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 | 3.20 |
| textureGradOffset | - | ✔ | ✔ | ✔ |
texelFetch, texelFetchOffset, texture, textureGrad, textureLod, textureLodOffset, textureOffset, textureProj, textureProjGrad, textureProjGradOffset, textureProjLod, textureProjLodOffset, textureProjOffset, textureSize
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