NAME

       textureProjOffset - perform a texture lookup with projection and offset

DECLARATION

       gvec4 textureProjOffset(gsampler1D sampler, vec2 P, int offset, [float bias]);

       gvec4 textureProjOffset(gsampler1D sampler, vec4 P, int offset, [float bias]);

       gvec4 textureProjOffset(gsampler2D sampler, vec3 P, ivec2 offset, [float bias]);

       gvec4 textureProjOffset(gsampler2D sampler, vec4 P, ivec2 offset, [float bias]);

       gvec4 textureProjOffset(gsampler3D sampler, vec4 P, ivec3 offset, [float bias]);

       float textureProjOffset(sampler1DShadow sampler, vec4 P, int offset, [float bias]);

       float textureProjOffset(sampler2DShadow sampler, vec4 P, ivec2 offset, [float bias]);

       gvec4 textureProjOffset(gsampler2DRect sampler, vec3 P, ivec2 offset);

       gvec4 textureProjOffset(gsampler2DRect sampler, vec4 P, ivec2 offset);

       float textureProjOffset(gsampler2DRectShadow sampler, vec4 P, 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 the texture will be sampled.

       offset
           Specifies the offset that is applied to P before sampling occurs.

       bias
           Specifies an optional bias to be applied during level-of-detail computation.

DESCRIPTION

       textureProjOffset performs a texture lookup with projection. 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 textureOffset(), with the offset
       used to offset the computed texture coordinates.

VERSION SUPPORT

       ┌─────────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │                         │        OpenGL Shading Language Version                                            │
       ├─────────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │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                     │      │      │      │      │      │      │      │      │      │      │      │      │
       ├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │textureProjOffset        │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       ├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │textureProjOffset        │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │(gsampler2DRect{Shadow}) │      │      │      │      │      │      │      │      │      │      │      │      │
       └─────────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘

SEE ALSO

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

COPYRIGHT

       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.
       http://opencontent.org/openpub/.

COPYRIGHT

       Copyright © 2011-2014 Khronos Group

[FIXME: source]                             01/03/2018                      TEXTUREPROJOFFSET(3G)