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| -rw-r--r-- | src/gallium/docs/source/cso/rasterizer.rst | 76 |
1 files changed, 75 insertions, 1 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index 145ce259bb..b87d121db3 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -7,4 +7,78 @@ interpolated into fragments. Members ------- -XXX +XXX undocumented light_twoside, front_winding, cull_mode, fill_cw, fill_ccw, offset_cw, offset_ccw +XXX moar undocumented poly_smooth, line_stipple_factor, line_last_pixel, offset_units, offset_scale +XXX sprite_coord_mode + +flatshade + If set, the provoking vertex of each polygon is used to determine the + color of the entire polygon. If not set, the color fragments will be + interpolated from each vertex's color. +scissor + Whether the scissor test is enabled. +poly_stipple_enable + Whether polygon stippling is enabled. +point_smooth + Whether points should be smoothed. Point smoothing turns rectangular + points into circles or ovals. +point_sprite + Whether point sprites are enabled. +point_size_per_vertex + Whether vertices have a point size element. +multisample + Whether MSAA is enabled. +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. +bypass_vs_clip_and_viewport + Whether the entire TCL pipeline should be bypassed. This implies that + vertices are pre-transformed for the viewport, and will not be run + through the vertex shader. Note that implementations may still clip away + vertices that are not in the viewport. +flatshade_first + Whether the first vertex should be the provoking vertex, for most + primitives. If not set, the last vertex is the provoking vertex. +gl_rasterization_rules + Whether the rasterizer should use (0.5, 0.5) pixel centers. When not set, + the rasterizer will use (0, 0) for pixel centers. +line_width + The width of lines. +point_size + The size of points, if not specified per-vertex. +point_size_min + The minimum size of points. +point_size_max + The maximum size of points. + +Notes +----- + +flatshade +^^^^^^^^^ + +The actual interpolated shading algorithm is obviously +implementation-dependent, but will usually be Gourard for most hardware. + +bypass_vs_clip_and_viewport +^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +When set, this implies that vertices are pre-transformed for the viewport, and +will not be run through the vertex shader. Note that implementations may still +clip away vertices that are not visible. + +flatshade_first +^^^^^^^^^^^^^^^ + +There are several important exceptions to the specification of this rule. + +* PIPE_PRIMITIVE_POLYGON: The provoking vertex is always the first vertex. + If the caller wishes to change the provoking vertex, they merely need to + rotate the vertices themselves. +* PIPE_PRIMITIVE_QUAD, PIPE_PRIMITIVE_QUAD_STRIP: This option has no effect. +* PIPE_PRIMITIVE_TRIANGLE_FAN: When set, the provoking vertex is the second + vertex, not the first. This permits each segment of the fan to have a + different color. |