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]                                    11/18/2024                                    TEXTUREPROJ(3G)