table of contents
TEXTUREPROJGRAD(3G) | [FIXME: manual] | TEXTUREPROJGRAD(3G) |
NAME¶
textureProjGrad - perform a texture lookup with projection and explicit gradientsDECLARATION¶
gvec4
textureProjGrad(gsampler1D sampler,
vec2 P, float pDx,
float pDy);
gvec4
textureProjGrad(gsampler1D sampler,
vec4 P, float pDx,
float pDy);
gvec4
textureProjGrad(gsampler2D sampler,
vec3 P, vec2 pDx,
vec2 pDy);
gvec4
textureProjGrad(gsampler2D sampler,
vec4 P, vec2 pDx,
vec2 pDy);
gvec4
textureProjGrad(gsampler3D sampler,
vec4 P, vec3 pDx,
vec3 pDy);
float
textureProjGrad(sampler1DShadow sampler,
vec4 P, float pDx,
float pDy);
float
textureProjGrad(sampler2DShadow sampler,
vec4 P, vec2 pDx,
vec2 pDy);
gvec4
textureProjGrad(gsampler2DRect sampler,
vec3 P, vec2 pDx,
vec2 pDy);
gvec4
textureProjGrad(gsampler2DRect sampler,
vec4 P, vec2 pDx,
vec2 pDy);
float
textureProjGrad(gsampler2DRectShadow sampler,
vec4 P, vec2 pDx,
vec2 pDy);
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.
DESCRIPTION¶
textureProjGrad performs a texture lookup with projection and explicit gradients. 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 textureGrad(), passing dPdx and dPdy as gradients.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 |
textureProjGrad | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
textureProjGrad (gsampler2DRect{Shadow}) | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSO¶
texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(), textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(), textureOffset(), textureProj(), 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] |