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TEXTUREGATHER(3G) | [FIXME: manual] | TEXTUREGATHER(3G) |
NAME¶
textureGather - gathers four texels from a textureDECLARATION¶
gvec4 textureGather(gsampler2D sampler,
vec2 P, [int comp]);
gvec4
textureGather(gsampler2DArray sampler,
vec3 P, [int comp]);
gvec4
textureGather(gsamplerCube sampler,
vec3 P, [int comp]);
gvec4
textureGather(gsamplerCubeArray sampler,
vec4 P, [int comp]);
gvec4
textureGather(gsampler2DRect sampler,
vec3 P, [int comp]);
vec4
textureGather(gsampler2DShadow sampler,
vec2 P, float refZ);
vec4
textureGather(gsampler2DArrayShadow sampler,
vec3 P, float refZ);
vec4
textureGather(gsamplerCubeShadow sampler,
vec3 P, float refZ);
vec4
textureGather(gsamplerCubeArrayShadow sampler,
vec4 P, float refZ);
vec4
textureGather(gsampler2DRectShadow sampler,
vec3 P, float refZ);
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.
comp
Specifies the component of the source texture that will
be used to generate the resulting vector.
refZ
Specifies the reference Z value used in the comparison
for shadow forms.
DESCRIPTION¶
textureGather returns the value:vec4(Sample_i0_j1(P, base).comp, Sample_i1_j1(P, base).comp, Sample_i1_j0(P, base).comp, Sample_i0_j1(P, base).comp);
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 |
textureGather | - | - | - | - | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSO¶
texelFetch(), texelFetchOffset(), texture(), textureGatherOffset(), textureGatherOffsets(), textureGrad(), textureGradOffset(), 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] |