Files
ELY-Browser/crates/ely_servo_host/tests/live_perf_bench/pixels.rs
T

164 lines
4.9 KiB
Rust

use std::{
env,
error::Error,
fs,
io::BufReader,
process::{ChildStdin, ChildStdout},
};
use ely_domain::{ProfileId, TabId};
use super::{
RESPONSE_TIMEOUT, build_ensure, cleanup, read_response_with_bytes, spawn_sidecar, write_request,
};
const SOLID_RED_DATA_URL: &str =
"data:text/html,<body style=\"margin:0;background:%23ff0000;height:4000px\">";
const SOLID_BLUE_DATA_URL: &str =
"data:text/html,<body style=\"margin:0;background:%230000ff;height:4000px\">";
#[test]
#[ignore = "drives a real sidecar via stdin/stdout; takes a few seconds"]
fn red_data_url_yields_red_rgba() -> Result<(), Box<dyn Error>> {
assert_solid_color_renders("software", SOLID_RED_DATA_URL, ColorTarget::Red)
}
#[test]
#[ignore = "drives a real sidecar via stdin/stdout; takes a few seconds"]
fn blue_data_url_yields_blue_rgba() -> Result<(), Box<dyn Error>> {
assert_solid_color_renders("software", SOLID_BLUE_DATA_URL, ColorTarget::Blue)
}
#[derive(Clone, Copy)]
enum ColorTarget {
Red,
Blue,
}
impl ColorTarget {
fn label(self) -> &'static str {
match self {
ColorTarget::Red => "red",
ColorTarget::Blue => "blue",
}
}
}
fn assert_solid_color_renders(
kind: &str,
url: &str,
target: ColorTarget,
) -> Result<(), Box<dyn Error>> {
let profile_id = ProfileId::new();
let tab = TabId::new();
let profile_data_dir = env::temp_dir().join(format!(
"ely-pixel-{}-{}-{}",
std::process::id(),
target.label(),
profile_id.as_str(),
));
fs::create_dir_all(&profile_data_dir)?;
let mut child = spawn_sidecar(kind, &profile_data_dir)?;
let mut stdin = child.stdin.take().ok_or("sidecar stdin missing")?;
let stdout = child.stdout.take().ok_or("sidecar stdout missing")?;
let mut reader = BufReader::new(stdout);
let outcome = drive_solid_color_render(&mut stdin, &mut reader, &tab, &profile_id, url, target);
drop(stdin);
let _ = child.wait();
cleanup(&profile_data_dir)?;
outcome
}
fn drive_solid_color_render(
stdin: &mut ChildStdin,
reader: &mut BufReader<ChildStdout>,
tab: &TabId,
profile_id: &ProfileId,
url: &str,
target: ColorTarget,
) -> Result<(), Box<dyn Error>> {
let mut bytes = Vec::new();
let mut report = None;
for iteration in 0..30 {
let scroll_y = if iteration == 0 {
0
} else if iteration % 2 == 1 {
1
} else {
-1
};
let request = build_ensure(tab, profile_id, url, 0, scroll_y, false);
write_request(stdin, &request)?;
let (response, response_bytes) = read_response_with_bytes(reader, RESPONSE_TIMEOUT)?;
if let Some(error) = response.error.as_ref() {
return Err(format!("sidecar error: {error}").into());
}
if let Some(frame_report) = response.frame {
if !response_bytes.is_empty()
&& sample_matches_target(
&response_bytes,
frame_report.width,
frame_report.height,
target,
)
{
report = Some(frame_report);
bytes = response_bytes;
break;
}
if !response_bytes.is_empty() {
bytes = response_bytes;
report = Some(frame_report);
}
}
}
let report = report.ok_or("never received a frame with bytes")?;
let width = report.width as usize;
let height = report.height as usize;
assert_eq!(bytes.len(), width * height * 4, "rgba byte count must match width * height * 4",);
let mut samples = Vec::new();
for fy in [1, 2, 3] {
for fx in [1, 2, 3] {
let x = width * fx / 4;
let y = height * fy / 4;
let idx = (y * width + x) * 4;
samples.push((x, y, bytes[idx], bytes[idx + 1], bytes[idx + 2], bytes[idx + 3]));
}
}
eprintln!("[pixel sample {}] {:?}", target.label(), samples);
let hits =
samples.iter().filter(|(_x, _y, r, g, b, _a)| matches_color(*r, *g, *b, target)).count();
assert!(
hits >= 5,
"expected at least 5/9 center-quadrant pixels to be {} after rendering {}; got samples {:?}",
target.label(),
url,
samples,
);
Ok(())
}
fn sample_matches_target(bytes: &[u8], width: u32, height: u32, target: ColorTarget) -> bool {
let w = width as usize;
let h = height as usize;
if bytes.len() < w * h * 4 || w == 0 || h == 0 {
return false;
}
let cx = w / 2;
let cy = h / 2;
let idx = (cy * w + cx) * 4;
matches_color(bytes[idx], bytes[idx + 1], bytes[idx + 2], target)
}
fn matches_color(r: u8, g: u8, b: u8, target: ColorTarget) -> bool {
match target {
ColorTarget::Red => r >= 200 && g <= 60 && b <= 60,
ColorTarget::Blue => r <= 60 && g <= 60 && b >= 200,
}
}