Initial profiling support for Iced.

wgpu/src/backend.rs

@@ -10,6 +10,9 @@ use iced_graphics::{Primitive, Viewport};
 use iced_native::alignment;
 use iced_native::{Font, Size};
 
+#[cfg(feature = "trace")]
+use iced_profiling::info_span;
+
 #[cfg(any(feature = "image", feature = "svg"))]
 use crate::image;
 
@@ -77,6 +80,8 @@ impl Backend {
         overlay_text: &[T],
     ) {
         log::debug!("Drawing");
+        #[cfg(feature = "trace")]
+        let _ = info_span!("Wgpu::Backend", "PRESENT").entered();
 
         let target_size = viewport.physical_size();
         let scale_factor = viewport.scale_factor() as f32;

wgpu/src/image.rs

@@ -23,6 +23,9 @@ use iced_native::image;
 #[cfg(feature = "svg")]
 use iced_native::svg;
 
+#[cfg(feature = "trace")]
+use iced_profiling::info_span;
+
 #[derive(Debug)]
 pub struct Pipeline {
     #[cfg(feature = "image")]
@@ -289,6 +292,9 @@ impl Pipeline {
         target: &wgpu::TextureView,
         _scale: f32,
     ) {
+        #[cfg(feature = "trace")]
+        let _ = info_span!("Wgpu::Image", "DRAW").entered();
+
         let instances: &mut Vec<Instance> = &mut Vec::new();
 
         #[cfg(feature = "image")]

wgpu/src/quad.rs

@@ -6,6 +6,9 @@ use bytemuck::{Pod, Zeroable};
 use std::mem;
 use wgpu::util::DeviceExt;
 
+#[cfg(feature = "trace")]
+use iced_profiling::info_span;
+
 #[derive(Debug)]
 pub struct Pipeline {
     pipeline: wgpu::RenderPipeline,
@@ -173,6 +176,9 @@ impl Pipeline {
         bounds: Rectangle<u32>,
         target: &wgpu::TextureView,
     ) {
+        #[cfg(feature = "trace")]
+        let _ = info_span!("Wgpu::Quad", "DRAW").entered();
+
         let uniforms = Uniforms::new(transformation, scale);
 
         {
@@ -207,6 +213,9 @@ impl Pipeline {
 
             instance_buffer.copy_from_slice(instance_bytes);
 
+            #[cfg(feature = "trace")]
+            let _ = info_span!("Wgpu::Quad", "BEGIN_RENDER_PASS").enter();
+
             {
                 let mut render_pass =
                     encoder.begin_render_pass(&wgpu::RenderPassDescriptor {

wgpu/src/triangle.rs

@@ -8,6 +8,8 @@ use crate::Transformation;
 use iced_graphics::layer::mesh::{self, Mesh};
 use iced_graphics::triangle::ColoredVertex2D;
 use iced_graphics::Size;
+#[cfg(feature = "trace")]
+use iced_profiling::info_span;
 
 #[derive(Debug)]
 pub struct Pipeline {
@@ -53,6 +55,9 @@ impl Pipeline {
         scale_factor: f32,
         meshes: &[Mesh<'_>],
     ) {
+        #[cfg(feature = "trace")]
+        let _ = info_span!("Wgpu::Triangle", "DRAW").entered();
+
         // Count the total amount of vertices & indices we need to handle
         let count = mesh::attribute_count_of(meshes);
 
@@ -247,6 +252,9 @@ impl Pipeline {
                 (target, None, wgpu::LoadOp::Load)
             };
 
+            #[cfg(feature = "trace")]
+            let _ = info_span!("Wgpu::Triangle", "BEGIN_RENDER_PASS").enter();
+
             let mut render_pass =
                 encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
                     label: Some("iced_wgpu::triangle render pass"),