1 #ifndef DALI_INTERNAL_RENDER_TEXTURE_H
2 #define DALI_INTERNAL_RENDER_TEXTURE_H
5 * Copyright (c) 2016 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.
24 #include <dali/public-api/rendering/sampler.h>
25 #include <dali/public-api/rendering/texture.h>
26 #include <dali/internal/event/rendering/texture-impl.h>
27 #include <dali/internal/render/gl-resources/context.h>
28 #include <dali/internal/render/renderers/render-sampler.h>
29 #include <dali/integration-api/gl-defines.h>
30 #include <dali/integration-api/resource-declarations.h>
41 * This class is the mapping between texture id, sampler and sampler uniform name
52 mTextureId( Integration::InvalidResourceId )
58 Texture( Integration::ResourceId textureId, Render::Sampler* sampler )
59 : mSampler( sampler ),
60 mTextureId( textureId)
70 * Get the Render::Sampler used by the texture
71 * @Return The Render::Sampler being used or 0 if using the default
73 inline const Render::Sampler* GetSampler() const
78 public: // called from RenderThread
82 * @return the id of the associated texture
84 inline Integration::ResourceId GetTextureId() const
91 Render::Sampler* mSampler;
92 Integration::ResourceId mTextureId;
96 //TODO : Remove the old Render::Texture class (see above) once it is no longer needed by Image
101 typedef Dali::TextureType::Type Type;
105 * @param[in] type The type of the texture
106 * @param[in] format The format of the pixel data
107 * @param[in] width The width of the texture
108 * @param[in] height The height of the texture
110 NewTexture( Type type, Pixel::Format format, unsigned int width, unsigned int height );
113 * Constructor from native image
114 * @param[in] nativeImageInterface The native image
116 NewTexture( NativeImageInterfacePtr nativeImageInterface );
124 * Creates the texture in the GPU.
125 * Creates the texture and reserves memory for the first mipmap level
126 * @param[in] context The GL context
128 void Initialize(Context& context);
131 * Deletes the texture from the GPU
132 * @param[in] context The GL context
134 void Destroy( Context& context );
137 * Called by RenderManager to inform the texture that the context has been destroyed
139 void GlContextDestroyed();
142 * Uploads data to the texture.
143 * @param[in] context The GL context
144 * @param[in] pixelData A pixel data object
145 * @param[in] params Upload parameters. See UploadParams
147 void Upload( Context& context, PixelDataPtr pixelData, const Internal::NewTexture::UploadParams& params );
150 * Bind the texture to the given texture unit and applies the given sampler
151 * @param[in] context The GL context
152 * @param[in] textureUnit the texture unit
153 * @param[in] sampler The sampler to be used with the texture
154 * @return true if the bind succeeded, false otherwise
156 bool Bind( Context& context, unsigned int textureUnit, Render::Sampler* sampler );
159 * Auto generates mipmaps for the texture
160 * @param[in] context The GL context
162 void GenerateMipmaps( Context& context );
165 * Retrieve wheter the texture has an alpha channel
166 * @return True if the texture has alpha channel, false otherwise
168 bool HasAlphaChannel();
171 * Get the id of the texture
172 * @return Id of the texture
180 * Get the width of the texture
181 * @return Width of the texture
183 unsigned int GetWidth() const
189 * Get the height of the texture
190 * @return Height of the texture
192 unsigned int GetHeight() const
198 * Get the type of the texture
199 * @return Type of the texture
209 * Helper method to apply a sampler to the texture
210 * @param[in] context The GL context
211 * @param[in] sampler The sampler
213 void ApplySampler( Context& context, Render::Sampler* sampler );
215 GLuint mId; ///< Id of the texture
216 GLuint mTarget; ///< Specifies the target to which the texture is bound.
217 Type mType; ///< Type of the texture
218 Render::Sampler mSampler; ///< The current sampler state
219 NativeImageInterfacePtr mNativeImage; ///< Pointer to native image
220 GLenum mInternalFormat; ///< The format of the pixel data
221 GLenum mPixelDataType; ///< The data type of the pixel data
222 unsigned int mWidth; ///< Widht of the texture
223 unsigned int mHeight; ///< Height of the texture
224 bool mHasAlpha : 1; ///< Whether the format has an alpha channel
225 bool mIsCompressed : 1; ///< Whether the format is compressed
229 } // namespace Render
231 } // namespace Internal
236 #endif // DALI_INTERNAL_RENDER_TEXTURE_H