}
 
         // load SWR_VERTEX_BUFFER_STATE::pData
-        Value *stream = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_pData});
+        Value *stream = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_xpData});
 
         // load SWR_VERTEX_BUFFER_STATE::pitch
         Value *stride = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_pitch});
         SWR_ASSERT((info.bpp != 0), "Unsupported format in JitGatherVertices.");
         uint32_t bpc = info.bpp / info.numComps;  ///@todo Code below assumes all components are same size. Need to fix.
 
-        Value *stream = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_pData});
+        Value *stream = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_xpData});
 
         // VGATHER* takes an *i8 src pointer
-        Value *pStreamBase = BITCAST(stream, PointerType::get(mInt8Ty, 0));
+        Value *pStreamBase = INT_TO_PTR(stream, PointerType::get(mInt8Ty, 0));
 
         Value *stride = LOAD(streams, {ied.StreamIndex, SWR_VERTEX_BUFFER_STATE_pitch});
 #if USE_SIMD16_GATHERS
         // calculate byte offset to the start of the VB
         Value* baseOffset = MUL(Z_EXT(startOffset, mInt64Ty), Z_EXT(stride, mInt64Ty));
         pStreamBase = GEP(pStreamBase, baseOffset);
+        Value* pStreamBaseGFX = ADD(stream, baseOffset);
 
         // if we have a start offset, subtract from max vertex. Used for OOB check
         maxVertex = SUB(Z_EXT(maxVertex, mInt64Ty), Z_EXT(startOffset, mInt64Ty));
                                 // But, we know that elements must be aligned for FETCH. :)
                                 // Right shift the offset by a bit and then scale by 2 to remove the sign extension.
                                 Value *vShiftedOffsets = LSHR(vOffsets, 1);
-                                vVertexElements[currentVertexElement++] = GATHERPS(gatherSrc, pStreamBase, vShiftedOffsets, vGatherMask, 2);
+                                vVertexElements[currentVertexElement++] = GATHERPS(gatherSrc, pStreamBaseGFX, vShiftedOffsets, vGatherMask, 2);
                             }
                             else
                             {
 
                         // offset base to the next component in the vertex to gather
                         pStreamBase = GEP(pStreamBase, C((char)4));
+                        pStreamBaseGFX = ADD(pStreamBaseGFX, C((int64_t)4));
 #endif
                     }
                 }