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| author | Axel Davy <axel.davy@ens.fr> | 2016-06-13 22:28:32 +0200 |
|---|---|---|
| committer | Axel Davy <axel.davy@ens.fr> | 2016-06-25 10:16:15 +0200 |
| commit | 59a692916ca251db995050f7fc0bb7b4e6e4780b (patch) | |
| tree | 1bd5a11a8ac89a04e24b0ed61f39f5f5002fd9fa /src/gallium/docs | |
| parent | 727a9b24933d384f5440ed4318fb720ed11d6dd1 (diff) | |
| download | external_mesa3d-59a692916ca251db995050f7fc0bb7b4e6e4780b.zip external_mesa3d-59a692916ca251db995050f7fc0bb7b4e6e4780b.tar.gz external_mesa3d-59a692916ca251db995050f7fc0bb7b4e6e4780b.tar.bz2 | |
gallium: Add a cap for offset_units_unscaled
D3D9 has a different behaviour for depth bias.
For OGL/D3D1X, the depth bias unit is the
minimal resolvable value for the depth buffer,
which depends on the format (and has different
behaviour for float depth buffers).
For D3D9, the depth bias unit is 1.0f.
Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/cso/rasterizer.rst | 6 | ||||
| -rw-r--r-- | src/gallium/docs/source/screen.rst | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index 8d473b8..616e451 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -127,6 +127,12 @@ offset_tri offset_units Specifies the polygon offset bias +offset_units_unscaled + Specifies the unit of the polygon offset bias. If false, use the + GL/D3D1X behaviour. If true, offset_units is a floating point offset + which isn't scaled (D3D9). Note that GL/D3D1X behaviour has different + formula whether the depth buffer is unorm or float, which is not + the case for D3D9. offset_scale Specifies the polygon offset scale offset_clamp diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index a20b372..141b45a 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -343,6 +343,8 @@ The integer capabilities: * ``PIPE_CAP_TGSI_VOTE``: Whether the ``VOTE_*`` ops can be used in shaders. * ``PIPE_CAP_MAX_WINDOW_RECTANGLES``: The maxium number of window rectangles 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_capf: |