diff options
author | Roland Scheidegger <[email protected]> | 2010-02-04 21:35:28 +0100 |
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committer | Roland Scheidegger <[email protected]> | 2010-02-04 21:35:28 +0100 |
commit | 68f93ea3eb83cfad014b8ec93cec3564c1aa9833 (patch) | |
tree | a563ebec246a2e741750a8b5198da180e9479e17 /src/gallium/docs/source/cso/rasterizer.rst | |
parent | 2c326e72664e65166c68b027b26aaf373f3be36d (diff) |
gallium: add point_quad_rasterization bit to rasterizer state
This determines if points should be rasterized according to GL point rules
or as normal quads (GL point sprites / d3d points / d3d point sprites).
Diffstat (limited to 'src/gallium/docs/source/cso/rasterizer.rst')
-rw-r--r-- | src/gallium/docs/source/cso/rasterizer.rst | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index 721229d67d3..00d65fc598a 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -85,8 +85,10 @@ point_size 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. + point sprites are effectively disabled, though points may still be + rendered slightly different according to point_quad_rasterization. + If any coord is non-zero, point_smooth should be disabled, and + point_quad_rasterization enabled. If enabled, the four vertices of the resulting quad will be assigned texture coordinates, according to sprite_coord_mode. sprite_coord_mode @@ -103,6 +105,14 @@ sprite_coord_mode Note that when geometry shaders are available, this state could be removed. A special geometry shader defined by the state tracker could convert the incoming points into quads with the proper texture coords. +point_quad_rasterization + This determines if points should be rasterized as quads or points. + d3d always uses quad rasterization for points, regardless if point sprites + are enabled or not, but OGL has different rules. If point_quad_rasterization + is set, point_smooth should be disabled, and points will be rendered as + squares even if multisample is enabled. + sprite_coord_enable should be zero if point_quad_rasterization is not + enabled. scissor Whether the scissor test is enabled. |