From d76836579be3f9eb96115fc55f56d79215257f42 Mon Sep 17 00:00:00 2001
From: NicJA <NicJA@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Date: Mon, 7 Oct 2013 14:41:07 +0000
Subject: [PATCH] store the pre-alphacomposit hook and allow it to be queried.

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@48225 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
---
 rom/intuition/intuition_intern.h |  1 +
 rom/intuition/openscreen.c       |  7 +++++++
 rom/intuition/screenclass.c      | 12 ++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/rom/intuition/intuition_intern.h b/rom/intuition/intuition_intern.h
index 766e36b9f9..2f4be3309a 100644
--- a/rom/intuition/intuition_intern.h
+++ b/rom/intuition/intuition_intern.h
@@ -720,6 +720,7 @@ struct IntScreen
     Object                  *depthgadget;
     UWORD                    SpecialFlags;
     struct Layer            *rootLayer;
+    struct Hook              *preAlphaCompHook;
 #if !USE_NEWDISPLAYBEEP
     ULONG                    DisplayBeepColor0[3];
     struct Window           *DisplayBeepWindow;
diff --git a/rom/intuition/openscreen.c b/rom/intuition/openscreen.c
index a2f8275a6a..0c01e67dd8 100644
--- a/rom/intuition/openscreen.c
+++ b/rom/intuition/openscreen.c
@@ -176,6 +176,7 @@ static const char THIS_FILE[] = __FILE__;
     ULONG                  requesteddepth = 1;
     BOOL                   draggable = TRUE;
     ULONG                  compflags = COMPF_ABOVE; // Default to AmigaOS like behaviour.
+    struct Hook            *compalphahook = NULL;
 
     struct TagItem   modetags[] =
     {
@@ -486,6 +487,11 @@ static const char THIS_FILE[] = __FILE__;
             {
             case SA_CompositingFlags:
                 compflags = tag->ti_Data;
+                dprintf("OpenScreen: SA_CompositingFlags 0x%p\n", compflags);
+                break;
+            case SA_AlphaPreCompositHook:
+                compalphahook = (struct Hook *)tag->ti_Data;
+                dprintf("OpenScreen: SA_AlphaPreCompositHook 0x%p\n", compalphahook);
                 break;
             case SA_Left:
                 DEBUG_OPENSCREEN(dprintf("OpenScreen: SA_Left %ld\n",tag->ti_Data));
@@ -1103,6 +1109,7 @@ static const char THIS_FILE[] = __FILE__;
         success = TRUE;
 #ifdef __AROS__ /* AROS: Get HIDD composition flags */
         screen->SpecialFlags = ((compflags & (dimensions.reserved[0] >> 16)) | (dimensions.reserved[0] & 0xFFFF)) << 8;
+        screen->preAlphaCompHook = compalphahook;
 
         if (draggable) screen->SpecialFlags |= SF_Draggable;
 #else
diff --git a/rom/intuition/screenclass.c b/rom/intuition/screenclass.c
index f4b845e799..627059c421 100644
--- a/rom/intuition/screenclass.c
+++ b/rom/intuition/screenclass.c
@@ -835,6 +835,11 @@ IPTR ScreenClass__OM_GET(Class *cl, Object *o, struct opGet *msg)
         *msg->opg_Storage = (IPTR)(screen->SpecialFlags >> 8);
         break;
 
+    case SA_AlphaPreCompositHook:
+        bug("[ScreenClass] %s: SA_AlphaPreCompositHook\n", __PRETTY_FUNCTION__);
+        *msg->opg_Storage = (IPTR)screen->preAlphaCompHook;
+        break;
+
     case SA_OpacitySupport:    /* These are reserved in AROS */
     case SA_SourceAlphaSupport:
     case SA_ScreenbarSignal:
@@ -907,6 +912,13 @@ IPTR ScreenClass__OM_SET(Class *cl, Object *o, struct opSet *msg)
                 gammaset = TRUE;
             }
             break;
+
+        case SA_AlphaPreCompositHook:
+            {
+                screen->preAlphaCompHook = (struct Hook *)tag->ti_Data;
+                bug("[ScreenClass] %s: SA_AlphaPreCompositHook @ 0x%p\n", __PRETTY_FUNCTION__, screen->preAlphaCompHook);
+            }
+            break;
         }
     }
 
-- 
2.11.4.GIT