[Buildroot] [PATCH 1/5] package/flutter-sdk-bin: bump version to 3.13.9

[Buildroot] [PATCH 1/5] package/flutter-sdk-bin: bump version to 3.13.9

[Adam Duskett]

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-sdk-bin/flutter-sdk-bin.hash | 2 +-
 package/flutter-sdk-bin/flutter-sdk-bin.mk   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.hash b/package/flutter-sdk-bin/flutter-sdk-bin.hash
index 9daf6c58be..a204de1807 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.hash
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.hash
@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  d9bbfbfb6fe3c72a29c1040235126edd0cd461e4e18556335fd1cf217c2e1473  flutter_linux_3.13.4-stable.tar.xz
+sha256  b6bc6f93423488c67110e0fe56523cd2260f3a4c379ed015cd1c7fab66362739  flutter_linux_3.13.9-stable.tar.xz
 sha256  a598db94b6290ffbe10b5ecf911057b6a943351c727fdda9e5f2891d68700a20  LICENSE
diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.mk b/package/flutter-sdk-bin/flutter-sdk-bin.mk
index dc6d68fdcb..17cd3523a6 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.mk
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FLUTTER_SDK_BIN_VERSION = 3.13.4
+FLUTTER_SDK_BIN_VERSION = 3.13.9
 FLUTTER_SDK_BIN_SITE = https://storage.googleapis.com/flutter_infra_release/releases/stable/linux
 FLUTTER_SDK_BIN_SOURCE = flutter_linux_$(FLUTTER_SDK_BIN_VERSION)-stable.tar.xz
 FLUTTER_SDK_BIN_LICENSE = BSD-3-Clause
-- 
2.41.0

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[Buildroot] [PATCH 2/5] package/flutter-engine: bump version to 3.13.9

[Adam Duskett]

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-engine/flutter-engine.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/flutter-engine/flutter-engine.mk b/package/flutter-engine/flutter-engine.mk
index 942b07786b..4701c1f536 100644
--- a/package/flutter-engine/flutter-engine.mk
+++ b/package/flutter-engine/flutter-engine.mk
@@ -21,7 +21,7 @@
 #
 # There is no hash provided, as the gn binary (used for configuration) relies
 # on the .git directories. As such, a reproducible tarball is not possible.
-FLUTTER_ENGINE_VERSION = 3.13.4
+FLUTTER_ENGINE_VERSION = 3.13.9
 
 # There is nothing for Buildroot to download. This is handled by gclient.
 FLUTTER_ENGINE_SITE =
-- 
2.41.0

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Re: [Buildroot] [PATCH 2/5] package/flutter-engine: bump version to 3.13.9

[Thomas Petazzoni via buildroot]

On Thu,  2 Nov 2023 12:54:08 -0600
Adam Duskett <adam.duskett@amarulasolutions.com> wrote:

> Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
> ---
>  package/flutter-engine/flutter-engine.mk | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to master, thanks.

Thomas
-- 
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Embedded Linux and Kernel engineering
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[Buildroot] [PATCH 3/5] package/flutter-engine: use impeller rendering engine

[Adam Duskett]

From: https://docs.flutter.dev/perf/impeller
Impeller provides a new rendering runtime for Flutter. The Flutter team’s
believes this solves Flutter’s early-onset jank issue. Impeller precompiles a
smaller, simpler set of shaders at Engine build time so they don’t compile at
runtime.

Impeller has the following objectives:

  - Predictable performance: Impeller compiles all shaders and reflection
    offline at build time. It builds all pipeline state objects upfront.
    The engine controls caching and caches explicitly.

  - Instrumentable: Impeller tags and labels all graphics resources like
    textures, and buffers. It can capture and persist animations to disk
    without affecting per-frame rendering performance.

  - Portable: Flutter doesn’t tie Impeller to a specific client rendering API.
    You can author shaders once and convert them to backend-specific formats as
    necessary.

  - Leverages modern graphics APIs: Impeller uses, but doesn’t depend on,
    features available in modern APIs like Metal and Vulkan.

  - Leverages concurrency: Impeller can distribute single-frame workloads
    across multiple threads if necessary.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-engine/flutter-engine.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/flutter-engine/flutter-engine.mk b/package/flutter-engine/flutter-engine.mk
index 4701c1f536..32aaa1cccf 100644
--- a/package/flutter-engine/flutter-engine.mk
+++ b/package/flutter-engine/flutter-engine.mk
@@ -124,6 +124,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_HAS_LIBGLES),y)
 FLUTTER_ENGINE_DEPENDENCIES += libgles
+FLUTTER_ENGINE_CONF_OPTS += --enable-impeller-opengles
 endif
 
 ifeq ($(BR2_PACKAGE_LIBGLFW),y)
@@ -142,7 +143,7 @@ endif
 
 # There is no --disable-vulkan option
 ifeq ($(BR2_PACKAGE_MESA3D_VULKAN_DRIVER),y)
-FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan
+FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan --enable-impeller-vulkan
 endif
 
 ifeq ($(BR2_PACKAGE_XORG7)$(BR2_PACKAGE_LIBXCB),yy)
-- 
2.41.0

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Re: [Buildroot] [PATCH 3/5] package/flutter-engine: use impeller rendering engine

[Thomas Petazzoni via buildroot]

On Thu,  2 Nov 2023 12:54:09 -0600
Adam Duskett <adam.duskett@amarulasolutions.com> wrote:

> From: https://docs.flutter.dev/perf/impeller

Using this syntax is not a good idea, as it makes "git am" believe that
the author of the patch is https://docs.flutter.dev/perf/impeller,
which screws things up. I fixed that when applying to master. Thanks!

Thomas
-- 
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Embedded Linux and Kernel engineering and training
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[Buildroot] [PATCH 4/5] package/flutter-pi: bump version to 8f4e9726a18b32822b6e7faf19c044f88bded570

[Adam Duskett]

 - Drop upstream 0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch
 - Disable new charset converter plugin.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 ...er_surface-properly-fallback-to-surf.patch | 59 -------------------
 package/flutter-pi/flutter-pi.hash            |  2 +-
 package/flutter-pi/flutter-pi.mk              |  3 +-
 3 files changed, 3 insertions(+), 61 deletions(-)
 delete mode 100644 package/flutter-pi/0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch

diff --git a/package/flutter-pi/0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch b/package/flutter-pi/0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch
deleted file mode 100644
index 7a1a49b3d4..0000000000
--- a/package/flutter-pi/0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From 856f9849763535d62ed01b538ba23905875c93f4 Mon Sep 17 00:00:00 2001
-From: "Yann E. MORIN" <yann.morin.1998@free.fr>
-Date: Tue, 26 Sep 2023 20:31:17 +0200
-Subject: [PATCH] src/egl_gbm_render_surface: properly fallback to surface with
- no modifier
-
-In 869fa7fcfbeb, we added a fallback to be able to create an EGL sruface
-when the driver do not support modifiers, like the llvmpipe software
-renderer (or like some proprietary drivers, like the MALI ones), as
-reported in #269 [0].
-
-However, in c6537673c9b6, there was a big overhaul of renderer
-infrastructure. That commit lost the with-modifiers code path and only
-kept the without-modifiers fallback one (i.e. it only kept the call to
-gbm_surface_create(), not to gbm_surface_create_with_modifiers()).
-
-Then in b0d09f5032a4, the with-modifier code path was re-instated, but
-in a way that made it exclusive with the without-modifiers one. That is,
-the without-modifiers code path was not a fallback to when the other
-failed.
-
-Re-instate the fallback mechanism as intiially implemented.
-
-[0] https://github.com/ardera/flutter-pi/issues/269
-
-Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
-Upstream: https://github.com/ardera/flutter-pi/pull/367
----
- src/egl_gbm_render_surface.c | 6 ++++--
- 1 file changed, 4 insertions(+), 2 deletions(-)
-
-diff --git a/src/egl_gbm_render_surface.c b/src/egl_gbm_render_surface.c
-index ce9e5e7..8a58667 100644
---- a/src/egl_gbm_render_surface.c
-+++ b/src/egl_gbm_render_surface.c
-@@ -146,6 +146,7 @@ static int egl_gbm_render_surface_init(
-     }
- #endif
- 
-+    gbm_surface = NULL;
-     if (allowed_modifiers != NULL) {
-         gbm_surface = gbm_surface_create_with_modifiers(
-             gbm_device,
-@@ -158,9 +159,10 @@ static int egl_gbm_render_surface_init(
-         if (gbm_surface == NULL) {
-             ok = errno;
-             LOG_ERROR("Couldn't create GBM surface for rendering. gbm_surface_create_with_modifiers: %s\n", strerror(ok));
--            return ok;
-+            LOG_ERROR("Will retry without modifiers\n");
-         }
--    } else {
-+    }
-+    if (gbm_surface == NULL) {
-         gbm_surface = gbm_surface_create(
-             gbm_device,
-             size.x,
--- 
-2.25.1
-
diff --git a/package/flutter-pi/flutter-pi.hash b/package/flutter-pi/flutter-pi.hash
index f7148963a4..bb8f52c608 100644
--- a/package/flutter-pi/flutter-pi.hash
+++ b/package/flutter-pi/flutter-pi.hash
@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  e4af79c8f53c15913f52a83a221f099a2a750d023a0bc4560d0db6f15def79a2  flutter-pi-d62e84350d2869b3ec1dfb1af21bfe234c4b817f-br1.tar.gz
+sha256  ecb1557020afc22b30a4361230a4ed09be2493d420fed5e89cd93698a008a2fd  flutter-pi-8f4e9726a18b32822b6e7faf19c044f88bded570-br1.tar.gz
 sha256  b34df9d3e1b4e5d1ba70b1740ec74b69f1189b44efd0c96b898b074ef8db1c70  LICENSE
diff --git a/package/flutter-pi/flutter-pi.mk b/package/flutter-pi/flutter-pi.mk
index 27f140c177..491c074e13 100644
--- a/package/flutter-pi/flutter-pi.mk
+++ b/package/flutter-pi/flutter-pi.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FLUTTER_PI_VERSION = d62e84350d2869b3ec1dfb1af21bfe234c4b817f
+FLUTTER_PI_VERSION = 8f4e9726a18b32822b6e7faf19c044f88bded570
 FLUTTER_PI_SITE = https://github.com/ardera/flutter-pi.git
 FLUTTER_PI_SITE_METHOD = git
 FLUTTER_PI_LICENSE = MIT
@@ -27,6 +27,7 @@ FLUTTER_PI_CONF_OPTS = \
 	-DENABLE_VULKAN=OFF \
 	-DFILESYSTEM_LAYOUT=meta-flutter \
 	-DLINT_EGL_HEADERS=OFF \
+	-DBUILD_CHARSET_CONVERTER_PLUGIN=OFF \
 	-DTRY_BUILD_GSTREAMER_AUDIO_PLAYER_PLUGIN=OFF \
 	-DTRY_BUILD_GSTREAMER_VIDEO_PLAYER_PLUGIN=OFF \
 	-DTRY_ENABLE_OPENGL=OFF \
-- 
2.41.0

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Re: [Buildroot] [PATCH 4/5] package/flutter-pi: bump version to 8f4e9726a18b32822b6e7faf19c044f88bded570

[Thomas Petazzoni via buildroot]

On Thu,  2 Nov 2023 12:54:10 -0600
Adam Duskett <adam.duskett@amarulasolutions.com> wrote:

>  - Drop upstream 0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch
>  - Disable new charset converter plugin.
> 
> Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
> ---
>  ...er_surface-properly-fallback-to-surf.patch | 59 -------------------
>  package/flutter-pi/flutter-pi.hash            |  2 +-
>  package/flutter-pi/flutter-pi.mk              |  3 +-
>  3 files changed, 3 insertions(+), 61 deletions(-)
>  delete mode 100644 package/flutter-pi/0001-src-egl_gbm_render_surface-properly-fallback-to-surf.patch

I don't get the same hash:

ERROR: expected: ecb1557020afc22b30a4361230a4ed09be2493d420fed5e89cd93698a008a2fd
ERROR: got     : e76b06bb5e93546b16c85f1f9e01c71a550cb05909e16b67eb0b03690ea38e6f

Could you double check?

I marked this patch and PATCH 5/5 as Changes Requested.

Thanks!

Thomas
-- 
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Embedded Linux and Kernel engineering
https://bootlin.com
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[Buildroot] [PATCH 5/5] package/flutter-pi: add charset converter plugin option

[Adam Duskett]

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-pi/Config.in     | 7 +++++++
 package/flutter-pi/flutter-pi.mk | 7 ++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/package/flutter-pi/Config.in b/package/flutter-pi/Config.in
index ecebfad89b..45b6b4faef 100644
--- a/package/flutter-pi/Config.in
+++ b/package/flutter-pi/Config.in
@@ -23,6 +23,13 @@ if BR2_PACKAGE_FLUTTER_PI
 
 comment "plugins"
 
+config BR2_PACKAGE_FLUTTER_PI_CHARSET_CONVERTER_PLUGIN
+	bool "charset converter"
+	help
+	  Adds platform-side implementation of charset_converter plugin.
+
+	  See: https://pub.dev/packages/charset_converter
+
 config BR2_PACKAGE_FLUTTER_PI_GSTREAMER_AUDIO_PLAYER_PLUGIN
 	bool "gstreamer audio player"
 	depends on BR2_PACKAGE_HAS_LIBGLES
diff --git a/package/flutter-pi/flutter-pi.mk b/package/flutter-pi/flutter-pi.mk
index 491c074e13..8bf25da008 100644
--- a/package/flutter-pi/flutter-pi.mk
+++ b/package/flutter-pi/flutter-pi.mk
@@ -27,7 +27,6 @@ FLUTTER_PI_CONF_OPTS = \
 	-DENABLE_VULKAN=OFF \
 	-DFILESYSTEM_LAYOUT=meta-flutter \
 	-DLINT_EGL_HEADERS=OFF \
-	-DBUILD_CHARSET_CONVERTER_PLUGIN=OFF \
 	-DTRY_BUILD_GSTREAMER_AUDIO_PLAYER_PLUGIN=OFF \
 	-DTRY_BUILD_GSTREAMER_VIDEO_PLAYER_PLUGIN=OFF \
 	-DTRY_ENABLE_OPENGL=OFF \
@@ -43,6 +42,12 @@ else
 FLUTTER_PI_CONF_OPTS += -DLTO=OFF
 endif
 
+ifeq ($(BR2_PACKAGE_FLUTTER_PI_CHARSET_CONVERTER_PLUGIN),y)
+FLUTTER_PI_CONF_OPTS += -DBUILD_CHARSET_CONVERTER_PLUGIN=ON
+else
+FLUTTER_PI_CONF_OPTS += -DBUILD_CHARSET_CONVERTER_PLUGIN=OFF
+endif
+
 ifeq ($(BR2_PACKAGE_FLUTTER_PI_GSTREAMER_AUDIO_PLAYER_PLUGIN),y)
 FLUTTER_PI_DEPENDENCIES += gstreamer1 gst1-plugins-base
 FLUTTER_PI_CONF_OPTS += -DBUILD_GSTREAMER_AUDIO_PLAYER_PLUGIN=ON
-- 
2.41.0

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Re: [Buildroot] [PATCH 1/5] package/flutter-sdk-bin: bump version to 3.13.9

[Thomas Petazzoni via buildroot]

On Thu,  2 Nov 2023 12:54:07 -0600
Adam Duskett <adam.duskett@amarulasolutions.com> wrote:

> Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
> ---
>  package/flutter-sdk-bin/flutter-sdk-bin.hash | 2 +-
>  package/flutter-sdk-bin/flutter-sdk-bin.mk   | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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[Buildroot] [PATCH 1/5] package/flutter-sdk-bin: bump version to 3.13.8

[Adam Duskett]

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-sdk-bin/flutter-sdk-bin.hash | 2 +-
 package/flutter-sdk-bin/flutter-sdk-bin.mk   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.hash b/package/flutter-sdk-bin/flutter-sdk-bin.hash
index 9daf6c58be..c914434e7e 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.hash
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.hash
@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  d9bbfbfb6fe3c72a29c1040235126edd0cd461e4e18556335fd1cf217c2e1473  flutter_linux_3.13.4-stable.tar.xz
+sha256  98e78d32a0b600b1ab762b84774891c97a2f40a0ec09919fb6d35892c349e350  flutter_linux_3.13.8-stable.tar.xz
 sha256  a598db94b6290ffbe10b5ecf911057b6a943351c727fdda9e5f2891d68700a20  LICENSE
diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.mk b/package/flutter-sdk-bin/flutter-sdk-bin.mk
index dc6d68fdcb..0d764f8e25 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.mk
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FLUTTER_SDK_BIN_VERSION = 3.13.4
+FLUTTER_SDK_BIN_VERSION = 3.13.8
 FLUTTER_SDK_BIN_SITE = https://storage.googleapis.com/flutter_infra_release/releases/stable/linux
 FLUTTER_SDK_BIN_SOURCE = flutter_linux_$(FLUTTER_SDK_BIN_VERSION)-stable.tar.xz
 FLUTTER_SDK_BIN_LICENSE = BSD-3-Clause
-- 
2.41.0

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[Buildroot] [PATCH 3/5] package/flutter-engine: use impeller rendering engine

[Adam Duskett]

From: https://docs.flutter.dev/perf/impeller
Impeller provides a new rendering runtime for Flutter. The Flutter team’s
believes this solves Flutter’s early-onset jank issue. Impeller precompiles a
smaller, simpler set of shaders at Engine build time so they don’t compile at
runtime.

Impeller has the following objectives:

  - Predictable performance: Impeller compiles all shaders and reflection
    offline at build time. It builds all pipeline state objects upfront.
    The engine controls caching and caches explicitly.

  - Instrumentable: Impeller tags and labels all graphics resources like
    textures, and buffers. It can capture and persist animations to disk
    without affecting per-frame rendering performance.

  - Portable: Flutter doesn’t tie Impeller to a specific client rendering API.
    You can author shaders once and convert them to backend-specific formats as
    necessary.

  - Leverages modern graphics APIs: Impeller uses, but doesn’t depend on,
    features available in modern APIs like Metal and Vulkan.

  - Leverages concurrency: Impeller can distribute single-frame workloads
    across multiple threads if necessary.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-engine/flutter-engine.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/flutter-engine/flutter-engine.mk b/package/flutter-engine/flutter-engine.mk
index dba9f71c4d..4eb8487d40 100644
--- a/package/flutter-engine/flutter-engine.mk
+++ b/package/flutter-engine/flutter-engine.mk
@@ -124,6 +124,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_HAS_LIBGLES),y)
 FLUTTER_ENGINE_DEPENDENCIES += libgles
+FLUTTER_ENGINE_CONF_OPTS += --enable-impeller-opengles
 endif
 
 ifeq ($(BR2_PACKAGE_LIBGLFW),y)
@@ -142,7 +143,7 @@ endif
 
 # There is no --disable-vulkan option
 ifeq ($(BR2_PACKAGE_MESA3D_VULKAN_DRIVER),y)
-FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan
+FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan --enable-impeller-vulkan
 endif
 
 ifeq ($(BR2_PACKAGE_XORG7)$(BR2_PACKAGE_LIBXCB),yy)
-- 
2.41.0

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[Buildroot] [PATCH 1/5] package/flutter-sdk-bin: bump version to 3.13.7

[Adam Duskett]

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-sdk-bin/flutter-sdk-bin.hash | 2 +-
 package/flutter-sdk-bin/flutter-sdk-bin.mk   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.hash b/package/flutter-sdk-bin/flutter-sdk-bin.hash
index 9daf6c58be..41c8a3c681 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.hash
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.hash
@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  d9bbfbfb6fe3c72a29c1040235126edd0cd461e4e18556335fd1cf217c2e1473  flutter_linux_3.13.4-stable.tar.xz
+sha256  5901524b91b02bca0799981e806a6b8f0a5ba1f1b18b5a814d80bbe95761b1ff  flutter_linux_3.13.7-stable.tar.xz
 sha256  a598db94b6290ffbe10b5ecf911057b6a943351c727fdda9e5f2891d68700a20  LICENSE
diff --git a/package/flutter-sdk-bin/flutter-sdk-bin.mk b/package/flutter-sdk-bin/flutter-sdk-bin.mk
index dc6d68fdcb..5563135f9f 100644
--- a/package/flutter-sdk-bin/flutter-sdk-bin.mk
+++ b/package/flutter-sdk-bin/flutter-sdk-bin.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FLUTTER_SDK_BIN_VERSION = 3.13.4
+FLUTTER_SDK_BIN_VERSION = 3.13.7
 FLUTTER_SDK_BIN_SITE = https://storage.googleapis.com/flutter_infra_release/releases/stable/linux
 FLUTTER_SDK_BIN_SOURCE = flutter_linux_$(FLUTTER_SDK_BIN_VERSION)-stable.tar.xz
 FLUTTER_SDK_BIN_LICENSE = BSD-3-Clause
-- 
2.41.0

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[Buildroot] [PATCH 3/5] package/flutter-engine: use impeller rendering engine

[Adam Duskett]

From: https://docs.flutter.dev/perf/impeller
Impeller provides a new rendering runtime for Flutter. The Flutter team’s
believes this solves Flutter’s early-onset jank issue. Impeller precompiles a
smaller, simpler set of shaders at Engine build time so they don’t compile at
runtime.

Impeller has the following objectives:

  - Predictable performance: Impeller compiles all shaders and reflection
    offline at build time. It builds all pipeline state objects upfront.
    The engine controls caching and caches explicitly.

  - Instrumentable: Impeller tags and labels all graphics resources like
    textures, and buffers. It can capture and persist animations to disk
    without affecting per-frame rendering performance.

  - Portable: Flutter doesn’t tie Impeller to a specific client rendering API.
    You can author shaders once and convert them to backend-specific formats as
    necessary.

  - Leverages modern graphics APIs: Impeller uses, but doesn’t depend on,
    features available in modern APIs like Metal and Vulkan.

  - Leverages concurrency: Impeller can distribute single-frame workloads
    across multiple threads if necessary.

Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
---
 package/flutter-engine/flutter-engine.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/flutter-engine/flutter-engine.mk b/package/flutter-engine/flutter-engine.mk
index 086476ddcd..6b140eb2b1 100644
--- a/package/flutter-engine/flutter-engine.mk
+++ b/package/flutter-engine/flutter-engine.mk
@@ -124,6 +124,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_HAS_LIBGLES),y)
 FLUTTER_ENGINE_DEPENDENCIES += libgles
+FLUTTER_ENGINE_CONF_OPTS += --enable-impeller-opengles
 endif
 
 ifeq ($(BR2_PACKAGE_LIBGLFW),y)
@@ -142,7 +143,7 @@ endif
 
 # There is no --disable-vulkan option
 ifeq ($(BR2_PACKAGE_MESA3D_VULKAN_DRIVER),y)
-FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan
+FLUTTER_ENGINE_CONF_OPTS += --enable-vulkan --enable-impeller-vulkan
 endif
 
 ifeq ($(BR2_PACKAGE_XORG7)$(BR2_PACKAGE_LIBXCB),yy)
-- 
2.41.0

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