textureProjGradOffset — perform a texture lookup with projection, explicit gradients and offset
gvec4 textureProjGradOffset( | gsampler2D sampler, |
| vec3 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
gvec4 textureProjGradOffset( | gsampler2D sampler, |
| vec4 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
gvec4 textureProjGradOffset( | gsampler3D sampler, |
| vec4 P, | |
| vec3 dPdx, | |
| vec3 dPdy, | |
ivec3 offset); |
float textureProjGradOffset( | sampler2DShadow sampler, |
| vec4 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
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.
dPdx Specifies the partial derivative of P with respect to window x.
dPdy Specifies the partial derivative of P with respect to window y.
offset Specifies the offsets, in texels at which the texture will be sampled relative to the projection of P.
textureProjGradOffset performs a texture lookup with projection and explicit gradients and offsets. The texture coordinates consumed from P, not including the last component of P, are divided by the last component of P. The resulting component of P in the shadow forms is used as . After these values are computed, the texture lookup proceeds as in textureGradOffset, passing dPdx and dPdy as gradients, and offset as the offset.
| OpenGL ES Shading Language Version | |||
|---|---|---|---|
| Function Name | 1.00 | 3.00 | 3.10 |
| textureProjGradOffset | - | ✔ | ✔ |
texelFetch, texelFetchOffset, texture, textureGrad, textureGradOffset, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjLod, textureProjLodOffset, textureProjOffset, textureSize
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. https://opencontent.org/openpub/.