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Merge pull request #180 from malikolivier/custom-texture-example

Browse Source 
Custom texture example with glium backend:
- Generate a texture
- Load a texture from a JPG image

NB:
- Moved all the resources for examples (the fonts and the images) to a shared resources folder.
- Updated glium support module to expose GL context and Textures.
This commit is contained in:
Malik Olivier Boussejra 2018-11-27 07:11:29 +09:00 committed by GitHub
commit 08a07ab19b
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GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 448 additions and 9 deletions
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2
imgui-examples/examples/support_gfx/mod.rs
View File

@ -72,7 +72,7 @@ pub fn run<F: FnMut(&Ui) -> bool>(title: String, clear_color: [f32; 4], mut run_
);
imgui.fonts().add_font_with_config(
include_bytes!("../mplus-1p-regular.ttf"),
include_bytes!("../../../resources/mplus-1p-regular.ttf"),
ImFontConfig::new()
.merge_mode(true)
.oversample_h(1)

281
imgui-glium-examples/Cargo.lock generated
View File

@ -1,8 +1,21 @@
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
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[[package]]
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[[package]]
name = "backtrace"
version = "0.3.9"
@ -78,6 +91,11 @@ dependencies = [
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]
[[package]]
name = "color_quant"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "core-foundation"
version = "0.6.2"
@ -103,6 +121,46 @@ dependencies = [
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]
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name = "crossbeam-deque"
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[[package]]
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@ -116,6 +174,11 @@ name = "downcast-rs"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
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@ -148,6 +211,15 @@ name = "fuchsia-zircon-sys"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
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[[package]]
name = "gl_generator"
version = "0.9.0"
@ -201,6 +273,23 @@ dependencies = [
"x11-dl 2.18.3 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
name = "image"
version = "0.20.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "imgui"
version = "0.0.22-pre"
@ -213,6 +302,7 @@ name = "imgui-glium-examples"
version = "0.0.22-pre"
dependencies = [
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@ -245,6 +335,23 @@ dependencies = [
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[[package]]
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@ -289,6 +396,11 @@ dependencies = [
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@ -306,6 +418,11 @@ dependencies = [
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@ -318,6 +435,61 @@ dependencies = [
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@ -373,6 +545,33 @@ name = "pkg-config"
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@ -398,6 +597,27 @@ name = "rand_core"
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@ -424,6 +644,11 @@ dependencies = [
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"checksum malloc_buf 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "62bb907fe88d54d8d9ce32a3cceab4218ed2f6b7d35617cafe9adf84e43919cb"
"checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
"checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
"checksum nix 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d37e713a259ff641624b6cb20e3b12b2952313ba36b6823c0f16e6cfd9e5de17"
"checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
"checksum num-derive 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8af1847c907c2f04d7bfd572fb25bbb4385c637fe5be163cf2f8c5d778fe1e7d"
"checksum num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "e83d528d2677f0518c570baf2b7abdcf0cd2d248860b68507bdcb3e91d4c0cea"
"checksum num-iter 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)" = "af3fdbbc3291a5464dc57b03860ec37ca6bf915ed6ee385e7c6c052c422b2124"
"checksum num-rational 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4e96f040177bb3da242b5b1ecf3f54b5d5af3efbbfb18608977a5d2767b22f10"
"checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
"checksum num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c51a3322e4bca9d212ad9a158a02abc6934d005490c054a2778df73a70aa0a30"
"checksum objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "9833ab0efe5361b1e2122a0544a5d3359576911a42cb098c2e59be8650807367"
"checksum osmesa-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "88cfece6e95d2e717e0872a7f53a8684712ad13822a7979bc760b9c77ec0013b"
"checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
@ -662,13 +934,19 @@ dependencies = [
"checksum parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ad7f7e6ebdc79edff6fdcb87a55b620174f7a989e3eb31b65231f4af57f00b8c"
"checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
"checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
"checksum png 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f54b9600d584d3b8a739e1662a595fab051329eff43f20e7d8cc22872962145b"
"checksum proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)" = "77619697826f31a02ae974457af0b29b723e5619e113e9397b8b82c6bd253f09"
"checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
"checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
"checksum rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1961a422c4d189dfb50ffa9320bf1f2a9bd54ecb92792fb9477f99a1045f3372"
"checksum rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0905b6b7079ec73b314d4c748701f6931eb79fd97c668caa3f1899b22b32c6db"
"checksum rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "373814f27745b2686b350dd261bfd24576a6fb0e2c5919b3a2b6005f820b0473"
"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
"checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
"checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
"checksum rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "bcfe5b13211b4d78e5c2cadfebd7769197d95c639c35a50057eb4c05de811395"
"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
"checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@ -676,7 +954,10 @@ dependencies = [
"checksum smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "153ffa32fd170e9944f7e0838edf824a754ec4c1fc64746fcc9fe1f8fa602e5d"
"checksum smithay-client-toolkit 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2051bffc6cbf271176e8ba1527f801b6444567daee15951ff5152aaaf7777b2f"
"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
"checksum syn 0.15.21 (registry+https://github.com/rust-lang/crates.io-index)" = "816b7af21405b011a23554ea2dc3f6576dc86ca557047c34098c1d741f10f823"
"checksum tempfile 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "55c1195ef8513f3273d55ff59fe5da6940287a0d7a98331254397f464833675b"
"checksum tiff 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a2cc6c4fd13cb1cfd20abdb196e794ceccb29371855b7e7f575945f920a5b3c2"
"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
"checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"

1
imgui-glium-examples/Cargo.toml
View File

@ -13,3 +13,4 @@ glium = { version = "0.22", default-features = true }
imgui = { version = "0.0.22-pre", path = "../" }
imgui-glium-renderer = { version = "0.0.22-pre", path = "../imgui-glium-renderer" }
imgui-glutin-support = { version = "0.0.22-pre", path = "../imgui-glutin-support" }
image = "0.20"

2
imgui-glium-examples/examples/color_button.rs
View File

@ -32,7 +32,7 @@ impl Default for State {
fn main() {
let mut state = State::default();
support::run("color_button.rs".to_owned(), CLEAR_COLOR, |ui| {
support::run("color_button.rs".to_owned(), CLEAR_COLOR, |ui, _, _| {
example_selector(&mut state, ui);
match state.example {
1 => example_1(&mut state, ui),

145
imgui-glium-examples/examples/custom_textures.rs Normal file
View File

@ -0,0 +1,145 @@
extern crate glium;
extern crate image;
extern crate imgui;
extern crate imgui_glium_renderer;
extern crate imgui_glutin_support;
use std::borrow::Cow;
use std::error::Error;
use std::io::Cursor;
use glium::{
backend::Facade,
texture::{ClientFormat, RawImage2d},
Texture2d,
};
use image::{jpeg::JPEGDecoder, DecodingResult, ImageDecoder};
use imgui::*;
mod support;
use support::Textures;
const CLEAR_COLOR: [f32; 4] = [1.0, 1.0, 1.0, 1.0];
#[derive(Default)]
struct CustomTexturesApp {
my_texture_id: Option<ImTexture>,
lenna: Option<Lenna>,
}
struct Lenna {
texture_id: ImTexture,
size: (f32, f32),
}
impl CustomTexturesApp {
fn register_textures<F>(
&mut self,
gl_ctx: &F,
textures: &mut Textures,
) -> Result<(), Box<dyn Error>>
where
F: Facade,
{
const WIDTH: usize = 100;
const HEIGHT: usize = 100;
if self.my_texture_id.is_none() {
// Generate dummy texture
let mut data = Vec::with_capacity(WIDTH * HEIGHT);
for i in 0..WIDTH {
for j in 0..HEIGHT {
// Insert RGB values
data.push(i as u8);
data.push(j as u8);
data.push((i + j) as u8);
}
}
let raw = RawImage2d {
data: Cow::Borrowed(&data),
width: WIDTH as u32,
height: HEIGHT as u32,
format: ClientFormat::U8U8U8,
};
let gl_texture = Texture2d::new(gl_ctx, raw)?;
let texture_id = textures.insert(gl_texture);
self.my_texture_id = Some(texture_id);
}
if self.lenna.is_none() {
self.lenna = Some(Lenna::new(gl_ctx, textures)?);
}
Ok(())
}
fn show_textures(&self, ui: &Ui) {
ui.window(im_str!("Hello textures"))
.size((400.0, 600.0), ImGuiCond::FirstUseEver)
.build(|| {
ui.text(im_str!("Hello textures!"));
if let Some(my_texture_id) = self.my_texture_id {
ui.text("Some generated texture");
ui.image(my_texture_id, (100.0, 100.0)).build();
}
if let Some(lenna) = &self.lenna {
ui.text("Say hello to Lenna.jpg");
lenna.show(ui);
}
});
}
}
impl Lenna {
fn new<F>(gl_ctx: &F, textures: &mut Textures) -> Result<Self, Box<dyn Error>>
where
F: Facade,
{
let lenna_bytes = include_bytes!("../../resources/Lenna.jpg");
let byte_stream = Cursor::new(lenna_bytes.as_ref());
let mut decoder = JPEGDecoder::new(byte_stream);
let (width, height) = decoder.dimensions()?;
let image = decoder.read_image()?;
let raw = if let DecodingResult::U8(data) = &image {
RawImage2d {
data: Cow::Borrowed(data),
width,
height,
format: ClientFormat::U8U8U8,
}
} else {
unimplemented!("I only know how to deal with U8 data")
};
let gl_texture = Texture2d::new(gl_ctx, raw)?;
let texture_id = textures.insert(gl_texture);
Ok(Lenna {
texture_id,
size: (width as f32, height as f32),
})
}
fn show(&self, ui: &Ui) {
ui.image(self.texture_id, self.size).build();
}
}
fn main() {
let mut my_app = CustomTexturesApp::default();
support::run(
"custom_textures.rs".to_owned(),
CLEAR_COLOR,
|ui, gl_ctx, textures| {
if let Err(e) = my_app.register_textures(gl_ctx, textures) {
panic!("Failed to register textures! {}", e);
}
my_app.show_textures(ui);
true
},
);
}

4
imgui-glium-examples/examples/hello_world.rs
View File

@ -11,7 +11,9 @@ mod support;
const CLEAR_COLOR: [f32; 4] = [1.0, 1.0, 1.0, 1.0];
fn main() {
support::run("hello_world.rs".to_owned(), CLEAR_COLOR, hello_world);
support::run("hello_world.rs".to_owned(), CLEAR_COLOR, |ui, _, _| {
hello_world(ui)
});
}
fn hello_world<'a>(ui: &Ui<'a>) -> bool {

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imgui-glium-examples/examples/mplus-1p-regular.ttf
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16
imgui-glium-examples/examples/support/mod.rs
View File

@ -1,8 +1,18 @@
use glium::{
backend::{Context, Facade},
Texture2d,
};
use imgui::{FontGlyphRange, ImFontConfig, ImGui, Ui};
use imgui_glutin_support;
use std::rc::Rc;
use std::time::Instant;
pub fn run<F: FnMut(&Ui) -> bool>(title: String, clear_color: [f32; 4], mut run_ui: F) {
pub type Textures = imgui::Textures<Texture2d>;
pub fn run<F>(title: String, clear_color: [f32; 4], mut run_ui: F)
where
F: FnMut(&Ui, &Rc<Context>, &mut Textures) -> bool,
{
use glium::glutin;
use glium::{Display, Surface};
use imgui_glium_renderer::Renderer;
@ -32,7 +42,7 @@ pub fn run<F: FnMut(&Ui) -> bool>(title: String, clear_color: [f32; 4], mut run_
);
imgui.fonts().add_font_with_config(
include_bytes!("../mplus-1p-regular.ttf"),
include_bytes!("../../../resources/mplus-1p-regular.ttf"),
ImFontConfig::new()
.merge_mode(true)
.oversample_h(1)
@ -80,7 +90,7 @@ pub fn run<F: FnMut(&Ui) -> bool>(title: String, clear_color: [f32; 4], mut run_
let frame_size = imgui_glutin_support::get_frame_size(&window, hidpi_factor).unwrap();
let ui = imgui.frame(frame_size, delta_s);
if !run_ui(&ui) {
if !run_ui(&ui, display.get_context(), renderer.textures()) {
break;
}

2
imgui-glium-examples/examples/test_drawing_channels_split.rs
View File

@ -13,7 +13,7 @@ fn main() {
support::run(
"test_drawing_channels_split".to_owned(),
CLEAR_COLOR,
|ui| {
|ui, _, _| {
let draw_list = ui.get_window_draw_list();
// Will draw channel 0 first, then channel 1, whatever the order of
// the calls in the code.

2
imgui-glium-examples/examples/test_window.rs
View File

@ -8,7 +8,7 @@ mod support;
const CLEAR_COLOR: [f32; 4] = [0.2, 0.2, 0.2, 1.0];
fn main() {
support::run("test_window.rs".to_owned(), CLEAR_COLOR, |ui| {
support::run("test_window.rs".to_owned(), CLEAR_COLOR, |ui, _, _| {
let mut open = true;
ui.show_demo_window(&mut open);
open

2
imgui-glium-examples/examples/test_window_impl.rs
View File

@ -193,7 +193,7 @@ const CLEAR_COLOR: [f32; 4] = [114.0 / 255.0, 144.0 / 255.0, 154.0 / 255.0, 1.0]
fn main() {
let mut state = State::default();
support::run("test_window.rs".to_owned(), CLEAR_COLOR, |ui| {
support::run("test_window.rs".to_owned(), CLEAR_COLOR, |ui, _, _| {
let mut open = true;
show_test_window(ui, &mut state, &mut open);
open

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0
imgui-examples/examples/mplus-1p-regular.ttf → resources/mplus-1p-regular.ttf
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