Hi,
DirectFB is missing support for the destination Porter/Duff rule, the
attached trivial patch implements it.
Cheers,
Andre'
>From bc05f8f2cf3bc1346e79452baa5d84bffac874e7 Mon Sep 17 00:00:00 2001
From: =?utf-8?q?Andr=C3=A9=20Draszik?= <andre.dras...@st.com>
Date: Wed, 29 Jul 2009 14:54:33 +0100
Subject: [PATCH] (surface) add support for the DESTINATION Porter/Duff rule
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Signed-off-by: André Draszik <andre.dras...@st.com>
---
include/directfb.h | 1 +
src/display/idirectfbsurface.c | 4 ++++
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/directfb.h b/include/directfb.h
index afcf60d..73683f6 100644
--- a/include/directfb.h
+++ b/include/directfb.h
@@ -3192,6 +3192,7 @@ typedef enum {
DSPD_DST_ATOP = 10, /* fs: 1.0-da fd: sa */
DSPD_ADD = 11, /* fs: 1.0 fd: 1.0 */
DSPD_XOR = 12, /* fs: 1.0-da fd: 1.0-sa */
+ DSPD_DST = 13, /* fs: 0.0 fd: 1.0 */
} DFBSurfacePorterDuffRule;
/*
diff --git a/src/display/idirectfbsurface.c b/src/display/idirectfbsurface.c
index 85de236..5aed897 100644
--- a/src/display/idirectfbsurface.c
+++ b/src/display/idirectfbsurface.c
@@ -950,6 +950,10 @@ IDirectFBSurface_SetPorterDuff( IDirectFBSurface *thiz,
src = DSBF_INVDESTALPHA;
dst = DSBF_INVSRCALPHA;
break;
+ case DSPD_DST:
+ src = DSBF_ZERO;
+ dst = DSBF_ONE;
+ break;
default:
return DFB_INVARG;
}
--
1.6.0.4
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