5 * Copyright (c) 2018 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/object/base-handle.h>
23 #include <dali/public-api/images/native-image-interface.h>
24 #include <dali/public-api/images/pixel.h>
25 #include <dali/public-api/images/pixel-data.h>
30 namespace Internal DALI_INTERNAL
39 * @brief Enumeration for texture types.
44 TEXTURE_2D, ///< One 2D image @SINCE_1_1.43
45 TEXTURE_CUBE ///< Six 2D images arranged in a cube-shape @SINCE_1_1.43
48 } // namespace TextureType
50 namespace CubeMapLayer
54 * @brief Faces of a cube map.
55 * These constants should be used as the "layer" parameter when uploading a cube-map with Texture::Upload.
58 const uint32_t POSITIVE_X = 0u; ///< CubeMap image for +x @SINCE_1_1.43
59 const uint32_t NEGATIVE_X = 1u; ///< CubeMap image for -x @SINCE_1_1.43
60 const uint32_t POSITIVE_Y = 2u; ///< CubeMap image for +y @SINCE_1_1.43
61 const uint32_t NEGATIVE_Y = 3u; ///< CubeMap image for -y @SINCE_1_1.43
62 const uint32_t POSITIVE_Z = 4u; ///< CubeMap image for +z @SINCE_1_1.43
63 const uint32_t NEGATIVE_Z = 5u; ///< CubeMap image for -z @SINCE_1_1.43
65 } // namespace CubeMapLayer
69 * @brief Texture represents a texture object used as input or output by shaders.
72 class DALI_CORE_API Texture : public BaseHandle
77 * @brief Creates a new Texture object.
80 * @param[in] type The type of the texture
81 * @param[in] format The format of the pixel data
82 * @param[in] width The width of the texture
83 * @param[in] height The height of the texture
84 * @return A handle to a newly allocated Texture
86 static Texture New( TextureType::Type type, Pixel::Format format, uint32_t width, uint32_t height );
89 * @brief Creates a new Texture object from a native image.
92 * @param[in] nativeImageInterface A native image
93 * @return A handle to a newly allocated Texture
94 * @note It is not possible to upload data to textures created from a native image using Upload methods
95 * although there might be platform specific APIs to upload data to a native image.
97 static Texture New( NativeImageInterface& nativeImageInterface );
100 * @brief Default constructor, creates an empty handle.
114 * @brief Copy constructor, creates a new handle to the same object.
117 * @param[in] handle Handle to an object
119 Texture( const Texture& handle );
122 * @brief Downcasts to a texture.
123 * If not, the returned handle is left uninitialized.
126 * @param[in] handle Handle to an object
127 * @return Texture handle or an uninitialized handle
129 static Texture DownCast( BaseHandle handle );
132 * @brief Assignment operator, changes this handle to point at the same object.
135 * @param[in] handle Handle to an object
136 * @return Reference to the assigned object
138 Texture& operator=( const Texture& handle );
141 * @brief Uploads data to the texture from a PixelData object.
144 * @param[in] pixelData The pixelData object
145 * @return True if the PixelData object has compatible pixel format and fits within the texture, false otherwise
147 bool Upload( PixelData pixelData );
150 * @brief Uploads data to the texture from a PixelData object.
151 * @note Upload does not upsample or downsample pixel data to fit the specified rectangular area in the texture.
154 * @param[in] pixelData The pixelData object
155 * @param[in] layer Specifies the layer of a cube map or array texture (Unused for 2D textures). @see CubeMapLayer
156 * @param[in] mipmap Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image
157 * @param[in] xOffset Specifies an horizontal offset of the rectangular area in the texture that will be updated
158 * @param[in] yOffset Specifies a vertical offset of the rectangular area in the texture that will be updated
159 * @param[in] width Specifies the width of the rectangular area in the texture that will be updated
160 * @param[in] height Specifies the height of the rectangular area in the texture that will be updated
161 * @return True if the PixelData object has compatible pixel format and fits in the rectangle specified, false otherwise
163 bool Upload( PixelData pixelData,
164 uint32_t layer, uint32_t mipmap,
165 uint32_t xOffset, uint32_t yOffset,
166 uint32_t width, uint32_t height );
169 * @brief Generates mipmaps for the texture.
170 * This will auto generate all the mipmaps for the texture based on the data in the base level.
174 void GenerateMipmaps();
177 * @brief Returns the width of the texture.
180 * @return The width, in pixels, of the texture
182 uint32_t GetWidth() const;
185 * @brief Returns the height of the texture.
188 * @return The height, in pixels, of the texture
190 uint32_t GetHeight() const;
195 * @brief The constructor.
196 * @note Not intended for application developers.
198 * @param[in] pointer A pointer to a newly allocated Texture
200 explicit DALI_INTERNAL Texture( Internal::Texture* pointer );
205 #endif // DALI_TEXTURE_H