054f8cd267
Add function to keep pointer within valid crtc areas. Finish event delivery and swapping code. Separate configuration from layout changes to send correct events.
823 lines
19 KiB
C
823 lines
19 KiB
C
/*
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* Copyright © 2006 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "randrstr.h"
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#include "swaprep.h"
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RESTYPE RRCrtcType;
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/*
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* Notify the CRTC of some change
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*/
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void
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RRCrtcChanged (RRCrtcPtr crtc, Bool layoutChanged)
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{
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ScreenPtr pScreen = crtc->pScreen;
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rrScrPriv(pScreen);
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crtc->changed = TRUE;
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pScrPriv->changed = TRUE;
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/*
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* Send ConfigureNotify on any layout change
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*/
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if (layoutChanged)
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pScrPriv->layoutChanged = TRUE;
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}
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/*
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* Create a CRTC
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*/
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RRCrtcPtr
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RRCrtcCreate (ScreenPtr pScreen,
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void *devPrivate)
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{
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rrScrPriv (pScreen);
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RRCrtcPtr crtc;
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RRCrtcPtr *crtcs;
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crtc = xalloc (sizeof (RRCrtcRec));
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if (!crtc)
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return NULL;
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if (pScrPriv->numCrtcs)
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crtcs = xrealloc (pScrPriv->crtcs,
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(pScrPriv->numCrtcs + 1) * sizeof (RRCrtcPtr));
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else
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crtcs = xalloc (sizeof (RRCrtcPtr));
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if (!crtcs)
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{
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xfree (crtc);
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return NULL;
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}
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crtc->id = FakeClientID (0);
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crtc->pScreen = pScreen;
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crtc->mode = NULL;
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crtc->x = 0;
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crtc->y = 0;
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crtc->rotation = RR_Rotate_0;
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crtc->rotations = RR_Rotate_0;
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crtc->outputs = NULL;
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crtc->numOutputs = 0;
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crtc->gammaSize = 0;
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crtc->gammaRed = crtc->gammaBlue = crtc->gammaGreen = NULL;
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crtc->changed = FALSE;
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crtc->devPrivate = devPrivate;
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if (!AddResource (crtc->id, RRCrtcType, (pointer) crtc))
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return NULL;
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pScrPriv->crtcs = crtcs;
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pScrPriv->crtcs[pScrPriv->numCrtcs++] = crtc;
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RRCrtcChanged (crtc, TRUE);
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return crtc;
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}
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/*
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* Notify the extension that the Crtc has been reconfigured,
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* the driver calls this whenever it has updated the mode
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*/
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Bool
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RRCrtcNotify (RRCrtcPtr crtc,
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RRModePtr mode,
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int x,
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int y,
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Rotation rotation,
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int numOutputs,
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RROutputPtr *outputs)
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{
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int i, j;
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/*
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* Check to see if any of the new outputs were
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* not in the old list and mark them as changed
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*/
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for (i = 0; i < numOutputs; i++)
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{
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for (j = 0; j < crtc->numOutputs; j++)
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if (outputs[i] == crtc->outputs[j])
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break;
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if (j == crtc->numOutputs)
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{
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RROutputChanged (outputs[i]);
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RRCrtcChanged (crtc, FALSE);
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}
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}
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/*
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* Check to see if any of the old outputs are
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* not in the new list and mark them as changed
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*/
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for (j = 0; j < crtc->numOutputs; j++)
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{
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for (i = 0; i < numOutputs; i++)
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if (outputs[i] == crtc->outputs[j])
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break;
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if (i == numOutputs)
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{
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RROutputChanged (crtc->outputs[j]);
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RRCrtcChanged (crtc, FALSE);
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}
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}
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/*
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* Reallocate the crtc output array if necessary
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*/
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if (numOutputs != crtc->numOutputs)
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{
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RROutputPtr *newoutputs;
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if (numOutputs)
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{
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if (crtc->numOutputs)
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newoutputs = xrealloc (crtc->outputs,
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numOutputs * sizeof (RROutputPtr));
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else
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newoutputs = xalloc (numOutputs * sizeof (RROutputPtr));
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if (!newoutputs)
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return FALSE;
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}
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else
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{
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if (crtc->outputs)
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xfree (crtc->outputs);
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newoutputs = NULL;
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}
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crtc->outputs = newoutputs;
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crtc->numOutputs = numOutputs;
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}
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/*
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* Copy the new list of outputs into the crtc
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*/
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memcpy (crtc->outputs, outputs, numOutputs * sizeof (RROutputPtr));
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/*
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* Update remaining crtc fields
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*/
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if (mode != crtc->mode)
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{
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if (crtc->mode)
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RRModeDestroy (crtc->mode);
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crtc->mode = mode;
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mode->refcnt++;
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RRCrtcChanged (crtc, TRUE);
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}
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if (x != crtc->x)
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{
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crtc->x = x;
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RRCrtcChanged (crtc, TRUE);
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}
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if (y != crtc->y)
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{
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crtc->y = y;
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RRCrtcChanged (crtc, TRUE);
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}
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if (rotation != crtc->rotation)
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{
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crtc->rotation = rotation;
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RRCrtcChanged (crtc, TRUE);
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}
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return TRUE;
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}
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void
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RRDeliverCrtcEvent (ClientPtr client, WindowPtr pWin, RRCrtcPtr crtc)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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rrScrPriv (pScreen);
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xRRCrtcChangeNotifyEvent ce;
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RRModePtr mode = crtc->mode;
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ce.type = RRNotify + RREventBase;
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ce.subCode = RRNotify_CrtcChange;
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ce.sequenceNumber = client->sequence;
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ce.timestamp = pScrPriv->lastSetTime.milliseconds;
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ce.window = pWin->drawable.id;
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ce.crtc = crtc->id;
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ce.rotation = crtc->rotation;
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if (mode)
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{
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ce.mode = mode->mode.id;
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ce.x = crtc->x;
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ce.y = crtc->y;
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ce.width = mode->mode.width;
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ce.height = mode->mode.height;
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}
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else
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{
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ce.mode = None;
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ce.x = 0;
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ce.y = 0;
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ce.width = 0;
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ce.height = 0;
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}
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WriteEventsToClient (client, 1, (xEvent *) &ce);
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}
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/*
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* Request that the Crtc be reconfigured
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*/
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Bool
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RRCrtcSet (RRCrtcPtr crtc,
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RRModePtr mode,
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int x,
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int y,
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Rotation rotation,
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int numOutputs,
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RROutputConfigPtr outputs)
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{
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ScreenPtr pScreen = crtc->pScreen;
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rrScrPriv(pScreen);
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/* See if nothing changed */
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if (crtc->mode == mode &&
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crtc->x == x &&
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crtc->y == y &&
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crtc->rotation == rotation &&
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crtc->numOutputs == numOutputs &&
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!memcmp (crtc->outputs, outputs, numOutputs * sizeof (RROutputPtr)))
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{
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return TRUE;
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}
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#if RANDR_12_INTERFACE
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if (pScrPriv->rrCrtcSet)
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{
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return (*pScrPriv->rrCrtcSet) (pScreen, crtc, mode, x, y,
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rotation, numOutputs, outputs);
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}
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#endif
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#if RANDR_10_INTERFACE
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if (pScrPriv->rrSetConfig)
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{
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RRScreenSize size;
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RRScreenRate rate;
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Bool ret;
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size.width = mode->mode.width;
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size.height = mode->mode.height;
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size.mmWidth = mode->mode.mmWidth;
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size.mmHeight = mode->mode.mmHeight;
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size.nRates = 1;
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rate.rate = RRVerticalRefresh (&mode->mode);
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size.pRates = &rate;
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ret = (*pScrPriv->rrSetConfig) (pScreen, rotation, rate.rate, &size);
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/*
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* Old 1.0 interface tied screen size to mode size
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*/
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if (ret)
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RRCrtcNotify (crtc, mode, x, y, rotation,
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return ret;
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}
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#endif
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RRTellChanged (pScreen);
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return FALSE;
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}
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/*
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* Destroy a Crtc at shutdown
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*/
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void
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RRCrtcDestroy (RRCrtcPtr crtc)
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{
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FreeResource (crtc->id, 0);
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}
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static int
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RRCrtcDestroyResource (pointer value, XID pid)
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{
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RRCrtcPtr crtc = (RRCrtcPtr) value;
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ScreenPtr pScreen = crtc->pScreen;
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rrScrPriv(pScreen);
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int i;
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for (i = 0; i < pScrPriv->numCrtcs; i++)
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{
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if (pScrPriv->crtcs[i] == crtc)
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{
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memmove (pScrPriv->crtcs + i, pScrPriv->crtcs + i + 1,
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(pScrPriv->numCrtcs - (i - 1)) * sizeof (RRCrtcPtr));
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--pScrPriv->numCrtcs;
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break;
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}
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}
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if (crtc->gammaRed)
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xfree (crtc->gammaRed);
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xfree (value);
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return 1;
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}
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/*
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* Request that the Crtc gamma be changed
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*/
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Bool
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RRCrtcGammaSet (RRCrtcPtr crtc,
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CARD16 *red,
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CARD16 *green,
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CARD16 *blue)
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{
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Bool ret = TRUE;
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#if RANDR_12_INTERFACE
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ScreenPtr pScreen = crtc->pScreen;
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rrScrPriv(pScreen);
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#endif
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memcpy (crtc->gammaRed, red, crtc->gammaSize * sizeof (CARD16));
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memcpy (crtc->gammaGreen, green, crtc->gammaSize * sizeof (CARD16));
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memcpy (crtc->gammaBlue, blue, crtc->gammaSize * sizeof (CARD16));
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#if RANDR_12_INTERFACE
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if (pScrPriv->rrCrtcSetGamma)
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ret = (*pScrPriv->rrCrtcSetGamma) (pScreen, crtc);
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#endif
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return ret;
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}
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/*
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* Notify the extension that the Crtc gamma has been changed
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* The driver calls this whenever it has changed the gamma values
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* in the RRCrtcRec
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*/
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Bool
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RRCrtcGammaNotify (RRCrtcPtr crtc)
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{
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return TRUE; /* not much going on here */
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}
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/*
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* Set the size of the gamma table at server startup time
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*/
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Bool
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RRCrtcGammaSetSize (RRCrtcPtr crtc,
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int size)
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{
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CARD16 *gamma;
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if (size == crtc->gammaSize)
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return TRUE;
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if (size)
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{
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gamma = xalloc (size * 3 * sizeof (CARD16));
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if (!gamma)
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return FALSE;
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}
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else
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gamma = NULL;
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if (crtc->gammaRed)
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xfree (crtc->gammaRed);
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crtc->gammaRed = gamma;
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crtc->gammaGreen = gamma + size;
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crtc->gammaBlue = gamma + size*2;
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crtc->gammaSize = size;
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return TRUE;
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}
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/*
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* Initialize crtc type
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*/
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Bool
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RRCrtcInit (void)
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{
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RRCrtcType = CreateNewResourceType (RRCrtcDestroyResource);
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if (!RRCrtcType)
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return FALSE;
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#ifdef XResExtension
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RegisterResourceName (RRCrtcType, "CRTC");
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#endif
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return TRUE;
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}
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int
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ProcRRGetCrtcInfo (ClientPtr client)
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{
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REQUEST(xRRGetCrtcInfoReq);;
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xRRGetCrtcInfoReply rep;
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RRCrtcPtr crtc;
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CARD8 *extra;
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unsigned long extraLen;
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ScreenPtr pScreen;
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rrScrPrivPtr pScrPriv;
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RRModePtr mode;
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RROutput *outputs;
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RROutput *possible;
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int i, j, k, n;
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REQUEST_SIZE_MATCH(xRRGetCrtcInfoReq);
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crtc = LookupCrtc(client, stuff->crtc, SecurityReadAccess);
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if (!crtc)
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return RRErrorBase + BadRRCrtc;
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pScreen = crtc->pScreen;
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pScrPriv = rrGetScrPriv(pScreen);
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mode = crtc->mode;
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rep.type = X_Reply;
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rep.status = RRSetConfigSuccess;
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rep.sequenceNumber = client->sequence;
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rep.length = 0;
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rep.timestamp = pScrPriv->lastSetTime.milliseconds;
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rep.x = crtc->x;
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rep.y = crtc->y;
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rep.width = mode ? mode->mode.width : 0;
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rep.height = mode ? mode->mode.height : 0;
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rep.mode = mode ? mode->mode.id : 0;
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rep.rotation = crtc->rotation;
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rep.rotations = crtc->rotations;
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rep.nOutput = crtc->numOutputs;
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k = 0;
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for (i = 0; i < pScrPriv->numOutputs; i++)
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for (j = 0; j < pScrPriv->outputs[i]->numCrtcs; j++)
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if (pScrPriv->outputs[i]->crtcs[j] == crtc)
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k++;
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rep.nPossibleOutput = k;
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rep.length = rep.nOutput + rep.nPossibleOutput;
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extraLen = rep.length << 2;
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if (extraLen)
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{
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extra = xalloc (extraLen);
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if (!extra)
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return BadAlloc;
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}
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else
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extra = NULL;
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outputs = (RROutput *) extra;
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possible = (RROutput *) (outputs + rep.nOutput);
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for (i = 0; i < crtc->numOutputs; i++)
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{
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outputs[i] = crtc->outputs[i]->id;
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if (client->swapped)
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swapl (&outputs[i], n);
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}
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k = 0;
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for (i = 0; i < pScrPriv->numOutputs; i++)
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for (j = 0; j < pScrPriv->outputs[i]->numCrtcs; j++)
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if (pScrPriv->outputs[i]->crtcs[j] == crtc)
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{
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possible[k] = pScrPriv->outputs[i]->id;
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if (client->swapped)
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swapl (&possible[k], n);
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k++;
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}
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if (client->swapped) {
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swaps(&rep.sequenceNumber, n);
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swapl(&rep.length, n);
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swapl(&rep.timestamp, n);
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swaps(&rep.x, n);
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swaps(&rep.y, n);
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swaps(&rep.width, n);
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swaps(&rep.height, n);
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swapl(&rep.mode, n);
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swaps(&rep.rotation, n);
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swaps(&rep.rotations, n);
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swaps(&rep.nOutput, n);
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swaps(&rep.nPossibleOutput, n);
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}
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WriteToClient(client, sizeof(xRRGetCrtcInfoReply), (char *)&rep);
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if (extraLen)
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{
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WriteToClient (client, extraLen, (char *) extra);
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xfree (extra);
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}
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return client->noClientException;
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}
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|
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int
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ProcRRSetCrtcConfig (ClientPtr client)
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{
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REQUEST(xRRSetCrtcConfigReq);
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xRRSetCrtcConfigReply rep;
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ScreenPtr pScreen;
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rrScrPrivPtr pScrPriv;
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RRCrtcPtr crtc;
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RRModePtr mode;
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int numOutputs;
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RROutputConfigPtr outputs = NULL;
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xRROutputConfig *outputConfigs;
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TimeStamp configTime;
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TimeStamp time;
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Rotation rotation;
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int i, j;
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REQUEST_AT_LEAST_SIZE(xRRSetCrtcConfigReq);
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numOutputs = (stuff->length - (SIZEOF (xRRSetCrtcConfigReq) >> 2)) >> 1;
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crtc = LookupIDByType (stuff->crtc, RRCrtcType);
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if (!crtc)
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{
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client->errorValue = stuff->crtc;
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return RRErrorBase + BadRRCrtc;
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}
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if (stuff->mode == None)
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{
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mode = NULL;
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if (numOutputs > 0)
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return BadMatch;
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}
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else
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{
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mode = LookupIDByType (stuff->mode, RRModeType);
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if (!mode)
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{
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client->errorValue = stuff->mode;
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return RRErrorBase + BadRRMode;
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}
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if (numOutputs == 0)
|
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return BadMatch;
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}
|
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if (numOutputs)
|
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{
|
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outputs = xalloc (numOutputs * sizeof (RROutputConfigRec));
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if (!outputs)
|
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return BadAlloc;
|
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}
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else
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outputs = NULL;
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|
|
outputConfigs = (xRROutputConfig *) (stuff + 1);
|
|
for (i = 0; i < numOutputs; i++)
|
|
{
|
|
outputs[i].output = LookupIDByType (outputConfigs[i].output, RROutputType);
|
|
if (!outputs[i].output)
|
|
{
|
|
client->errorValue = outputConfigs[i].output;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return RRErrorBase + BadRROutput;
|
|
}
|
|
outputs[i].options = outputConfigs[i].options;
|
|
if (outputs[i].options & ~outputs[i].output->possibleOptions)
|
|
{
|
|
client->errorValue = outputConfigs[i].options;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadMatch;
|
|
}
|
|
/* validate crtc for this output */
|
|
for (j = 0; j < outputs[i].output->numCrtcs; j++)
|
|
if (outputs[i].output->crtcs[j] == crtc)
|
|
break;
|
|
if (j == outputs[j].output->numCrtcs)
|
|
{
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadMatch;
|
|
}
|
|
/* validate mode for this output */
|
|
for (j = 0; j < outputs[i].output->numModes; j++)
|
|
if (outputs[i].output->modes[j] == mode)
|
|
break;
|
|
if (j == outputs[i].output->numModes)
|
|
{
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadMatch;
|
|
}
|
|
}
|
|
|
|
pScreen = crtc->pScreen;
|
|
pScrPriv = rrGetScrPriv(pScreen);
|
|
|
|
if (!RRGetInfo (pScreen))
|
|
{
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadAlloc;
|
|
}
|
|
|
|
time = ClientTimeToServerTime(stuff->timestamp);
|
|
configTime = ClientTimeToServerTime(stuff->configTimestamp);
|
|
|
|
if (!pScrPriv)
|
|
{
|
|
time = currentTime;
|
|
rep.status = RRSetConfigFailed;
|
|
goto sendReply;
|
|
}
|
|
|
|
/*
|
|
* if the client's config timestamp is not the same as the last config
|
|
* timestamp, then the config information isn't up-to-date and
|
|
* can't even be validated
|
|
*/
|
|
if (CompareTimeStamps (configTime, pScrPriv->lastConfigTime) != 0)
|
|
{
|
|
rep.status = RRSetConfigInvalidConfigTime;
|
|
goto sendReply;
|
|
}
|
|
|
|
/*
|
|
* Validate requested rotation
|
|
*/
|
|
rotation = (Rotation) stuff->rotation;
|
|
|
|
/* test the rotation bits only! */
|
|
switch (rotation & 0xf) {
|
|
case RR_Rotate_0:
|
|
case RR_Rotate_90:
|
|
case RR_Rotate_180:
|
|
case RR_Rotate_270:
|
|
break;
|
|
default:
|
|
/*
|
|
* Invalid rotation
|
|
*/
|
|
client->errorValue = stuff->rotation;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadValue;
|
|
}
|
|
|
|
if (mode)
|
|
{
|
|
if ((~crtc->rotations) & rotation)
|
|
{
|
|
/*
|
|
* requested rotation or reflection not supported by screen
|
|
*/
|
|
client->errorValue = stuff->rotation;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadMatch;
|
|
}
|
|
|
|
#ifdef RANDR_12_INTERFACE
|
|
/*
|
|
* Check screen size bounds if the DDX provides a 1.2 interface
|
|
* for setting screen size. Else, assume the CrtcSet sets
|
|
* the size along with the mode
|
|
*/
|
|
if (pScrPriv->rrScreenSetSize)
|
|
{
|
|
if (stuff->x + mode->mode.width > pScreen->width)
|
|
{
|
|
client->errorValue = stuff->x;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadValue;
|
|
}
|
|
|
|
if (stuff->y + mode->mode.height > pScreen->height)
|
|
{
|
|
client->errorValue = stuff->y;
|
|
if (outputs)
|
|
xfree (outputs);
|
|
return BadValue;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Make sure the requested set-time is not older than
|
|
* the last set-time
|
|
*/
|
|
if (CompareTimeStamps (time, pScrPriv->lastSetTime) < 0)
|
|
{
|
|
rep.status = RRSetConfigInvalidTime;
|
|
goto sendReply;
|
|
}
|
|
|
|
if (!RRCrtcSet (crtc, mode, stuff->x, stuff->y,
|
|
rotation, numOutputs, outputs))
|
|
{
|
|
rep.status = RRSetConfigFailed;
|
|
goto sendReply;
|
|
}
|
|
rep.status = RRSetConfigSuccess;
|
|
|
|
sendReply:
|
|
if (outputs)
|
|
xfree (outputs);
|
|
|
|
rep.type = X_Reply;
|
|
/* rep.status has already been filled in */
|
|
rep.length = 0;
|
|
rep.sequenceNumber = client->sequence;
|
|
rep.newTimestamp = pScrPriv->lastConfigTime.milliseconds;
|
|
|
|
if (client->swapped)
|
|
{
|
|
int n;
|
|
swaps(&rep.sequenceNumber, n);
|
|
swapl(&rep.length, n);
|
|
swapl(&rep.newTimestamp, n);
|
|
}
|
|
WriteToClient(client, sizeof(xRRSetCrtcConfigReply), (char *)&rep);
|
|
|
|
return client->noClientException;
|
|
}
|
|
|
|
int
|
|
ProcRRGetCrtcGammaSize (ClientPtr client)
|
|
{
|
|
REQUEST(xRRGetCrtcGammaSizeReq);
|
|
xRRGetCrtcGammaSizeReply reply;
|
|
RRCrtcPtr crtc;
|
|
int n;
|
|
|
|
REQUEST_SIZE_MATCH(xRRGetCrtcGammaSizeReq);
|
|
crtc = LookupCrtc (client, stuff->crtc, SecurityReadAccess);
|
|
if (!crtc)
|
|
return RRErrorBase + BadRRCrtc;
|
|
|
|
reply.type = X_Reply;
|
|
reply.sequenceNumber = client->sequence;
|
|
reply.length = 0;
|
|
reply.size = crtc->gammaSize;
|
|
if (client->swapped) {
|
|
swaps (&reply.sequenceNumber, n);
|
|
swapl (&reply.length, n);
|
|
swaps (&reply.size, n);
|
|
}
|
|
WriteToClient (client, sizeof (xRRGetCrtcGammaSizeReply), (char *) &reply);
|
|
return client->noClientException;
|
|
}
|
|
|
|
int
|
|
ProcRRGetCrtcGamma (ClientPtr client)
|
|
{
|
|
REQUEST(xRRGetCrtcGammaReq);
|
|
xRRGetCrtcGammaReply reply;
|
|
RRCrtcPtr crtc;
|
|
int n;
|
|
unsigned long len;
|
|
|
|
REQUEST_SIZE_MATCH(xRRGetCrtcGammaReq);
|
|
crtc = LookupCrtc (client, stuff->crtc, SecurityReadAccess);
|
|
if (!crtc)
|
|
return RRErrorBase + BadRRCrtc;
|
|
|
|
len = crtc->gammaSize * 3 * 2;
|
|
|
|
reply.type = X_Reply;
|
|
reply.sequenceNumber = client->sequence;
|
|
reply.length = (len + 3) >> 2;
|
|
reply.size = crtc->gammaSize;
|
|
if (client->swapped) {
|
|
swaps (&reply.sequenceNumber, n);
|
|
swapl (&reply.length, n);
|
|
swaps (&reply.size, n);
|
|
}
|
|
WriteToClient (client, sizeof (xRRGetCrtcGammaReply), (char *) &reply);
|
|
if (crtc->gammaSize)
|
|
{
|
|
client->pSwapReplyFunc = (ReplySwapPtr)CopySwap16Write;
|
|
WriteSwappedDataToClient (client, len, (char *) crtc->gammaRed);
|
|
}
|
|
return client->noClientException;
|
|
}
|
|
|
|
int
|
|
ProcRRSetCrtcGamma (ClientPtr client)
|
|
{
|
|
REQUEST(xRRSetCrtcGammaReq);
|
|
RRCrtcPtr crtc;
|
|
unsigned long len;
|
|
CARD16 *red, *green, *blue;
|
|
|
|
REQUEST_SIZE_MATCH(xRRSetCrtcGammaReq);
|
|
crtc = LookupCrtc (client, stuff->crtc, SecurityWriteAccess);
|
|
if (!crtc)
|
|
return RRErrorBase + BadRRCrtc;
|
|
|
|
len = client->req_len - (sizeof (xRRSetCrtcGammaReq) >> 2);
|
|
if (len < (stuff->size * 3 + 1) >> 1)
|
|
return BadLength;
|
|
|
|
if (stuff->size != crtc->gammaSize)
|
|
return BadMatch;
|
|
|
|
red = (CARD16 *) (stuff + 1);
|
|
green = red + crtc->gammaSize;
|
|
blue = green + crtc->gammaSize;
|
|
|
|
RRCrtcGammaSet (crtc, red, green, blue);
|
|
|
|
return Success;
|
|
}
|
|
|