NAME

       textureProj - perform a texture lookup with projection

DECLARATION

       gvec4 textureProj(gsampler1D sampler, vec2 P, [float bias]);

       gvec4 textureProj(gsampler1D sampler, vec4 P, [float bias]);

       gvec4 textureProj(gsampler2D sampler, vec3 P, [float bias]);

       gvec4 textureProj(gsampler2D sampler, vec4 P, [float bias]);

       gvec4 textureProj(gsampler3D sampler, vec4 P, [float bias]);

       float textureProj(sampler1DShadow sampler, vec4 P, [float bias]);

       float textureProj(sampler2DShadow sampler, vec4 P, [float bias]);

       gvec4 textureProj(gsampler2DRect sampler, vec3 P);

       gvec4 textureProj(gsampler2DRect sampler, vec4 P);

       float textureProj(gsampler2DRectShadow sampler, vec4 P);

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.

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

DESCRIPTION

       textureProj 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 texture().

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                     │      │      │      │      │      │      │      │      │      │      │      │      │
       ├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │textureProj              │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       ├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │textureProj              │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │(gsampler2DRect{Shadow}) │      │      │      │      │      │      │      │      │      │      │      │      │
       └─────────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘

SEE ALSO

       texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(),
       textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(),
       textureLodOffset(), textureOffset(), textureProjGrad(), textureProjGradOffset(),
       textureProjLod(), textureProjLodOffset(), textureProjOffset(), 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]                             07/22/2015                            TEXTUREPROJ(3G)