5575e6ea08
https://github.com/iced-rs/iced/issues/674 Uses image/svg support in `iced_graphics`. The is not currently using an atlas, and uses one texture/draw per image. This should be good enough for now; supporting images with glow is better than not supporting them, and if something else performs better, that improvement can be made without any change to the public API.
82 lines
2 KiB
Rust
82 lines
2 KiB
Rust
use glow::HasContext;
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use iced_graphics::image::{TextureStore, TextureStoreEntry};
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#[derive(Debug)]
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pub struct Textures;
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impl Textures {
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pub fn new() -> Self {
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Self
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}
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}
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impl TextureStore for Textures {
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type Entry = Entry;
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type State<'a> = &'a glow::Context;
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fn upload(
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&mut self,
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width: u32,
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height: u32,
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data: &[u8],
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gl: &mut &glow::Context,
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) -> Option<Self::Entry> {
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unsafe {
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let texture = gl.create_texture().expect("create texture");
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gl.bind_texture(glow::TEXTURE_2D, Some(texture));
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gl.tex_image_2d(
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glow::TEXTURE_2D,
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0,
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glow::SRGB8_ALPHA8 as i32,
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width as i32,
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height as i32,
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0,
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glow::BGRA,
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glow::UNSIGNED_BYTE,
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Some(data),
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);
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gl.tex_parameter_i32(
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glow::TEXTURE_2D,
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glow::TEXTURE_WRAP_S,
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glow::CLAMP_TO_EDGE as _,
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);
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gl.tex_parameter_i32(
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glow::TEXTURE_2D,
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glow::TEXTURE_WRAP_T,
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glow::CLAMP_TO_EDGE as _,
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);
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gl.tex_parameter_i32(
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glow::TEXTURE_2D,
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glow::TEXTURE_MIN_FILTER,
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glow::LINEAR as _,
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);
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gl.tex_parameter_i32(
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glow::TEXTURE_2D,
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glow::TEXTURE_MAG_FILTER,
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glow::LINEAR as _,
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);
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gl.bind_texture(glow::TEXTURE_2D, None);
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Some(Entry {
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size: (width, height),
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texture,
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})
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}
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}
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fn remove(&mut self, entry: &Entry, gl: &mut &glow::Context) {
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unsafe { gl.delete_texture(entry.texture) }
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}
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}
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#[derive(Debug)]
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pub struct Entry {
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size: (u32, u32),
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pub texture: glow::NativeTexture,
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}
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impl TextureStoreEntry for Entry {
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fn size(&self) -> (u32, u32) {
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self.size
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}
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}
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