New port: graphics/libxatracker

XA Tracker is built from Mesa sources and is required by xf86-video-vmware
in order to take advantage of accelerated graphics using the vmwgfx kernel
DRM driver.

This commit also adds libdrm as a runtime requirement for xf86-video-vmware
and patches the DRI device loading routine to work outside of Linux. If no
DRI device exists (vmwgfx kernel driver is not loaded), xf86-video-vmware
will fallback to software rendering.

The vmwgfx kernel driver is available in the drm-kmod port.

Reviewed by:	zeising
Approved by:	imp (mentor), zeising
Differential Revision:	D20153

2 files changed, 49 insertions, 0 deletions

diff --git a/x11-drivers/xf86-video-vmware/Makefile b/x11-drivers/xf86-video-vmware/Makefile
index 7401252333f6..270ecc34c69a 100644
--- a/x11-drivers/xf86-video-vmware/Makefile
+++ b/x11-drivers/xf86-video-vmware/Makefile
@@ -16,6 +16,11 @@ ONLY_FOR_ARCHS_REASON=	The vmware gfx protocol is only supported on x86-compatib
 
 XORG_CAT=	driver
 
+LIB_DEPENDS+=	libdrm.so:graphics/libdrm \
+		libxatracker.so:graphics/libxatracker
+
+CONFIGURE_ARGS= --without-libudev
+
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == i386
diff --git a/x11-drivers/xf86-video-vmware/files/patch-vmwgfx_vmwgfx__dri2.c b/x11-drivers/xf86-video-vmware/files/patch-vmwgfx_vmwgfx__dri2.c
new file mode 100644
index 000000000000..1c3b51ba3d23
--- /dev/null
+++ b/x11-drivers/xf86-video-vmware/files/patch-vmwgfx_vmwgfx__dri2.c
@@ -0,0 +1,44 @@
+--- vmwgfx/vmwgfx_dri2.c.orig	2018-05-17 07:42:24 UTC
++++ vmwgfx/vmwgfx_dri2.c
+@@ -413,8 +413,7 @@ xorg_dri2_init(ScreenPtr pScreen)
+     modesettingPtr ms = modesettingPTR(pScrn);
+     DRI2InfoRec dri2info;
+     int major, minor;
+-    char fdPath[VMWGFX_FD_PATH_LEN];
+-    ssize_t numChar;
++    const char *dev_name;
+ 
+     memset(&dri2info, 0, sizeof(dri2info));
+ 
+@@ -430,20 +429,13 @@ xorg_dri2_init(ScreenPtr pScreen)
+     dri2info.fd = ms->fd;
+     dri2info.driverName = "vmwgfx";
+ 
+-    /*
+-     * This way of obtaining the DRM device name is a bit
+-     * os-specific. It would be better to obtain it from
+-     * drmOpen. Currently this works only for Linux.
+-     */
+-    memset(fdPath, 0, VMWGFX_FD_PATH_LEN);
+-    snprintf(fdPath, VMWGFX_FD_PATH_LEN - 1, "/proc/self/fd/%d", ms->fd);
+-    numChar = readlink(fdPath, ms->dri2_device_name, VMWGFX_DRI_DEVICE_LEN);
+-    if (numChar <= 0 || numChar >= VMWGFX_DRI_DEVICE_LEN) {
++    dev_name = drmGetDeviceNameFromFd2(ms->fd);
++    if (!dev_name) {
+ 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+ 		   "Could not find the drm device name. Disabling dri2.\n");
+ 	return FALSE;
+     }
+-    ms->dri2_device_name[numChar] = 0;
++	strncpy(ms->dri2_device_name, dev_name, VMWGFX_DRI_DEVICE_LEN);
+     dri2info.deviceName = ms->dri2_device_name;
+     xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+ 	       "Path of drm device is \"%s\".\n", ms->dri2_device_name);
+@@ -466,6 +458,7 @@ xorg_dri2_init(ScreenPtr pScreen)
+ 	dri2info.AuthMagic3 = vmw_dri_auth_magic3;
+     }
+ #endif
++	free(dev_name);
+ 
+     return DRI2ScreenInit(pScreen, &dri2info);
+ }