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-rw-r--r--xorg-server/hw/dmx/dmxgc.c419
1 files changed, 419 insertions, 0 deletions
diff --git a/xorg-server/hw/dmx/dmxgc.c b/xorg-server/hw/dmx/dmxgc.c
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+/*
+ * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ * Kevin E. Martin <kem@redhat.com>
+ *
+ */
+
+/** \file
+ * This file provides support for GCs. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#include "dmx.h"
+#include "dmxsync.h"
+#include "dmxgc.h"
+#include "dmxgcops.h"
+#include "dmxpixmap.h"
+#include "dmxfont.h"
+
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "migc.h"
+
+static GCFuncs dmxGCFuncs = {
+ dmxValidateGC,
+ dmxChangeGC,
+ dmxCopyGC,
+ dmxDestroyGC,
+ dmxChangeClip,
+ dmxDestroyClip,
+ dmxCopyClip,
+};
+
+static GCOps dmxGCOps = {
+ dmxFillSpans,
+ dmxSetSpans,
+ dmxPutImage,
+ dmxCopyArea,
+ dmxCopyPlane,
+ dmxPolyPoint,
+ dmxPolylines,
+ dmxPolySegment,
+ dmxPolyRectangle,
+ dmxPolyArc,
+ dmxFillPolygon,
+ dmxPolyFillRect,
+ dmxPolyFillArc,
+ dmxPolyText8,
+ dmxPolyText16,
+ dmxImageText8,
+ dmxImageText16,
+ dmxImageGlyphBlt,
+ dmxPolyGlyphBlt,
+ dmxPushPixels
+};
+
+/** Initialize the GC on \a pScreen */
+Bool dmxInitGC(ScreenPtr pScreen)
+{
+ return TRUE;
+}
+
+/** Create the GC on the back-end server. */
+void dmxBECreateGC(ScreenPtr pScreen, GCPtr pGC)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+ int i;
+
+ for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
+ if (pGC->depth == dmxScreen->bePixmapFormats[i].depth) {
+ unsigned long mask;
+ XGCValues gcvals;
+
+ mask = GCGraphicsExposures;
+ gcvals.graphics_exposures = FALSE;
+
+ /* Create GC in the back-end servers */
+ pGCPriv->gc = XCreateGC(dmxScreen->beDisplay,
+ dmxScreen->scrnDefDrawables[i],
+ mask, &gcvals);
+ break;
+ }
+ }
+}
+
+/** Create a graphics context on the back-end server associated /a pGC's
+ * screen. */
+Bool dmxCreateGC(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+ Bool ret;
+
+ DMX_UNWRAP(CreateGC, dmxScreen, pScreen);
+ if ((ret = pScreen->CreateGC(pGC))) {
+ /* Save the old funcs */
+ pGCPriv->funcs = pGC->funcs;
+ pGCPriv->ops = NULL;
+
+ pGC->funcs = &dmxGCFuncs;
+
+ if (dmxScreen->beDisplay) {
+ dmxBECreateGC(pScreen, pGC);
+ } else {
+ pGCPriv->gc = NULL;
+ }
+
+ /* Check for "magic special case"
+ * 1. see CreateGC in dix/gc.c for more info
+ * 2. see dmxChangeGC for more info
+ */
+ pGCPriv->msc = (!pGC->tileIsPixel && !pGC->tile.pixmap);
+ }
+ DMX_WRAP(CreateGC, dmxCreateGC, dmxScreen, pScreen);
+
+ return ret;
+}
+
+/** Validate a graphics context, \a pGC, locally in the DMX server and
+ * recompute the composite clip, if necessary. */
+void dmxValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
+{
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+
+ DMX_GC_FUNC_PROLOGUE(pGC);
+#if 0
+ pGC->funcs->ValidateGC(pGC, changes, pDrawable);
+#endif
+
+ if (pDrawable->type == DRAWABLE_WINDOW ||
+ pDrawable->type == DRAWABLE_PIXMAP) {
+ /* Save the old ops, since we're about to change the ops in the
+ * epilogue.
+ */
+ pGCPriv->ops = pGC->ops;
+ } else {
+ pGCPriv->ops = NULL;
+ }
+
+ /* If the client clip is different or moved OR the subwindowMode has
+ * changed OR the window's clip has changed since the last
+ * validation, then we need to recompute the composite clip.
+ */
+ if ((changes & (GCClipXOrigin |
+ GCClipYOrigin |
+ GCClipMask |
+ GCSubwindowMode)) ||
+ (pDrawable->serialNumber !=
+ (pGC->serialNumber & DRAWABLE_SERIAL_BITS))) {
+ miComputeCompositeClip(pGC, pDrawable);
+ }
+
+ DMX_GC_FUNC_EPILOGUE(pGC);
+}
+
+/** Set the values in the graphics context on the back-end server
+ * associated with \a pGC's screen. */
+void dmxChangeGC(GCPtr pGC, unsigned long mask)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+ XGCValues v;
+
+ DMX_GC_FUNC_PROLOGUE(pGC);
+#if 0
+ pGC->funcs->ChangeGC(pGC, mask);
+#endif
+
+ /* Handle "magic special case" from CreateGC */
+ if (pGCPriv->msc) {
+ /* The "magic special case" is used to handle the case where a
+ * foreground pixel is set when the GC is created so that a
+ * "pseudo default-tile" can be created and used in case the
+ * fillstyle was set to FillTiled. This specific case is tested
+ * in xtest (XCreateGC test #3). What has happened in dix by
+ * the time it reaches here is (1) the pGC->tile.pixel has been
+ * set to pGC->fgPixel and pGC->tileIsPixel is set, (2) if a
+ * tile has also been set, then pGC->tileIsPixel is unset and
+ * pGC->tile.pixmap is initialized; else, the default tile is
+ * created and pGC->tileIsPixel is unset and pGC->tile.pixmap is
+ * initialized to the "pseudo default-tile". In either case,
+ * pGC->tile.pixmap is set; however, in the "magic special case"
+ * the mask is not updated to allow us to detect that we should
+ * initialize the GCTile in the back-end server. Thus, we catch
+ * this case in dmxCreateGC and add GCTile to the mask here.
+ * Are there any cases that I've missed?
+ */
+
+ /* Make sure that the tile.pixmap is set, just in case the user
+ * set GCTile in the mask but forgot to set vals.pixmap
+ */
+ if (pGC->tile.pixmap) mask |= GCTile;
+
+ /* This only happens once when the GC is created */
+ pGCPriv->msc = FALSE;
+ }
+
+ /* Update back-end server's gc */
+ if (mask & GCFunction) v.function = pGC->alu;
+ if (mask & GCPlaneMask) v.plane_mask = pGC->planemask;
+ if (mask & GCForeground) v.foreground = pGC->fgPixel;
+ if (mask & GCBackground) v.background = pGC->bgPixel;
+ if (mask & GCLineWidth) v.line_width = pGC->lineWidth;
+ if (mask & GCLineStyle) v.line_style = pGC->lineStyle;
+ if (mask & GCCapStyle) v.cap_style = pGC->capStyle;
+ if (mask & GCJoinStyle) v.join_style = pGC->joinStyle;
+ if (mask & GCFillStyle) v.fill_style = pGC->fillStyle;
+ if (mask & GCFillRule) v.fill_rule = pGC->fillRule;
+ if (mask & GCTile) {
+ if (pGC->tileIsPixel) {
+ mask &= ~GCTile;
+ } else {
+ dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pGC->tile.pixmap);
+ v.tile = (Drawable)pPixPriv->pixmap;
+ }
+ }
+ if (mask & GCStipple) {
+ dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pGC->stipple);
+ v.stipple = (Drawable)pPixPriv->pixmap;
+ }
+ if (mask & GCTileStipXOrigin) v.ts_x_origin = pGC->patOrg.x;
+ if (mask & GCTileStipYOrigin) v.ts_y_origin = pGC->patOrg.y;
+ if (mask & GCFont) {
+ if (dmxScreen->beDisplay) {
+ dmxFontPrivPtr pFontPriv;
+ pFontPriv = FontGetPrivate(pGC->font, dmxFontPrivateIndex);
+ v.font = pFontPriv->font[pScreen->myNum]->fid;
+ } else {
+ mask &= ~GCFont;
+ }
+ }
+ if (mask & GCSubwindowMode) v.subwindow_mode = pGC->subWindowMode;
+
+ /* Graphics exposures are not needed on the back-ends since they can
+ be generated on the front-end thereby saving bandwidth. */
+ if (mask & GCGraphicsExposures) mask &= ~GCGraphicsExposures;
+
+ if (mask & GCClipXOrigin) v.clip_x_origin = pGC->clipOrg.x;
+ if (mask & GCClipYOrigin) v.clip_y_origin = pGC->clipOrg.y;
+ if (mask & GCClipMask) mask &= ~GCClipMask; /* See ChangeClip */
+ if (mask & GCDashOffset) v.dash_offset = pGC->dashOffset;
+ if (mask & GCDashList) {
+ mask &= ~GCDashList;
+ if (dmxScreen->beDisplay)
+ XSetDashes(dmxScreen->beDisplay, pGCPriv->gc,
+ pGC->dashOffset, (char *)pGC->dash,
+ pGC->numInDashList);
+ }
+ if (mask & GCArcMode) v.arc_mode = pGC->arcMode;
+
+ if (mask && dmxScreen->beDisplay) {
+ XChangeGC(dmxScreen->beDisplay, pGCPriv->gc, mask, &v);
+ dmxSync(dmxScreen, FALSE);
+ }
+
+ DMX_GC_FUNC_EPILOGUE(pGC);
+}
+
+/** Copy \a pGCSrc to \a pGCDst on the back-end server associated with
+ * \a pGCSrc's screen. */
+void dmxCopyGC(GCPtr pGCSrc, unsigned long changes, GCPtr pGCDst)
+{
+ ScreenPtr pScreen = pGCSrc->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCSrcPriv = DMX_GET_GC_PRIV(pGCSrc);
+ dmxGCPrivPtr pGCDstPriv = DMX_GET_GC_PRIV(pGCDst);
+
+ DMX_GC_FUNC_PROLOGUE(pGCDst);
+ pGCDst->funcs->CopyGC(pGCSrc, changes, pGCDst);
+
+ /* Copy the GC on the back-end server */
+ if (dmxScreen->beDisplay)
+ XCopyGC(dmxScreen->beDisplay, pGCSrcPriv->gc, changes, pGCDstPriv->gc);
+
+ DMX_GC_FUNC_EPILOGUE(pGCDst);
+}
+
+/** Free the \a pGC on the back-end server. */
+Bool dmxBEFreeGC(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+
+ if (pGCPriv->gc) {
+ XFreeGC(dmxScreen->beDisplay, pGCPriv->gc);
+ pGCPriv->gc = NULL;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/** Destroy the graphics context, \a pGC and free the corresponding GC
+ * on the back-end server. */
+void dmxDestroyGC(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+
+ DMX_GC_FUNC_PROLOGUE(pGC);
+
+ /* Free the GC on the back-end server */
+ if (dmxScreen->beDisplay)
+ dmxBEFreeGC(pGC);
+
+ pGC->funcs->DestroyGC(pGC);
+ DMX_GC_FUNC_EPILOGUE(pGC);
+}
+
+/** Change the clip rects for a GC. */
+void dmxChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+ XRectangle *pRects;
+ BoxPtr pBox;
+ int i, nRects;
+
+ DMX_GC_FUNC_PROLOGUE(pGC);
+ pGC->funcs->ChangeClip(pGC, type, pvalue, nrects);
+
+ /* Set the client clip on the back-end server */
+ switch (pGC->clientClipType) {
+ case CT_NONE:
+ if (dmxScreen->beDisplay)
+ XSetClipMask(dmxScreen->beDisplay, pGCPriv->gc, None);
+ break;
+
+ case CT_REGION:
+ if (dmxScreen->beDisplay) {
+ nRects = REGION_NUM_RECTS((RegionPtr)pGC->clientClip);
+ pRects = xalloc(nRects * sizeof(*pRects));
+ pBox = REGION_RECTS((RegionPtr)pGC->clientClip);
+
+ for (i = 0; i < nRects; i++) {
+ pRects[i].x = pBox[i].x1;
+ pRects[i].y = pBox[i].y1;
+ pRects[i].width = pBox[i].x2 - pBox[i].x1;
+ pRects[i].height = pBox[i].y2 - pBox[i].y1;
+ }
+
+ XSetClipRectangles(dmxScreen->beDisplay, pGCPriv->gc,
+ pGC->clipOrg.x, pGC->clipOrg.y,
+ pRects, nRects, Unsorted);
+
+ xfree(pRects);
+ }
+ break;
+
+ case CT_PIXMAP:
+ case CT_UNSORTED:
+ case CT_YSORTED:
+ case CT_YXSORTED:
+ case CT_YXBANDED:
+ /* These clip types are condensed down to either NONE or REGION
+ in the mi code */
+ break;
+ }
+
+ DMX_GC_FUNC_EPILOGUE(pGC);
+}
+
+/** Destroy a GC's clip rects. */
+void dmxDestroyClip(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC);
+
+ DMX_GC_FUNC_PROLOGUE(pGC);
+ pGC->funcs->DestroyClip(pGC);
+
+ /* Set the client clip on the back-end server to None */
+ if (dmxScreen->beDisplay)
+ XSetClipMask(dmxScreen->beDisplay, pGCPriv->gc, None);
+
+ DMX_GC_FUNC_EPILOGUE(pGC);
+}
+
+/** Copy a GC's clip rects. */
+void dmxCopyClip(GCPtr pGCDst, GCPtr pGCSrc)
+{
+ DMX_GC_FUNC_PROLOGUE(pGCDst);
+ pGCDst->funcs->CopyClip(pGCDst, pGCSrc);
+ DMX_GC_FUNC_EPILOGUE(pGCDst);
+}
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