static int
xf86RandR12ChangeGamma(int scrnIndex, Gamma gamma)
{
CARD16 *points, *red, *green, *blue;
ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
RRCrtcPtr crtc = config->output[config->compat_output]->crtc->randr_crtc;
int size = max(0, crtc->gammaSize);
if (!size)
return Success;
points = xcalloc(size, 3 * sizeof(CARD16));
if (!points)
return BadAlloc;
red = points;
green = points + size;
blue = points + 2 * size;
gamma_to_ramp(gamma.red, red, size);
gamma_to_ramp(gamma.green, green, size);
gamma_to_ramp(gamma.blue, blue, size);
RRCrtcGammaSet(crtc, red, green, blue);
xfree(points);
pScrn->gamma = gamma;
return Success;
}
int
ProcRRSetCrtcGamma (ClientPtr client)
{
REQUEST(xRRSetCrtcGammaReq);
RRCrtcPtr crtc;
unsigned long len;
CARD16 *red, *green, *blue;
REQUEST_AT_LEAST_SIZE(xRRSetCrtcGammaReq);
VERIFY_RR_CRTC(stuff->crtc, crtc, DixReadAccess);
len = client->req_len - bytes_to_int32(sizeof (xRRSetCrtcGammaReq));
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;
}
static int
xf86RandR12ChangeGamma(int scrnIndex, Gamma gamma)
{
CARD16 *points, *red, *green, *blue;
ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
RRCrtcPtr crtc = xf86CompatRRCrtc(pScrn);
int size;
if (!crtc)
return Success;
size = max(0, crtc->gammaSize);
if (!size)
return Success;
points = xcalloc(size, 3 * sizeof(CARD16));
if (!points)
return BadAlloc;
red = points;
green = points + size;
blue = points + 2 * size;
gamma_to_ramp(gamma.red, red, size);
gamma_to_ramp(gamma.green, green, size);
gamma_to_ramp(gamma.blue, blue, size);
RRCrtcGammaSet(crtc, red, green, blue);
xfree(points);
pScrn->gamma = gamma;
return Success;
}
