fontconfig libX11 mesa xserver git update 4 Jan 2015

xserver          commit dc777c346d5d452a53b13b917c45f6a1bad2f20b
libX11           commit 446f5f7f41317a85a0cd0efa5e6a1b37bc99fba2
fontconfig       commit 4420b27c074821a1d1f9d6ebe822a610176a417d
mesa             commit 48094d0e6554a9df36bf00fc2793ade46cf92406

1 files changed, 25 insertions, 0 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_blend.h b/mesalib/src/gallium/auxiliary/util/u_blend.h
new file mode 100644
index 000000000..2485c34d4
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_blend.h
@@ -0,0 +1,25 @@
+#ifndef U_BLEND_H
+#define U_BLEND_H
+
+#include "pipe/p_state.h"
+
+/**
+ * When faking RGBX render target formats with RGBA ones, the blender is still
+ * supposed to treat the destination's alpha channel as 1 instead of the
+ * garbage that's there. Return a blend factor that will take that into
+ * account.
+ */
+static INLINE int
+util_blend_dst_alpha_to_one(int factor)
+{
+   switch (factor) {
+   case PIPE_BLENDFACTOR_DST_ALPHA:
+      return PIPE_BLENDFACTOR_ONE;
+   case PIPE_BLENDFACTOR_INV_DST_ALPHA:
+      return PIPE_BLENDFACTOR_ZERO;
+   default:
+      return factor;
+   }
+}
+
+#endif /* U_BLEND_H */