[Buildroot] [PATCH RESEND v5 5/5] package/qemu: add virglrenderer support

[Joseph Kogut <joseph.kogut@gmail.com>]

Add optional virglrenderer support, along with enabling OpenGL when
necessary.

https://qemu.readthedocs.io/en/v10.0.3/system/devices/virtio-gpu.html#virtio-gpu-virglrenderer

Signed-off-by: Joseph Kogut <joseph.kogut@gmail.com>
---
 package/qemu/Config.in | 17 +++++++++++++++++
 package/qemu/qemu.mk   |  7 +++++++
 2 files changed, 24 insertions(+)

diff --git a/package/qemu/Config.in b/package/qemu/Config.in
index e4e8eb3b63..599bcb11bb 100644
--- a/package/qemu/Config.in
+++ b/package/qemu/Config.in
@@ -130,6 +130,23 @@ config BR2_PACKAGE_QEMU_OPENGL
 comment "OpenGL support needs an OpenGL and/or OpenGL EGL backend"
 	depends on !(BR2_PACKAGE_HAS_LIBEGL || BR2_PACKAGE_HAS_LIBGL)
 
+config BR2_PACKAGE_QEMU_VIRGLRENDERER
+	bool "Enable virglrenderer"
+	depends on BR2_PACKAGE_HAS_LIBEGL || BR2_PACKAGE_HAS_LIBGL
+	select BR2_PACKAGE_QEMU_OPENGL
+	select BR2_PACKAGE_VIRGLRENDERER
+	help
+	  Say 'y' to enable virglrenderer, enabling GL and Vulkan
+	  passthrough from the host to the guest through virtio-gpu.
+	  This enables the guest to have accelerated GL and/or Vulkan.
+
+	  Run qemu with `-device virtio-gpu-gl`
+
+	  https://qemu.readthedocs.io/en/v10.0.3/system/devices/virtio-gpu.html#virtio-gpu-virglrenderer
+
+comment "virglrenderer needs OpenGL accelerated display frontend support"
+	depends on !(BR2_PACKAGE_HAS_LIBEGL || BR2_PACKAGE_HAS_LIBGL)
+
 config BR2_PACKAGE_QEMU_FDT
 	bool "Enable FDT"
 	select BR2_PACKAGE_DTC
diff --git a/package/qemu/qemu.mk b/package/qemu/qemu.mk
index 9b780797fa..e250128dfa 100644
--- a/package/qemu/qemu.mk
+++ b/package/qemu/qemu.mk
@@ -281,6 +281,13 @@ else
 QEMU_OPTS += --disable-opengl
 endif
 
+ifeq ($(BR2_PACKAGE_QEMU_VIRGLRENDERER),y)
+QEMU_OPTS += --enable-virglrenderer
+QEMU_DEPENDENCIES += virglrenderer
+else
+QEMU_OPTS += --disable-virglrenderer
+endif
+
 ifeq ($(BR2_STATIC_LIBS),y)
 QEMU_OPTS += --static
 endif

-- 
2.54.0

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