Add a minimal Winit and WGPU based example

This commit is contained in:
Robert Bragg
2022-05-10 01:16:57 +01:00
parent 02dda282d0
commit 915f7382e5
40 changed files with 1251 additions and 0 deletions
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*.iml
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.DS_Store
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.cxx
local.properties
*.so
# Added by cargo
/target
Cargo.lock
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[package]
name = "agdk-winit-wgpu"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
log = "0.4"
winit = { git = "https://github.com/rib/winit", branch = "agdk-game-activity" }
#winit = { path="../../../winit" }
wgpu = "0.12.0"
pollster = "0.2"
[target.'cfg(not(target_os = "android"))'.dependencies]
simple_logger = "2"
[target.'cfg(target_os = "android")'.dependencies]
android_logger = "0.11.0"
game-activity = { path="../../game-activity" }
[features]
default = []
desktop = []
[lib]
name="main"
crate_type=["cdylib"]
[[bin]]
path="src/lib.rs"
name="test-winit-wgpu"
required-features = [ "desktop" ]
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This tests using the game_activity crate with winit and wgpu.
This is based on a re-worked winit backend here:
https://github.com/rib/winit/tree/agdk-game-activity
Although it would have been possible to handle the suspend/resume
lifecycle events with a simpler approach of destroying and
recreating all graphics state, this tries to represent how
lifecycle events could be handled in more complex applications,
such as within Bevy.
Considering that lifecycle events aren't supported consistently
on desktop platforms this test also aims to build and run
on desktop - for the sake of testing how more complex
applications (that need to be portable) can work. (enable
"desktop" feature to build binary)
```
rustup target add aarch64-linux-android
cargo install cargo-ndk
export ANDROID_NDK_HOME="path/to/ndk"
cargo ndk -t arm64-v8a -o app/src/main/jniLibs/ build
export ANDROID_HOME="path/to/sdk"
./gradlew build
./gradlew installDebug
adb shell am start -n co.realfit.agdkwinitwgpu/.MainActivity
```
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/build
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plugins {
id 'com.android.application'
}
android {
compileSdk 31
defaultConfig {
applicationId "co.realfit.agdkwinitwgpu"
minSdk 28
targetSdk 31
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled false
//packagingOptions {
// doNotStrip '**/*.so'
//}
//debuggable true
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
// To use the Android Frame Pacing library
//implementation "androidx.games:games-frame-pacing:1.9.1"
// To use the Android Performance Tuner
//implementation "androidx.games:games-performance-tuner:1.5.0"
// To use the Games Activity library
implementation "androidx.games:games-activity:1.1.0"
// To use the Games Controller Library
//implementation "androidx.games:games-controller:1.1.0"
// To use the Games Text Input Library
//implementation "androidx.games:games-text-input:1.1.0"
}
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="co.realfit.agdkwinitwgpu">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="AGDK Winit Wgpu"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.RustTemplate">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data android:name="android.app.lib_name" android:value="main" />
</activity>
</application>
</manifest>
@@ -0,0 +1,70 @@
package co.realfit.agdkwinitwgpu;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.WindowCompat;
import androidx.core.view.WindowInsetsCompat;
import androidx.core.view.WindowInsetsControllerCompat;
import com.google.androidgamesdk.GameActivity;
import android.os.Bundle;
import android.content.pm.PackageManager;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
public class MainActivity extends GameActivity {
static {
// Load the STL first to workaround issues on old Android versions:
// "if your app targets a version of Android earlier than Android 4.3
// (Android API level 18),
// and you use libc++_shared.so, you must load the shared library before any other
// library that depends on it."
// See https://developer.android.com/ndk/guides/cpp-support#shared_runtimes
//System.loadLibrary("c++_shared");
// Load the native library.
// The name "android-game" depends on your CMake configuration, must be
// consistent here and inside AndroidManifect.xml
System.loadLibrary("main");
}
private void hideSystemUI() {
// This will put the game behind any cutouts and waterfalls on devices which have
// them, so the corresponding insets will be non-zero.
if (VERSION.SDK_INT >= VERSION_CODES.P) {
getWindow().getAttributes().layoutInDisplayCutoutMode
= WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
}
// From API 30 onwards, this is the recommended way to hide the system UI, rather than
// using View.setSystemUiVisibility.
View decorView = getWindow().getDecorView();
WindowInsetsControllerCompat controller = new WindowInsetsControllerCompat(getWindow(),
decorView);
controller.hide(WindowInsetsCompat.Type.systemBars());
controller.hide(WindowInsetsCompat.Type.displayCutout());
controller.setSystemBarsBehavior(
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// When true, the app will fit inside any system UI windows.
// When false, we render behind any system UI windows.
WindowCompat.setDecorFitsSystemWindows(getWindow(), false);
hideSystemUI();
// You can set IME fields here or in native code using GameActivity_setImeEditorInfoFields.
// We set the fields in native_engine.cpp.
// super.setImeEditorInfoFields(InputType.TYPE_CLASS_TEXT,
// IME_ACTION_NONE, IME_FLAG_NO_FULLSCREEN );
super.onCreate(savedInstanceState);
}
public boolean isGooglePlayGames() {
PackageManager pm = getPackageManager();
return pm.hasSystemFeature("com.google.android.play.feature.HPE_EXPERIENCE");
}
}
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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
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<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.RustTemplate" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_200</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/black</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_200</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="purple_200">#FFBB86FC</color>
<color name="purple_500">#FF6200EE</color>
<color name="purple_700">#FF3700B3</color>
<color name="teal_200">#FF03DAC5</color>
<color name="teal_700">#FF018786</color>
<color name="black">#FF000000</color>
<color name="white">#FFFFFFFF</color>
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<!-- Base application theme. -->
<style name="Theme.RustTemplate" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/purple_500</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/white</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_700</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
</resources>
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// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
id 'com.android.application' version '7.1.2' apply false
id 'com.android.library' version '7.1.2' apply false
}
task clean(type: Delete) {
delete rootProject.buildDir
}
@@ -0,0 +1,21 @@
# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
# AndroidX package structure to make it clearer which packages are bundled with the
# Android operating system, and which are packaged with your app"s APK
# https://developer.android.com/topic/libraries/support-library/androidx-rn
android.useAndroidX=true
# Enables namespacing of each library's R class so that its R class includes only the
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# thereby reducing the size of the R class for that library
android.nonTransitiveRClass=true
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#Mon May 02 15:39:12 BST 2022
distributionBase=GRADLE_USER_HOME
distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
distributionPath=wrapper/dists
zipStorePath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
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#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"
+89
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@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega
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pluginManagement {
repositories {
gradlePluginPortal()
google()
mavenCentral()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral()
}
}
include ':app'
+329
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use log::Level;
use log::trace;
use wgpu::TextureFormat;
use wgpu::{Instance, Adapter, Device, ShaderModule, PipelineLayout, RenderPipeline, Queue};
use winit::event_loop::EventLoopWindowTarget;
use std::ops::Deref;
use std::borrow::Cow;
use std::sync::{Arc, RwLock};
use winit::{
event::{Event, WindowEvent},
event_loop::{ControlFlow, EventLoop},
};
struct RenderState {
device: Device,
queue: Queue,
_shader: ShaderModule,
target_format: TextureFormat,
_pipeline_layout: PipelineLayout,
render_pipeline: RenderPipeline,
}
struct SurfaceState {
window: winit::window::Window,
surface: wgpu::Surface
}
struct AppInner {
instance: Instance,
adapter: Option<Adapter>,
surface_state: Option<SurfaceState>,
render_state: Option<RenderState>,
}
struct App {
inner: Arc<RwLock<AppInner>>
}
impl App {
fn new(instance: Instance) -> Self {
Self {
inner: Arc::new(RwLock::new(AppInner {
instance,
adapter: None,
surface_state: None,
render_state: None,
}))
}
}
}
impl Deref for App {
type Target = Arc<RwLock<AppInner>>;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
async fn init_render_state(adapter: &Adapter, target_format: TextureFormat) -> RenderState {
trace!("Initializing render state");
trace!("WGPU: requesting device");
// Create the logical device and command queue
let (device, queue) = adapter
.request_device(
&wgpu::DeviceDescriptor {
label: None,
features: wgpu::Features::empty(),
// Make sure we use the texture resolution limits from the adapter, so we can support images the size of the swapchain.
limits: wgpu::Limits::downlevel_webgl2_defaults()
.using_resolution(adapter.limits()),
},
None,
)
.await
.expect("Failed to create device");
trace!("WGPU: loading shader");
// Load the shaders from disk
let shader = device.create_shader_module(&wgpu::ShaderModuleDescriptor {
label: None,
source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(include_str!("shader.wgsl"))),
});
trace!("WGPU: creating pipeline layout");
let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
label: None,
bind_group_layouts: &[],
push_constant_ranges: &[],
});
trace!("WGPU: creating render pipeline");
let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
label: None,
layout: Some(&pipeline_layout),
vertex: wgpu::VertexState {
module: &shader,
entry_point: "vs_main",
buffers: &[],
},
fragment: Some(wgpu::FragmentState {
module: &shader,
entry_point: "fs_main",
targets: &[target_format.into()],
}),
primitive: wgpu::PrimitiveState::default(),
depth_stencil: None,
multisample: wgpu::MultisampleState::default(),
multiview: None,
});
RenderState {
device,
queue,
_shader: shader,
target_format,
_pipeline_layout: pipeline_layout,
render_pipeline,
}
}
fn configure_surface_swapchain(render_state: &RenderState, surface_state: &SurfaceState) {
let swapchain_format = render_state.target_format;
let size = surface_state.window.inner_size();
let mut config = wgpu::SurfaceConfiguration {
usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
format: swapchain_format,
width: size.width,
height: size.height,
present_mode: wgpu::PresentMode::Mailbox,
//present_mode: wgpu::PresentMode::Fifo,
};
trace!("WGPU: Configuring surface swapchain: format = {swapchain_format:?}, size = {size:?}");
surface_state.surface.configure(&render_state.device, &config);
}
// We want to defer the initialization of our render state until
// we have a surface so we can take its format into account.
//
// After we've initialized our render state once though we
// expect all future surfaces will have the same format and we
// so this stat will remain valid.
async fn ensure_render_state_for_surface(app: &App, new_surface_state: &SurfaceState) {
let mut app_guard = app.inner.write().unwrap();
if app_guard.adapter.is_none() {
trace!("WGPU: requesting a suitable adapter (compatible with our surface)");
let adapter = app_guard.instance
.request_adapter(&wgpu::RequestAdapterOptions {
power_preference: wgpu::PowerPreference::default(),
force_fallback_adapter: false,
// Request an adapter which can render to our surface
compatible_surface: Some(&new_surface_state.surface),
})
.await
.expect("Failed to find an appropriate adapter");
app_guard.adapter = Some(adapter);
}
let adapter = app_guard.adapter.as_ref().unwrap();
if app_guard.render_state.is_none() {
trace!("WGPU: finding preferred swapchain format");
let swapchain_format = new_surface_state.surface.get_preferred_format(&adapter).unwrap();
let rs = init_render_state(adapter, swapchain_format).await;
app_guard.render_state = Some(rs);
}
}
fn create_surface<T>(app: &App, event_loop: &EventLoopWindowTarget<T>) -> SurfaceState {
let window = winit::window::Window::new(&event_loop).unwrap();
trace!("WGPU: creating surface for native window");
let guard = app.inner.read().unwrap();
let surface = unsafe { guard.instance.create_surface(&window) };
SurfaceState {
window,
surface
}
}
fn resume<T>(app: &App, event_loop: &EventLoopWindowTarget<T>) {
trace!("Resumed, creating render state...");
let new_surface = create_surface(&app, event_loop);
pollster::block_on(ensure_render_state_for_surface(&app, &new_surface));
app.write().unwrap().surface_state = Some(new_surface);
let guard = app.read().unwrap();
let render_state = guard.render_state.as_ref().unwrap();
let surface_state = guard.surface_state.as_ref().unwrap();
configure_surface_swapchain(render_state, surface_state);
trace!("Making Redraw Request");
surface_state.window.request_redraw();
}
fn run(event_loop: EventLoop<()>, app: App) {
//let mut running = false;
trace!("Running mainloop...");
event_loop.run(move |event, event_loop, control_flow| {
trace!("Received Winit event: {event:?}");
*control_flow = ControlFlow::Wait;
match event {
Event::NewEvents(winit::event::StartCause::Init) => {
// Note: that because Winit doesn't currently support lifecycle events consistently
// across platforms then we effectively issue a fake 'resume' on non-android
// platforms...
#[cfg(not(target_os="android"))]
resume(&app, event_loop)
}
Event::Resumed => {
resume(&app, event_loop);
}
Event::Suspended => {
trace!("Suspended, dropping render state...");
let mut guard = app.write().unwrap();
//guard.running = false;
guard.render_state = None;
},
Event::WindowEvent {
event: WindowEvent::Resized(_size),
..
} => {
let guard = app.read().unwrap();
if let Some(ref surface_state) = guard.surface_state {
if let Some(ref render_state) = guard.render_state {
configure_surface_swapchain(render_state, surface_state);
// Winit: doesn't currently implicitly request a redraw
// for a resize which may be required on some platforms...
surface_state.window.request_redraw();
}
}
}
Event::RedrawRequested(_) => {
trace!("Handling Redraw Request");
let guard = app.read().unwrap();
if let Some(ref surface_state) = guard.surface_state {
if let Some(ref rs) = guard.render_state {
let frame = surface_state.surface
.get_current_texture()
.expect("Failed to acquire next swap chain texture");
let view = frame
.texture
.create_view(&wgpu::TextureViewDescriptor::default());
let mut encoder =
rs.device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
{
let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
label: None,
color_attachments: &[wgpu::RenderPassColorAttachment {
view: &view,
resolve_target: None,
ops: wgpu::Operations {
load: wgpu::LoadOp::Clear(wgpu::Color::GREEN),
store: true,
},
}],
depth_stencil_attachment: None,
});
rpass.set_pipeline(&rs.render_pipeline);
rpass.draw(0..3, 0..1);
}
rs.queue.submit(Some(encoder.finish()));
frame.present();
surface_state.window.request_redraw();
}
}
}
Event::WindowEvent {
event: WindowEvent::CloseRequested,
..
} => *control_flow = ControlFlow::Exit,
_ => {}
}
});
}
fn _main() {
let event_loop = EventLoop::new();
// We can decide on our graphics API / backend up-front and that
// doesn't need to be re-considered later
let instance = wgpu::Instance::new(wgpu::Backends::all());
//let instance = wgpu::Instance::new(wgpu::Backends::VULKAN);
//let instance = wgpu::Instance::new(wgpu::Backends::GL);
let app = App::new(instance);
run(event_loop, app);
}
#[cfg(target_os="android")]
#[no_mangle]
extern "C" fn android_main() {
android_logger::init_once(
android_logger::Config::default().with_min_level(Level::Trace)
);
_main();
}
// Stop rust-analyzer from complaining that this file doesn't have a main() function...
#[cfg(target_os="android")]
fn main() {}
#[cfg(not(target_os="android"))]
fn main() {
simple_logger::SimpleLogger::new().init().unwrap();
_main();
}
+11
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[[stage(vertex)]]
fn vs_main([[builtin(vertex_index)]] in_vertex_index: u32) -> [[builtin(position)]] vec4<f32> {
let x = f32(i32(in_vertex_index) - 1);
let y = f32(i32(in_vertex_index & 1u) * 2 - 1);
return vec4<f32>(x, y, 0.0, 1.0);
}
[[stage(fragment)]]
fn fs_main() -> [[location(0)]] vec4<f32> {
return vec4<f32>(1.0, 0.0, 0.0, 1.0);
}