textureProjGradOffset - perform a texture lookup with projection, explicit gradients and offset

       Copyright © 2011-2014 Khronos Group

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

gvec4textureProjGradOffset(gsampler1Dsampler,vec2P,floatdPdx,floatdPdy,intoffset);gvec4textureProjGradOffset(gsampler1Dsampler,vec4P,floatdPdx,floatdPdy,intoffset);gvec4textureProjGradOffset(gsampler2Dsampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureProjGradOffset(gsampler2Dsampler,vec4P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureProjGradOffset(gsampler3Dsampler,vec4P,vec3dPdx,vec3dPdy,ivec3offset);floattextureProjGradOffset(sampler1DShadowsampler,vec4P,floatdPdx,floatdPdy,intoffset);floattextureProjGradOffset(sampler2DShadowsampler,vec4P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureProjGradOffset(gsampler2DRectsampler,vec3P,vec2dPdx,vec2dPdy,ivec2offset);gvec4textureProjGradOffset(gsampler2DRectsampler,vec4P,vec2dPdx,vec2dPdy,ivec2offset);floattextureProjGradOffset(gsampler2DRectShadowsampler,vec4P,vec2dPdx,vec2dPdy,ivec2offset);

textureProjGradOffset performs a texture lookup with projection and explicit gradients and offsets. The
       texture coordinates consumed from P, not including the last component of P, are divided by the last
       component of P. The resulting 3rd component of P in the shadow forms is used as Dref. After these values
       are computed, the texture lookup proceeds as in textureGradOffset(), passing dPdx and dPdy as gradients,
       and offset as the offset.

       textureProjGradOffset - perform a texture lookup with projection, 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 offsets, in texels at which the texture will be sampled relative to the projection of
           P.

texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(),
       textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(),
       textureOffset(), textureProj(), textureProjGrad(), 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                     │      │      │      │      │      │      │      │      │      │      │      │      │
       ├──────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureProjGradOffset    │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       ├──────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureProjGradOffset    │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │ (gsampler2DRect{Shadow}) │      │      │      │      │      │      │      │      │      │      │      │      │
       └──────────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘