andreacavalli/xserver-multidpi
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Use transform when computing scanout size of modes

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Report transformed crtc sizes through RandR and Xinerama. Test screen size
against transformed mode sizes when configuring the Crtc.
This commit is contained in:
Keith Packard 2008-03-17 13:57:47 -07:00
parent f50349e193
commit 40f3dff6b3
1 changed files with 40 additions and 32 deletions
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72
randr/rrcrtc.c
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@ -528,30 +528,35 @@ RRCrtcGammaNotify (RRCrtcPtr crtc)
return TRUE; /* not much going on here */
}
static void
RRModeGetScanoutSize (RRModePtr mode, PictTransformPtr transform,
int *width, int *height)
{
BoxRec box;
if (mode == NULL) {
*width = 0;
*height = 0;
return;
}
box.x1 = 0;
box.y1 = 0;
box.x2 = mode->mode.width;
box.y2 = mode->mode.height;
PictureTransformBounds (&box, transform);
*width = box.x2 - box.x1;
*height = box.y2 - box.y1;
}
/**
* Returns the width/height that the crtc scans out from the framebuffer
*/
void
RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height)
{
if (crtc->mode == NULL) {
*width = 0;
*height = 0;
return;
}
switch (crtc->rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
*width = crtc->mode->mode.width;
*height = crtc->mode->mode.height;
break;
case RR_Rotate_90:
case RR_Rotate_270:
*width = crtc->mode->mode.height;
*height = crtc->mode->mode.width;
break;
}
return RRModeGetScanoutSize (crtc->mode, &crtc->transform, width, height);
}
/*
@ -1028,14 +1033,18 @@ ProcRRSetCrtcConfig (ClientPtr client)
*/
if (pScrPriv->rrScreenSetSize)
{
int source_width = mode->mode.width;
int source_height = mode->mode.height;
int source_width;
int source_height;
PictTransform transform, inverse;
if ((rotation & 0xf) == RR_Rotate_90 || (rotation & 0xf) == RR_Rotate_270)
{
source_width = mode->mode.height;
source_height = mode->mode.width;
}
if (!RRComputeTransform (mode, stuff->rotation,
stuff->x, stuff->y,
&crtc->client_pending_transform.transform,
&crtc->client_pending_transform.inverse,
&transform, &inverse))
return BadMatch;
RRModeGetScanoutSize (mode, &transform, &source_width, &source_height);
if (stuff->x + source_width > pScreen->width)
{
client->errorValue = stuff->x;
@ -1246,7 +1255,6 @@ transform_filter_encode (ClientPtr client, char *output,
CARD16 *nparamsFilter,
RRTransformPtr transform)
{
char *output_orig = output;
int nbytes, nparams;
int n;
@ -1260,17 +1268,17 @@ transform_filter_encode (ClientPtr client, char *output,
*nbytesFilter = nbytes;
*nparamsFilter = nparams;
memcpy (output, transform->filter->name, nbytes);
output += nbytes;
while ((nbytes & 3) != 0)
*output++ = 0;
memcpy (output, transform->params, nparams * sizeof (xFixed));
output[nbytes++] = 0;
memcpy (output + nbytes, transform->params, nparams * sizeof (xFixed));
if (client->swapped) {
swaps (nbytesFilter, n);
swaps (nparamsFilter, n);
SwapLongs ((CARD32 *) output, nparams * sizeof (xFixed));
SwapLongs ((CARD32 *) (output + nbytes),
nparams * sizeof (xFixed));
}
output += nparams * sizeof (xFixed);
return output - output_orig;
nbytes += nparams * sizeof (xFixed);
return nbytes;
}
static void