gallium: Add support for multiple viewports

Gallium supported only a single viewport/scissor combination. This
commit changes the interface to allow us to add support for multiple
viewports/scissors.

Signed-off-by: Zack Rusin <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: José Fonseca<[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>

1 files changed, 5 insertions, 3 deletions

diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst
index 2cc1848be6a..679772fae81 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -68,13 +68,15 @@ objects. They all follow simple, one-method binding calls, e.g.
 * ``set_sample_mask``
 * ``set_clip_state``
 * ``set_polygon_stipple``
-* ``set_scissor_state`` sets the bounds for the scissor test, which culls
+* ``set_scissor_states`` sets the bounds for the scissor test, which culls
   pixels before blending to render targets. If the :ref:`Rasterizer` does
   not have the scissor test enabled, then the scissor bounds never need to
   be set since they will not be used.  Note that scissor xmin and ymin are
   inclusive, but  xmax and ymax are exclusive.  The inclusive ranges in x
-  and y would be [xmin..xmax-1] and [ymin..ymax-1].
-* ``set_viewport_state``
+  and y would be [xmin..xmax-1] and [ymin..ymax-1]. The number of scissors
+  should be the same as the number of set viewports and can be up to
+  PIPE_MAX_VIEWPORTS.
+* ``set_viewport_states``
 
 
 Sampler Views