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authorRoland Scheidegger <sroland@vmware.com>2010-02-03 17:39:47 +0100
committerRoland Scheidegger <sroland@vmware.com>2010-02-03 17:39:47 +0100
commitc2b85e335dd798facb8ec43a4bb00fe0e05cf863 (patch)
treedc29a32359b42b8a4583e467185c3fbade2bdcdb /src/gallium/docs/source/cso
parent4a4daa75a85db22cd37ebd533ebbccb427e07077 (diff)
docs: fix point sprite documentation
Diffstat (limited to 'src/gallium/docs/source/cso')
-rw-r--r--src/gallium/docs/source/cso/rasterizer.rst19
1 files changed, 10 insertions, 9 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst
index 89c3c061f0..721229d67d 100644
--- a/src/gallium/docs/source/cso/rasterizer.rst
+++ b/src/gallium/docs/source/cso/rasterizer.rst
@@ -82,17 +82,18 @@ point_size_per_vertex
Whether vertices have a point size element.
point_size
The size of points, if not specified per-vertex.
-point_sprite
- Whether points are drawn as sprites (textured quads). This is mutually
- exclusive with point_smooth. Note that sprite_coord_mode set to
- PIPE_SPRITE_COORD_NONE for all coords and point_sprite enabled is basically
- equivalent to point_sprite disabled.
+sprite_coord_enable
+ Specifies if a coord has its texture coordinates replaced or not. This
+ is a packed bitfield containing the enable for all coords - if all are 0
+ point sprites are effectively disabled. If any coord is non-zero,
+ point_smooth should be disabled.
+ If enabled, the four vertices of the resulting quad will be assigned
+ texture coordinates, according to sprite_coord_mode.
sprite_coord_mode
Specifies how the value for each shader output should be computed when
- drawing sprites. If PIPE_SPRITE_COORD_NONE, don't change the vertex
- shader output. Otherwise, the four vertices of the resulting quad will
- be assigned texture coordinates. For PIPE_SPRITE_COORD_LOWER_LEFT, the
- lower left vertex will have coordinate (0,0,0,1).
+ drawing sprites, for each coord which has sprite_coord_enable set.
+ For PIPE_SPRITE_COORD_LOWER_LEFT, the lower left vertex will have
+ coordinate (0,0,0,1).
For PIPE_SPRITE_COORD_UPPER_LEFT, the upper-left vertex will have
coordinate (0,0,0,1).
This state is needed by the 'draw' module because that's where each