table of contents
TEXTUREGRADOFFSET(3G) | [FIXME: manual] | TEXTUREGRADOFFSET(3G) |
NAME¶
textureGradOffset - perform a texture lookup with explicit gradients and offsetDECLARATION¶
gvec4
textureGradOffset(gsampler1D sampler,
float P, float dPdx,
float dPdy, int 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);
gvec4
textureGradOffset(gsampler2DRect sampler,
vec2 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
float
textureGradOffset(gsampler2DRectShadow sampler,
vec3 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
float
textureGradOffset(sampler1DShadow sampler,
vec3 P, float dPdx,
float dPdy, int offset);
float
textureGradOffset(sampler2DShadow sampler,
vec3 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
gvec4
textureGradOffset(gsampler1DArray sampler,
vec2 P, float dPdx,
float dPdy, int offset);
gvec4
textureGradOffset(gsampler2DArray sampler,
vec3 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
float
textureGradOffset(sampler1DArrayShadow sampler,
vec3 P, float dPdx,
float dPdy, int offset);
float
textureGradOffset(sampler2DArrayShadow sampler,
vec3 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
PARAMETERS¶
samplerSpecifies 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.
DESCRIPTION¶
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().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 |
textureGradOffset | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
textureGradOffset (gsampler2DRect{Shadow}) | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSO¶
texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(), textureGatherOffsets(), textureGrad(), textureLod(), textureLodOffset(), textureOffset(), textureProj(), 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 Group08/26/2014 | [FIXME: source] |