diff --git a/apps/imguiapp/camera.xml b/apps/imguiapp/camera.xml
index 70dcdc5c9..b372e5626 100644
--- a/apps/imguiapp/camera.xml
+++ b/apps/imguiapp/camera.xml
@@ -1,5 +1,5 @@
 <camera>
-    <transform m00="0.84706426" m01="0.055642407" m02="0.52856982" m03="3.6311536" m10="-0" m11="0.99450475" m12="-0.10469124" m13="-2.5108399" m20="0.53149056" m21="-0.088680208" m22="-0.84240937" m23="14.730971" m30="0" m31="0" m32="0" m33="1"/>
+    <transform m00="0.84405524" m01="-0.24655433" m02="-0.47621599" m03="14.017809" m10="0" m11="0.88803816" m12="-0.45976967" m13="6.2836771" m20="-0.53625619" m21="-0.388071" m22="-0.74955332" m23="14.579668" m30="0" m31="0" m32="0" m33="1"/>
     <FOV>40</FOV>
     <brightness>0</brightness>
     <contrast>0</contrast>
diff --git a/apps/imguiapp/main.cpp b/apps/imguiapp/main.cpp
index cb936bf3c..2394d7988 100644
--- a/apps/imguiapp/main.cpp
+++ b/apps/imguiapp/main.cpp
@@ -52,13 +52,6 @@ void PrepareScene()
 	// Compensate for different evaluation in PBRT
 	sky->worldToLight = mat4::RotateX( -PI / 2 );
 	scene->SetSkyDome( sky );
-#if 1
-	// escher
-	materialFile = string( "data/materials.xml" );
-	int mesh = renderer->AddMesh( "../_shareddata/escher/escher2010.obj" );
-	int inst = renderer->AddInstance( mesh );
-	renderer->SetNodeTransform( inst, mat4::RotateX( PI / 4 ) * mat4::RotateZ( PI / 2 ) );
-#else
 	// classic scene
 	materialFile = string( "data/pica_materials.xml" );
 	int rootNode = renderer->AddScene( "../_shareddata/pica/scene.gltf" );
@@ -69,7 +62,6 @@ void PrepareScene()
 	int lightQuad = renderer->AddQuad( make_float3( 0, -1, 0 ), make_float3( 0, 21, 0 ), 10.9f, 10.9f, whiteMat );
 	renderer->AddInstance( lightQuad );
 	renderer->AddScene( "../_shareddata/drone/scene.gltf", mat4::Translate( 4.5f, -3.4f, -5.2f ) * mat4::Scale( 0.02f ) );
-#endif
 	// optional animated models
 	// renderer->AddScene( "../_shareddata/CesiumMan.glb", mat4::Translate( 0, -2, -9 ) );
 	// renderer->AddScene( "../_shareddata/project_polly.glb", mat4::Translate( 4.5f, -5.45f, -5.2f ) * mat4::Scale( 2 ) );
@@ -148,8 +140,8 @@ void Initialize()
 
 	// initialize renderer: pick one
 	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_Optix7filter" );			// OPTIX7 core, with filtering (static scenes only for now)
-	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_Optix7" );			// OPTIX7 core, best for RTX devices
-	renderer = RenderAPI::CreateRenderAPI( "RenderCore_OptixPrime_B" );		// OPTIX PRIME, best for pre-RTX CUDA devices
+	renderer = RenderAPI::CreateRenderAPI( "RenderCore_Optix7" );			// OPTIX7 core, best for RTX devices
+	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_OptixPrime_B" );		// OPTIX PRIME, best for pre-RTX CUDA devices
 	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_PrimeRef" );			// REFERENCE, for image validation
 	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_SoftRasterizer" );	// RASTERIZER, your only option if not on NVidia
 	// renderer = RenderAPI::CreateRenderAPI( "RenderCore_Minimal" );			// MINIMAL example, to get you started on your own core
diff --git a/apps/imguiapp/main_tools.h b/apps/imguiapp/main_tools.h
index 22a1760a1..e7e18211d 100644
--- a/apps/imguiapp/main_tools.h
+++ b/apps/imguiapp/main_tools.h
@@ -37,8 +37,8 @@ void ReshapeWindowCallback( GLFWwindow* window, int w, int h )
 void KeyEventCallback( GLFWwindow* window, int key, int scancode, int action, int mods )
 {
 	if (key == GLFW_KEY_ESCAPE) running = false;
-	if (action == GLFW_PRESS) keystates[key] = true;
-	else if (action == GLFW_RELEASE) keystates[key] = false;
+	if (action == GLFW_PRESS && key >= 0 && key < 1024) keystates[key] = true;
+	else if (action == GLFW_RELEASE && key >= 0 && key < 1024) keystates[key] = false;
 }
 void CharEventCallback( GLFWwindow* window, uint code ) { /* nothing here yet */ }
 void WindowFocusCallback( GLFWwindow* window, int focused ) { hasFocus = (focused == GL_TRUE); }
diff --git a/apps/imguiapp/nvrtc-builtins64_102.dll b/apps/imguiapp/nvrtc-builtins64_102.dll
new file mode 100644
index 000000000..9ad603a4b
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diff --git a/apps/imguiapp/nvrtc64_102_0.dll b/apps/imguiapp/nvrtc64_102_0.dll
new file mode 100644
index 000000000..d2ebb14dc
Binary files /dev/null and b/apps/imguiapp/nvrtc64_102_0.dll differ
diff --git a/apps/imguiapp/optix.6.0.0.dll b/apps/imguiapp/optix.6.0.0.dll
new file mode 100644
index 000000000..d4df47fe9
Binary files /dev/null and b/apps/imguiapp/optix.6.0.0.dll differ
diff --git a/apps/pbrtdemoapp/nvrtc-builtins64_102.dll b/apps/pbrtdemoapp/nvrtc-builtins64_102.dll
new file mode 100644
index 000000000..9ad603a4b
Binary files /dev/null and b/apps/pbrtdemoapp/nvrtc-builtins64_102.dll differ
diff --git a/apps/pbrtdemoapp/nvrtc64_102_0.dll b/apps/pbrtdemoapp/nvrtc64_102_0.dll
new file mode 100644
index 000000000..d2ebb14dc
Binary files /dev/null and b/apps/pbrtdemoapp/nvrtc64_102_0.dll differ