2012 Khronos Group glDispatchComputeIndirect 3G glDispatchComputeIndirect launch one or more compute work groups using parameters stored in a buffer void glDispatchComputeIndirect GLintptr indirect indirect The offset into the buffer object currently bound to the GL_DISPATCH_INDIRECT_BUFFER buffer target at which the dispatch parameters are stored. glDispatchComputeIndirect launches one or more compute work groups using parameters stored in the buffer object currently bound to the GL_DISPATCH_INDIRECT_BUFFER target. Each work group is processed by the active program object for the compute shader stage. While the individual shader invocations within a work group are executed as a unit, work groups are executed completely independently and in unspecified order. indirect contains the offset into the data store of the buffer object bound to the GL_DISPATCH_INDIRECT_BUFFER target at which the parameters are stored. The parameters addressed by indirect are packed a structure, which takes the form (in C): A call to glDispatchComputeIndirect is equivalent, assuming no errors are generated, to: num_groups_x, cmd->num_groups_y, cmd->num_groups_z); }]]> Unlike glDispatchCompute, no error is generated if any of the num_groups_x, num_groups_y or num_groups_z members of the DispatchIndirectCommand is larger than the value of GL_MAX_COMPUTE_WORK_GROUP_COUNT for the corresponding dimension. In such circumstances, behavior is undefined and may lead to application termination. GL_INVALID_OPERATION is generated if there is no active program for the compute shader stage. GL_INVALID_VALUE is generated if indirect is less than zero or not a multiple of four. GL_INVALID_OPERATION is generated if no buffer is bound to the GL_DISPATCH_INDIRECT_BUFFER target or if the command would source data beyond the end of the buffer object's data store. glGet with argument GL_MAX_COMPUTE_WORK_GROUP_COUNT glDispatchCompute. Copyright 2012 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.