diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/docs/source/cso/rasterizer.rst | 135 |
1 files changed, 80 insertions, 55 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index 56a601a8d0..ad1612f93e 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -46,6 +46,78 @@ There are several important exceptions to the specification of this rule. second vertex, not the first. This permits each segment of the fan to have a different color. +Polygons +-------- + +light_twoside +^^^^^^^^^^^^^ + +If set, there are per-vertex back-facing colors. The hardware +(perhaps assisted by :ref:`Draw`) should be set up to use this state +along with the front/back information to set the final vertex colors +prior to rasterization. + +The frontface vertex shader color output is marked with TGSI semantic +COLOR[0], and backface COLOR[1]. + +front_ccw + Indicates whether the window order of front-facing polygons is + counter-clockwise (TRUE) or clockwise (FALSE). + +cull_mode + Indicates which faces of polygons to cull, either PIPE_FACE_NONE + (cull no polygons), PIPE_FACE_FRONT (cull front-facing polygons), + PIPE_FACE_BACK (cull back-facing polygons), or + PIPE_FACE_FRONT_AND_BACK (cull all polygons). + +fill_front + Indicates how to fill front-facing polygons, either + PIPE_POLYGON_MODE_FILL, PIPE_POLYGON_MODE_LINE or + PIPE_POLYGON_MODE_POINT. +fill_back + Indicates how to fill back-facing polygons, either + PIPE_POLYGON_MODE_FILL, PIPE_POLYGON_MODE_LINE or + PIPE_POLYGON_MODE_POINT. + +poly_stipple_enable + Whether polygon stippling is enabled. +poly_smooth + Controls OpenGL-style polygon smoothing/antialiasing + +offset_point + If set, point-filled polygons will have polygon offset factors applied +offset_line + If set, line-filled polygons will have polygon offset factors applied +offset_tri + If set, filled polygons will have polygon offset factors applied + +offset_units + Specifies the polygon offset bias +offset_scale + Specifies the polygon offset scale + + + +Lines +----- + +line_width + The width of lines. +line_smooth + Whether lines should be smoothed. Line smoothing is simply anti-aliasing. +line_stipple_enable + Whether line stippling is enabled. +line_stipple_pattern + 16-bit bitfield of on/off flags, used to pattern the line stipple. +line_stipple_factor + When drawing a stippled line, each bit in the stipple pattern is + repeated N times, where N = line_stipple_factor + 1. +line_last_pixel + Controls whether the last pixel in a line is drawn or not. OpenGL + omits the last pixel to avoid double-drawing pixels at the ends of lines + when drawing connected lines. + + Points ------ @@ -89,68 +161,21 @@ coordinates are not generated. Some renderers always internally translate points into quads; this state still affects those renderers by overriding other rasterization state. -Other Members -^^^^^^^^^^^^^ - -light_twoside - If set, there are per-vertex back-facing colors. :ref:`Draw` - uses this state along with the front/back information to set the - final vertex colors prior to rasterization. - -front_winding - Indicates the window order of front-facing polygons, either - PIPE_WINDING_CW or PIPE_WINDING_CCW - -cull_mode - Indicates which polygons to cull, either PIPE_WINDING_NONE (cull no - polygons), PIPE_WINDING_CW (cull clockwise-winding polygons), - PIPE_WINDING_CCW (cull counter clockwise-winding polygons), or - PIPE_WINDING_BOTH (cull all polygons). - -fill_cw - Indicates how to fill clockwise polygons, either PIPE_POLYGON_MODE_FILL, - PIPE_POLYGON_MODE_LINE or PIPE_POLYGON_MODE_POINT. -fill_ccw - Indicates how to fill counter clockwise polygons, either - PIPE_POLYGON_MODE_FILL, PIPE_POLYGON_MODE_LINE or PIPE_POLYGON_MODE_POINT. - -poly_stipple_enable - Whether polygon stippling is enabled. -poly_smooth - Controls OpenGL-style polygon smoothing/antialiasing -offset_cw - If set, clockwise polygons will have polygon offset factors applied -offset_ccw - If set, counter clockwise polygons will have polygon offset factors applied -offset_units - Specifies the polygon offset bias -offset_scale - Specifies the polygon offset scale - -line_width - The width of lines. -line_smooth - Whether lines should be smoothed. Line smoothing is simply anti-aliasing. -line_stipple_enable - Whether line stippling is enabled. -line_stipple_pattern - 16-bit bitfield of on/off flags, used to pattern the line stipple. -line_stipple_factor - When drawing a stippled line, each bit in the stipple pattern is - repeated N times, where N = line_stipple_factor + 1. -line_last_pixel - Controls whether the last pixel in a line is drawn or not. OpenGL - omits the last pixel to avoid double-drawing pixels at the ends of lines - when drawing connected lines. - point_smooth Whether points should be smoothed. Point smoothing turns rectangular points into circles or ovals. point_size_per_vertex - Whether vertices have a point size element. + Whether the vertex shader is expected to have a point size output. + Undefined behaviour is permitted if there is disagreement between + this flag and the actual bound shader. point_size The size of points, if not specified per-vertex. + + +Other Members +------------- + scissor Whether the scissor test is enabled. |