82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
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// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_AST_TEXTURE_H_
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#define SRC_AST_TEXTURE_H_
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#include "src/ast/type.h"
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namespace tint {
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namespace ast {
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/// The dimensionality of the texture
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enum class TextureDimension {
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/// Invalid texture
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kNone = -1,
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/// 1 dimensional texture
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k1d,
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/// 2 dimensional texture
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k2d,
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/// 2 dimensional array texture
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k2dArray,
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/// 3 dimensional texture
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k3d,
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/// cube texture
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kCube,
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/// cube array texture
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kCubeArray,
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};
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/// @param out the std::ostream to write to
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/// @param dim the TextureDimension
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/// @return the std::ostream so calls can be chained
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std::ostream& operator<<(std::ostream& out, TextureDimension dim);
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/// @param dim the TextureDimension to query
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/// @return true if the given TextureDimension is an array texture
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bool IsTextureArray(TextureDimension dim);
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/// Returns the number of axes in the coordinate for a dimensionality.
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/// None -> 0
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/// 1D -> 1
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/// 2D, 2DArray -> 2
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/// 3D, Cube, CubeArray -> 3
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/// @param dim the TextureDimension to query
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/// @return number of dimensions in a coordinate for the dimensionality
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int NumCoordinateAxes(TextureDimension dim);
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/// A texture type.
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class Texture : public Castable<Texture, Type> {
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public:
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/// Constructor
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/// @param program_id the identifier of the program that owns this node
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/// @param source the source of this node
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/// @param dim the dimensionality of the texture
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Texture(ProgramID program_id, const Source& source, TextureDimension dim);
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/// Move constructor
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Texture(Texture&&);
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~Texture() override;
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/// @returns the texture dimension
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TextureDimension dim() const { return dim_; }
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private:
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TextureDimension const dim_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_TEXTURE_H_
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