From d9838f653a48e06d1518aca86613f27f2c2293ac Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Fri, 19 Apr 2019 19:11:34 -0400 Subject: [PATCH] gallium: document conservative rasterization flags Reviewed-by: Kenneth Graunke --- src/gallium/docs/source/screen.rst | 5 +++++ src/gallium/include/pipe/p_defines.h | 11 +++++++++++ 2 files changed, 16 insertions(+) diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index 59c0103539c..fcb16aebe2d 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -456,10 +456,15 @@ The integer capabilities: as opposed to padding to vec4s. * ``PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES``: Whether the ``PIPE_CONSERVATIVE_RASTER_POST_SNAP`` mode is supported for triangles. + The post-snap mode means the conservative rasterization occurs after + the conversion from floating-point to fixed-point coordinates + on the subpixel grid. * ``PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES``: Whether the ``PIPE_CONSERVATIVE_RASTER_POST_SNAP`` mode is supported for points and lines. * ``PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES``: Whether the ``PIPE_CONSERVATIVE_RASTER_PRE_SNAP`` mode is supported for triangles. + The pre-snap mode means the conservative rasterization occurs before + the conversion from floating-point to fixed-point coordinates. * ``PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES``: Whether the ``PIPE_CONSERVATIVE_RASTER_PRE_SNAP`` mode is supported for points and lines. * ``PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE``: Whether diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index 61c1a5335b5..304c3dcb2bb 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -644,7 +644,18 @@ enum pipe_reset_status enum pipe_conservative_raster_mode { PIPE_CONSERVATIVE_RASTER_OFF, + + /** + * The post-snap mode means the conservative rasterization occurs after + * the conversion from floating-point to fixed-point coordinates + * on the subpixel grid. + */ PIPE_CONSERVATIVE_RASTER_POST_SNAP, + + /** + * The pre-snap mode means the conservative rasterization occurs before + * the conversion from floating-point to fixed-point coordinates. + */ PIPE_CONSERVATIVE_RASTER_PRE_SNAP, }; -- 2.30.2