[deb_xorg-server.git] / xpr / driWrap.c

/*
 * Copyright (c) 2009-2012 Apple Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
 * HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name(s) of the above
 * copyright holders shall not be used in advertising or otherwise to
 * promote the sale, use or other dealings in this Software without
 * prior written authorization.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <stddef.h>
#include "mi.h"
#include "scrnintstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "dixfontstr.h"
#include "mivalidate.h"
#include "driWrap.h"
#include "dri.h"

#include <OpenGL/OpenGL.h>

typedef struct {
    GCOps *originalOps;
} DRIGCRec;

typedef struct {
    GCOps *originalOps;
    CreateGCProcPtr CreateGC;
} DRIWrapScreenRec;

typedef struct {
    Bool didSave;
    int devKind;
    DevUnion devPrivate;
} DRISavedDrawableState;

static DevPrivateKeyRec driGCKeyRec;
#define driGCKey (&driGCKeyRec)

static DevPrivateKeyRec driWrapScreenKeyRec;
#define driWrapScreenKey (&driWrapScreenKeyRec)

static GCOps driGCOps;

#define wrap(priv, real, member, func) { \
        priv->member = real->member; \
        real->member = func; \
}

#define unwrap(priv, real, member)     { \
        real->member = priv->member; \
}

static DRIGCRec *
DRIGetGCPriv(GCPtr pGC)
{
    return dixLookupPrivate(&pGC->devPrivates, driGCKey);
}

static void
DRIUnwrapGC(GCPtr pGC)
{
    DRIGCRec *pGCPriv = DRIGetGCPriv(pGC);

    pGC->ops = pGCPriv->originalOps;
}

static void
DRIWrapGC(GCPtr pGC)
{
    pGC->ops = &driGCOps;
}

static void
DRISurfaceSetDrawable(DrawablePtr pDraw,
                      DRISavedDrawableState *saved)
{
    saved->didSave = FALSE;

    if (pDraw->type == DRAWABLE_PIXMAP) {
        int pitch, width, height, bpp;
        void *buffer;

        if (DRIGetPixmapData(pDraw, &width, &height, &pitch, &bpp,
                             &buffer)) {
            PixmapPtr pPix = (PixmapPtr)pDraw;

            saved->devKind = pPix->devKind;
            saved->devPrivate.ptr = pPix->devPrivate.ptr;
            saved->didSave = TRUE;

            pPix->devKind = pitch;
            pPix->devPrivate.ptr = buffer;
        }
    }
}

static void
DRISurfaceRestoreDrawable(DrawablePtr pDraw,
                          DRISavedDrawableState *saved)
{
    PixmapPtr pPix = (PixmapPtr)pDraw;

    if (!saved->didSave)
        return;

    pPix->devKind = saved->devKind;
    pPix->devPrivate.ptr = saved->devPrivate.ptr;
}

static void
DRIFillSpans(DrawablePtr dst, GCPtr pGC, int nInit,
             DDXPointPtr pptInit, int *pwidthInit,
             int sorted)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->FillSpans(dst, pGC, nInit, pptInit, pwidthInit, sorted);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRISetSpans(DrawablePtr dst, GCPtr pGC, char *pSrc,
            DDXPointPtr pptInit, int *pwidthInit,
            int nspans, int sorted)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->SetSpans(dst, pGC, pSrc, pptInit, pwidthInit, nspans, sorted);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPutImage(DrawablePtr dst, GCPtr pGC,
            int depth, int x, int y, int w, int h,
            int leftPad, int format, char *pBits)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PutImage(dst, pGC, depth, x, y, w, h, leftPad, format, pBits);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static RegionPtr
DRICopyArea(DrawablePtr pSrc, DrawablePtr dst, GCPtr pGC,
            int srcx, int srcy, int w, int h,
            int dstx, int dsty)
{
    RegionPtr pReg;
    DRISavedDrawableState pSrcSaved, dstSaved;

    DRISurfaceSetDrawable(pSrc, &pSrcSaved);
    DRISurfaceSetDrawable(dst, &dstSaved);

    DRIUnwrapGC(pGC);

    pReg = pGC->ops->CopyArea(pSrc, dst, pGC, srcx, srcy, w, h, dstx, dsty);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(pSrc, &pSrcSaved);
    DRISurfaceRestoreDrawable(dst, &dstSaved);

    return pReg;
}

static RegionPtr
DRICopyPlane(DrawablePtr pSrc, DrawablePtr dst,
             GCPtr pGC, int srcx, int srcy,
             int w, int h, int dstx, int dsty,
             unsigned long plane)
{
    RegionPtr pReg;
    DRISavedDrawableState pSrcSaved, dstSaved;

    DRISurfaceSetDrawable(pSrc, &pSrcSaved);
    DRISurfaceSetDrawable(dst, &dstSaved);

    DRIUnwrapGC(pGC);

    pReg = pGC->ops->CopyPlane(pSrc, dst, pGC, srcx, srcy, w, h, dstx, dsty,
                               plane);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(pSrc, &pSrcSaved);
    DRISurfaceRestoreDrawable(dst, &dstSaved);

    return pReg;
}

static void
DRIPolyPoint(DrawablePtr dst, GCPtr pGC,
             int mode, int npt, DDXPointPtr pptInit)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyPoint(dst, pGC, mode, npt, pptInit);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolylines(DrawablePtr dst, GCPtr pGC,
             int mode, int npt, DDXPointPtr pptInit)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->Polylines(dst, pGC, mode, npt, pptInit);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolySegment(DrawablePtr dst, GCPtr pGC,
               int nseg, xSegment *pSeg)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolySegment(dst, pGC, nseg, pSeg);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolyRectangle(DrawablePtr dst, GCPtr pGC,
                 int nRects, xRectangle *pRects)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyRectangle(dst, pGC, nRects, pRects);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}
static void
DRIPolyArc(DrawablePtr dst, GCPtr pGC, int narcs, xArc *parcs)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyArc(dst, pGC, narcs, parcs);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIFillPolygon(DrawablePtr dst, GCPtr pGC,
               int shape, int mode, int count,
               DDXPointPtr pptInit)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->FillPolygon(dst, pGC, shape, mode, count, pptInit);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolyFillRect(DrawablePtr dst, GCPtr pGC,
                int nRectsInit, xRectangle *pRectsInit)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyFillRect(dst, pGC, nRectsInit, pRectsInit);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolyFillArc(DrawablePtr dst, GCPtr pGC,
               int narcsInit, xArc *parcsInit)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyFillArc(dst, pGC, narcsInit, parcsInit);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static int
DRIPolyText8(DrawablePtr dst, GCPtr pGC,
             int x, int y, int count, char *chars)
{
    int ret;
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    ret = pGC->ops->PolyText8(dst, pGC, x, y, count, chars);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);

    return ret;
}

static int
DRIPolyText16(DrawablePtr dst, GCPtr pGC,
              int x, int y, int count, unsigned short *chars)
{
    int ret;
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    ret = pGC->ops->PolyText16(dst, pGC, x, y, count, chars);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);

    return ret;
}

static void
DRIImageText8(DrawablePtr dst, GCPtr pGC,
              int x, int y, int count, char *chars)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->ImageText8(dst, pGC, x, y, count, chars);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIImageText16(DrawablePtr dst, GCPtr pGC,
               int x, int y, int count, unsigned short *chars)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->ImageText16(dst, pGC, x, y, count, chars);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIImageGlyphBlt(DrawablePtr dst, GCPtr pGC,
                 int x, int y, unsigned int nglyphInit,
                 CharInfoPtr *ppciInit, pointer unused)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->ImageGlyphBlt(dst, pGC, x, y, nglyphInit, ppciInit, unused);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPolyGlyphBlt(DrawablePtr dst, GCPtr pGC,
                int x, int y, unsigned int nglyph,
                CharInfoPtr *ppci, pointer pglyphBase)
{
    DRISavedDrawableState saved;

    DRISurfaceSetDrawable(dst, &saved);

    DRIUnwrapGC(pGC);

    pGC->ops->PolyGlyphBlt(dst, pGC, x, y, nglyph, ppci, pglyphBase);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(dst, &saved);
}

static void
DRIPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr dst,
              int dx, int dy, int xOrg, int yOrg)
{
    DRISavedDrawableState bitMapSaved, dstSaved;

    DRISurfaceSetDrawable(&pBitMap->drawable, &bitMapSaved);
    DRISurfaceSetDrawable(dst, &dstSaved);

    DRIUnwrapGC(pGC);

    pGC->ops->PushPixels(pGC, pBitMap, dst, dx, dy, xOrg, yOrg);

    DRIWrapGC(pGC);

    DRISurfaceRestoreDrawable(&pBitMap->drawable, &bitMapSaved);
    DRISurfaceRestoreDrawable(dst, &dstSaved);
}

static GCOps driGCOps = {
    DRIFillSpans,
    DRISetSpans,
    DRIPutImage,
    DRICopyArea,
    DRICopyPlane,
    DRIPolyPoint,
    DRIPolylines,
    DRIPolySegment,
    DRIPolyRectangle,
    DRIPolyArc,
    DRIFillPolygon,
    DRIPolyFillRect,
    DRIPolyFillArc,
    DRIPolyText8,
    DRIPolyText16,
    DRIImageText8,
    DRIImageText16,
    DRIImageGlyphBlt,
    DRIPolyGlyphBlt,
    DRIPushPixels
};

static Bool
DRICreateGC(GCPtr pGC)
{
    ScreenPtr pScreen = pGC->pScreen;
    DRIWrapScreenRec *pScreenPriv;
    DRIGCRec *pGCPriv;
    Bool ret;

    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, driWrapScreenKey);

    pGCPriv = DRIGetGCPriv(pGC);

    unwrap(pScreenPriv, pScreen, CreateGC);
    ret = pScreen->CreateGC(pGC);

    if (ret) {
        pGCPriv->originalOps = pGC->ops;
        pGC->ops = &driGCOps;
    }

    wrap(pScreenPriv, pScreen, CreateGC, DRICreateGC);

    return ret;
}

/* Return false if an error occurred. */
Bool
DRIWrapInit(ScreenPtr pScreen)
{
    DRIWrapScreenRec *pScreenPriv;

    if (!dixRegisterPrivateKey(&driGCKeyRec, PRIVATE_GC, sizeof(DRIGCRec)))
        return FALSE;

    if (!dixRegisterPrivateKey(&driWrapScreenKeyRec, PRIVATE_SCREEN,
                               sizeof(DRIWrapScreenRec)))
        return FALSE;

    pScreenPriv = dixGetPrivateAddr(&pScreen->devPrivates,
                                    &driWrapScreenKeyRec);
    pScreenPriv->CreateGC = pScreen->CreateGC;
    pScreen->CreateGC = DRICreateGC;

    return TRUE;
}
Commit	Line	Data
	1	/*
	2	* Copyright (c) 2009-2012 Apple Inc. All rights reserved.
	3	*
	4	* Permission is hereby granted, free of charge, to any person
	5	* obtaining a copy of this software and associated documentation files
	6	* (the "Software"), to deal in the Software without restriction,
	7	* including without limitation the rights to use, copy, modify, merge,
	8	* publish, distribute, sublicense, and/or sell copies of the Software,
	9	* and to permit persons to whom the Software is furnished to do so,
	10	* subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice shall be
	13	* included in all copies or substantial portions of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	17	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	18	* NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
	19	* HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	20	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	22	* DEALINGS IN THE SOFTWARE.
	23	*
	24	* Except as contained in this notice, the name(s) of the above
	25	* copyright holders shall not be used in advertising or otherwise to
	26	* promote the sale, use or other dealings in this Software without
	27	* prior written authorization.
	28	*/
	29
	30	#ifdef HAVE_DIX_CONFIG_H
	31	#include <dix-config.h>
	32	#endif
	33
	34	#include <stddef.h>
	35	#include "mi.h"
	36	#include "scrnintstr.h"
	37	#include "gcstruct.h"
	38	#include "pixmapstr.h"
	39	#include "windowstr.h"
	40	#include "dixfontstr.h"
	41	#include "mivalidate.h"
	42	#include "driWrap.h"
	43	#include "dri.h"
	44
	45	#include <OpenGL/OpenGL.h>
	46
	47	typedef struct {
	48	GCOps *originalOps;
	49	} DRIGCRec;
	50
	51	typedef struct {
	52	GCOps *originalOps;
	53	CreateGCProcPtr CreateGC;
	54	} DRIWrapScreenRec;
	55
	56	typedef struct {
	57	Bool didSave;
	58	int devKind;
	59	DevUnion devPrivate;
	60	} DRISavedDrawableState;
	61
	62	static DevPrivateKeyRec driGCKeyRec;
	63	#define driGCKey (&driGCKeyRec)
	64
	65	static DevPrivateKeyRec driWrapScreenKeyRec;
	66	#define driWrapScreenKey (&driWrapScreenKeyRec)
	67
	68	static GCOps driGCOps;
	69
	70	#define wrap(priv, real, member, func) { \
	71	priv->member = real->member; \
	72	real->member = func; \
	73	}
	74
	75	#define unwrap(priv, real, member) { \
	76	real->member = priv->member; \
	77	}
	78
	79	static DRIGCRec *
	80	DRIGetGCPriv(GCPtr pGC)
	81	{
	82	return dixLookupPrivate(&pGC->devPrivates, driGCKey);
	83	}
	84
	85	static void
	86	DRIUnwrapGC(GCPtr pGC)
	87	{
	88	DRIGCRec *pGCPriv = DRIGetGCPriv(pGC);
	89
	90	pGC->ops = pGCPriv->originalOps;
	91	}
	92
	93	static void
	94	DRIWrapGC(GCPtr pGC)
	95	{
	96	pGC->ops = &driGCOps;
	97	}
	98
	99	static void
	100	DRISurfaceSetDrawable(DrawablePtr pDraw,
	101	DRISavedDrawableState *saved)
	102	{
	103	saved->didSave = FALSE;
	104
	105	if (pDraw->type == DRAWABLE_PIXMAP) {
	106	int pitch, width, height, bpp;
	107	void *buffer;
	108
	109	if (DRIGetPixmapData(pDraw, &width, &height, &pitch, &bpp,
	110	&buffer)) {
	111	PixmapPtr pPix = (PixmapPtr)pDraw;
	112
	113	saved->devKind = pPix->devKind;
	114	saved->devPrivate.ptr = pPix->devPrivate.ptr;
	115	saved->didSave = TRUE;
	116
	117	pPix->devKind = pitch;
	118	pPix->devPrivate.ptr = buffer;
	119	}
	120	}
	121	}
	122
	123	static void
	124	DRISurfaceRestoreDrawable(DrawablePtr pDraw,
	125	DRISavedDrawableState *saved)
	126	{
	127	PixmapPtr pPix = (PixmapPtr)pDraw;
	128
	129	if (!saved->didSave)
	130	return;
	131
	132	pPix->devKind = saved->devKind;
	133	pPix->devPrivate.ptr = saved->devPrivate.ptr;
	134	}
	135
	136	static void
	137	DRIFillSpans(DrawablePtr dst, GCPtr pGC, int nInit,
	138	DDXPointPtr pptInit, int *pwidthInit,
	139	int sorted)
	140	{
	141	DRISavedDrawableState saved;
	142
	143	DRISurfaceSetDrawable(dst, &saved);
	144
	145	DRIUnwrapGC(pGC);
	146
	147	pGC->ops->FillSpans(dst, pGC, nInit, pptInit, pwidthInit, sorted);
	148
	149	DRIWrapGC(pGC);
	150
	151	DRISurfaceRestoreDrawable(dst, &saved);
	152	}
	153
	154	static void
	155	DRISetSpans(DrawablePtr dst, GCPtr pGC, char *pSrc,
	156	DDXPointPtr pptInit, int *pwidthInit,
	157	int nspans, int sorted)
	158	{
	159	DRISavedDrawableState saved;
	160
	161	DRISurfaceSetDrawable(dst, &saved);
	162
	163	DRIUnwrapGC(pGC);
	164
	165	pGC->ops->SetSpans(dst, pGC, pSrc, pptInit, pwidthInit, nspans, sorted);
	166
	167	DRIWrapGC(pGC);
	168
	169	DRISurfaceRestoreDrawable(dst, &saved);
	170	}
	171
	172	static void
	173	DRIPutImage(DrawablePtr dst, GCPtr pGC,
	174	int depth, int x, int y, int w, int h,
	175	int leftPad, int format, char *pBits)
	176	{
	177	DRISavedDrawableState saved;
	178
	179	DRISurfaceSetDrawable(dst, &saved);
	180
	181	DRIUnwrapGC(pGC);
	182
	183	pGC->ops->PutImage(dst, pGC, depth, x, y, w, h, leftPad, format, pBits);
	184
	185	DRIWrapGC(pGC);
	186
	187	DRISurfaceRestoreDrawable(dst, &saved);
	188	}
	189
	190	static RegionPtr
	191	DRICopyArea(DrawablePtr pSrc, DrawablePtr dst, GCPtr pGC,
	192	int srcx, int srcy, int w, int h,
	193	int dstx, int dsty)
	194	{
	195	RegionPtr pReg;
	196	DRISavedDrawableState pSrcSaved, dstSaved;
	197
	198	DRISurfaceSetDrawable(pSrc, &pSrcSaved);
	199	DRISurfaceSetDrawable(dst, &dstSaved);
	200
	201	DRIUnwrapGC(pGC);
	202
	203	pReg = pGC->ops->CopyArea(pSrc, dst, pGC, srcx, srcy, w, h, dstx, dsty);
	204
	205	DRIWrapGC(pGC);
	206
	207	DRISurfaceRestoreDrawable(pSrc, &pSrcSaved);
	208	DRISurfaceRestoreDrawable(dst, &dstSaved);
	209
	210	return pReg;
	211	}
	212
	213	static RegionPtr
	214	DRICopyPlane(DrawablePtr pSrc, DrawablePtr dst,
	215	GCPtr pGC, int srcx, int srcy,
	216	int w, int h, int dstx, int dsty,
	217	unsigned long plane)
	218	{
	219	RegionPtr pReg;
	220	DRISavedDrawableState pSrcSaved, dstSaved;
	221
	222	DRISurfaceSetDrawable(pSrc, &pSrcSaved);
	223	DRISurfaceSetDrawable(dst, &dstSaved);
	224
	225	DRIUnwrapGC(pGC);
	226
	227	pReg = pGC->ops->CopyPlane(pSrc, dst, pGC, srcx, srcy, w, h, dstx, dsty,
	228	plane);
	229
	230	DRIWrapGC(pGC);
	231
	232	DRISurfaceRestoreDrawable(pSrc, &pSrcSaved);
	233	DRISurfaceRestoreDrawable(dst, &dstSaved);
	234
	235	return pReg;
	236	}
	237
	238	static void
	239	DRIPolyPoint(DrawablePtr dst, GCPtr pGC,
	240	int mode, int npt, DDXPointPtr pptInit)
	241	{
	242	DRISavedDrawableState saved;
	243
	244	DRISurfaceSetDrawable(dst, &saved);
	245
	246	DRIUnwrapGC(pGC);
	247
	248	pGC->ops->PolyPoint(dst, pGC, mode, npt, pptInit);
	249
	250	DRIWrapGC(pGC);
	251
	252	DRISurfaceRestoreDrawable(dst, &saved);
	253	}
	254
	255	static void
	256	DRIPolylines(DrawablePtr dst, GCPtr pGC,
	257	int mode, int npt, DDXPointPtr pptInit)
	258	{
	259	DRISavedDrawableState saved;
	260
	261	DRISurfaceSetDrawable(dst, &saved);
	262
	263	DRIUnwrapGC(pGC);
	264
	265	pGC->ops->Polylines(dst, pGC, mode, npt, pptInit);
	266
	267	DRIWrapGC(pGC);
	268
	269	DRISurfaceRestoreDrawable(dst, &saved);
	270	}
	271
	272	static void
	273	DRIPolySegment(DrawablePtr dst, GCPtr pGC,
	274	int nseg, xSegment *pSeg)
	275	{
	276	DRISavedDrawableState saved;
	277
	278	DRISurfaceSetDrawable(dst, &saved);
	279
	280	DRIUnwrapGC(pGC);
	281
	282	pGC->ops->PolySegment(dst, pGC, nseg, pSeg);
	283
	284	DRIWrapGC(pGC);
	285
	286	DRISurfaceRestoreDrawable(dst, &saved);
	287	}
	288
	289	static void
	290	DRIPolyRectangle(DrawablePtr dst, GCPtr pGC,
	291	int nRects, xRectangle *pRects)
	292	{
	293	DRISavedDrawableState saved;
	294
	295	DRISurfaceSetDrawable(dst, &saved);
	296
	297	DRIUnwrapGC(pGC);
	298
	299	pGC->ops->PolyRectangle(dst, pGC, nRects, pRects);
	300
	301	DRIWrapGC(pGC);
	302
	303	DRISurfaceRestoreDrawable(dst, &saved);
	304	}
	305	static void
	306	DRIPolyArc(DrawablePtr dst, GCPtr pGC, int narcs, xArc *parcs)
	307	{
	308	DRISavedDrawableState saved;
	309
	310	DRISurfaceSetDrawable(dst, &saved);
	311
	312	DRIUnwrapGC(pGC);
	313
	314	pGC->ops->PolyArc(dst, pGC, narcs, parcs);
	315
	316	DRIWrapGC(pGC);
	317
	318	DRISurfaceRestoreDrawable(dst, &saved);
	319	}
	320
	321	static void
	322	DRIFillPolygon(DrawablePtr dst, GCPtr pGC,
	323	int shape, int mode, int count,
	324	DDXPointPtr pptInit)
	325	{
	326	DRISavedDrawableState saved;
	327
	328	DRISurfaceSetDrawable(dst, &saved);
	329
	330	DRIUnwrapGC(pGC);
	331
	332	pGC->ops->FillPolygon(dst, pGC, shape, mode, count, pptInit);
	333
	334	DRIWrapGC(pGC);
	335
	336	DRISurfaceRestoreDrawable(dst, &saved);
	337	}
	338
	339	static void
	340	DRIPolyFillRect(DrawablePtr dst, GCPtr pGC,
	341	int nRectsInit, xRectangle *pRectsInit)
	342	{
	343	DRISavedDrawableState saved;
	344
	345	DRISurfaceSetDrawable(dst, &saved);
	346
	347	DRIUnwrapGC(pGC);
	348
	349	pGC->ops->PolyFillRect(dst, pGC, nRectsInit, pRectsInit);
	350
	351	DRIWrapGC(pGC);
	352
	353	DRISurfaceRestoreDrawable(dst, &saved);
	354	}
	355
	356	static void
	357	DRIPolyFillArc(DrawablePtr dst, GCPtr pGC,
	358	int narcsInit, xArc *parcsInit)
	359	{
	360	DRISavedDrawableState saved;
	361
	362	DRISurfaceSetDrawable(dst, &saved);
	363
	364	DRIUnwrapGC(pGC);
	365
	366	pGC->ops->PolyFillArc(dst, pGC, narcsInit, parcsInit);
	367
	368	DRIWrapGC(pGC);
	369
	370	DRISurfaceRestoreDrawable(dst, &saved);
	371	}
	372
	373	static int
	374	DRIPolyText8(DrawablePtr dst, GCPtr pGC,
	375	int x, int y, int count, char *chars)
	376	{
	377	int ret;
	378	DRISavedDrawableState saved;
	379
	380	DRISurfaceSetDrawable(dst, &saved);
	381
	382	DRIUnwrapGC(pGC);
	383
	384	ret = pGC->ops->PolyText8(dst, pGC, x, y, count, chars);
	385
	386	DRIWrapGC(pGC);
	387
	388	DRISurfaceRestoreDrawable(dst, &saved);
	389
	390	return ret;
	391	}
	392
	393	static int
	394	DRIPolyText16(DrawablePtr dst, GCPtr pGC,
	395	int x, int y, int count, unsigned short *chars)
	396	{
	397	int ret;
	398	DRISavedDrawableState saved;
	399
	400	DRISurfaceSetDrawable(dst, &saved);
	401
	402	DRIUnwrapGC(pGC);
	403
	404	ret = pGC->ops->PolyText16(dst, pGC, x, y, count, chars);
	405
	406	DRIWrapGC(pGC);
	407
	408	DRISurfaceRestoreDrawable(dst, &saved);
	409
	410	return ret;
	411	}
	412
	413	static void
	414	DRIImageText8(DrawablePtr dst, GCPtr pGC,
	415	int x, int y, int count, char *chars)
	416	{
	417	DRISavedDrawableState saved;
	418
	419	DRISurfaceSetDrawable(dst, &saved);
	420
	421	DRIUnwrapGC(pGC);
	422
	423	pGC->ops->ImageText8(dst, pGC, x, y, count, chars);
	424
	425	DRIWrapGC(pGC);
	426
	427	DRISurfaceRestoreDrawable(dst, &saved);
	428	}
	429
	430	static void
	431	DRIImageText16(DrawablePtr dst, GCPtr pGC,
	432	int x, int y, int count, unsigned short *chars)
	433	{
	434	DRISavedDrawableState saved;
	435
	436	DRISurfaceSetDrawable(dst, &saved);
	437
	438	DRIUnwrapGC(pGC);
	439
	440	pGC->ops->ImageText16(dst, pGC, x, y, count, chars);
	441
	442	DRIWrapGC(pGC);
	443
	444	DRISurfaceRestoreDrawable(dst, &saved);
	445	}
	446
	447	static void
	448	DRIImageGlyphBlt(DrawablePtr dst, GCPtr pGC,
	449	int x, int y, unsigned int nglyphInit,
	450	CharInfoPtr *ppciInit, pointer unused)
	451	{
	452	DRISavedDrawableState saved;
	453
	454	DRISurfaceSetDrawable(dst, &saved);
	455
	456	DRIUnwrapGC(pGC);
	457
	458	pGC->ops->ImageGlyphBlt(dst, pGC, x, y, nglyphInit, ppciInit, unused);
	459
	460	DRIWrapGC(pGC);
	461
	462	DRISurfaceRestoreDrawable(dst, &saved);
	463	}
	464
	465	static void
	466	DRIPolyGlyphBlt(DrawablePtr dst, GCPtr pGC,
	467	int x, int y, unsigned int nglyph,
	468	CharInfoPtr *ppci, pointer pglyphBase)
	469	{
	470	DRISavedDrawableState saved;
	471
	472	DRISurfaceSetDrawable(dst, &saved);
	473
	474	DRIUnwrapGC(pGC);
	475
	476	pGC->ops->PolyGlyphBlt(dst, pGC, x, y, nglyph, ppci, pglyphBase);
	477
	478	DRIWrapGC(pGC);
	479
	480	DRISurfaceRestoreDrawable(dst, &saved);
	481	}
	482
	483	static void
	484	DRIPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr dst,
	485	int dx, int dy, int xOrg, int yOrg)
	486	{
	487	DRISavedDrawableState bitMapSaved, dstSaved;
	488
	489	DRISurfaceSetDrawable(&pBitMap->drawable, &bitMapSaved);
	490	DRISurfaceSetDrawable(dst, &dstSaved);
	491
	492	DRIUnwrapGC(pGC);
	493
	494	pGC->ops->PushPixels(pGC, pBitMap, dst, dx, dy, xOrg, yOrg);
	495
	496	DRIWrapGC(pGC);
	497
	498	DRISurfaceRestoreDrawable(&pBitMap->drawable, &bitMapSaved);
	499	DRISurfaceRestoreDrawable(dst, &dstSaved);
	500	}
	501
	502	static GCOps driGCOps = {
	503	DRIFillSpans,
	504	DRISetSpans,
	505	DRIPutImage,
	506	DRICopyArea,
	507	DRICopyPlane,
	508	DRIPolyPoint,
	509	DRIPolylines,
	510	DRIPolySegment,
	511	DRIPolyRectangle,
	512	DRIPolyArc,
	513	DRIFillPolygon,
	514	DRIPolyFillRect,
	515	DRIPolyFillArc,
	516	DRIPolyText8,
	517	DRIPolyText16,
	518	DRIImageText8,
	519	DRIImageText16,
	520	DRIImageGlyphBlt,
	521	DRIPolyGlyphBlt,
	522	DRIPushPixels
	523	};
	524
	525	static Bool
	526	DRICreateGC(GCPtr pGC)
	527	{
	528	ScreenPtr pScreen = pGC->pScreen;
	529	DRIWrapScreenRec *pScreenPriv;
	530	DRIGCRec *pGCPriv;
	531	Bool ret;
	532
	533	pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, driWrapScreenKey);
	534
	535	pGCPriv = DRIGetGCPriv(pGC);
	536
	537	unwrap(pScreenPriv, pScreen, CreateGC);
	538	ret = pScreen->CreateGC(pGC);
	539
	540	if (ret) {
	541	pGCPriv->originalOps = pGC->ops;
	542	pGC->ops = &driGCOps;
	543	}
	544
	545	wrap(pScreenPriv, pScreen, CreateGC, DRICreateGC);
	546
	547	return ret;
	548	}
	549
	550	/* Return false if an error occurred. */
	551	Bool
	552	DRIWrapInit(ScreenPtr pScreen)
	553	{
	554	DRIWrapScreenRec *pScreenPriv;
	555
	556	if (!dixRegisterPrivateKey(&driGCKeyRec, PRIVATE_GC, sizeof(DRIGCRec)))
	557	return FALSE;
	558
	559	if (!dixRegisterPrivateKey(&driWrapScreenKeyRec, PRIVATE_SCREEN,
	560	sizeof(DRIWrapScreenRec)))
	561	return FALSE;
	562
	563	pScreenPriv = dixGetPrivateAddr(&pScreen->devPrivates,
	564	&driWrapScreenKeyRec);
	565	pScreenPriv->CreateGC = pScreen->CreateGC;
	566	pScreen->CreateGC = DRICreateGC;
	567
	568	return TRUE;
	569	}