mirror of
https://github.com/italicsjenga/vello.git
synced 2025-01-10 20:51:29 +11:00
05e81acebc
Separate out render context upload from renderer creation. Upload ramps to GPU buffer. Encode gradients to scene description. Fix a number of bugs in uploading and processing. This renders gradients in a test image, but has some shortcomings. For one, staging buffers need to be applied for a couple things (they're just host mapped for now). Also, the interaction between sRGB and premultiplied alpha isn't quite right. The size of the gradient ramp buffer is fixed and should be dynamic. And of course there's always more optimization to be done, including making the upload of gradient ramps more incremental, and probably hashing of the stops instead of the processed ramps.
301 lines
12 KiB
Rust
301 lines
12 KiB
Rust
use std::fs::File;
|
|
use std::io::BufWriter;
|
|
use std::path::Path;
|
|
|
|
use clap::{App, Arg};
|
|
|
|
use piet_gpu_hal::{BufferUsage, Error, Instance, Session};
|
|
|
|
use piet_gpu::{render_scene, render_svg, PietGpuRenderContext, Renderer, HEIGHT, WIDTH};
|
|
|
|
#[allow(unused)]
|
|
fn dump_scene(buf: &[u8]) {
|
|
for i in 0..(buf.len() / 4) {
|
|
let mut buf_u32 = [0u8; 4];
|
|
buf_u32.copy_from_slice(&buf[i * 4..i * 4 + 4]);
|
|
println!("{:4x}: {:8x}", i * 4, u32::from_le_bytes(buf_u32));
|
|
}
|
|
}
|
|
|
|
#[allow(unused)]
|
|
fn dump_state(buf: &[u8]) {
|
|
for i in 0..(buf.len() / 48) {
|
|
let j = i * 48;
|
|
let floats = (0..11)
|
|
.map(|k| {
|
|
let mut buf_f32 = [0u8; 4];
|
|
buf_f32.copy_from_slice(&buf[j + k * 4..j + k * 4 + 4]);
|
|
f32::from_le_bytes(buf_f32)
|
|
})
|
|
.collect::<Vec<_>>();
|
|
println!(
|
|
"{}: [{} {} {} {} {} {}] ({}, {})-({} {}) {} {}",
|
|
i,
|
|
floats[0],
|
|
floats[1],
|
|
floats[2],
|
|
floats[3],
|
|
floats[4],
|
|
floats[5],
|
|
floats[6],
|
|
floats[7],
|
|
floats[8],
|
|
floats[9],
|
|
floats[10],
|
|
buf[j + 44]
|
|
);
|
|
}
|
|
}
|
|
|
|
/// Interpret the output of the binning stage, for diagnostic purposes.
|
|
#[allow(unused)]
|
|
fn trace_merge(buf: &[u32]) {
|
|
for bin in 0..256 {
|
|
println!("bin {}:", bin);
|
|
let mut starts = (0..16)
|
|
.map(|i| Some((bin * 16 + i) * 64))
|
|
.collect::<Vec<Option<usize>>>();
|
|
loop {
|
|
let min_start = starts
|
|
.iter()
|
|
.map(|st| {
|
|
st.map(|st| {
|
|
if buf[st / 4] == 0 {
|
|
!0
|
|
} else {
|
|
buf[st / 4 + 2]
|
|
}
|
|
})
|
|
.unwrap_or(!0)
|
|
})
|
|
.min()
|
|
.unwrap();
|
|
if min_start == !0 {
|
|
break;
|
|
}
|
|
let mut selected = !0;
|
|
for i in 0..16 {
|
|
if let Some(st) = starts[i] {
|
|
if buf[st / 4] != 0 && buf[st / 4 + 2] == min_start {
|
|
selected = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
let st = starts[selected].unwrap();
|
|
println!("selected {}, start {:x}", selected, st);
|
|
for j in 0..buf[st / 4] {
|
|
println!("{:x}", buf[st / 4 + 2 + j as usize])
|
|
}
|
|
if buf[st / 4 + 1] == 0 {
|
|
starts[selected] = None;
|
|
} else {
|
|
starts[selected] = Some(buf[st / 4 + 1] as usize);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Interpret the output of the coarse raster stage, for diagnostic purposes.
|
|
#[allow(unused)]
|
|
fn trace_ptcl(buf: &[u32]) {
|
|
for y in 0..96 {
|
|
for x in 0..128 {
|
|
let tile_ix = y * 128 + x;
|
|
println!("tile {} @({}, {})", tile_ix, x, y);
|
|
let mut tile_offset = tile_ix * 1024;
|
|
loop {
|
|
let tag = buf[tile_offset / 4];
|
|
match tag {
|
|
0 => break,
|
|
3 => {
|
|
let backdrop = buf[tile_offset / 4 + 2];
|
|
let rgba_color = buf[tile_offset / 4 + 3];
|
|
println!(" {:x}: fill {:x} {}", tile_offset, rgba_color, backdrop);
|
|
let mut seg_chunk = buf[tile_offset / 4 + 1] as usize;
|
|
let n = buf[seg_chunk / 4] as usize;
|
|
let segs = buf[seg_chunk / 4 + 2] as usize;
|
|
println!(" chunk @{:x}: n={}, segs @{:x}", seg_chunk, n, segs);
|
|
for i in 0..n {
|
|
let x0 = f32::from_bits(buf[segs / 4 + i * 5]);
|
|
let y0 = f32::from_bits(buf[segs / 4 + i * 5 + 1]);
|
|
let x1 = f32::from_bits(buf[segs / 4 + i * 5 + 2]);
|
|
let y1 = f32::from_bits(buf[segs / 4 + i * 5 + 3]);
|
|
let y_edge = f32::from_bits(buf[segs / 4 + i * 5 + 4]);
|
|
println!(
|
|
" ({:.3}, {:.3}) - ({:.3}, {:.3}) | {:.3}",
|
|
x0, y0, x1, y1, y_edge
|
|
);
|
|
}
|
|
loop {
|
|
seg_chunk = buf[seg_chunk / 4 + 1] as usize;
|
|
if seg_chunk == 0 {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
4 => {
|
|
let line_width = f32::from_bits(buf[tile_offset / 4 + 2]);
|
|
let rgba_color = buf[tile_offset / 4 + 3];
|
|
println!(
|
|
" {:x}: stroke {:x} {}",
|
|
tile_offset, rgba_color, line_width
|
|
);
|
|
let mut seg_chunk = buf[tile_offset / 4 + 1] as usize;
|
|
let n = buf[seg_chunk / 4] as usize;
|
|
let segs = buf[seg_chunk / 4 + 2] as usize;
|
|
println!(" chunk @{:x}: n={}, segs @{:x}", seg_chunk, n, segs);
|
|
for i in 0..n {
|
|
let x0 = f32::from_bits(buf[segs / 4 + i * 5]);
|
|
let y0 = f32::from_bits(buf[segs / 4 + i * 5 + 1]);
|
|
let x1 = f32::from_bits(buf[segs / 4 + i * 5 + 2]);
|
|
let y1 = f32::from_bits(buf[segs / 4 + i * 5 + 3]);
|
|
let y_edge = f32::from_bits(buf[segs / 4 + i * 5 + 4]);
|
|
println!(
|
|
" ({:.3}, {:.3}) - ({:.3}, {:.3}) | {:.3}",
|
|
x0, y0, x1, y1, y_edge
|
|
);
|
|
}
|
|
loop {
|
|
seg_chunk = buf[seg_chunk / 4 + 1] as usize;
|
|
if seg_chunk == 0 {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
6 => {
|
|
let backdrop = buf[tile_offset / 4 + 2];
|
|
println!(" {:x}: begin_clip {}", tile_offset, backdrop);
|
|
let mut seg_chunk = buf[tile_offset / 4 + 1] as usize;
|
|
let n = buf[seg_chunk / 4] as usize;
|
|
let segs = buf[seg_chunk / 4 + 2] as usize;
|
|
println!(" chunk @{:x}: n={}, segs @{:x}", seg_chunk, n, segs);
|
|
for i in 0..n {
|
|
let x0 = f32::from_bits(buf[segs / 4 + i * 5]);
|
|
let y0 = f32::from_bits(buf[segs / 4 + i * 5 + 1]);
|
|
let x1 = f32::from_bits(buf[segs / 4 + i * 5 + 2]);
|
|
let y1 = f32::from_bits(buf[segs / 4 + i * 5 + 3]);
|
|
let y_edge = f32::from_bits(buf[segs / 4 + i * 5 + 4]);
|
|
println!(
|
|
" ({:.3}, {:.3}) - ({:.3}, {:.3}) | {:.3}",
|
|
x0, y0, x1, y1, y_edge
|
|
);
|
|
}
|
|
loop {
|
|
seg_chunk = buf[seg_chunk / 4 + 1] as usize;
|
|
if seg_chunk == 0 {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
7 => {
|
|
let backdrop = buf[tile_offset / 4 + 1];
|
|
println!("{:x}: solid_clip {:x}", tile_offset, backdrop);
|
|
}
|
|
8 => {
|
|
println!("{:x}: end_clip", tile_offset);
|
|
}
|
|
_ => {
|
|
println!("{:x}: {}", tile_offset, tag);
|
|
}
|
|
}
|
|
if tag == 0 {
|
|
break;
|
|
}
|
|
if tag == 8 {
|
|
tile_offset = buf[tile_offset / 4 + 1] as usize;
|
|
} else {
|
|
tile_offset += 20;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main() -> Result<(), Error> {
|
|
let matches = App::new("piet-gpu test")
|
|
.arg(Arg::with_name("INPUT").index(1))
|
|
.arg(Arg::with_name("flip").short("f").long("flip"))
|
|
.arg(
|
|
Arg::with_name("scale")
|
|
.short("s")
|
|
.long("scale")
|
|
.takes_value(true),
|
|
)
|
|
.get_matches();
|
|
let (instance, _) = Instance::new(None)?;
|
|
unsafe {
|
|
let device = instance.device(None)?;
|
|
let session = Session::new(device);
|
|
|
|
let mut cmd_buf = session.cmd_buf()?;
|
|
let query_pool = session.create_query_pool(8)?;
|
|
|
|
let mut ctx = PietGpuRenderContext::new();
|
|
if let Some(input) = matches.value_of("INPUT") {
|
|
let mut scale = matches
|
|
.value_of("scale")
|
|
.map(|scale| scale.parse().unwrap())
|
|
.unwrap_or(8.0);
|
|
if matches.is_present("flip") {
|
|
scale = -scale;
|
|
}
|
|
render_svg(&mut ctx, input, scale);
|
|
} else {
|
|
render_scene(&mut ctx);
|
|
}
|
|
|
|
let mut renderer = Renderer::new(&session)?;
|
|
renderer.upload_render_ctx(&mut ctx)?;
|
|
let image_usage = BufferUsage::MAP_READ | BufferUsage::COPY_DST;
|
|
let image_buf = session.create_buffer((WIDTH * HEIGHT * 4) as u64, image_usage)?;
|
|
|
|
cmd_buf.begin();
|
|
renderer.record(&mut cmd_buf, &query_pool);
|
|
cmd_buf.copy_image_to_buffer(&renderer.image_dev, &image_buf);
|
|
cmd_buf.host_barrier();
|
|
cmd_buf.finish();
|
|
let start = std::time::Instant::now();
|
|
let submitted = session.run_cmd_buf(cmd_buf, &[], &[])?;
|
|
submitted.wait()?;
|
|
println!("elapsed = {:?}", start.elapsed());
|
|
let ts = session.fetch_query_pool(&query_pool).unwrap();
|
|
println!("Element kernel time: {:.3}ms", ts[0] * 1e3);
|
|
println!(
|
|
"Tile allocation kernel time: {:.3}ms",
|
|
(ts[1] - ts[0]) * 1e3
|
|
);
|
|
println!("Coarse path kernel time: {:.3}ms", (ts[2] - ts[1]) * 1e3);
|
|
println!("Backdrop kernel time: {:.3}ms", (ts[3] - ts[2]) * 1e3);
|
|
println!("Binning kernel time: {:.3}ms", (ts[4] - ts[3]) * 1e3);
|
|
println!("Coarse raster kernel time: {:.3}ms", (ts[5] - ts[4]) * 1e3);
|
|
println!("Render kernel time: {:.3}ms", (ts[6] - ts[5]) * 1e3);
|
|
|
|
/*
|
|
let mut data: Vec<u32> = Default::default();
|
|
renderer.tile_buf.read(&mut data).unwrap();
|
|
piet_gpu::dump_k1_data(&data);
|
|
trace_ptcl(&data);
|
|
*/
|
|
|
|
let mut img_data: Vec<u8> = Default::default();
|
|
// Note: because png can use a `&[u8]` slice, we could avoid an extra copy
|
|
// (probably passing a slice into a closure). But for now: keep it simple.
|
|
image_buf.read(&mut img_data).unwrap();
|
|
|
|
// Write image as PNG file.
|
|
let path = Path::new("image.png");
|
|
let file = File::create(path).unwrap();
|
|
let ref mut w = BufWriter::new(file);
|
|
|
|
let mut encoder = png::Encoder::new(w, WIDTH as u32, HEIGHT as u32);
|
|
encoder.set_color(png::ColorType::RGBA);
|
|
encoder.set_depth(png::BitDepth::Eight);
|
|
let mut writer = encoder.write_header().unwrap();
|
|
|
|
writer.write_image_data(&img_data).unwrap();
|
|
}
|
|
|
|
Ok(())
|
|
}
|