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gallium: add a cap for VIEWPORT_SUBPIXEL_BITS (v2)

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This allows Gallium drivers to advertise the subpixel precision
for floating point viewports bounds.

v2:
  - Set ViewportSubpixelBits in st_init_limits.

Signed-off-by: Józef Kucia <joseph.kucia@gmail.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Józef Kucia
2016-07-19 13:07:24 +02:00
committed by Marek Olšák
parent 3c78d89692
commit 3cd28fe3de
18 changed files with 21 additions and 0 deletions
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2
src/gallium/docs/source/screen.rst
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@@ -345,6 +345,8 @@ The integer capabilities:
supported in ``set_window_rectangles``.
* ``PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED``: If true, the driver implements support
for ``pipe_rasterizer_state::offset_units_unscaled``.
* ``PIPE_CAP_VIEWPORT_SUBPIXEL_BITS``: Number of bits of subpixel precision for
floating point viewport bounds.
.. _pipe_capf: