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Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/context.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index 5342fc25dc1..e09a1304c4d 100644 --- a/src/gallium/docs/source/context.rst +++ b/src/gallium/docs/source/context.rst @@ -156,6 +156,15 @@ If there is an index buffer bound, and ``indexed`` field is true, all vertex indices will be looked up in the index buffer. ``min_index``, ``max_index``, and ``index_bias`` apply after index lookup. +When drawing indexed primitives, the primitive restart index can be +used to draw disjoint primitive strips. For example, several separate +line strips can be drawn by designating a special index value as the +restart index. The ``primitive_restart`` flag enables/disables this +feature. The ``restart_index`` field specifies the restart index value. + +When primitive restart is in use, array indexes are compared to the +restart index before adding the index_bias offset. + If a given vertex element has ``instance_divisor`` set to 0, it is said it contains per-vertex data and effective vertex attribute address needs to be recalculated for every index. |