1 // Copyright 2020 The Tint Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SRC_AST_TYPE_TEXTURE_TYPE_H_ 16 #define SRC_AST_TYPE_TEXTURE_TYPE_H_ 17 18 #include <ostream> 19 #include <string> 20 21 #include "src/ast/type/type.h" 22 23 namespace tint { 24 namespace ast { 25 namespace type { 26 27 class DepthTextureType; 28 class MultisampledTextureType; 29 class SampledTextureType; 30 class StorageTextureType; 31 32 /// The dimensionality of the texture 33 enum class TextureDimension { 34 /// Invalid texture 35 kNone = -1, 36 /// 1 dimensional texture 37 k1d, 38 /// 1 dimenstional array texture 39 k1dArray, 40 /// 2 dimensional texture 41 k2d, 42 /// 2 dimensional array texture 43 k2dArray, 44 /// 3 dimensional texture 45 k3d, 46 /// cube texture 47 kCube, 48 /// cube array texture 49 kCubeArray, 50 }; 51 std::ostream& operator<<(std::ostream& out, TextureDimension dim); 52 53 /// A texture type. 54 class TextureType : public Type { 55 public: 56 /// Constructor 57 /// @param dim the dimensionality of the texture 58 explicit TextureType(TextureDimension dim); 59 /// Move constructor 60 TextureType(TextureType&&); 61 ~TextureType() override; 62 63 /// @returns true if the type is a texture type 64 bool IsTexture() const override; 65 66 /// @returns the texture dimension dim()67 TextureDimension dim() const { return dim_; } 68 69 /// @returns true if this is a depth texture 70 virtual bool IsDepth() const; 71 /// @returns ture if this is a multisampled texture 72 virtual bool IsMultisampled() const; 73 /// @returns true if this is a storage texture 74 virtual bool IsStorage() const; 75 /// @returns true if this is a sampled texture 76 virtual bool IsSampled() const; 77 78 /// @returns the texture as a depth texture 79 const DepthTextureType* AsDepth() const; 80 /// @returns the texture as a multisampled texture 81 const MultisampledTextureType* AsMultisampled() const; 82 /// @returns the texture as a sampled texture 83 const SampledTextureType* AsSampled() const; 84 /// @returns the texture as a storage texture 85 const StorageTextureType* AsStorage() const; 86 87 /// @returns the texture as a depth texture 88 DepthTextureType* AsDepth(); 89 /// @returns the texture as a multisampled texture 90 MultisampledTextureType* AsMultisampled(); 91 /// @returns the texture as a sampled texture 92 SampledTextureType* AsSampled(); 93 /// @returns the texture as a storage texture 94 StorageTextureType* AsStorage(); 95 96 private: 97 TextureDimension dim_ = TextureDimension::k1d; 98 }; 99 100 } // namespace type 101 } // namespace ast 102 } // namespace tint 103 104 #endif // SRC_AST_TYPE_TEXTURE_TYPE_H_ 105