From 09773f89a3d3ac37a18fc439da3c4fed708be20e Mon Sep 17 00:00:00 2001
From: Chad Brokaw <cbrokaw@gmail.com>
Date: Wed, 19 Oct 2022 14:29:40 -0400
Subject: [PATCH] fix gradient ramp color packing

---
 piet-gpu/src/ramp.rs    |  2 +-
 piet-gpu/src/samples.rs | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/piet-gpu/src/ramp.rs b/piet-gpu/src/ramp.rs
index 8e4ca19..1c834f7 100644
--- a/piet-gpu/src/ramp.rs
+++ b/piet-gpu/src/ramp.rs
@@ -124,6 +124,6 @@ impl ColorF64 {
         let g = ((self.0[1] * a).min(1.0).max(0.0) * 255.0) as u32;
         let b = ((self.0[2] * a).min(1.0).max(0.0) * 255.0) as u32;
         let a = (a * 255.0) as u32;
-        b | (g << 8) | (r << 16) | (a << 24)
+        r | (g << 8) | (b << 16) | (a << 24)
     }
 }
diff --git a/piet-gpu/src/samples.rs b/piet-gpu/src/samples.rs
index 9a4f094..091f4ef 100644
--- a/piet-gpu/src/samples.rs
+++ b/piet-gpu/src/samples.rs
@@ -206,9 +206,9 @@ fn render_blend_square(sb: &mut SceneBuilder, blend: BlendMode, transform: Affin
     });
     sb.fill(Fill::NonZero, transform, &linear, None, rect.elements());
     const GRADIENTS: &[(f32, f32, Color)] = &[
-        (150., 0., Color::rgb8(64, 240, 255)),
-        (175., 100., Color::rgb8(240, 96, 255)),
-        (125., 200., Color::rgb8(255, 192, 64)),
+        (150., 0., Color::rgb8(255, 240, 64)),
+        (175., 100., Color::rgb8(255, 96, 240)),
+        (125., 200., Color::rgb8(64, 192, 255)),
     ];
     for (x, y, c) in GRADIENTS {
         let mut color2 = c.clone();
@@ -234,9 +234,9 @@ fn render_blend_square(sb: &mut SceneBuilder, blend: BlendMode, transform: Affin
         sb.fill(Fill::NonZero, transform, &rad, None, rect.elements());
     }
     const COLORS: &[Color] = &[
-        Color::rgb8(0, 0, 255),
-        Color::rgb8(0, 255, 0),
         Color::rgb8(255, 0, 0),
+        Color::rgb8(0, 255, 0),
+        Color::rgb8(0, 0, 255),
     ];
     sb.push_layer(Mix::Normal.into(), transform, rect.elements());
     for (i, c) in COLORS.iter().enumerate() {