From beeae174f9fffe6ea9c50a717a9b45c71ed45ea9 Mon Sep 17 00:00:00 2001
From: Angelo Compagnucci <angelo@amarulasolutions.com>
Date: Tue, 7 Feb 2023 18:17:14 +0100
Subject: [PATCH] package/qt6/qt6base: add opengl support

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 package/qt6/Config.in          |  5 ++++
 package/qt6/qt6base/Config.in  | 42 +++++++++++++++++++++++++++++++++-
 package/qt6/qt6base/qt6base.mk | 18 ++++++++++++++-
 3 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/package/qt6/Config.in b/package/qt6/Config.in
index 4b2b9a1174..831ae72c3c 100644
--- a/package/qt6/Config.in
+++ b/package/qt6/Config.in
@@ -12,6 +12,11 @@ config BR2_PACKAGE_QT6_ARCH_SUPPORTS
 	default y if BR2_sparc64
 	depends on BR2_USE_MMU
 
+config BR2_PACKAGE_QT6_GL_SUPPORTS
+	bool
+	default y
+	depends on BR2_PACKAGE_HAS_LIBGL || BR2_PACKAGE_HAS_LIBGLES
+
 comment "qt6 needs a toolchain w/ C++, threads, wchar, dynamic library, gcc >= 8, host gcc >= 8"
 	depends on !BR2_PACKAGE_QT5
 	depends on BR2_PACKAGE_QT6_ARCH_SUPPORTS
diff --git a/package/qt6/qt6base/Config.in b/package/qt6/qt6base/Config.in
index 973fb2f11c..131dfadc1b 100644
--- a/package/qt6/qt6base/Config.in
+++ b/package/qt6/qt6base/Config.in
@@ -36,7 +36,8 @@ config BR2_PACKAGE_QT6BASE_GUI
 	# At least one graphic backend must be enabled, so enable
 	# linuxfb if nothing is enabled.
 	select BR2_PACKAGE_QT6BASE_LINUXFB if \
-	       !BR2_PACKAGE_QT6BASE_XCB
+	       !BR2_PACKAGE_QT6BASE_XCB && \
+	       !BR2_PACKAGE_QT6BASE_EGLFS
 	help
 	  This option enables the Qt6Gui library.
 
@@ -59,6 +60,45 @@ config BR2_PACKAGE_QT6BASE_XCB
 comment "X.org XCB backend available if X.org is enabled"
 	depends on !BR2_PACKAGE_XORG7
 
+config BR2_PACKAGE_QT6BASE_EGLFS
+	bool "eglfs support"
+	depends on BR2_PACKAGE_HAS_LIBEGL
+	depends on BR2_PACKAGE_HAS_LIBGBM
+	depends on BR2_PACKAGE_QT6_GL_SUPPORTS
+	select BR2_PACKAGE_QT6BASE_OPENGL
+
+config BR2_PACKAGE_QT6BASE_OPENGL
+	bool "OpenGL support"
+	depends on BR2_PACKAGE_QT6_GL_SUPPORTS
+	help
+	  This option enables OpenGL support.
+
+comment "OpenGL support needs an OpenGL-capable backend"
+	depends on !BR2_PACKAGE_QT6_GL_SUPPORTS
+
+if BR2_PACKAGE_QT6BASE_OPENGL
+
+choice
+	prompt "OpenGL API"
+	help
+	  Select OpenGL API.
+
+config BR2_PACKAGE_QT6BASE_OPENGL_DESKTOP
+	bool "Desktop OpenGL"
+	depends on BR2_PACKAGE_HAS_LIBGL
+	help
+	  Use desktop OpenGL.
+
+config BR2_PACKAGE_QT6BASE_OPENGL_ES2
+	bool "OpenGL ES 2.0+"
+	depends on BR2_PACKAGE_HAS_LIBGLES
+	help
+	  Use OpenGL ES 2.0 and later versions.
+
+endchoice
+
+endif
+
 config BR2_PACKAGE_QT6BASE_FONTCONFIG
 	bool "fontconfig support"
 	select BR2_PACKAGE_FONTCONFIG
diff --git a/package/qt6/qt6base/qt6base.mk b/package/qt6/qt6base/qt6base.mk
index 911375aa6d..2540fbb59c 100644
--- a/package/qt6/qt6base/qt6base.mk
+++ b/package/qt6/qt6base/qt6base.mk
@@ -144,7 +144,6 @@ ifeq ($(BR2_PACKAGE_QT6BASE_GUI),y)
 QT6BASE_CONF_OPTS += \
 	-DFEATURE_gui=ON \
 	-DFEATURE_freetype=ON \
-	-DINPUT_opengl=no \
 	-DFEATURE_vulkan=OFF
 QT6BASE_DEPENDENCIES += freetype
 
@@ -230,6 +229,23 @@ else
 QT6BASE_CONF_OPTS += -DFEATURE_widgets=OFF
 endif
 
+ifeq ($(BR2_PACKAGE_QT6BASE_EGLFS),y)
+QT6BASE_CONF_OPTS += -DFEATURE_egl=ON -DFEATURE_eglfs=ON
+QT6BASE_DEPENDENCIES += libegl libgbm
+else
+QT6BASE_CONF_OPTS += -DFEATURE_eglfs=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_QT6BASE_OPENGL_DESKTOP),y)
+QT6BASE_CONF_OPTS += -DFEATURE_opengl=ON -DFEATURE_opengl_desktop=ON
+QT6BASE_DEPENDENCIES += libgl
+else ifeq ($(BR2_PACKAGE_QT6BASE_OPENGL_ES2),y)
+QT6BASE_CONF_OPTS += -DFEATURE_opengl=ON -DFEATURE_opengles2=ON
+QT6BASE_DEPENDENCIES += libgles
+else
+QT6BASE_CONF_OPTS += -DFEATURE_opengl=OFF -DINPUT_opengl=no
+endif
+
 else
 QT6BASE_CONF_OPTS += -DFEATURE_gui=OFF
 endif