From 5845452b8948fba79de6c0513efd38ee56586aea Mon Sep 17 00:00:00 2001
From: cbenthin <carsten.benthin@intel.com>
Date: Sun, 11 Jan 2015 15:01:09 +0100
Subject: [PATCH] bugfix in gridUVTessellator, artifacts in tutorial08 are gone
 now

---
 kernels/common/subdiv/tessellation.h       | 5 +++--
 tutorials/tutorial08/tutorial08_device.cpp | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernels/common/subdiv/tessellation.h b/kernels/common/subdiv/tessellation.h
index 8063e9e72d..90a66554c7 100644
--- a/kernels/common/subdiv/tessellation.h
+++ b/kernels/common/subdiv/tessellation.h
@@ -149,11 +149,12 @@ namespace embree
     {
       mic_i u_i ( step );
       
-      const mic_m m_u = u_i < grid_u_segments;
       const mic_m m_v = v_i < grid_v_segments;
       
       for (unsigned int x=0;x<grid_u_res;x+=16, u_i += 16)
       {
+        const mic_m m_u = u_i < grid_u_segments;
+
 	const mic_f u = select(m_u, mic_f(u_i) * inv_grid_u_segments, 1.0f);
 	const mic_f v = select(m_v, mic_f(v_i) * inv_grid_v_segments, 1.0f);
 	ustore16f(&u_array[index + x],u);
@@ -176,11 +177,11 @@ namespace embree
     {
       avxi u_i ( step );
       
-      const avxb m_u = u_i < grid_u_segments;
       const avxb m_v = v_i < grid_v_segments;
       
       for (unsigned int x=0;x<grid_u_res;x+=8, u_i += 8)
       {
+        const avxb m_u = u_i < grid_u_segments;
 	const avxf u = select(m_u, avxf(u_i) * inv_grid_u_segments, 1.0f);
 	const avxf v = select(m_v, avxf(v_i) * inv_grid_v_segments, 1.0f);
 	storeu8f(&u_array[index + x],u); // FIXME: store not always 8 bytes aligned !!
diff --git a/tutorials/tutorial08/tutorial08_device.cpp b/tutorials/tutorial08/tutorial08_device.cpp
index fd0cf9df36..81bc1dd926 100644
--- a/tutorials/tutorial08/tutorial08_device.cpp
+++ b/tutorials/tutorial08/tutorial08_device.cpp
@@ -228,7 +228,7 @@ Vec3fa renderPixelStandard(float x, float y, const Vec3fa& vx, const Vec3fa& vy,
     shadow.time = 0;
     
     /* trace shadow ray */
-     rtcOccluded(g_scene,shadow);
+    rtcOccluded(g_scene,shadow);
              
     /* add light contribution */
     if (shadow.geomID == RTC_INVALID_GEOMETRY_ID)