copyright (c) 2003-2010 by Apple, Inc., all rights reserved. description This patch computes normals given vertices and optionally indices by averaging the 3 immediately connected neighboring triangle normals frameworkVersion 162 inputParameters X_Count 0 Y_Count 0 name Grid Normals Generator portAttributes X_Count name size (X) Y_Count name size (Y) rootPatch class QCPatch state nodes class QCOpenCL key OpenCL_1 state automaticOutputDimensions 1 automaticThreadDimensions 1 customPixelFormat 0 deviceIndex 0 sampleString Unknown msec selectedKernel 0 settingsVisible 0 sourceCode __kernel void normalGenerator(__global const float4 *vertices, uint2 size, __global float4 *normals) { size_t tid = get_global_id(0), count = get_global_size(0), x = tid % size.x, y = tid / size.x; float4 normal, vertex[5]; int weight[5]; vertex[0] = vertices[tid]; vertex[1] = vertices[(x < size.x - 1) ? tid + 1 : tid]; vertex[2] = vertices[(y > 0) ? tid - size.x : tid]; vertex[3] = vertices[(x > 0) ? tid - 1 : tid]; vertex[4] = vertices[(y < size.y - 1) ? tid + size.x : tid]; //We compute the average of the normals of the 4 adjacent triangles to the vertex normal = (float4)(0., 0., 0., 0.); normal += cross(vertex[1] - vertex[0], vertex[2] - vertex[0]); normal += cross(vertex[2] - vertex[0], vertex[3] - vertex[0]); normal += cross(vertex[3] - vertex[0], vertex[4] - vertex[0]); normal += cross(vertex[4] - vertex[0], vertex[1] - vertex[0]); normal = fast_normalize(normal); normals[tid] = normal; } useBestDevice 1 useLocalKernel 1 userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpApKEhIQITlNTdHJpbmcBlYQBKwRuYW1lhpKEl5gRIm5vcm1hbEdlbmVyYXRvciKGkoSXmAhwb3NpdGlvboaShISEB05TVmFsdWUAlYQBKoSEDHtDR1BvaW50PWRkfZuBKAKBwQCGhg== version 1 publishedInputPorts key Vertices node OpenCL_1 port vertices state userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpAZKEhIQITlNTdHJpbmcBlYQBKwRuYW1lhpKEl5gIVmVydGljZXOGhg== key X_Count node OpenCL_1 port size_X state userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpAZKEhIQITlNTdHJpbmcBlYQBKwRuYW1lhpKEl5gHWCBDb3VudIaG key Y_Count node OpenCL_1 port size_Y state userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpAZKEhIQITlNTdHJpbmcBlYQBKwRuYW1lhpKEl5gHWSBDb3VudIaG publishedOutputPorts key Normals node OpenCL_1 port normals state userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpAZKEhIQITlNTdHJpbmcBlYQBKwRuYW1lhpKEl5gHTm9ybWFsc4aG userInfo BAtzdHJlYW10eXBlZIHoA4QBQISEhBNOU011dGFibGVEaWN0aW9uYXJ5AISEDE5TRGljdGlvbmFyeQCEhAhOU09iamVjdACFhAFpA5KEhIQITlNTdHJpbmcBlYQBKwhwb3NpdGlvboaShISEB05TVmFsdWUAlYQBKoSEDHtDR1BvaW50PWRkfZsAAYaShJeYCXNjcm9sbGluZ4aShJmampuDAAAAAABEgkCBSAGGkoSXmAp6b29tRmFjdG9yhpKEhIQITlNOdW1iZXIAmZqEhAFmnQGGhg==