imaging/plugin/hdEmbree/meshSamplers.h"
 
-#include <embree3/rtcore.h>
-#include <embree3/rtcore_ray.h>
+#include <embree4/rtcore.h>
+#include <embree4/rtcore_ray.h>
 
 PXR_NAMESPACE_OPEN_SCOPE
 

pxr/imaging/plugin/hdEmbree/meshSamplers.h

@@ -12,8 +12,8 @@
 #include "pxr/imaging/hd/meshUtil.h"
 #include "pxr/base/vt/types.h"
 
-#include <embree3/rtcore.h>
-#include <embree3/rtcore_geometry.h>
+#include <embree4/rtcore.h>
+#include <embree4/rtcore_geometry.h>
 
 #include <bitset>
 

pxr/imaging/plugin/hdEmbree/pch.h

@@ -83,9 +83,9 @@
 #undef toupper
 #endif
 #endif // PXR_PYTHON_SUPPORT_ENABLED
-#include <embree3/rtcore.h>
-#include <embree3/rtcore_geometry.h>
-#include <embree3/rtcore_ray.h>
+#include <embree4/rtcore.h>
+#include <embree4/rtcore_geometry.h>
+#include <embree4/rtcore_ray.h>
 #include <tbb/blocked_range.h>
 #include <tbb/cache_aligned_allocator.h>
 #include <tbb/concurrent_hash_map.h>

pxr/imaging/plugin/hdEmbree/renderDelegate.h

@@ -14,7 +14,7 @@
 #include "pxr/base/tf/staticTokens.h"
 
 #include <mutex>
-#include <embree3/rtcore.h>
+#include <embree4/rtcore.h>
 
 PXR_NAMESPACE_OPEN_SCOPE
 

pxr/imaging/plugin/hdEmbree/renderParam.h

@@ -11,7 +11,7 @@
 #include "pxr/imaging/hd/renderDelegate.h"
 #include "pxr/imaging/hd/renderThread.h"
 
-#include <embree3/rtcore.h>
+#include <embree4/rtcore.h>
 
 PXR_NAMESPACE_OPEN_SCOPE
 

pxr/imaging/plugin/hdEmbree/renderer.cpp

@@ -636,9 +636,7 @@ HdEmbreeRenderer::_TraceRay(unsigned int x, unsigned int y,
     rayHit.ray.flags = 0;
     _PopulateRayHit(&rayHit, origin, dir, 0.0f);
     {
-      RTCIntersectContext context;
-      rtcInitIntersectContext(&context);
-      rtcIntersect1(_scene, &context, &rayHit);
+      rtcIntersect1(_scene, &rayHit);
       //
       // there is something odd about how this is used in Embree. Is it reversed
       // here and then when it it used in
@@ -978,9 +976,7 @@ HdEmbreeRenderer::_ComputeAmbientOcclusion(GfVec3f const& position,
         shadow.flags = 0;
         _PopulateRay(&shadow, position, shadowDir, 0.001f);
         {
-          RTCIntersectContext context;
-          rtcInitIntersectContext(&context);
-          rtcOccluded1(_scene,&context,&shadow);
+          rtcOccluded1(_scene,&shadow);
         }
 
         // Record this AO ray's contribution to the occlusion factor: a

pxr/imaging/plugin/hdEmbree/renderer.h

@@ -15,8 +15,8 @@
 #include "pxr/base/gf/matrix4d.h"
 #include "pxr/base/gf/rect2i.h"
 
-#include <embree3/rtcore.h>
-#include <embree3/rtcore_ray.h>
+#include <embree4/rtcore.h>
+#include <embree4/rtcore_ray.h>
 
 #include <random>
 #include <atomic>