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Sample a varying at specified offset from the center of a pixel.


float interpolateAtOffset( float interpolant, vec2 offset );
vec2 interpolateAtOffset( vec2 interpolant, vec2 offset );
vec3 interpolateAtOffset( vec3 interpolant, vec2 offset );
vec4 interpolateAtOffset( vec4 interpolant, vec2 offset );


interpolant - Specifies the interpolant to be sampled at the specified offset.
offset - Specifies the offset from the center of the pixel at which to sample interpolant .


 interpolateAtOffset returns the value of the input varying interpolant sampled at an offset from the center of the pixel specified by offset . The two floating-point components of offset give the offset in pixels in thexandydirections from the center of the pixel, respectively. An offset of (0, 0) identifies the center of the pixel. The range and granularity of offsets supported by this function is implementation-dependent.

Version Support[edit]

interpolateAtoOffset 4.0+

See Also[edit]

 interpolateAtCentroid , interpolateAtSample 


Copyright© 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.