Struct zng_view::extensions::ExternalImages

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pub struct ExternalImages { /* private fields */ }
Expand description

Tracks extension external images for a renderer.

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impl ExternalImages

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pub fn register_texture( &mut self, uv: TexelRect, texture: GLuint, ) -> ExternalImageId

Register an OpenGL texture.

Returns an ExternalImageId that can be used in display lists.

The id is only valid in the same renderer, and the texture must be generated by the same GL API used by the renderer. Note that you must manage the texture lifetime, unregister only releases the external image entry.

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pub fn register_image( &mut self, descriptor: ImageDescriptor, pixels: IpcBytes, ) -> ExternalImageId

Register a loaded image.

Returns an ExternalImageId that can be used in display lists.

The pixels are held in memory until unregister or the window is closed.

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pub fn unregister(&mut self, id: ExternalImageId)

Unregister the image or texture.

The id is invalid after this call, using it in a display list is undefined behavior and will likely cause access violation or other memory problems.

Trait Implementations§

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impl Default for ExternalImages

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fn default() -> ExternalImages

Returns the “default value” for a type. Read more

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