From b44f14e1863d251cc960a6252c8d0110f3062215 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A9ctor=20Ram=C3=B3n=20Jim=C3=A9nez?=
 <hector0193@gmail.com>
Date: Thu, 16 Apr 2020 14:54:29 +0200
Subject: [PATCH] Fix MSAA blit vertex shader to match `wgpu` NDC

---
 wgpu/src/shader/blit.vert       |   6 +++---
 wgpu/src/shader/blit.vert.spv   | Bin 1384 -> 1384 bytes
 wgpu/src/widget/canvas/frame.rs |   2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/wgpu/src/shader/blit.vert b/wgpu/src/shader/blit.vert
index 1c081b9e..899cd39d 100644
--- a/wgpu/src/shader/blit.vert
+++ b/wgpu/src/shader/blit.vert
@@ -3,12 +3,12 @@
 layout(location = 0) out vec2 o_Uv;
 
 const vec2 positions[6] = vec2[6](
-    vec2(-1.0, -1.0),
     vec2(-1.0, 1.0),
-    vec2(1.0, 1.0),
     vec2(-1.0, -1.0),
     vec2(1.0, -1.0),
-    vec2(1.0, 1.0)
+    vec2(-1.0, 1.0),
+    vec2(1.0, 1.0),
+    vec2(1.0, -1.0)
 );
 
 const vec2 uvs[6] = vec2[6](
diff --git a/wgpu/src/shader/blit.vert.spv b/wgpu/src/shader/blit.vert.spv
index ad697d4828a2bd9a4e0bba013cfe47e7851c754f..e0b436ce70bd2da13bcb9a9d95e7a9414e3d2a6e 100644
GIT binary patch
delta 44
tcmaFC^@3}|73Rq=n0YwW7#J8-KzQ;?W^G<|AWId91%X(7vm%Q-BLD-92*>~c

delta 44
ucmaFC^@3}|73Rq=n0YwW7#J8-fS7;sOJ;3eK_E*Nh}D5uaI+$dJ0k!9VF;Z7

diff --git a/wgpu/src/widget/canvas/frame.rs b/wgpu/src/widget/canvas/frame.rs
index 24fd0d7e..de4717f1 100644
--- a/wgpu/src/widget/canvas/frame.rs
+++ b/wgpu/src/widget/canvas/frame.rs
@@ -248,7 +248,7 @@ impl Frame {
             .transforms
             .current
             .raw
-            .pre_rotate(lyon::math::Angle::radians(angle));
+            .pre_rotate(lyon::math::Angle::radians(-angle));
         self.transforms.current.is_identity = false;
     }