在 gnome 扩展中截屏时删除弹出窗口和声音
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当在 gnome 扩展中通过 captureScreenshot 函数进行截图时，会弹出一个窗口，并播放典型的拍照声音。extension.js:import {Extension} from 'reso...
在gnome扩展中截取屏幕截图时 captureScreenshot ，会弹出一个窗口，并播放典型的拍照声音。
扩展.js：
import {Extension} from 'resource:///org/gnome/shell/extensions/extension.js';
import * as Screenshot from 'resource:///org/gnome/shell/ui/screenshot.js';
import Shell from 'gi://Shell';
export default class ExampleExtension extends Extension {
async enable() {
const shooter = new Shell.Screenshot();
const [content] = await shooter.screenshot_stage_to_content();
const texture = content.get_texture();
await Screenshot.captureScreenshot(texture, null, 1, null);
}
disable() {
}
}
弹出窗口：
如何安静地截取屏幕截图，不弹出窗口，不发出声音？例如，当外部应用程序通过 dbus API https://gitlab.gnome.org/GNOME/xdg-desktop-portal-gnome/-/blob/main/data/org.gnome.Shell.Screenshot.xml#L46 。在这种情况下，屏幕截图只是悄悄地添加到磁盘中，仅此而已。
Ubuntu 24.04，GNOME 46，Wayland
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引用 3楼为了在我的 Unity 游戏中创建爆炸，我将 3 个运行时配置的粒子系统集中起来，并将停止操作设置为禁用（这样我就可以将所有禁用的粒子对象集中起来）；我做了类似的事情：p...
为了在我的 Unity 游戏中创建爆炸，我将 3 个运行时配置的粒子系统池化，并将停止操作设置为禁用（这样我就可以将所有禁用的粒子对象池化）；
我做了这样的事情：
public void CreateExplosions() { Pool_Particle_Simple(position, rotation, 8); Pool_Particle_Simple(position, rotation, 9); Pool_Particle_Simple(position, rotation, 10); } public PoolableParticle GetAvailabe_PoolParticle(PoolableParticle[] particles, int start, int end) { for (int i = start; i < end; i++) { PoolableParticle particle = particles[i]; switch (particle.gameObject.activeInHierarchy) { case false: particles[i].gameObject.SetActive(true); return particles[i]; } } return null; } public void Pool_Particle_Simple(Vector3 position, Quaternion rotation, ushort type) { PoolableParticle particle = GetAvailabe_PoolParticle(poolableParticles, 0, poolableParticles.Length); switch (ReferenceEquals(particle, null)) { case false: ParticleSystem particleSystem = particle.ParticleSystem; SetupParticle(particleSystem, particle.ParticleSystemRenderer, type); particleSystem.transform.position = position; particle.transform.rotation = rotation; particleSystem.Play(); break; } } public void SetupParticle(ParticleSystem particleSystem, ParticleSystemRenderer renderer, int type)//0 = Smoke01, 1 = Smoke02, ... { switch (type) { case 0://Smoke01 ParticleSystem.MainModule main = particleSystem.main; main.duration = 5; main.loop = false; main.prewarm = true; main.startDelay = 0; main.startLifetime = new ParticleSystem.MinMaxCurve(4, 6); main.startSpeed = new ParticleSystem.MinMaxCurve(.5f, 1f); main.startSize3D = false; main.startSize = 55; main.startRotation = 0; main.flipRotation = 1; main.startColor = Color.white; main.gravityModifier = 0; main.simulationSpace = ParticleSystemSimulationSpace.World; main.simulationSpeed = 1; main.scalingMode = ParticleSystemScalingMode.Local; main.emitterVelocityMode = ParticleSystemEmitterVelocityMode.Rigidbody; main.maxParticles = 15; main.cullingMode = ParticleSystemCullingMode.AlwaysSimulate; main.ringBufferMode = ParticleSystemRingBufferMode.Disabled; ParticleSystem.EmissionModule emission = particleSystem.emission; emission.rateOverTime = 3; emission.rateOverDistance = 0; emission.burstCount = 0; ParticleSystem.VelocityOverLifetimeModule velocity = particleSystem.velocityOverLifetime; velocity.enabled = false; ParticleSystem.LimitVelocityOverLifetimeModule limitVelocity = particleSystem.limitVelocityOverLifetime; limitVelocity.enabled = false; ParticleSystem.ShapeModule shape = particleSystem.shape; shape.enabled = true; shape.shapeType = ParticleSystemShapeType.Cone; shape.angle = 25; shape.radius = 0.3822865f; shape.radiusThickness = 1; shape.arc = 360; shape.arcMode = ParticleSystemShapeMultiModeValue.Random; shape.arcSpread = 0; shape.length = 5; shape.position = Vector3.zero; shape.rotation = Vector3.zero; shape.scale = Vector3.one; shape.alignToDirection = false; shape.randomDirectionAmount = 1; shape.sphericalDirectionAmount = 0; shape.randomPositionAmount = 0; ParticleSystem.ForceOverLifetimeModule force = particleSystem.forceOverLifetime; force.enabled = false; ParticleSystem.ColorOverLifetimeModule color = particleSystem.colorOverLifetime; color.enabled = true; Gradient gradient = new Gradient(); gradient.mode = GradientMode.Blend; GradientColorKey[] colorKeys = new GradientColorKey[2]; colorKeys[0] = new GradientColorKey(Color.white, 0f); colorKeys[1] = new GradientColorKey(Color.white, 1f); GradientAlphaKey[] alphaKeys = new GradientAlphaKey[4]; alphaKeys[0] = new GradientAlphaKey(0.12f, 0); alphaKeys[1] = new GradientAlphaKey(.45f, 0.27f); alphaKeys[2] = new GradientAlphaKey(.70f, .805f); alphaKeys[3] = new GradientAlphaKey(0f, 1f); gradient.SetKeys(colorKeys, alphaKeys); color.color = gradient; ParticleSystem.SizeOverLifetimeModule size = particleSystem.sizeOverLifetime; size.separateAxes = false; size.size = new ParticleSystem.MinMaxCurve(0, 1); ParticleSystem.RotationOverLifetimeModule rotation = particleSystem.rotationOverLifetime; rotation.enabled = true; rotation.separateAxes = false; rotation.z = .45f; ParticleSystem.SubEmittersModule subEmitters = particleSystem.subEmitters; subEmitters.enabled = false; ParticleSystem.NoiseModule noise = particleSystem.noise; noise.enabled = false; ParticleSystem.TrailModule trails = particleSystem.trails; trails.enabled = false; renderer.renderMode = ParticleSystemRenderMode.Mesh; renderer.meshDistribution = ParticleSystemMeshDistribution.UniformRandom; renderer.sortMode = ParticleSystemSortMode.None; renderer.sortingFudge = 0; renderer.alignment = ParticleSystemRenderSpace.Local; renderer.flip = Vector3.zero; renderer.enableGPUInstancing = false; renderer.pivot = Vector3.zero; renderer.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off; renderer.sortingLayerID = 0; renderer.lightProbeUsage = UnityEngine.Rendering.LightProbeUsage.BlendProbes; renderer.probeAnchor = null; break; case 8://Small Explosion (base) main = particleSystem.main; main.duration = 2f; main.loop = false; main.prewarm = false; main.startDelay = 0f; main.startLifetime = new ParticleSystem.MinMaxCurve(.75f, 1f); main.startSpeed = 0; main.startSize3D = false; main.startSize = new ParticleSystem.MinMaxCurve(1f, 2f); main.startRotation = new ParticleSystem.MinMaxCurve(0, 360); main.flipRotation = 0; main.startColor = Color.white; main.gravityModifier = 0; main.simulationSpace = ParticleSystemSimulationSpace.Local; main.simulationSpeed = 1; main.scalingMode = ParticleSystemScalingMode.Local; main.emitterVelocityMode = ParticleSystemEmitterVelocityMode.Transform; main.maxParticles = 1000; main.cullingMode = ParticleSystemCullingMode.AlwaysSimulate; main.ringBufferMode = ParticleSystemRingBufferMode.Disabled; emission = particleSystem.emission; emission.rateOverTime = 0; emission.rateOverDistance = 0; ParticleSystem.Burst[] bursts = new ParticleSystem.Burst[1]; bursts[0] = new ParticleSystem.Burst(0f, (short)5, (short)5, 1, 0.050f); emission.SetBursts(bursts); shape = particleSystem.shape; shape.enabled = true; shape.shapeType = ParticleSystemShapeType.Sphere; shape.radius = 0.2442369f; shape.radiusThickness = 1; shape.arc = 360; shape.arcMode = ParticleSystemShapeMultiModeValue.Random; shape.arcSpread = 0; shape.position = Vector3.zero; shape.rotation = Vector3.zero; shape.scale = Vector3.one; shape.alignToDirection = false; shape.randomDirectionAmount = 0; shape.randomPositionAmount = 0; shape.sphericalDirectionAmount = 0; velocity = particleSystem.velocityOverLifetime; velocity.space = ParticleSystemSimulationSpace.Local; velocity.enabled = true; velocity.xMultiplier = 0; velocity.orbitalX = 0; velocity.orbitalOffsetX = 0; velocity.yMultiplier = 0; velocity.orbitalY = 0; velocity.orbitalOffsetY = 0; velocity.zMultiplier = 0; velocity.orbitalZ = 0; velocity.orbitalOffsetZ = 0; velocity.radial = new ParticleSystem.MinMaxCurve(0f, 2f); velocity.speedModifier = 1; force = particleSystem.forceOverLifetime; force.enabled = false; limitVelocity = particleSystem.limitVelocityOverLifetime; limitVelocity.enabled = false; color = particleSystem.colorOverLifetime; color.enabled = true; gradient = new Gradient(); gradient.mode = GradientMode.Blend; colorKeys = new GradientColorKey[3]; colorKeys[0] = new GradientColorKey(Color.white, .019f); colorKeys[1] = new GradientColorKey(Color.black, .036f); colorKeys[2] = new GradientColorKey(Color.black, .694f); alphaKeys = new GradientAlphaKey[3]; alphaKeys[0] = new GradientAlphaKey(1f, 0); alphaKeys[1] = new GradientAlphaKey(1f, 0.688f); alphaKeys[2] = new GradientAlphaKey(0f, 1f); gradient.SetKeys(colorKeys, alphaKeys); color.color = gradient; size = particleSystem.sizeOverLifetime; size.separateAxes = false; size.size = new ParticleSystem.MinMaxCurve(1, 2); rotation = particleSystem.rotationOverLifetime; rotation.enabled = false; subEmitters = particleSystem.subEmitters; subEmitters.enabled = false; noise = particleSystem.noise; noise.enabled = false; trails = particleSystem.trails; trails.enabled = false; renderer.renderMode = ParticleSystemRenderMode.Billboard; renderer.normalDirection = 1; renderer.sortMode = ParticleSystemSortMode.Distance; renderer.sortingFudge = 0; renderer.minParticleSize = 0; renderer.maxParticleSize = 5f; renderer.alignment = ParticleSystemRenderSpace.View; renderer.flip = new Vector3(.5f, .5f, 0); renderer.allowRoll = true; renderer.pivot = Vector3.zero; renderer.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off; renderer.shadowBias = 0; renderer.sortingLayerID = 0; renderer.sortingOrder = 0; renderer.lightProbeUsage = UnityEngine.Rendering.LightProbeUsage.Off; break; case 9://Small Explosion (additional smoke) main = particleSystem.main; main.duration = 2f; main.loop = false; main.prewarm = false; main.startDelay = 0f; main.startLifetime = new ParticleSystem.MinMaxCurve(1.5f, 1.2f); main.startSpeed = 0; main.startSize3D = false; main.startSize = new ParticleSystem.MinMaxCurve(1.5f, 1f); main.startRotation = new ParticleSystem.MinMaxCurve(0, 360); main.flipRotation = 0; main.startColor = Color.white; main.gravityModifier = 0; main.simulationSpace = ParticleSystemSimulationSpace.Local; main.simulationSpeed = 1; main.scalingMode = ParticleSystemScalingMode.Local; main.emitterVelocityMode = ParticleSystemEmitterVelocityMode.Transform; main.maxParticles = 1000; main.cullingMode = ParticleSystemCullingMode.AlwaysSimulate; main.ringBufferMode = ParticleSystemRingBufferMode.Disabled; emission = particleSystem.emission; emission.rateOverTime = 0; emission.rateOverDistance = 0; bursts = new ParticleSystem.Burst[1]; bursts[0] = new ParticleSystem.Burst(0f, (short)10, (short)10, 1, 0.100f); emission.SetBursts(bursts); shape = particleSystem.shape; shape.enabled = true; shape.shapeType = ParticleSystemShapeType.Sphere; shape.radius = 0.3957672f; shape.radiusThickness = 0; shape.arc = 360; shape.arcMode = ParticleSystemShapeMultiModeValue.Random; shape.arcSpread = 0; shape.position = Vector3.zero; shape.rotation = Vector3.zero; shape.scale = Vector3.one; shape.alignToDirection = false; shape.randomDirectionAmount = 0; shape.randomPositionAmount = 0; shape.sphericalDirectionAmount = 0; velocity = particleSystem.velocityOverLifetime; velocity.enabled = true; velocity.xMultiplier = 0; velocity.orbitalX = 0; velocity.orbitalOffsetX = 0; velocity.yMultiplier = 2; velocity.orbitalY = 0; velocity.orbitalOffsetY = 0; velocity.zMultiplier = 0; velocity.orbitalZ = 0; velocity.orbitalOffsetZ = 0; velocity.radial = new ParticleSystem.MinMaxCurve(0f, 1f); velocity.speedModifier = 1; force = particleSystem.forceOverLifetime; force.enabled = false; limitVelocity = particleSystem.limitVelocityOverLifetime; limitVelocity.enabled = false; color = particleSystem.colorOverLifetime; color.enabled = true; gradient = new Gradient(); gradient.mode = GradientMode.Blend; colorKeys = new GradientColorKey[2]; colorKeys[0] = new GradientColorKey(new Color(255, 107, 1), 0f); colorKeys[1] = new GradientColorKey(new Color(41, 41, 41), .341f); alphaKeys = new GradientAlphaKey[4]; alphaKeys[0] = new GradientAlphaKey(0f, 0.01f); alphaKeys[1] = new GradientAlphaKey(.5f, 0.247f); alphaKeys[2] = new GradientAlphaKey(1f, .618f); alphaKeys[3] = new GradientAlphaKey(0f, 1f); gradient.SetKeys(colorKeys, alphaKeys); color.color = gradient; size = particleSystem.sizeOverLifetime; size.separateAxes = false; size.size = new ParticleSystem.MinMaxCurve(1, 2); rotation = particleSystem.rotationOverLifetime; rotation.enabled = false; subEmitters = particleSystem.subEmitters; subEmitters.enabled = false; noise = particleSystem.noise; noise.enabled = false; trails = particleSystem.trails; trails.enabled = false; renderer.renderMode = ParticleSystemRenderMode.Billboard; renderer.normalDirection = 1; renderer.sortMode = ParticleSystemSortMode.Distance; renderer.sortingFudge = 0; renderer.minParticleSize = 0; renderer.maxParticleSize = 5f; renderer.alignment = ParticleSystemRenderSpace.View; renderer.flip = new Vector3(.5f, .5f, 0); renderer.allowRoll = true; renderer.pivot = Vector3.zero; renderer.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off; renderer.shadowBias = 0; renderer.sortingLayerID = 0; renderer.sortingOrder = 1; renderer.lightProbeUsage = UnityEngine.Rendering.LightProbeUsage.Off; break; case 10://Small Explosion (shockWave) main = particleSystem.main; main.duration = 2f; main.loop = false; main.prewarm = false; main.startDelay = 0f; main.startLifetime = .5f; main.startSpeed = 0; main.startSize3D = false; main.startSize = 10; main.startRotation = 0; main.flipRotation = 0; main.startColor = Color.white; main.gravityModifier = 0; main.simulationSpace = ParticleSystemSimulationSpace.Local; main.simulationSpeed = 1; main.scalingMode = ParticleSystemScalingMode.Local; main.emitterVelocityMode = ParticleSystemEmitterVelocityMode.Transform; main.maxParticles = 1000; main.cullingMode = ParticleSystemCullingMode.AlwaysSimulate; main.ringBufferMode = ParticleSystemRingBufferMode.Disabled; emission = particleSystem.emission; emission.rateOverTime = 0; emission.rateOverDistance = 0; bursts = new ParticleSystem.Burst[1]; bursts[0] = new ParticleSystem.Burst(0f, (short)1, (short)1, 1, 0.010f); emission.SetBursts(bursts); shape = particleSystem.shape; shape.enabled = false; velocity = particleSystem.velocityOverLifetime; velocity.enabled = false; force = particleSystem.forceOverLifetime; force.enabled = false; limitVelocity = particleSystem.limitVelocityOverLifetime; limitVelocity.enabled = false; color = particleSystem.colorOverLifetime; color.enabled = true; gradient = new Gradient(); gradient.mode = GradientMode.Blend; colorKeys = new GradientColorKey[2]; colorKeys[0] = new GradientColorKey(Color.white, 0f); colorKeys[1] = new GradientColorKey(Color.white, 1f); alphaKeys = new GradientAlphaKey[2]; alphaKeys[0] = new GradientAlphaKey(1f, 0f); alphaKeys[1] = new GradientAlphaKey(0f, 1f); gradient.SetKeys(colorKeys, alphaKeys); color.color = gradient; size = particleSystem.sizeOverLifetime; size.separateAxes = false; size.size = new ParticleSystem.MinMaxCurve(0, 1);//Forse no rotation = particleSystem.rotationOverLifetime; rotation.enabled = false; subEmitters = particleSystem.subEmitters; subEmitters.enabled = false; noise = particleSystem.noise; noise.enabled = false; trails = particleSystem.trails; trails.enabled = false; renderer.renderMode = ParticleSystemRenderMode.Billboard; renderer.normalDirection = 1; renderer.sortMode = ParticleSystemSortMode.None; renderer.sortingFudge = 0; renderer.minParticleSize = 0; renderer.maxParticleSize = 20f; renderer.alignment = ParticleSystemRenderSpace.View; renderer.flip = Vector3.zero; renderer.allowRoll = true; renderer.pivot = Vector3.zero; renderer.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off; renderer.shadowBias = 0; renderer.sortingLayerID = 0; renderer.sortingOrder = 1; renderer.lightProbeUsage = UnityEngine.Rendering.LightProbeUsage.Off; break; //..... }问题是，有时我会得到像图片右侧那样的伪像，请 在此处输入图片说明 。相反，我希望得到像左侧那样的结果。通过查看检查器，两个校正粒子分子看起来相等，但正如您所见，结果非常不同（伪像非常大，颜色和形状错误）。什么可能导致该故障？
