textureProj - perform a texture lookup with projection

       Copyright © 2011-2014 Khronos Group

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

gvec4textureProj(gsampler1Dsampler,vec2P,[floatbias]);gvec4textureProj(gsampler1Dsampler,vec4P,[floatbias]);gvec4textureProj(gsampler2Dsampler,vec3P,[floatbias]);gvec4textureProj(gsampler2Dsampler,vec4P,[floatbias]);gvec4textureProj(gsampler3Dsampler,vec4P,[floatbias]);floattextureProj(sampler1DShadowsampler,vec4P,[floatbias]);floattextureProj(sampler2DShadowsampler,vec4P,[floatbias]);gvec4textureProj(gsampler2DRectsampler,vec3P);gvec4textureProj(gsampler2DRectsampler,vec4P);floattextureProj(gsampler2DRectShadowsampler,vec4P);

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().

       textureProj - perform a texture lookup with projection

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.

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