Name

textureProj — perform a texture lookup with projection

Declaration

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

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 ES Shading Language Version
Function Name 1.00 3.00
textureProjOffset-✔

See Also

texelFetch, texelFetchOffset, texture, textureGrad, textureGradOffset, textureLod, textureLodOffset, textureOffset, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjLodOffset, textureProjOffset, textureSize

Copyright

Copyright © 2011-2013 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.