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 * Uploads data to the texture.
138 * @param[in] context The GL context
139 * @param[in] pixelData A pixel data object
140 * @param[in] params Upload parameters. See UploadParams
142 void Upload( Context& context, PixelDataPtr pixelData, const Internal::NewTexture::UploadParams& params );
145 * Bind the texture to the given texture unit and applies the given sampler
146 * @param[in] context The GL context
147 * @param[in] textureUnit the texture unit
148 * @param[in] sampler The sampler to be used with the texture
149 * @return true if the bind succeeded, false otherwise
151 bool Bind( Context& context, unsigned int textureUnit, Render::Sampler* sampler );
154 * Auto generates mipmaps for the texture
155 * @param[in] context The GL context
157 void GenerateMipmaps( Context& context );
160 * Retrieve wheter the texture has an alpha channel
161 * @return True if the texture has alpha channel, false otherwise
163 bool HasAlphaChannel();
166 * Get the id of the texture
167 * @return Id of the texture
175 * Get the width of the texture
176 * @return Width of the texture
178 unsigned int GetWidth() const
184 * Get the height of the texture
185 * @return Height of the texture
187 unsigned int GetHeight() const
193 * Get the type of the texture
194 * @return Type of the texture
204 * Helper method to apply a sampler to the texture
205 * @param[in] context The GL context
206 * @param[in] sampler The sampler
208 void ApplySampler( Context& context, Render::Sampler* sampler );
210 GLuint mId; ///<Id of the texture
211 Type mType; ///<Type of the texture
212 Render::Sampler mSampler; ///<The current sampler state
213 NativeImageInterfacePtr mNativeImage; ///<Pointer to native image
214 GLenum mInternalFormat; ///<The format of the pixel data
215 GLenum mPixelDataType; ///<The data type of the pixel data
216 unsigned int mWidth; ///<Widht of the texture
217 unsigned int mHeight; ///<Height of the texture
218 bool mHasAlpha : 1; ///<Whether the format has an alpha channel
219 bool mIsCompressed : 1; ///<Whether the format is compressed
223 } // namespace Render
225 } // namespace Internal
230 #endif // DALI_INTERNAL_RENDER_TEXTURE_H