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-rw-r--r--src/gallium/docs/source/context.rst16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst
index f0d3b84783..cdd84bf99c 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -354,6 +354,22 @@ Any pointers into the map should be considered invalid and discarded.
Basically get_transfer, transfer_map, data write, transfer_unmap, and
transfer_destroy all in one.
+
+The box parameter to some of these functions defines a 1D, 2D or 3D
+region of pixels. This is self-explanatory for 1D, 2D and 3D texture
+targets.
+
+For PIPE_TEXTURE_1D_ARRAY, the box::y and box::height fields refer to the
+array dimension of the texture.
+
+For PIPE_TEXTURE_2D_ARRAY, the box::z and box::depth fields refer to the
+array dimension of the texture.
+
+For PIPE_TEXTURE_CUBE, the box:z and box::depth fields refer to the
+faces of the cube map (z + depth <= 6).
+
+
+
.. _transfer_flush_region:
transfer_flush_region