Lines Matching refs:distance

40     Ideally, the fog distance (used to compute the fog factor as
42     Euclidean distance to the fragment center from the eye.  In practice,
44     distance from the eye to each fragment center by abs(ze).  Further,
49     OpenGL computes the distance used in computing the fog factor.
51     The extension supports three fog distance modes: "eye plane absolute",
52     where the fog distance is the absolute planar distance from the eye
54     "eye plane", where the fog distance is the signed planar distance
55     from the eye plane; and "eye radial", where the fog distance is
56     computed as a Euclidean distance.  In the case of the eye radial
57     fog distance mode, the distance may be computed per-vertex and then
66     view, but this assumes that either the eye radial fog distance is
67     computed per-fragment, or if the fog distance is computed per-vertex
81       the default fog distance mode is left implementation dependent.
83       fast EYE_RADIAL_NV fog distance to be stuck using something less.
92       then the fog distance mode is ignored.  However, the fog
93       distance mode is used when the FOG_COORDINATE_SOURCE_EXT is
95       functionality is enabled, the fog distance is supplied by the
96       user-supplied fog-coordinate so no automatic fog distance computation
131     constant determines how the fog distance should be computed."
136     "When the fog distance mode is EYE_PLANE_ABSOLUTE_NV, the fog
137     distance z is approximated by abs(ze) [where ze is the Z component
138     of the fragment's eye position].  When the fog distance mode is
139     EYE_PLANE, the fog distance z is approximated by ze.  When the
140     fog distance mode is EYE_RADIAL_NV, the fog distance z is computed
141     as the Euclidean distance from the center of the fragment in eye
146     In the EYE_RADIAL_NV fog distance mode, the Euclidean distance
154     distance mode, three floating-point values d, e, and s, and RGBA fog
195                                             dependent          fog distance