Transform Feedback

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Transform Feedback
Core in version 4.5
Core since version 3.0
Core ARB extension

ARB_transform_feedback2, ARB_transform_feedback3,

ARB_transform_feedback_instanced
EXT extension EXT_transform_feedback
Vendor extension NV_transform_feedback

Transform Feedback is the process of altering the rendering pipeline so that primitives processed by a Vertex Shader and optionally a Geometry Shader will be written to buffer objects. This allows one to preserve the post-transform rendering state of an object and resubmit this data multiple times.

Reference