4017d31902
over to new system. Need to update documentation and address some remaining vestiges of old system such as CursorRec structure, fb "offman" structure, and FontRec privates.
145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/*
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* Support for accelerated rootless code
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*/
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/*
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* Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name(s) of the above copyright
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* holders shall not be used in advertising or otherwise to promote the sale,
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* use or other dealings in this Software without prior written authorization.
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*/
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/*
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* The accelerated rootless code replaces some GC operations from fb with
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* versions that call the rootless acceleration functions where appropriate.
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* To work properly, this must be wrapped directly on top of fb. Nothing
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* underneath this layer besides fb will get called.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "rootless.h"
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#include "rlAccel.h"
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typedef struct _rlAccelScreenRec {
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CreateGCProcPtr CreateGC;
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CloseScreenProcPtr CloseScreen;
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} rlAccelScreenRec, *rlAccelScreenPtr;
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static DevPrivateKey rlAccelScreenPrivateKey = &rlAccelScreenPrivateKey;
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#define RLACCELREC(pScreen) ((rlAccelScreenRec *) \
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dixLookupPrivate(&(pScreen)->devPrivates, rlAccelScreenPrivateKey))
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/* This is mostly identical to fbGCOps. */
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static GCOps rlAccelOps = {
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rlFillSpans,
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fbSetSpans,
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fbPutImage,
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rlCopyArea,
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fbCopyPlane,
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fbPolyPoint,
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fbPolyLine,
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fbPolySegment,
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fbPolyRectangle,
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fbPolyArc,
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miFillPolygon,
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rlPolyFillRect,
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fbPolyFillArc,
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miPolyText8,
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miPolyText16,
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miImageText8,
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miImageText16,
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rlImageGlyphBlt,
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fbPolyGlyphBlt,
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fbPushPixels
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};
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/*
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* Screen function to create a graphics context
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*/
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static Bool
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rlCreateGC(GCPtr pGC)
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{
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ScreenPtr pScreen = pGC->pScreen;
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rlAccelScreenRec *s = RLACCELREC(pScreen);
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Bool result;
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// Unwrap and call
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pScreen->CreateGC = s->CreateGC;
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result = s->CreateGC(pGC);
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// Accelerated GC ops replace some fb GC ops
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pGC->ops = &rlAccelOps;
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// Rewrap
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s->CreateGC = pScreen->CreateGC;
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pScreen->CreateGC = rlCreateGC;
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return result;
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}
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/*
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* Clean up when closing a screen on server reset
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*/
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static Bool
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rlCloseScreen (int iScreen, ScreenPtr pScreen)
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{
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rlAccelScreenRec *s = RLACCELREC(pScreen);
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Bool result;
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// Unwrap
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pScreen->CloseScreen = s->CloseScreen;
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result = pScreen->CloseScreen(iScreen, pScreen);
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xfree(s);
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return result;
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}
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/*
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* RootlessAccelInit
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* Called by the rootless implementation to initialize accelerated
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* rootless drawing.
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*/
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Bool
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RootlessAccelInit(ScreenPtr pScreen)
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{
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rlAccelScreenRec *s;
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s = xalloc(sizeof(rlAccelScreenRec));
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if (!s) return FALSE;
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RLACCELREC(pScreen) = s;
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// Wrap the screen functions we need
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s->CreateGC = pScreen->CreateGC;
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pScreen->CreateGC = rlCreateGC;
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s->CloseScreen = pScreen->CloseScreen;
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pScreen->CloseScreen = rlCloseScreen;
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return TRUE;
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}
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