option optimize_for = LITE_RUNTIME;

message ShaderVariableProto {
  optional uint32 type = 1;
  optional uint32 precision = 2;
  optional string name = 3;
  optional string mapped_name = 4;
  optional uint32 array_size = 5;
  optional bool static_use = 6;
  repeated ShaderVariableProto fields = 7;
  optional string struct_name = 8;
}

message ShaderAttributeProto {
  optional ShaderVariableProto basic = 1;
  optional int32 location = 2;
}

message ShaderUniformProto {
  optional ShaderVariableProto basic = 1;
}

message ShaderVaryingProto {
  optional ShaderVariableProto basic = 1;
  optional int32 interpolation = 2;
  optional bool is_invariant = 3;
}

message ShaderProto {
  optional bytes sha = 1;
  repeated ShaderAttributeProto attribs = 2;
  repeated ShaderUniformProto uniforms = 3;
  repeated ShaderVaryingProto varyings = 4;
}

message GpuProgramProto {
  optional bytes sha = 1;
  optional uint32 format = 2;
  optional bytes program = 3;

  optional ShaderProto vertex_shader = 4;
  optional ShaderProto fragment_shader = 5;
}