From 0b73a7eb17fd848c6bdc6a65ba835aa2cbfc3cfd Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 5 Jan 2007 18:12:04 -0800
Subject: Add support for the DamagePost (XDamage 1.1) request.

This makes damageproto >= 1.1 a requirement to build.
---
 damageext/damageext.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

(limited to 'damageext')

diff --git a/damageext/damageext.c b/damageext/damageext.c
index 6083693a4..a90dfb823 100755
--- a/damageext/damageext.c
+++ b/damageext/damageext.c
@@ -279,10 +279,35 @@ ProcDamageSubtract (ClientPtr client)
     return (client->noClientException);
 }
 
+static int
+ProcDamagePost (ClientPtr client)
+{
+    REQUEST(xDamagePostReq);
+    DrawablePtr	    pDrawable;
+    RegionPtr	    pRegion;
+    int		    rc;
+
+    REQUEST_SIZE_MATCH(xDamagePostReq);
+    VERIFY_REGION(pRegion, stuff->region, client, DixWriteAccess);
+    rc = dixLookupDrawable(&pDrawable, stuff->drawable, client, 0,
+			   DixReadAccess);
+    if (rc != Success)
+	return rc;
+
+    /* The region is relative to the drawable origin, so translate it out to
+     * screen coordinates like damage expects.
+     */
+    REGION_TRANSLATE(pScreen, pRegion, pDrawable->x, pDrawable->y);
+    DamageDamageRegion(pDrawable, pRegion);
+    REGION_TRANSLATE(pScreen, pRegion, -pDrawable->x, -pDrawable->y);
+
+    return (client->noClientException);
+}
+
 /* Major version controls available requests */
 static const int version_requests[] = {
     X_DamageQueryVersion,	/* before client sends QueryVersion */
-    X_DamageSubtract,		/* Version 1 */
+    X_DamagePost,		/* Version 1 */
 };
 
 #define NUM_VERSION_REQUESTS	(sizeof (version_requests) / sizeof (version_requests[0]))
@@ -293,6 +318,8 @@ int	(*ProcDamageVector[XDamageNumberRequests])(ClientPtr) = {
     ProcDamageCreate,
     ProcDamageDestroy,
     ProcDamageSubtract,
+/*************** Version 1.1 ****************/
+    ProcDamagePost,
 };
 
 
@@ -361,12 +388,27 @@ SProcDamageSubtract (ClientPtr client)
     return (*ProcDamageVector[stuff->damageReqType]) (client);
 }
 
+static int
+SProcDamagePost (ClientPtr client)
+{
+    register int n;
+    REQUEST(xDamagePostReq);
+
+    swaps (&stuff->length, n);
+    REQUEST_SIZE_MATCH(xDamageSubtractReq);
+    swapl (&stuff->drawable, n);
+    swapl (&stuff->region, n);
+    return (*ProcDamageVector[stuff->damageReqType]) (client);
+}
+
 int	(*SProcDamageVector[XDamageNumberRequests])(ClientPtr) = {
 /*************** Version 1 ******************/
     SProcDamageQueryVersion,
     SProcDamageCreate,
     SProcDamageDestroy,
     SProcDamageSubtract,
+/*************** Version 1.1 ****************/
+    SProcDamagePost,
 };
 
 static int
-- 
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