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Clarify NumCoordinateAxes

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Change-Id: Ie8a4e31c7f0440e3285827d0a592427a8be3ba0d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/51804
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
This commit is contained in:
David Neto 2021-05-21 20:25:53 +00:00 committed by Tint LUCI CQ
parent e92a1ae4ac
commit 8fb6402c98
1 changed files with 6 additions and 1 deletions
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7
src/ast/texture.h
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@ -47,11 +47,16 @@ std::ostream& operator<<(std::ostream& out, TextureDimension dim);
/// @return true if the given TextureDimension is an array texture /// @return true if the given TextureDimension is an array texture
bool IsTextureArray(TextureDimension dim); bool IsTextureArray(TextureDimension dim);
/// Returns the number of axes in the coordinate for a dimensionality. /// Returns the number of axes in the coordinate used for accessing
/// the texture, where an access is one of: sampling, fetching, load,
/// or store.
/// None -> 0 /// None -> 0
/// 1D -> 1 /// 1D -> 1
/// 2D, 2DArray -> 2 /// 2D, 2DArray -> 2
/// 3D, Cube, CubeArray -> 3 /// 3D, Cube, CubeArray -> 3
/// Note: To sample a cube texture, the coordinate has 3 dimensions,
/// but textureDimensions on a cube or cube array returns a 2-element
/// size, representing the (x,y) size of each cube face, in texels.
/// @param dim the TextureDimension to query /// @param dim the TextureDimension to query
/// @return number of dimensions in a coordinate for the dimensionality /// @return number of dimensions in a coordinate for the dimensionality
int NumCoordinateAxes(TextureDimension dim); int NumCoordinateAxes(TextureDimension dim);