1 #ifndef DALI_INTERNAL_RENDER_TEXTURE_H
2 #define DALI_INTERNAL_RENDER_TEXTURE_H
5 * Copyright (c) 2017 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>
43 typedef Dali::TextureType::Type Type;
47 * @param[in] type The type of the texture
48 * @param[in] format The format of the pixel data
49 * @param[in] size The size of the texture
51 Texture( Type type, Pixel::Format format, ImageDimensions size );
54 * Constructor from native image
55 * @param[in] nativeImageInterface The native image
57 Texture( NativeImageInterfacePtr nativeImageInterface );
65 * Creates the texture in the GPU.
66 * Creates the texture and reserves memory for the first mipmap level
67 * @param[in] context The GL context
69 void Initialize( Context& context );
72 * Deletes the texture from the GPU
73 * @param[in] context The GL context
75 void Destroy( Context& context );
78 * Called by RenderManager to inform the texture that the context has been destroyed
80 void GlContextDestroyed();
83 * Uploads data to the texture.
84 * @param[in] context The GL context
85 * @param[in] pixelData A pixel data object
86 * @param[in] params Upload parameters. See UploadParams
88 void Upload( Context& context, PixelDataPtr pixelData, const Internal::Texture::UploadParams& params );
91 * Bind the texture to the given texture unit and applies the given sampler
92 * @param[in] context The GL context
93 * @param[in] textureUnit the texture unit
94 * @param[in] sampler The sampler to be used with the texture
95 * @return true if the bind succeeded, false otherwise
97 bool Bind( Context& context, unsigned int textureUnit, Render::Sampler* sampler );
100 * Auto generates mipmaps for the texture
101 * @param[in] context The GL context
103 void GenerateMipmaps( Context& context );
106 * Retrieve wheter the texture has an alpha channel
107 * @return True if the texture has alpha channel, false otherwise
109 bool HasAlphaChannel();
112 * Get the id of the texture
113 * @return Id of the texture
121 * Get the type of the texture
122 * @return Type of the texture
130 * Check if the texture is a native image
131 * @return if the texture is a native image
133 bool IsNativeImage() const
141 * Helper method to apply a sampler to the texture
142 * @param[in] context The GL context
143 * @param[in] sampler The sampler
145 void ApplySampler( Context& context, Render::Sampler* sampler );
147 NativeImageInterfacePtr mNativeImage; ///< Pointer to native image
148 Render::Sampler mSampler; ///< The current sampler state
149 GLuint mId; ///< Id of the texture
150 GLuint mTarget; ///< Specifies the target to which the texture is bound.
151 GLint mGlInternalFormat; ///< The gl internal format of the pixel data
152 GLenum mGlFormat; ///< The gl format of the pixel data
153 GLenum mPixelDataType; ///< The data type of the pixel data
154 uint16_t mWidth; ///< Width of the texture
155 uint16_t mHeight; ///< Height of the texture
156 uint16_t mMaxMipMapLevel; ///< Maximum mipmap level
157 Type mType:2; ///< Type of the texture
158 bool mHasAlpha : 1; ///< Whether the format has an alpha channel
159 bool mIsCompressed : 1; ///< Whether the format is compressed
164 } // namespace Render
166 } // namespace Internal
171 #endif // DALI_INTERNAL_RENDER_TEXTURE_H