textureGradOffset - perform a texture lookup with explicit gradients and offset

       Copyright © 2011-2014 Khronos Group

[FIXME: source]                                    11/18/2024                              TEXTUREGRADOFFSET(3G)

gvec4textureGradOffset(gsampler1Dsampler,floatP,floatdPdx,floatdPdy,intoffset);gvec4textureGradOffset(gsampler2Dsampler,vec2P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureGradOffset(gsampler3Dsampler,vec3P,vec3dPdx,vec3dPdy,ivec3offset);gvec4textureGradOffset(gsampler2DRectsampler,vec2P,vec2dPdx,vec2dPdy,ivec2offset);floattextureGradOffset(gsampler2DRectShadowsampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);floattextureGradOffset(sampler1DShadowsampler,vec3P,floatdPdx,floatdPdy,intoffset);floattextureGradOffset(sampler2DShadowsampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureGradOffset(gsampler1DArraysampler,vec2P,floatdPdx,floatdPdy,intoffset);gvec4textureGradOffset(gsampler2DArraysampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);floattextureGradOffset(sampler1DArrayShadowsampler,vec3P,floatdPdx,floatdPdy,intoffset);floattextureGradOffset(sampler2DArrayShadowsampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);

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().

       textureGradOffset - perform a texture lookup with explicit gradients and offset

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.

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

       ┌──────────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │                          │        OpenGLShadingLanguageVersion                                            │
       ├──────────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │ Function                 │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
       │ Name                     │      │      │      │      │      │      │      │      │      │      │      │      │
       ├──────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureGradOffset        │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       ├──────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureGradOffset        │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │ (gsampler2DRect{Shadow}) │      │      │      │      │      │      │      │      │      │      │      │      │
       └──────────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘