[cogl] cogl-1.8.2-no-drm-hax.patch: Don't try insane direct DRM vblank wait.

[Adam Jackson]

commit c6fc02e4b0d486c841556a3f5cc7d0b8dd5317f8
Author: Adam Jackson <ajax at redhat.com>
Date:   Tue Nov 1 21:10:49 2011 -0400

    cogl-1.8.2-no-drm-hax.patch: Don't try insane direct DRM vblank wait.

 cogl-1.8.2-no-drm-hax.patch |   84 +++++++++++++++++++++++++++++++++++++++++++
 cogl.spec                   |    8 ++++-
 2 files changed, 91 insertions(+), 1 deletions(-)
---
diff --git a/cogl-1.8.2-no-drm-hax.patch b/cogl-1.8.2-no-drm-hax.patch
new file mode 100644
index 0000000..e19a385
--- /dev/null
+++ b/cogl-1.8.2-no-drm-hax.patch
@@ -0,0 +1,84 @@
+No, no, no, no, no.  If the driver doesn't give you the events you want,
+fix the driver.
+
+diff -up cogl-1.8.2/cogl/winsys/cogl-winsys-glx.c.jx cogl-1.8.2/cogl/winsys/cogl-winsys-glx.c
+--- cogl-1.8.2/cogl/winsys/cogl-winsys-glx.c.jx	2011-10-17 09:23:13.000000000 -0400
++++ cogl-1.8.2/cogl/winsys/cogl-winsys-glx.c	2011-11-01 18:34:38.731529285 -0400
+@@ -56,12 +56,6 @@
+ #include <GL/glx.h>
+ #include <X11/Xlib.h>
+ 
+-#ifdef HAVE_DRM
+-#include <drm.h>
+-#include <sys/ioctl.h>
+-#include <errno.h>
+-#endif
+-
+ #define COGL_ONSCREEN_X11_EVENT_MASK StructureNotifyMask
+ 
+ typedef struct _CoglContextGLX
+@@ -423,20 +417,6 @@ update_winsys_features (CoglContext *con
+                     COGL_WINSYS_FEATURE_VBLANK_WAIT,
+                     TRUE);
+ 
+-#ifdef HAVE_DRM
+-  /* drm is really an extreme fallback -rumoured to work with Via
+-   * chipsets... */
+-  if (!glx_renderer->pf_glXWaitVideoSync)
+-    {
+-      if (glx_renderer->dri_fd < 0)
+-        glx_renderer->dri_fd = open("/dev/dri/card0", O_RDWR);
+-      if (glx_renderer->dri_fd >= 0)
+-        COGL_FLAGS_SET (context->winsys_features,
+-                        COGL_WINSYS_FEATURE_VBLANK_WAIT,
+-                        TRUE);
+-    }
+-#endif
+-
+   if (glx_renderer->pf_glXCopySubBuffer || context->glBlitFramebuffer)
+     COGL_FLAGS_SET (context->winsys_features,
+                     COGL_WINSYS_FEATURE_SWAP_REGION, TRUE);
+@@ -1046,24 +1026,6 @@ _cogl_winsys_onscreen_bind (CoglOnscreen
+   glx_context->current_drawable = drawable;
+ }
+ 
+-#ifdef HAVE_DRM
+-static int
+-drm_wait_vblank (int fd, drm_wait_vblank_t *vbl)
+-{
+-    int ret, rc;
+-
+-    do
+-      {
+-        ret = ioctl (fd, DRM_IOCTL_WAIT_VBLANK, vbl);
+-        vbl->request.type &= ~_DRM_VBLANK_RELATIVE;
+-        rc = errno;
+-      }
+-    while (ret && rc == EINTR);
+-
+-    return rc;
+-}
+-#endif /* HAVE_DRM */
+-
+ static void
+ _cogl_winsys_wait_for_vblank (void)
+ {
+@@ -1082,18 +1044,6 @@ _cogl_winsys_wait_for_vblank (void)
+                                          (current_count + 1) % 2,
+                                          &current_count);
+     }
+-#ifdef HAVE_DRM
+-  else
+-    {
+-      drm_wait_vblank_t blank;
+-
+-      COGL_NOTE (WINSYS, "Waiting for vblank (drm)");
+-      blank.request.type = _DRM_VBLANK_RELATIVE;
+-      blank.request.sequence = 1;
+-      blank.request.signal = 0;
+-      drm_wait_vblank (glx_renderer->dri_fd, &blank);
+-    }
+-#endif /* HAVE_DRM */
+ }
+ 
+ static guint32
diff --git a/cogl.spec b/cogl.spec
index f4f7c2b..1c0ad33 100644
--- a/cogl.spec
+++ b/cogl.spec
@@ -1,6 +1,6 @@
 Name:          cogl
 Version:       1.8.2
-Release:       2%{?dist}
+Release:       3%{?dist}
 Summary:       A library for using 3D graphics hardware to draw pretty pictures
 
 Group:         Development/Libraries
@@ -21,6 +21,8 @@ BuildRequires: mesa-libGL-devel
 BuildRequires: pango-devel
 BuildRequires: pkgconfig
 
+Patch0: cogl-1.8.2-no-drm-hax.patch
+
 %description
 Cogl is a small open source library for using 3D graphics hardware to draw
 pretty pictures. The API departs from the flat state machine style of
@@ -60,6 +62,7 @@ This package contains documentation for %{name}.
 
 %prep
 %setup -q
+%patch0 -p1 -b .drm
 
 %build
 CFLAGS="$RPM_OPT_FLAGS -fPIC"
@@ -96,6 +99,9 @@ find %{buildroot} -name '*.la' -exec rm -f {} ';'
 %{_datadir}/gtk-doc/html/cogl-2.0-experimental
 
 %changelog
+* Tue Nov 01 2011 Adam Jackson <ajax at redhat.com> 1.8.2-3
+- cogl-1.8.2-no-drm-hax.patch: Don't try insane direct DRM vblank wait.
+
 * Wed Oct 26 2011 Fedora Release Engineering <rel-eng at lists.fedoraproject.org> - 1.8.2-2
 - Rebuilt for glibc bug#747377