1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499
use crate::{Bitmap, Object, PixelFormat, TextureComponents}; use glib; use glib::object::IsA; use glib::translate::*; use std::{fmt, mem, ptr}; glib_wrapper! { pub struct Texture(Interface<ffi::CoglTexture>) @requires Object; match fn { get_type => || ffi::cogl_texture_get_gtype(), } } pub const NONE_TEXTURE: Option<&Texture> = None; /// Trait containing all `Texture` methods. /// /// # Implementors /// /// [`Texture2DSliced`](struct.Texture2DSliced.html), [`Texture2D`](struct.Texture2D.html), [`Texture3D`](struct.Texture3D.html), [`TextureRectangle`](struct.TextureRectangle.html), [`Texture`](struct.Texture.html) pub trait TextureExt: 'static { /// Explicitly allocates the storage for the given `self` which /// allows you to be sure that there is enough memory for the /// texture and if not then the error can be handled gracefully. /// /// `<note>`Normally applications don't need to use this api directly /// since the texture will be implicitly allocated when data is set on /// the texture, or if the texture is attached to a `CoglOffscreen` /// framebuffer and rendered too.`</note>` /// /// # Returns /// /// `true` if the texture was successfully allocated, /// otherwise `false` and `error` will be updated if it /// wasn't `None`. fn allocate(&self) -> Result<bool, glib::Error>; /// Queries what components the given `self` stores internally as set /// via `Texture::set_components`. /// /// For textures created by the ‘_with_size’ constructors the default /// is `TextureComponents::Rgba`. The other constructors which take /// a `Bitmap` or a data pointer default to the same components as /// the pixel format of the data. fn get_components(&self) -> TextureComponents; /// Copies the pixel data from a cogl texture to system memory. /// /// `<note>`Don't pass the value of `cogl_texture_get_rowstride` as the /// `rowstride` argument, the rowstride should be the rowstride you /// want for the destination `data` buffer not the rowstride of the /// source texture`</note>` /// ## `format` /// the `PixelFormat` to store the texture as. /// ## `rowstride` /// the rowstride of `data` in bytes or pass 0 to calculate /// from the bytes-per-pixel of `format` multiplied by the /// `self` width. /// ## `data` /// memory location to write the `self`'s contents, or `None` /// to only query the data size through the return value. /// /// # Returns /// /// the size of the texture data in bytes fn get_data(&self, format: PixelFormat, rowstride: u32, data: &[u8]) -> i32; /// Queries the GL handles for a GPU side texture through its `Texture`. /// /// If the texture is spliced the data for the first sub texture will be /// queried. /// ## `out_gl_handle` /// pointer to return location for the /// textures GL handle, or `None`. /// ## `out_gl_target` /// pointer to return location for the /// GL target type, or `None`. /// /// # Returns /// /// `true` if the handle was successfully retrieved, `false` /// if the handle was invalid fn get_gl_texture(&self) -> (bool, u32, u32); /// Queries the height of a cogl texture. /// /// # Returns /// /// the height of the GPU side texture in pixels fn get_height(&self) -> u32; /// Queries the maximum wasted (unused) pixels in one dimension of a GPU side /// texture. /// /// # Returns /// /// the maximum waste fn get_max_waste(&self) -> i32; /// Queries the pre-multiplied alpha status for internally stored red, /// green and blue components for the given `self` as set by /// `Texture::set_premultiplied`. /// /// By default the pre-multipled state is `true`. /// /// # Returns /// /// `true` if red, green and blue components are /// internally stored pre-multiplied by the alpha /// value or `false` if not. fn get_premultiplied(&self) -> bool; /// Queries the width of a cogl texture. /// /// # Returns /// /// the width of the GPU side texture in pixels fn get_width(&self) -> u32; /// Queries if a texture is sliced (stored as multiple GPU side tecture /// objects). /// /// # Returns /// /// `true` if the texture is sliced, `false` if the texture /// is stored as a single GPU texture fn is_sliced(&self) -> bool; /// Affects the internal storage format for this texture by specifying /// what components will be required for sampling later. /// /// This api affects how data is uploaded to the GPU since unused /// components can potentially be discarded from source data. /// /// For textures created by the ‘_with_size’ constructors the default /// is `TextureComponents::Rgba`. The other constructors which take /// a `Bitmap` or a data pointer default to the same components as /// the pixel format of the data. /// /// Note that the `TextureComponents::Rg` format is not available /// on all drivers. The availability can be determined by checking for /// the `FeatureID::OglFeatureIdTextureRg` feature. If this format is used on /// a driver where it is not available then `TextureError::Format` /// will be raised when the texture is allocated. Even if the feature /// is not available then `PixelFormat::Rg88` can still be used as /// an image format as long as `TextureComponents::Rg` isn't used /// as the texture's components. fn set_components(&self, components: TextureComponents); /// `self` a `Texture`. /// Sets all the pixels for a given mipmap `level` by copying the pixel /// data pointed to by the `data` argument into the given `self`. /// /// `data` should point to the first pixel to copy corresponding /// to the top left of the mipmap `level` being set. /// /// If `rowstride` equals 0 then it will be automatically calculated /// from the width of the mipmap level and the bytes-per-pixel for the /// given `format`. /// /// A mipmap `level` of 0 corresponds to the largest, base image of a /// texture and `level` 1 is half the width and height of level 0. If /// dividing any dimension of the previous level by two results in a /// fraction then round the number down (`floor`), but clamp to 1 /// something like this: /// /// /// ```text /// next_width = MAX (1, floor (prev_width)); /// ``` /// /// You can determine the number of mipmap levels for a given texture /// like this: /// /// /// ```text /// n_levels = 1 + floor (log2 (max_dimension)); /// ``` /// /// Where `max_dimension` is the larger of `Texture::get_width` and /// `Texture::get_height`. /// /// It is an error to pass a `level` number >= the number of levels that /// `self` can have according to the above calculation. /// /// `<note>`Since the storage for a `Texture` is allocated lazily then /// if the given `self` has not previously been allocated then this /// api can return `false` and throw an exceptional `error` if there is /// not enough memory to allocate storage for `self`.`</note>` /// ## `format` /// the `PixelFormat` used in the source `data` buffer. /// ## `rowstride` /// rowstride of the source `data` buffer (computed from /// the texture width and `format` if it equals 0) /// ## `data` /// the source data, pointing to the first top-left pixel to set /// ## `level` /// The mipmap level to update (Normally 0 for the largest, /// base texture) /// /// # Returns /// /// `true` if the data upload was successful, and /// `false` otherwise fn set_data( &self, format: PixelFormat, rowstride: i32, data: &[u8], level: i32, ) -> Result<bool, glib::Error>; /// Affects the internal storage format for this texture by specifying /// whether red, green and blue color components should be stored as /// pre-multiplied alpha values. /// /// This api affects how data is uploaded to the GPU since Cogl will /// convert source data to have premultiplied or unpremultiplied /// components according to this state. /// /// For example if you create a texture via /// `Texture2D::new_with_size` and then upload data via /// `Texture::set_data` passing a source format of /// `PixelFormat::Rgba8888` then Cogl will internally multiply the /// red, green and blue components of the source data by the alpha /// component, for each pixel so that the internally stored data has /// pre-multiplied alpha components. If you instead upload data that /// already has pre-multiplied components by passing /// `PixelFormat::Rgba8888Pre` as the source format to /// `Texture::set_data` then the data can be uploaded without being /// converted. /// /// By default the `premultipled` state is `true`. /// ## `premultiplied` /// Whether any internally stored red, green or blue /// components are pre-multiplied by an alpha /// component. fn set_premultiplied(&self, premultiplied: bool); /// Sets the pixels in a rectangular subregion of `self` from an in-memory /// buffer containing pixel data. /// /// `<note>`The region set can't be larger than the source `data``</note>` /// ## `src_x` /// upper left coordinate to use from source data. /// ## `src_y` /// upper left coordinate to use from source data. /// ## `dst_x` /// upper left destination horizontal coordinate. /// ## `dst_y` /// upper left destination vertical coordinate. /// ## `dst_width` /// width of destination region to write. (Must be less /// than or equal to `width`) /// ## `dst_height` /// height of destination region to write. (Must be less /// than or equal to `height`) /// ## `width` /// width of source data buffer. /// ## `height` /// height of source data buffer. /// ## `format` /// the `PixelFormat` used in the source buffer. /// ## `rowstride` /// rowstride of source buffer (computed from width if none /// specified) /// ## `data` /// the actual pixel data. /// /// # Returns /// /// `true` if the subregion upload was successful, and /// `false` otherwise fn set_region( &self, src_x: i32, src_y: i32, dst_x: i32, dst_y: i32, dst_width: u32, dst_height: u32, width: i32, height: i32, format: PixelFormat, rowstride: u32, data: &[u8], ) -> bool; /// Copies a specified source region from `bitmap` to the position /// (`src_x`, `src_y`) of the given destination texture `handle`. /// /// `<note>`The region updated can't be larger than the source /// bitmap`</note>` /// ## `src_x` /// upper left coordinate to use from the source bitmap. /// ## `src_y` /// upper left coordinate to use from the source bitmap /// ## `dst_x` /// upper left destination horizontal coordinate. /// ## `dst_y` /// upper left destination vertical coordinate. /// ## `dst_width` /// width of destination region to write. (Must be less /// than or equal to the bitmap width) /// ## `dst_height` /// height of destination region to write. (Must be less /// than or equal to the bitmap height) /// ## `bitmap` /// The source bitmap to read from /// /// # Returns /// /// `true` if the subregion upload was successful, and /// `false` otherwise fn set_region_from_bitmap( &self, src_x: i32, src_y: i32, dst_x: i32, dst_y: i32, dst_width: u32, dst_height: u32, bitmap: &Bitmap, ) -> bool; } impl<O: IsA<Texture>> TextureExt for O { fn allocate(&self) -> Result<bool, glib::Error> { unsafe { let mut error = ptr::null_mut(); let ret = ffi::cogl_texture_allocate(self.as_ref().to_glib_none().0, &mut error); if error.is_null() { Ok(ret == crate::TRUE) } else { Err(from_glib_full(error)) } } } fn get_components(&self) -> TextureComponents { unsafe { from_glib(ffi::cogl_texture_get_components( self.as_ref().to_glib_none().0, )) } } fn get_data(&self, format: PixelFormat, rowstride: u32, data: &[u8]) -> i32 { unsafe { ffi::cogl_texture_get_data( self.as_ref().to_glib_none().0, format.to_glib(), rowstride, data.to_glib_none().0, ) } } fn get_gl_texture(&self) -> (bool, u32, u32) { unsafe { let mut out_gl_handle = mem::MaybeUninit::uninit(); let mut out_gl_target = mem::MaybeUninit::uninit(); let ret = ffi::cogl_texture_get_gl_texture( self.as_ref().to_glib_none().0, out_gl_handle.as_mut_ptr(), out_gl_target.as_mut_ptr(), ); let out_gl_handle = out_gl_handle.assume_init(); let out_gl_target = out_gl_target.assume_init(); (ret == crate::TRUE, out_gl_handle, out_gl_target) } } fn get_height(&self) -> u32 { unsafe { ffi::cogl_texture_get_height(self.as_ref().to_glib_none().0) } } fn get_max_waste(&self) -> i32 { unsafe { ffi::cogl_texture_get_max_waste(self.as_ref().to_glib_none().0) } } fn get_premultiplied(&self) -> bool { unsafe { ffi::cogl_texture_get_premultiplied(self.as_ref().to_glib_none().0) == crate::TRUE } } fn get_width(&self) -> u32 { unsafe { ffi::cogl_texture_get_width(self.as_ref().to_glib_none().0) } } fn is_sliced(&self) -> bool { unsafe { ffi::cogl_texture_is_sliced(self.as_ref().to_glib_none().0) == crate::TRUE } } fn set_components(&self, components: TextureComponents) { unsafe { ffi::cogl_texture_set_components(self.as_ref().to_glib_none().0, components.to_glib()); } } fn set_data( &self, format: PixelFormat, rowstride: i32, data: &[u8], level: i32, ) -> Result<bool, glib::Error> { unsafe { let mut error = ptr::null_mut(); let ret = ffi::cogl_texture_set_data( self.as_ref().to_glib_none().0, format.to_glib(), rowstride, data.to_glib_none().0, level, &mut error, ); if error.is_null() { Ok(ret == crate::TRUE) } else { Err(from_glib_full(error)) } } } fn set_premultiplied(&self, premultiplied: bool) { unsafe { ffi::cogl_texture_set_premultiplied( self.as_ref().to_glib_none().0, premultiplied as i32, ); } } fn set_region( &self, src_x: i32, src_y: i32, dst_x: i32, dst_y: i32, dst_width: u32, dst_height: u32, width: i32, height: i32, format: PixelFormat, rowstride: u32, data: &[u8], ) -> bool { unsafe { ffi::cogl_texture_set_region( self.as_ref().to_glib_none().0, src_x, src_y, dst_x, dst_y, dst_width, dst_height, width, height, format.to_glib(), rowstride, data.as_ptr(), ) == crate::TRUE } } fn set_region_from_bitmap( &self, src_x: i32, src_y: i32, dst_x: i32, dst_y: i32, dst_width: u32, dst_height: u32, bitmap: &Bitmap, ) -> bool { unsafe { ffi::cogl_texture_set_region_from_bitmap( self.as_ref().to_glib_none().0, src_x, src_y, dst_x, dst_y, dst_width, dst_height, bitmap.to_glib_none().0, ) == crate::TRUE } } } impl fmt::Display for Texture { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "Texture") } }