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TEXTUREPROJGRADOFFSE(3G) | [FIXME: manual] | TEXTUREPROJGRADOFFSE(3G) |
NAME¶
textureProjGradOffset - perform a texture lookup with projection, explicit gradients and offsetDECLARATION¶
gvec4
textureProjGradOffset(gsampler1D sampler,
vec2 P, float dPdx,
float dPdy, int offset);
gvec4
textureProjGradOffset(gsampler1D sampler,
vec4 P, float dPdx,
float dPdy, int 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(sampler1DShadow sampler,
vec4 P, float dPdx,
float dPdy, int offset);
float
textureProjGradOffset(sampler2DShadow sampler,
vec4 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
gvec4
textureProjGradOffset(gsampler2DRect sampler,
vec3 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
gvec4
textureProjGradOffset(gsampler2DRect sampler,
vec4 P, vec2 dPdx,
vec2 dPdy, ivec2 offset);
float
textureProjGradOffset(gsampler2DRectShadow sampler,
vec4 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 offsets, in texels at which the texture
will be sampled relative to the projection of P.
DESCRIPTION¶
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 3rd component of P in the shadow forms is used as Dref. After these values are computed, the texture lookup proceeds as in textureGradOffset(), passing dPdx and dPdy as gradients, and offset as the offset.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 |
textureProjGradOffset | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
textureProjGradOffset (gsampler2DRect{Shadow}) | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSO¶
texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(), textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(), textureOffset(), textureProj(), textureProjGrad(), 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] |