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texture_set: add memory image loading function

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Alula 2020-08-28 05:48:41 +02:00
parent 647e5c73cd
commit b680db9114
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GPG key ID: 3E00485503A1D8BA
1 changed files with 23 additions and 6 deletions
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29
src/texture_set.rs
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@ -12,6 +12,7 @@ use log::info;
use crate::common;
use crate::engine_constants::EngineConstants;
use crate::str;
use image::RgbaImage;
pub struct SizedBatch {
pub batch: SpriteBatch,
@ -95,6 +96,14 @@ impl TextureSet {
}
}
fn make_transparent(rgba: &mut RgbaImage) {
for (r, g, b, a) in rgba.iter_mut().tuples() {
if *r == 0 && *g == 0 && *b == 0 {
*a = 0;
}
}
}
fn load_image(&self, ctx: &mut Context, path: &str) -> GameResult<Image> {
let img = {
let mut buf = [0u8; 8];
@ -104,15 +113,23 @@ impl TextureSet {
let image = image::load(BufReader::new(reader), image::guess_format(&buf)?)?;
let mut rgba = image.to_rgba();
if image.color().channel_count() != 4 {
for (r, g, b, a) in rgba.iter_mut().tuples() {
if *r == 0 && *g == 0 && *b == 0 {
*a = 0;
}
}
TextureSet::make_transparent(&mut rgba);
}
rgba
};
let (width, height) = img.dimensions();
Image::from_rgba8(ctx, width as u16, height as u16, img.as_ref())
}
fn load_image_from_buf(&self, ctx: &mut Context, buf: &[u8]) -> GameResult<Image> {
let img = {
let image = image::load_from_memory(buf)?;
let mut rgba = image.to_rgba();
if image.color().channel_count() != 4 {
TextureSet::make_transparent(&mut rgba);
}
rgba
};
let (width, height) = img.dimensions();