Test/spv.subgroupBallotNeg.comp

   1 #version 450\r
   2 \r
   3 #extension GL_KHR_shader_subgroup_ballot: enable\r
   4 \r
   5 layout (local_size_x = 8, local_size_y = 8, local_size_z = 1) in;\r
   6 \r
   7 layout(binding = 0) buffer Buffers\r
   8 {\r
   9     vec4  f4;\r
  10     ivec4 i4;\r
  11     uvec4 u4;\r
  12     dvec4 d4;\r
  13 } data[4];\r
  14 \r
  15 void main()\r
  16 {\r
  17     uint invocation = (gl_SubgroupInvocationID + gl_SubgroupSize) % 4;\r
  18 \r
  19     uvec4 relMask = gl_SubgroupEqMask +\r
  20                        gl_SubgroupGeMask +\r
  21                        gl_SubgroupGtMask +\r
  22                        gl_SubgroupLeMask +\r
  23                        gl_SubgroupLtMask;\r
  24 \r
  25     uvec4 result = subgroupBallot(true);\r
  26 \r
  27     data[invocation].u4.x = subgroupBallotBitCount(result);\r
  28     data[invocation].u4.y = subgroupBallotBitExtract(result, 0) ? 1 : 0;\r
  29     data[invocation].u4.z = subgroupBallotInclusiveBitCount(result) + subgroupBallotExclusiveBitCount(result);\r
  30     data[invocation].u4.w = subgroupBallotFindLSB(result) + subgroupBallotFindMSB(result);\r
  31 \r
  32     data[invocation].f4.x   = subgroupBroadcast(data[0].f4.x,    invocation);  // ERROR: not constant\r
  33 }\r