TEXTUREPROJ(3G)

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 Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50
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