textureGradOffset — perform a texture lookup with explicit gradients and offset
gvec4 textureGradOffset( | gsampler2D sampler, |
| vec2 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
gvec4 textureGradOffset( | gsampler3D sampler, |
| vec3 P, | |
| vec3 dPdx, | |
| vec3 dPdy, | |
ivec3 offset); |
float textureGradOffset( | sampler2DShadow sampler, |
| vec3 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
gvec4 textureGradOffset( | gsampler2DArray sampler, |
| vec3 P, | |
| vec2 dPdx, | |
| vec2 dPdy, | |
ivec2 offset); |
float textureGradOffset( | sampler2DArrayShadow 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 offset to be applied to the texture coordinates before sampling.
textureGradOffset performs a texture lookup at coordinate P from the texture bound to sampler with explicit texture coordinate gradiends as specified in dPdx and dPdy. An explicit offset is also supplied in offset. textureGradOffset consumes dPdx and dPdy as textureGrad and offset as textureOffset.
| OpenGL ES Shading Language Version | |||
|---|---|---|---|
| Function Name | 1.00 | 3.00 | 3.10 |
| textureGradOffset | - | ✔ | ✔ |
texelFetch, texelFetchOffset, texture, textureGrad, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjGradOffset, 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/.