migrations/egui
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Add api for accessing backend texture via epi (#695)

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* Define NativeTexture trait for offscreen rendering
add demo for NativeTexture trait

* write changelog

* add comment for native texture example

* formatting

* add license of Rust logo

* NativeTexture trait method rename
remove duplicate function with native texture
remove rust logo

* deprecated notice for register_glium_texture,register_webgl_texture

* collect deprecated notice
This commit is contained in:
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2021-09-05 18:00:45 +09:00
committed by GitHub
parent acf9d0114d
commit 203d571c8b
10 changed files with 227 additions and 5 deletions
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31
egui_glium/src/painter.rs
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@@ -241,8 +241,7 @@ impl Painter {
id
}
/// register glium texture as egui texture
/// Usable for render to image rectangle
#[deprecated = "Use: `NativeTexture::register_native_texture` instead"]
pub fn register_glium_texture(
&mut self,
texture: glium::texture::SrgbTexture2d,
@@ -319,3 +318,31 @@ impl Painter {
}
}
}
impl epi::NativeTexture for Painter {
type Texture = glium::texture::srgb_texture2d::SrgbTexture2d;
fn register_native_texture(&mut self, native: Self::Texture) -> egui::TextureId {
let id = self.alloc_user_texture();
if let egui::TextureId::User(id) = id {
if let Some(Some(user_texture)) = self.user_textures.get_mut(id as usize) {
*user_texture = UserTexture {
pixels: vec![],
gl_texture: Some(native),
}
}
}
id
}
fn replace_native_texture(&mut self, id: egui::TextureId, replacing: Self::Texture) {
if let egui::TextureId::User(id) = id {
if let Some(Some(user_texture)) = self.user_textures.get_mut(id as usize) {
*user_texture = UserTexture {
pixels: vec![],
gl_texture: Some(replacing),
};
}
}
}
}