From 754ebf34cbb6280ef77421e1ca54d35d727dc6f7 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Sat, 18 Nov 2023 17:37:57 +0100
Subject: debug and better search

---
 flowy/src/main.rs           | 16 +++++++++++++---
 flowy/src/motion/debug.wgsl |  2 +-
 flowy/src/motion/enc.rs     |  2 +-
 flowy/src/motion/enc.wgsl   | 35 ++++++++++++++++++++++-------------
 4 files changed, 37 insertions(+), 18 deletions(-)

diff --git a/flowy/src/main.rs b/flowy/src/main.rs
index 6620ed8..8529f2c 100644
--- a/flowy/src/main.rs
+++ b/flowy/src/main.rs
@@ -5,7 +5,8 @@ use log::{debug, info};
 use motion::{dec::MotionDecoder, enc::MotionEncoder, CommonBuffers, Params};
 use pollster::FutureExt;
 use std::{
-    io::{stdin, stdout, Read, Write},
+    io::{stdin, stdout, ErrorKind, Read, Write},
+    process::exit,
     time::Instant,
 };
 use wgpu::{
@@ -86,9 +87,16 @@ fn main() {
             debug: fparams.debug == 2,
             preview: fparams.debug > 0,
         };
-        eprintln!("{params:?} {rp:?}");
+        debug!("{params:?} {rp:?}");
         debug!("read");
-        stdin().read_exact(&mut buffer).unwrap();
+        match stdin().read_exact(&mut buffer) {
+            Ok(_) => (),
+            Err(e) if e.kind() == ErrorKind::UnexpectedEof => {
+                break;
+            }
+            Err(e) => Err(e).unwrap(),
+        }
+
         framework.next_frame_manual();
 
         debug!("upload");
@@ -120,4 +128,6 @@ fn main() {
         stdout().write_all(&buffer).unwrap();
         i += 1;
     }
+    eprintln!("done");
+    exit(0);
 }
diff --git a/flowy/src/motion/debug.wgsl b/flowy/src/motion/debug.wgsl
index 3e740f6..7da5c57 100644
--- a/flowy/src/motion/debug.wgsl
+++ b/flowy/src/motion/debug.wgsl
@@ -25,7 +25,7 @@ struct BlockOffset {
     for (var x = 0; x < params.block_size.x; x++) {
         for (var y = 0; y < params.block_size.y; y++) {
             let base = uv + vec2(x, y);
-            let col = vec4(colormap_vec(vec2<f32>(bl.offset) * 0.05),1.);
+            let col = vec4(colormap_vec(vec2<f32>(bl.offset) * 0.08),1.);
             textureStore(out, base, col);
         }
     }
diff --git a/flowy/src/motion/enc.rs b/flowy/src/motion/enc.rs
index 56b459b..d3e8a81 100644
--- a/flowy/src/motion/enc.rs
+++ b/flowy/src/motion/enc.rs
@@ -38,7 +38,7 @@ impl MotionEncoder {
             block_size: [params.block_width as i32, params.block_height as i32],
             output_stride: (params.width / params.block_width) as u32,
             search_radius: 16,
-            skip_threshold: 0.07,
+            skip_threshold: 0.1,
             ..Default::default()
         };
 
diff --git a/flowy/src/motion/enc.wgsl b/flowy/src/motion/enc.wgsl
index 6ba3081..80618b7 100644
--- a/flowy/src/motion/enc.wgsl
+++ b/flowy/src/motion/enc.wgsl
@@ -24,19 +24,28 @@ var<private> best_tint: vec3<f32> = vec3(0.);
 @compute @workgroup_size(1)fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
     let uv = vec2<i32>(global_id.xy) * params.block_size;
 
-    test_offset(uv, vec2(0, 0));
-
-    do_dist(uv, 32);
-    do_dist(uv, 16);
-    do_dist(uv, 10);
-    do_dist(uv, 8);
-    do_dist(uv, 6);
-    do_dist(uv, 3);
-    do_dist(uv, 4);
-    do_dist(uv, 2);
-    do_dist(uv, 1);
-
-    apply_tint(uv);
+    loop {
+        test_offset(uv, vec2(0, 0));
+        if best_error < params.skip_threshold { break; }
+        apply_tint(uv);
+        if best_error < params.skip_threshold { break; }
+        best_tint = vec3(0.);
+
+        do_dist(uv, 32);
+        do_dist(uv, 16);
+        do_dist(uv, 10);
+        do_dist(uv, 8);
+        if best_error < params.skip_threshold { break; }
+        do_dist(uv, 6);
+        do_dist(uv, 3);
+        do_dist(uv, 4);
+        do_dist(uv, 2);
+        do_dist(uv, 1);
+        if best_error < params.skip_threshold { break; }
+
+        apply_tint(uv);
+        break;
+    }
 
     offsets[global_id.x + global_id.y * params.offsets_stride] = BlockOffset(best_error, best_offset, best_tint);
 }
-- 
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