textureSize - retrieve the dimensions of a level of a texture

       Copyright © 2011-2014 Khronos Group

[FIXME: source]                                    11/18/2024                                    TEXTURESIZE(3G)

inttextureSize(gsampler1Dsampler,intlod);ivec2textureSize(gsampler2Dsampler,intlod);ivec3textureSize(gsampler3Dsampler,intlod);ivec2textureSize(gsamplerCubesampler,intlod);inttextureSize(sampler1DShadowsampler,intlod);ivec2textureSize(sampler2DShadowsampler,intlod);ivec2textureSize(samplerCubeShadowsampler,intlod);ivec3textureSize(samplerCubeArraysampler,intlod);ivec3textureSize(samplerCubeArrayShadowsampler,intlod);ivec2textureSize(gsamplerRectsampler);ivec2textureSize(gsamplerRectShadowsampler);ivec2textureSize(gsampler1DArraysampler,intlod);ivec3textureSize(gsampler2DArraysampler,intlod);ivec2textureSize(sampler1DArrayShadowsampler,intlod);ivec3textureSize(sampler2DArrayShadowsampler,intlod);inttextureSize(gsamplerBuffersampler);ivec2textureSize(gsampler2DMSsampler);ivec3textureSize(gsampler2DMSArraysampler);

textureSize returns the dimensions of level lod (if present) of the texture bound to sampler. The
       components in the return value are filled in, in order, with the width, height and depth of the texture.
       For the array forms, the last component of the return value is the number of layers in the texture array.

       textureSize - retrieve the dimensions of a level of a texture

sampler
           Specifies the sampler to which the texture whose dimensions to retrieve is bound.

       lod
           Specifies the level of the texture for which to retrieve the dimensions.

texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(),
       textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(),
       textureOffset(), textureProj(), textureProjGrad(), textureProjGradOffset(), textureProjLod(),
       textureProjLodOffset(), textureProjOffset(), textureQueryLod()

       ┌───────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │                       │        OpenGLShadingLanguageVersion                                            │
       ├───────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │ Function              │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
       │ Name                  │      │      │      │      │      │      │      │      │      │      │      │      │
       ├───────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureSize           │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       ├───────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureSize           │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │ (samplerBuffer,       │      │      │      │      │      │      │      │      │      │      │      │      │
       │ samplerRect{Shadow})  │      │      │      │      │      │      │      │      │      │      │      │      │
       ├───────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │ textureSize           │  -   │  -   │  -   │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       │ (samplerCube{Shadow}) │      │      │      │      │      │      │      │      │      │      │      │      │
       └───────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘