diff --git a/hydra_drv/GPUOCLLayer.cpp b/hydra_drv/GPUOCLLayer.cpp
index b204c35..a3108a2 100644
--- a/hydra_drv/GPUOCLLayer.cpp
+++ b/hydra_drv/GPUOCLLayer.cpp
@@ -539,7 +539,7 @@ GPUOCLLayer::GPUOCLLayer(int w, int h, int a_flags, int a_deviceId) : Base(w, h,
   m_clglSharing = 0;
   int clglIsSupported = clglSharingIsSupported(m_globals.device);
 
-  cl_int ciErr1;
+  cl_int ciErr1 = CL_SUCCESS;
  
   if ((a_flags & GPU_RT_NOWINDOW) || (clglIsSupported == 0))
   {
diff --git a/hydra_drv/cbidir.h b/hydra_drv/cbidir.h
index b2ed94f..eb12a53 100644
--- a/hydra_drv/cbidir.h
+++ b/hydra_drv/cbidir.h
@@ -558,6 +558,7 @@ static inline float3 environmentColorExtended(float3 ray_pos, float3 ray_dir, Mi
   else
   {
     envColor = environmentColor(ray_dir, misPrev, flags, a_globals, in_mtlStorage, in_pdfStorage, in_texStorage1);
+    
     const uint rayBounce     = unpackBounceNum(flags);
     unsigned int otherFlags  = unpackRayFlags(flags);
     const int backTextureId  = a_globals->varsI[HRT_SHADOW_MATTE_BACK];
diff --git a/hydra_drv/clight.h b/hydra_drv/clight.h
index 4ef9fff..f8b17c2 100644
--- a/hydra_drv/clight.h
+++ b/hydra_drv/clight.h
@@ -320,6 +320,9 @@ static inline float evalMap2DPdf(const float2 texCoordT, __global const float* i
   if (pixelX < 0) pixelX += sizeX;
   if (pixelY < 0) pixelY += sizeY;
 
+  if (pixelX < 0 || pixelY < 0)
+    return 1.0f;
+
   const int pixelOffset = pixelY*sizeX + pixelX;
   const int maxSize = sizeX*sizeY;
   const int offset0 = (pixelOffset + 0 < maxSize) ? pixelOffset + 0 : maxSize - 1;