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Name

glDispatchCompute — launch one or more compute work groups

C Specification

void glDispatchCompute(GLuint num_groups_x,
 GLuint num_groups_y,
 GLuint num_groups_z);
 

Parameters

num_groups_x

The number of work groups to be launched in the X dimension.

num_groups_y

The number of work groups to be launched in the Y dimension.

num_groups_z

The number of work groups to be launched in the Z dimension.

Description

glDispatchCompute launches one or more compute work groups. 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. num_groups_x, num_groups_y and num_groups_z specify the number of local work groups that will be dispatched in the X, Y and Z dimensions, respectively.

Errors

GL_INVALID_OPERATION is generated if there is no active program for the compute shader stage.

GL_INVALID_VALUE is generated if any of num_groups_x, num_groups_y, or num_groups_z is greater than or equal to the maximum work-group count for the corresponding dimension.

Associated Gets

glGet with argument GL_MAX_COMPUTE_WORK_GROUP_COUNT

Copyright

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/.