Name

textureGradOffset — perform a texture lookup with explicit gradients and offset

Declaration

gvec4 textureGradOffset(gsampler1D  sampler,
 float  P,
 float  dPdx,
 float  dPdy,
 int  offset);
gvec4 textureGradOffset(gsampler2D  sampler,
 vec2  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);
gvec4 textureGradOffset(gsampler3D  sampler,
 vec3  P,
 vec3  dPdx,
 vec3  dPdy,
 ivec3  offset);
gvec4 textureGradOffset(gsampler2DRect  sampler,
 vec2  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);
float textureGradOffset(gsampler2DRectShadow  sampler,
 vec3  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);
float textureGradOffset(sampler1DShadow  sampler,
 vec3  P,
 float  dPdx,
 float  dPdy,
 int  offset);
float textureGradOffset(sampler2DShadow  sampler,
 vec3  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);
gvec4 textureGradOffset(gsampler1DArray  sampler,
 vec2  P,
 float  dPdx,
 float  dPdy,
 int  offset);
gvec4 textureGradOffset(gsampler2DArray  sampler,
 vec3  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);
float textureGradOffset(sampler1DArrayShadow  sampler,
 vec3  P,
 float  dPdx,
 float  dPdy,
 int  offset);
float textureGradOffset(sampler2DArrayShadow  sampler,
 vec3  P,
 vec2  dPdx,
 vec2  dPdy,
 ivec2  offset);

Parameters

sampler

Specifies the sampler to which the texture from which texels will be retrieved is bound.

P

Specifies the texture coordinates at which texture will be sampled.

dPdx

Specifies the partial derivative of P with respect to window x.

dPdy

Specifies the partial derivative of P with respect to window y.

offset

Specifies the offset to be applied to the texture coordinates before sampling.

Description

textureGradOffset performs a texture lookup at coordinate P from the texture bound to sampler with explicit texture coordinate gradiends as specified in dPdx and dPdy. An explicit offset is also supplied in offset. textureGradOffset consumes dPdx and dPdy as textureGrad and offset as textureOffset.

Version Support

FunctionVersion 1.10Version 1.20Version 1.30Version 1.40Version 1.50Version 3.30Version 4.00Version 4.10Version 4.20Version 4.30
textureGradOffset--YYYYYYYY
textureGradOffset (gsampler2DRect{Shadow})---YYYYYYY

See Also

texelFetch, texelFetchOffset, texture, textureGather, textureGatherOffset, textureGatherOffsets, textureGrad, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjLodOffset, textureProjOffset, textureQueryLod, textureSize

Copyright

Copyright © 2011 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. http://opencontent.org/openpub/.