1 #ifndef DALI_FRAMEBUFFER_H
2 #define DALI_FRAMEBUFFER_H
5 * Copyright (c) 2020 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 <cstdint> // uint32_t
25 #include <dali/public-api/object/base-handle.h>
26 #include <dali/public-api/rendering/texture.h>
31 * @addtogroup dali_core_rendering_effects
35 namespace Internal DALI_INTERNAL
41 * @brief FrameBuffer is a collection of textures that can be used as the destination for rendering.
44 class DALI_CORE_API FrameBuffer : public BaseHandle
48 * @brief The initial attachments to create the FrameBuffer with.
49 * @note The color attachment can also be created on calling AttachColorTexture().
50 * @note With "NONE", no attachments are created initially. However color attachments can still be added as described above.
57 * @brief Enumeration for the attachments and/or textures to be created by default
62 NONE = 0, ///< No attachments are created initially. @SINCE_1_1.45
63 DEPTH = 1 << 0, ///< Depth buffer is created. @SINCE_1_1.45
64 STENCIL = 1 << 1, ///< Stencil buffer is created. @SINCE_1_1.45
65 DEPTH_STENCIL = DEPTH | STENCIL, ///< Depth and stencil buffer are created. @SINCE_1_1.45
66 COLOR = 1 << 2, ///< Color texture is created. @SINCE_1_4.0
67 COLOR_DEPTH = COLOR | DEPTH, ///< Color texture and depth buffer are created. @SINCE_1_4.0
68 COLOR_STENCIL = COLOR | STENCIL, ///< Color texture and stencil buffer are created. @SINCE_1_4.0
69 COLOR_DEPTH_STENCIL = COLOR_DEPTH | STENCIL ///< Color, depth and stencil buffer are created. @SINCE_1_4.0
74 * @brief Creates a new FrameBuffer, which attaches only COLOR texture.
78 * @note Call GetColorTexture() to get the COLOR texture
80 * @param[in] width The width of the FrameBuffer and the color texture
81 * @param[in] height The height of the FrameBuffer and the color texture
82 * @return A handle to a newly allocated FrameBuffer
84 static FrameBuffer New(uint32_t width, uint32_t height);
87 * @brief Creates a new FrameBuffer with specific attachments.
91 * @param[in] width The width of the FrameBuffer and the attachments
92 * @param[in] height The height of the FrameBuffer and the attachments
93 * @param[in] attachments Enumeration of the attachments to create
94 * @return A handle to a newly allocated FrameBuffer
96 static FrameBuffer New(uint32_t width, uint32_t height, Attachment::Mask attachments);
99 * @brief Default constructor, creates an empty handle.
110 * @brief Copy constructor, creates a new handle to the same object.
113 * @param[in] handle Handle to an object
115 FrameBuffer(const FrameBuffer& handle);
118 * @brief Downcasts to a FrameBuffer.
119 * If not, the returned handle is left uninitialized.
121 * @param[in] handle Handle to an object
122 * @return FrameBuffer handle or an uninitialized handle
124 static FrameBuffer DownCast(BaseHandle handle);
127 * @brief Assignment operator, changes this handle to point at the same object.
130 * @param[in] handle Handle to an object
131 * @return Reference to the assigned object
133 FrameBuffer& operator=(const FrameBuffer& handle);
136 * @brief Move constructor.
139 * @param[in] rhs A reference to the moved handle
141 FrameBuffer(FrameBuffer&& rhs) noexcept;
144 * @brief Move assignment operator.
147 * @param[in] rhs A reference to the moved handle
148 * @return A reference to this handle
150 FrameBuffer& operator=(FrameBuffer&& rhs) noexcept;
153 * @brief Attach the base LOD of a 2D texture to the framebuffer for color rendering.
154 * @note This causes a color attachment to be added.
155 * @note Repeated calls to this method add textures as subsequent color attachments.
156 * @note A maximum of 8 color attachments are supported.
159 * @param[in] texture The texture that will be used as output when rendering
160 * @note The texture has to have same size as that of FrameBuffer
161 * otherwise it won't be attached.
163 void AttachColorTexture(Texture& texture);
166 * @brief Attach a texture to the framebuffer for color rendering.
167 * @note This causes a color attachment to be added.
168 * @note Repeated calls to this method add textures as subsequent color attachments.
169 * @note A maximum of 8 color attachments are supported.
172 * @param[in] texture The texture that will be used as output when rendering
173 * @param[in] mipmapLevel The mipmap of the texture to be attached
174 * @param[in] layer Indicates which layer of a cube map or array texture to attach. Unused for 2D textures
175 * @note The mipmapped texture has to have same size as that of FrameBuffer
176 * otherwise it won't be attached.
178 void AttachColorTexture(Texture& texture, uint32_t mipmapLevel, uint32_t layer);
181 * @brief Gets the first color texture used as output in the FrameBuffer.
184 * @returns A handle to the texture used as color output, or an uninitialized handle
186 Texture GetColorTexture();
190 * @brief The constructor.
191 * @note Not intended for application developers.
193 * @param[in] pointer A pointer to a newly allocated FrameBuffer
195 explicit DALI_INTERNAL FrameBuffer(Internal::FrameBuffer* pointer);
203 #endif // DALI_FRAMEBUFFER_H