Commit 62f44052 authored by Michel Dänzer's avatar Michel Dänzer Committed by Michel Dänzer

xfree86/modes: Move gamma initialization to xf86RandR12Init12 v2

RRCrtcGammaSetSize cannot be used yet in xf86InitialConfiguration,
because randr_crtc isn't allocated yet at that point, but a following
change will require RRCrtcGammaSetSize to be called from
xf86RandR12CrtcInitGamma.

v2:
* Bail from xf86RandR12CrtcInitGamma if !crtc->funcs->gamma_set (Keith
  Packard)
Reviewed-by: Keith Packard's avatarKeith Packard <keithp@keithp.com>
parent 0b2f3083
......@@ -2451,108 +2451,6 @@ xf86TargetUserpref(ScrnInfoPtr scrn, xf86CrtcConfigPtr config,
return FALSE;
}
static Bool
xf86CrtcSetInitialGamma(xf86CrtcPtr crtc, float gamma_red, float gamma_green,
float gamma_blue)
{
int i, size = 256;
CARD16 *red, *green, *blue;
red = xallocarray(size, 3 * sizeof(CARD16));
green = red + size;
blue = green + size;
/* Only cause warning if user wanted gamma to be set. */
if (!crtc->funcs->gamma_set &&
(gamma_red != 1.0 || gamma_green != 1.0 || gamma_blue != 1.0)) {
free(red);
return FALSE;
}
else if (!crtc->funcs->gamma_set) {
free(red);
return TRUE;
}
/* At this early stage none of the randr-interface stuff is up.
* So take the default gamma size for lack of something better.
*/
for (i = 0; i < size; i++) {
if (gamma_red == 1.0)
red[i] = i << 8;
else
red[i] = (CARD16) (pow((double) i / (double) (size - 1),
1. / (double) gamma_red) * (double) (size -
1) *
256);
if (gamma_green == 1.0)
green[i] = i << 8;
else
green[i] = (CARD16) (pow((double) i / (double) (size - 1),
1. / (double) gamma_green) *
(double) (size - 1) * 256);
if (gamma_blue == 1.0)
blue[i] = i << 8;
else
blue[i] = (CARD16) (pow((double) i / (double) (size - 1),
1. / (double) gamma_blue) * (double) (size -
1) *
256);
}
/* Default size is 256, so anything else is failure. */
if (size != crtc->gamma_size) {
free(red);
return FALSE;
}
crtc->gamma_size = size;
memcpy(crtc->gamma_red, red, crtc->gamma_size * sizeof(CARD16));
memcpy(crtc->gamma_green, green, crtc->gamma_size * sizeof(CARD16));
memcpy(crtc->gamma_blue, blue, crtc->gamma_size * sizeof(CARD16));
/* Do not set gamma now, delay until the crtc is activated. */
free(red);
return TRUE;
}
static Bool
xf86OutputSetInitialGamma(xf86OutputPtr output)
{
XF86ConfMonitorPtr mon = output->conf_monitor;
float gamma_red = 1.0, gamma_green = 1.0, gamma_blue = 1.0;
if (!mon)
return TRUE;
if (!output->crtc)
return FALSE;
/* Get configured values, where they exist. */
if (mon->mon_gamma_red >= GAMMA_MIN && mon->mon_gamma_red <= GAMMA_MAX)
gamma_red = mon->mon_gamma_red;
if (mon->mon_gamma_green >= GAMMA_MIN && mon->mon_gamma_green <= GAMMA_MAX)
gamma_green = mon->mon_gamma_green;
if (mon->mon_gamma_blue >= GAMMA_MIN && mon->mon_gamma_blue <= GAMMA_MAX)
gamma_blue = mon->mon_gamma_blue;
/* This avoids setting gamma 1.0 in case another cloned output on this crtc has a specific gamma. */
if (gamma_red != 1.0 || gamma_green != 1.0 || gamma_blue != 1.0) {
xf86DrvMsg(output->scrn->scrnIndex, X_INFO,
"Output %s wants gamma correction (%.1f, %.1f, %.1f)\n",
output->name, gamma_red, gamma_green, gamma_blue);
return xf86CrtcSetInitialGamma(output->crtc, gamma_red, gamma_green,
gamma_blue);
}
else
return TRUE;
}
/**
* Construct default screen configuration
*
......@@ -2672,15 +2570,8 @@ xf86InitialConfiguration(ScrnInfoPtr scrn, Bool canGrow)
crtc->enabled = FALSE;
memset(&crtc->desiredMode, '\0', sizeof(crtc->desiredMode));
/* Set default gamma for all crtc's. */
/* This is done to avoid problems later on with cloned outputs. */
xf86CrtcSetInitialGamma(crtc, 1.0, 1.0, 1.0);
}
if (xf86_crtc_supports_gamma(scrn))
xf86DrvMsg(scrn->scrnIndex, X_INFO,
"Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.\n");
/*
* Set initial configuration
*/
......@@ -2703,10 +2594,6 @@ xf86InitialConfiguration(ScrnInfoPtr scrn, Bool canGrow)
memcpy(crtc->panningBorder, output->initialBorder,
4 * sizeof(INT16));
output->crtc = crtc;
if (!xf86OutputSetInitialGamma(output))
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Initial gamma correction for output %s: failed.\n",
output->name);
}
else {
output->crtc = NULL;
......
......@@ -1313,6 +1313,116 @@ xf86RandR12CrtcGetGamma(ScreenPtr pScreen, RRCrtcPtr randr_crtc)
return TRUE;
}
static void
init_one_component(CARD16 *comp, unsigned size, unsigned shift, float gamma)
{
int i;
if (gamma == 1.0) {
for (i = 0; i < size; i++)
comp[i] = i << shift;
} else {
for (i = 0; i < size; i++)
comp[i] = (CARD16) (pow((double) i / (double) (size - 1),
1. / (double) gamma) *
(double) (size - 1) * (1 << shift));
}
}
static Bool
xf86RandR12CrtcInitGamma(xf86CrtcPtr crtc, float gamma_red, float gamma_green,
float gamma_blue)
{
unsigned size = crtc->randr_crtc->gammaSize, shift;
CARD16 *red, *green, *blue;
if (!crtc->funcs->gamma_set &&
(gamma_red != 1.0f || gamma_green != 1.0f || gamma_blue != 1.0f))
return FALSE;
red = xallocarray(size, 3 * sizeof(CARD16));
if (!red)
return FALSE;
green = red + size;
blue = green + size;
for (shift = 0; (size << shift) < (1 << 16); shift++);
init_one_component(red, size, shift, gamma_red);
init_one_component(green, size, shift, gamma_green);
init_one_component(blue, size, shift, gamma_blue);
RRCrtcGammaSet(crtc->randr_crtc, red, green, blue);
free(red);
return TRUE;
}
static Bool
xf86RandR12OutputInitGamma(xf86OutputPtr output)
{
XF86ConfMonitorPtr mon = output->conf_monitor;
float gamma_red = 1.0, gamma_green = 1.0, gamma_blue = 1.0;
if (!mon)
return TRUE;
/* Get configured values, where they exist. */
if (mon->mon_gamma_red >= GAMMA_MIN && mon->mon_gamma_red <= GAMMA_MAX)
gamma_red = mon->mon_gamma_red;
if (mon->mon_gamma_green >= GAMMA_MIN && mon->mon_gamma_green <= GAMMA_MAX)
gamma_green = mon->mon_gamma_green;
if (mon->mon_gamma_blue >= GAMMA_MIN && mon->mon_gamma_blue <= GAMMA_MAX)
gamma_blue = mon->mon_gamma_blue;
/* Don't set gamma 1.0 if another cloned output on this CRTC already set a
* different gamma
*/
if (gamma_red != 1.0 || gamma_green != 1.0 || gamma_blue != 1.0) {
xf86DrvMsg(output->scrn->scrnIndex, X_INFO,
"Output %s wants gamma correction (%.1f, %.1f, %.1f)\n",
output->name, gamma_red, gamma_green, gamma_blue);
return xf86RandR12CrtcInitGamma(output->crtc, gamma_red, gamma_green,
gamma_blue);
}
return TRUE;
}
static Bool
xf86RandR12InitGamma(ScrnInfoPtr pScrn, unsigned gammaSize) {
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
int o, c;
/* Set default gamma for all CRTCs
* This is done to avoid problems later on with cloned outputs
*/
for (c = 0; c < config->num_crtc; c++) {
xf86CrtcPtr crtc = config->crtc[c];
if (!RRCrtcGammaSetSize(crtc->randr_crtc, gammaSize) ||
!xf86RandR12CrtcInitGamma(crtc, 1.0f, 1.0f, 1.0f))
return FALSE;
}
/* Set initial gamma per monitor configuration
*/
for (o = 0; o < config->num_output; o++) {
xf86OutputPtr output = config->output[o];
if (output->crtc &&
!xf86RandR12OutputInitGamma(output))
xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
"Initial gamma correction for output %s: failed.\n",
output->name);
}
return TRUE;
}
static Bool
xf86RandR12OutputSetProperty(ScreenPtr pScreen,
RROutputPtr randr_output,
......@@ -1533,7 +1643,6 @@ xf86RandR12CreateObjects12(ScreenPtr pScreen)
xf86CrtcPtr crtc = config->crtc[c];
crtc->randr_crtc = RRCrtcCreate(pScreen, crtc);
RRCrtcGammaSetSize(crtc->randr_crtc, 256);
}
/*
* Configure outputs
......@@ -2011,6 +2120,10 @@ xf86RandR12Init12(ScreenPtr pScreen)
*/
if (!xf86RandR12SetInfo12(pScreen))
return FALSE;
if (!xf86RandR12InitGamma(pScrn, 256))
return FALSE;
for (i = 0; i < rp->numCrtcs; i++) {
xf86RandR12CrtcGetGamma(pScreen, rp->crtcs[i]);
}
......
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