diff --git a/desktop/src/render/state.rs b/desktop/src/render/state.rs index 46a919b8b5..04f4bafc28 100644 --- a/desktop/src/render/state.rs +++ b/desktop/src/render/state.rs @@ -1,6 +1,7 @@ use crate::window::Window; use crate::wrapper::{Color, WgpuContext, WgpuExecutor}; +use wgpu_executor::TargetTexture; #[derive(derivative::Derivative)] #[derivative(Debug)] @@ -17,7 +18,7 @@ pub(crate) struct RenderState { viewport_scale: [f32; 2], viewport_offset: [f32; 2], viewport_texture: Option, - overlays_texture: Option, + overlays_target_texture: Option, ui_texture: Option, bind_group: Option, #[derivative(Debug = "ignore")] @@ -181,7 +182,7 @@ impl RenderState { viewport_scale: [1.0, 1.0], viewport_offset: [0.0, 0.0], viewport_texture: None, - overlays_texture: None, + overlays_target_texture: None, ui_texture: None, bind_group: None, overlays_scene: None, @@ -208,11 +209,6 @@ impl RenderState { self.update_bindgroup(); } - pub(crate) fn bind_overlays_texture(&mut self, overlays_texture: wgpu::Texture) { - self.overlays_texture = Some(overlays_texture); - self.update_bindgroup(); - } - pub(crate) fn bind_ui_texture(&mut self, bind_ui_texture: wgpu::Texture) { self.ui_texture = Some(bind_ui_texture); self.update_bindgroup(); @@ -236,12 +232,15 @@ impl RenderState { return; }; let size = glam::UVec2::new(viewport_texture.width(), viewport_texture.height()); - let texture = futures::executor::block_on(self.executor.render_vello_scene_to_texture(&scene, size, &Default::default(), Color::TRANSPARENT)); - let Ok(texture) = texture else { - tracing::error!("Error rendering overlays"); + let result = futures::executor::block_on( + self.executor + .render_vello_scene_to_target_texture(&scene, size, &Default::default(), Color::TRANSPARENT, &mut self.overlays_target_texture), + ); + if let Err(e) = result { + tracing::error!("Error rendering overlays: {:?}", e); return; - }; - self.bind_overlays_texture(texture); + } + self.update_bindgroup(); } pub(crate) fn render(&mut self, window: &Window) -> Result<(), RenderError> { @@ -312,7 +311,11 @@ impl RenderState { fn update_bindgroup(&mut self) { let viewport_texture_view = self.viewport_texture.as_ref().unwrap_or(&self.transparent_texture).create_view(&wgpu::TextureViewDescriptor::default()); - let overlays_texture_view = self.overlays_texture.as_ref().unwrap_or(&self.transparent_texture).create_view(&wgpu::TextureViewDescriptor::default()); + let overlays_texture_view = self + .overlays_target_texture + .as_ref() + .map(|target| target.view()) + .unwrap_or_else(|| &self.transparent_texture.create_view(&wgpu::TextureViewDescriptor::default())); let ui_texture_view = self.ui_texture.as_ref().unwrap_or(&self.transparent_texture).create_view(&wgpu::TextureViewDescriptor::default()); let bind_group = self.context.device.create_bind_group(&wgpu::BindGroupDescriptor { diff --git a/node-graph/libraries/wgpu-executor/src/lib.rs b/node-graph/libraries/wgpu-executor/src/lib.rs index 868c73f60e..ffa4cb154d 100644 --- a/node-graph/libraries/wgpu-executor/src/lib.rs +++ b/node-graph/libraries/wgpu-executor/src/lib.rs @@ -54,6 +54,47 @@ pub struct TargetTexture { size: UVec2, } +impl TargetTexture { + /// Ensures the texture has the specified size, creating a new one if needed. + /// This allows reusing the same texture across frames when the size hasn't changed. + pub fn ensure_size(&mut self, device: &wgpu::Device, size: UVec2) { + let size = size.max(UVec2::ONE); + if self.size == size { + return; + } + + let texture = device.create_texture(&wgpu::TextureDescriptor { + label: None, + size: wgpu::Extent3d { + width: size.x, + height: size.y, + depth_or_array_layers: 1, + }, + mip_level_count: 1, + sample_count: 1, + dimension: wgpu::TextureDimension::D2, + usage: wgpu::TextureUsages::STORAGE_BINDING | wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_SRC, + format: VELLO_SURFACE_FORMAT, + view_formats: &[], + }); + let view = texture.create_view(&wgpu::TextureViewDescriptor::default()); + + self.texture = texture; + self.view = view; + self.size = size; + } + + /// Returns a reference to the texture view for rendering. + pub fn view(&self) -> &wgpu::TextureView { + &self.view + } + + /// Returns a reference to the underlying texture. + pub fn texture(&self) -> &wgpu::Texture { + &self.texture + } +} + #[cfg(target_family = "wasm")] pub type Window = web_sys::HtmlCanvasElement; #[cfg(not(target_family = "wasm"))] @@ -71,19 +112,14 @@ impl WgpuExecutor { self.render_vello_scene_to_target_texture(scene, size, context, background, &mut output).await?; Ok(output.unwrap().texture) } - - async fn render_vello_scene_to_target_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Color, output: &mut Option) -> Result<()> { - let size = size.max(UVec2::ONE); - let target_texture = if let Some(target_texture) = output - && target_texture.size == size - { - target_texture - } else { + pub async fn render_vello_scene_to_target_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Color, output: &mut Option) -> Result<()> { + // Initialize with a minimal texture if this is the first call + if output.is_none() { let texture = self.context.device.create_texture(&wgpu::TextureDescriptor { label: None, size: wgpu::Extent3d { - width: size.x, - height: size.y, + width: 1, + height: 1, depth_or_array_layers: 1, }, mip_level_count: 1, @@ -94,9 +130,11 @@ impl WgpuExecutor { view_formats: &[], }); let view = texture.create_view(&wgpu::TextureViewDescriptor::default()); - *output = Some(TargetTexture { texture, view, size }); - output.as_mut().unwrap() - }; + *output = Some(TargetTexture { texture, view, size: UVec2::ONE }); + } + + let target_texture = output.as_mut().unwrap(); + target_texture.ensure_size(&self.context.device, size); let [r, g, b, a] = background.to_rgba8_srgb(); let render_params = RenderParams { @@ -117,7 +155,7 @@ impl WgpuExecutor { }; renderer.override_image(&image_brush.image, Some(texture_view)); } - renderer.render_to_texture(&self.context.device, &self.context.queue, scene, &target_texture.view, &render_params)?; + renderer.render_to_texture(&self.context.device, &self.context.queue, scene, target_texture.view(), &render_params)?; for (image_brush, _) in context.resource_overrides.iter() { renderer.override_image(&image_brush.image, None); }