vbox6: basic 3D support

Implement GLX and X functionality through Mesa's EGL interface. This
requires multiple OpenGL contexts and in turn GEM context support in
libdrm/iris, as implemented in libdrm and intel_gpu_drv.

Update recipes and machine.vbox6 files accordingly,

issue #4380

repos/ports/recipes/pkg/vbox6/archives

@@ -1,13 +1,17 @@
 _/raw/vbox6
+_/src/expat
 _/src/init
 _/src/jpeg
 _/src/libc
+_/src/libdrm
 _/src/libiconv
 _/src/libyuv
+_/src/mesa
 _/src/posix
 _/src/stdcxx
 _/src/vbox6
 _/src/vfs
+_/src/vfs_gpu
 _/src/vfs_oss
 _/src/vfs_pipe
 _/src/zlib

repos/ports/recipes/pkg/vbox6/runtime

@@ -1,10 +1,11 @@
-<runtime ram="4300M" caps="2500" binary="init">
+<runtime ram="4300M" caps="8000" binary="init">
 
 	<requires>
 		<file_system label="vm"/>
 		<file_system label="shared"/>
 		<vm/>
 		<timer/>
+		<gpu/>
 		<gui/>
 		<nic/>
 		<rom label="capslock"/>
@@ -12,6 +13,7 @@
 		<report label="shape"/>
 		<report label="clipboard"/>
 		<rom    label="clipboard"/>
+		<rom label="mesa_gpu_drv.lib.so"/>
 		<rm/>
 		<rtc/>
 		<rom label="usb_devices"/>
@@ -30,6 +32,7 @@
 			<service name="LOG"/>
 			<service name="VM"/>
 			<service name="Gui"/>
+			<service name="Gpu"/>
 			<service name="Timer"/>
 			<service name="Rtc"/>
 			<service name="Report"/>
@@ -44,14 +47,14 @@
 
 		<default caps="100"/>
 
-		<start name="vbox" caps="2000">
+		<start name="vbox" caps="7000">
 			<binary name="virtualbox6" />
 			<resource name="RAM" quantum="8G"/>
 			<exit propagate="yes"/>
 			<config vbox_file="machine.vbox6" xhci="yes" vm_name="linux" capslock="rom" ld_verbose="yes">
 				<vfs>
 					<dir name="dev">
-						<log/> <rtc/> <null/> <zero/> <oss name="dsp"/>
+						<log/> <rtc/> <null/> <gpu/> <zero/> <oss name="dsp"/>
 					</dir>
 					<dir name="pipe"> <pipe/> </dir>
 					<dir name="shared"> <fs label="shared" writeable="yes"/> </dir>
@@ -82,6 +85,8 @@
 				  <parent label="virtualbox6-sharedclipboard.lib.so"/> </service>
 				<service name="ROM" label="VBoxSharedFolders.so">
 				  <parent label="virtualbox6-sharedfolders.lib.so"/> </service>
+				<service name="ROM" label="mesa_gpu_drv.lib.so">
+				  <parent label="mesa_gpu_drv.lib.so"/> </service>
 				<service name="Nic">                        <parent/>                       </service>
 				<service name="Report" label="shape">       <parent label="shape"/>         </service>
 				<service name="ROM"    label="clipboard">   <parent label="clipboard"/>     </service>
@@ -93,21 +98,29 @@
 	</config>
 
 	<content>
+		<rom label="egl.lib.so"/>
+		<rom label="expat.lib.so"/>
+		<rom label="glapi.lib.so"/>
 		<rom label="ld.lib.so"/>
 		<rom label="init"/>
 		<rom label="virtualbox6"/>
 		<rom label="jpeg.lib.so"/>
 		<rom label="libc.lib.so"/>
+		<rom label="libdrm.lib.so"/>
 		<rom label="libiconv.lib.so"/>
 		<rom label="libm.lib.so"/>
 		<rom label="libyuv.lib.so"/>
+		<rom label="mesa.lib.so"/>
 		<rom label="qemu-usb.lib.so"/>
 		<rom label="stdcxx.lib.so"/>
 		<rom label="vfs.lib.so"/>
+		<rom label="vfs_gpu.lib.so"/>
 		<rom label="vfs_oss.lib.so"/>
 		<rom label="vfs_pipe.lib.so"/>
+		<rom label="virtualbox6-shaderlib.lib.so"/>
 		<rom label="virtualbox6-sharedclipboard.lib.so"/>
 		<rom label="virtualbox6-sharedfolders.lib.so"/>
+		<rom label="zlib.lib.so"/>
 	</content>
 
 </runtime>

repos/ports/recipes/raw/vbox6/machine.vbox6

@@ -17,7 +17,14 @@
       </CPU>
       <Memory RAMSize="4096"/>
       <HID Pointing="PS2Mouse"/>
+      <!-- normal operation -->
       <Display VRAMSize="20" monitorCount="1" controller="VBoxSVGA"/>
+      <!-- 3D Linux
+      <Display controller="VMSVGA" VRAMSize="256" accelerate3D="true"/>
+      -->
+      <!-- 3D Windows
+      <Display VRAMSize="128" monitorCount="1" controller="VBoxSVGA" accelerate3D="true"/>
+      -->
       <RemoteDisplay enabled="false"/>
       <Paravirt provider="KVM"/>
       <BIOS>

repos/ports/recipes/src/vbox6/used_apis

@@ -6,6 +6,7 @@ gui_session
 input_session
 libc
 libiconv
+mesa
 nic_session
 nitpicker_gfx
 os