Mercurial > touhou

annotate examples/common.rs @ 717:d5d5496e4e53

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
examples: Propagate image loading errors.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Mon, 23 Sep 2019 14:01:35 +0200
parents 2b2376811f46
children 8d29dac12219
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
1 use image::{GenericImageView, DynamicImage, ImageError};
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
2 use luminance::pixel::{NormRGB8UI, NormRGBA8UI};
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
3 use luminance::texture::{Dim2, Flat, Sampler, Texture, GenMipmaps};
707
987409d48991 Switch to versioned luminance now that it got released, not hardcoded paths.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 706
diff changeset
4 use luminance_glfw::GlfwSurface;
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
5 use touhou::th06::anm0::Anm0;
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
6 use std::fs::File;
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
7 use std::io::{BufReader, Read};
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
8 use std::path::Path;
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
9
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
10 pub fn load_file_into_vec(filename: &Path) -> Vec<u8> {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
11 let file = File::open(filename).unwrap();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
12 let mut file = BufReader::new(file);
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
13 let mut buf = vec![];
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
14 file.read_to_end(&mut buf).unwrap();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
15 buf
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
16 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
17
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
18 pub enum LoadedTexture {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
19 Rgba(Texture<Flat, Dim2, NormRGBA8UI>),
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
20 Rgb(Texture<Flat, Dim2, NormRGB8UI>),
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
21 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
22
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
23 #[derive(Debug)]
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
24 pub enum TextureLoadError {
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
25 CannotOpenRgb(String, ImageError),
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
26 CannotOpenAlpha(String, ImageError),
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
27 AlphaToGrayscale(String),
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
28 }
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
29
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
30 fn load_rgb_png(surface: &mut GlfwSurface, path: &Path) -> Result<LoadedTexture, TextureLoadError> {
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
31 // load the texture into memory as a whole bloc (i.e. no streaming)
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
32 match image::open(&path) {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
33 Ok(img) => {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
34 let (width, height) = img.dimensions();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
35 let texels = img
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
36 .pixels()
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
37 .map(|(_x, _y, rgb)| (rgb[0], rgb[1], rgb[2]))
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
38 .collect::<Vec<_>>();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
39
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
40 // create the luminance texture; the third argument is the number of mipmaps we want (leave it
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
41 // to 0 for now) and the latest is a the sampler to use when sampling the texels in the
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
42 // shader (we’ll just use the default one)
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
43 let tex =
715
2b2376811f46 examples: Update luminance.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 708
diff changeset
44 Texture::new(surface, [width, height], 0, Sampler::default()).expect("luminance texture creation");
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
45
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
46 // the first argument disables mipmap generation (we don’t care so far)
708
3954801b6299 examples: Update to luminance 0.32.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 707
diff changeset
47 tex.upload(GenMipmaps::No, &texels).unwrap();
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
48
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
49 Ok(LoadedTexture::Rgb(tex))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
50 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
51
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
52 Err(e) => {
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
53 Err(TextureLoadError::CannotOpenRgb(path.to_str().unwrap().to_owned(), e))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
54 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
55 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
56 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
57
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
58 fn load_rgb_a_pngs(surface: &mut GlfwSurface, rgb: &Path, alpha: &Path) -> Result<LoadedTexture, TextureLoadError> {
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
59 // load the texture into memory as a whole bloc (i.e. no streaming)
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
60 match image::open(&alpha) {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
61 Ok(img) => {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
62 let (width, height) = img.dimensions();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
63 let alpha = match img.grayscale() {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
64 DynamicImage::ImageLuma8(img) => img,
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
65 _ => {
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
66 return Err(TextureLoadError::AlphaToGrayscale(alpha.to_str().unwrap().to_owned()))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
67 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
68 };
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
69 let img = match image::open(&rgb) {
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
70 Ok(img) => img,
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
71 Err(e) => {
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
72 return Err(TextureLoadError::CannotOpenRgb(rgb.to_str().unwrap().to_owned(), e))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
73 },
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
74 };
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
75 let texels = img
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
76 .pixels()
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
77 .zip(alpha.pixels())
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
78 .map(|((_x, _y, rgb), luma)| (rgb[0], rgb[1], rgb[2], luma[0]))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
79 .collect::<Vec<_>>();
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
80
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
81 // create the luminance texture; the third argument is the number of mipmaps we want (leave it
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
82 // to 0 for now) and the latest is a the sampler to use when sampling the texels in the
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
83 // shader (we’ll just use the default one)
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
84 let tex =
715
2b2376811f46 examples: Update luminance.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 708
diff changeset
85 Texture::new(surface, [width, height], 0, Sampler::default()).expect("luminance texture creation");
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
86
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
87 // the first argument disables mipmap generation (we don’t care so far)
708
3954801b6299 examples: Update to luminance 0.32.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 707
diff changeset
88 tex.upload(GenMipmaps::No, &texels).unwrap();
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
89
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
90 Ok(LoadedTexture::Rgba(tex))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
91 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
92
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
93 Err(e) => {
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
94 Err(TextureLoadError::CannotOpenAlpha(alpha.to_str().unwrap().to_owned(), e))
705
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
95 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
96 }
ed65f9412bc0 anmrenderer: split common loading functions in another module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
97 }
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
98
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
99 pub fn load_anm_image(mut surface: &mut GlfwSurface, anm0: &Anm0, anm_filename: &Path) -> Result<LoadedTexture, TextureLoadError> {
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
100 let png_filename = anm_filename.with_file_name(Path::new(&anm0.png_filename).file_name().unwrap());
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
101 match anm0.alpha_filename {
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
102 Some(ref filename) => {
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
103 let alpha_filename = anm_filename.with_file_name(Path::new(filename).file_name().unwrap());
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
104 load_rgb_a_pngs(&mut surface, &png_filename, &alpha_filename)
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
105 },
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
106 None => {
717
d5d5496e4e53 examples: Propagate image loading errors.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 715
diff changeset
107 load_rgb_png(&mut surface, &png_filename)
706
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
108 }
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
109 }
bca515da9047 examples: use common module.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 705
diff changeset
110 }