| // Copyright 2020 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SRC_TINT_AST_TEXTURE_H_ |
| #define SRC_TINT_AST_TEXTURE_H_ |
| |
| #include "src/tint/ast/type.h" |
| #include "src/tint/type/texture_dimension.h" |
| |
| namespace tint::ast { |
| |
| /// @param dim the type::TextureDimension to query |
| /// @return true if the given type::TextureDimension is an array texture |
| bool IsTextureArray(type::TextureDimension dim); |
| |
| /// 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 |
| /// 1D -> 1 |
| /// 2D, 2DArray -> 2 |
| /// 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 type::TextureDimension to query |
| /// @return number of dimensions in a coordinate for the dimensionality |
| int NumCoordinateAxes(type::TextureDimension dim); |
| |
| /// A texture type. |
| class Texture : public Castable<Texture, Type> { |
| public: |
| /// Constructor |
| /// @param pid the identifier of the program that owns this node |
| /// @param nid the unique node identifier |
| /// @param src the source of this node |
| /// @param dim the dimensionality of the texture |
| Texture(ProgramID pid, NodeID nid, const Source& src, type::TextureDimension dim); |
| /// Move constructor |
| Texture(Texture&&); |
| ~Texture() override; |
| |
| /// The texture dimension |
| const type::TextureDimension dim; |
| }; |
| |
| } // namespace tint::ast |
| |
| #endif // SRC_TINT_AST_TEXTURE_H_ |