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xfree86/modes: Make colormap/gamma glue code work with RandR disabled 

E.g. because Xinerama is enabled.

Fixes crash on startup and wrong colours in that case.

Bugzilla: https://bugs.freedesktop.org/100293
Bugzilla: https://bugs.freedesktop.org/100294
Fixes: 62f4405257 ("xfree86/modes: Move gamma initialization to
                      xf86RandR12Init12 v2")
Tested-by: Mariusz Bialonczyk <manio@skyboo.net>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2017-04-12 17:58:05 +09:00 committed by Michel Dänzer
parent bcee1b76aa
commit 41dafcc2a2
1 changed files with 89 additions and 43 deletions
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132
hw/xfree86/modes/xf86RandR12.c
View File

@ -1246,33 +1246,50 @@ xf86RandR12CrtcSet(ScreenPtr pScreen,
}
static void
xf86RandR12CrtcComputeGamma(ScreenPtr pScreen, RRCrtcPtr randr_crtc)
xf86RandR12CrtcComputeGamma(xf86CrtcPtr crtc, LOCO *palette,
int palette_red_size, int palette_green_size,
int palette_blue_size, CARD16 *gamma_red,
CARD16 *gamma_green, CARD16 *gamma_blue,
int gamma_size)
{
XF86RandRInfoPtr randrp = XF86RANDRINFO(pScreen);
xf86CrtcPtr crtc = randr_crtc->devPrivate;
int gamma_slots;
CARD16 value;
unsigned shift;
CARD32 value;
int i, j;
gamma_slots = crtc->gamma_size / randrp->palette_red_size;
for (i = 0; i < randrp->palette_red_size; i++) {
value = randr_crtc->gammaRed[randrp->palette[i].red];
for (shift = 0; (gamma_size << shift) < (1 << 16); shift++);
gamma_slots = crtc->gamma_size / palette_red_size;
for (i = 0; i < palette_red_size; i++) {
value = palette[i].red;
if (gamma_red)
value = gamma_red[value];
else
value <<= shift;
for (j = 0; j < gamma_slots; j++)
crtc->gamma_red[i * gamma_slots + j] = value;
}
gamma_slots = crtc->gamma_size / randrp->palette_green_size;
for (i = 0; i < randrp->palette_green_size; i++) {
value = randr_crtc->gammaGreen[randrp->palette[i].green];
gamma_slots = crtc->gamma_size / palette_green_size;
for (i = 0; i < palette_green_size; i++) {
value = palette[i].green;
if (gamma_green)
value = gamma_green[value];
else
value <<= shift;
for (j = 0; j < gamma_slots; j++)
crtc->gamma_green[i * gamma_slots + j] = value;
}
gamma_slots = crtc->gamma_size / randrp->palette_blue_size;
for (i = 0; i < randrp->palette_blue_size; i++) {
value = randr_crtc->gammaBlue[randrp->palette[i].blue];
gamma_slots = crtc->gamma_size / palette_blue_size;
for (i = 0; i < palette_blue_size; i++) {
value = palette[i].blue;
if (gamma_blue)
value = gamma_blue[value];
else
value <<= shift;
for (j = 0; j < gamma_slots; j++)
crtc->gamma_blue[i * gamma_slots + j] = value;
@ -1280,10 +1297,8 @@ xf86RandR12CrtcComputeGamma(ScreenPtr pScreen, RRCrtcPtr randr_crtc)
}
static void
xf86RandR12CrtcReloadGamma(RRCrtcPtr randr_crtc)
xf86RandR12CrtcReloadGamma(xf86CrtcPtr crtc)
{
xf86CrtcPtr crtc = randr_crtc->devPrivate;
if (!crtc->scrn->vtSema || !crtc->funcs->gamma_set)
return;
@ -1305,7 +1320,14 @@ xf86RandR12CrtcSetGamma(ScreenPtr pScreen, RRCrtcPtr randr_crtc)
return FALSE;
if (randrp->palette_size) {
xf86RandR12CrtcComputeGamma(pScreen, randr_crtc);
xf86RandR12CrtcComputeGamma(crtc, randrp->palette,
randrp->palette_red_size,
randrp->palette_green_size,
randrp->palette_blue_size,
randr_crtc->gammaRed,
randr_crtc->gammaGreen,
randr_crtc->gammaBlue,
randr_crtc->gammaSize);
} else {
memcpy(crtc->gamma_red, randr_crtc->gammaRed,
crtc->gamma_size * sizeof(crtc->gamma_red[0]));
@ -1315,7 +1337,7 @@ xf86RandR12CrtcSetGamma(ScreenPtr pScreen, RRCrtcPtr randr_crtc)
crtc->gamma_size * sizeof(crtc->gamma_blue[0]));
}
xf86RandR12CrtcReloadGamma(randr_crtc);
xf86RandR12CrtcReloadGamma(crtc);
return TRUE;
}
@ -1390,6 +1412,13 @@ xf86RandR12OutputInitGamma(xf86OutputPtr output)
* different gamma
*/
if (gamma_red != 1.0 || gamma_green != 1.0 || gamma_blue != 1.0) {
if (!output->crtc->randr_crtc) {
xf86DrvMsg(output->scrn->scrnIndex, X_WARNING,
"Gamma correction for output %s not possible because "
"RandR is disabled\n", output->name);
return TRUE;
}
xf86DrvMsg(output->scrn->scrnIndex, X_INFO,
"Output %s wants gamma correction (%.1f, %.1f, %.1f)\n",
output->name, gamma_red, gamma_green, gamma_blue);
@ -1411,6 +1440,9 @@ xf86RandR12InitGamma(ScrnInfoPtr pScrn, unsigned gammaSize) {
for (c = 0; c < config->num_crtc; c++) {
xf86CrtcPtr crtc = config->crtc[c];
if (!crtc->randr_crtc)
continue;
if (!RRCrtcGammaSetSize(crtc->randr_crtc, gammaSize) ||
!xf86RandR12CrtcInitGamma(crtc, 1.0f, 1.0f, 1.0f))
return FALSE;
@ -1872,7 +1904,6 @@ xf86RandR12LoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
LOCO *colors, VisualPtr pVisual)
{
ScreenPtr pScreen = pScrn->pScreen;
XF86RandRInfoPtr randrp = XF86RANDRINFO(pScreen);
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
int reds, greens, blues, index, palette_size;
int c, i;
@ -1887,36 +1918,51 @@ xf86RandR12LoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
palette_size = max(reds, max(greens, blues));
if (randrp->palette_size != palette_size) {
randrp->palette = reallocarray(randrp->palette, palette_size,
sizeof(colors[0]));
if (!randrp->palette) {
randrp->palette_size = 0;
return;
if (dixPrivateKeyRegistered(rrPrivKey)) {
XF86RandRInfoPtr randrp = XF86RANDRINFO(pScreen);
if (randrp->palette_size != palette_size) {
randrp->palette = reallocarray(randrp->palette, palette_size,
sizeof(colors[0]));
if (!randrp->palette) {
randrp->palette_size = 0;
return;
}
randrp->palette_size = palette_size;
}
randrp->palette_red_size = reds;
randrp->palette_green_size = greens;
randrp->palette_blue_size = blues;
randrp->palette_size = palette_size;
}
randrp->palette_red_size = reds;
randrp->palette_green_size = greens;
randrp->palette_blue_size = blues;
for (i = 0; i < numColors; i++) {
index = indices[i];
for (i = 0; i < numColors; i++) {
index = indices[i];
if (index < reds)
randrp->palette[index].red = colors[index].red;
if (index < greens)
randrp->palette[index].green = colors[index].green;
if (index < blues)
randrp->palette[index].blue = colors[index].blue;
if (index < reds)
randrp->palette[index].red = colors[index].red;
if (index < greens)
randrp->palette[index].green = colors[index].green;
if (index < blues)
randrp->palette[index].blue = colors[index].blue;
}
}
for (c = 0; c < config->num_crtc; c++) {
RRCrtcPtr randr_crtc = config->crtc[c]->randr_crtc;
xf86CrtcPtr crtc = config->crtc[c];
RRCrtcPtr randr_crtc = crtc->randr_crtc;
xf86RandR12CrtcComputeGamma(pScreen, randr_crtc);
xf86RandR12CrtcReloadGamma(randr_crtc);
if (randr_crtc) {
xf86RandR12CrtcComputeGamma(crtc, colors, reds, greens, blues,
randr_crtc->gammaRed,
randr_crtc->gammaGreen,
randr_crtc->gammaBlue,
randr_crtc->gammaSize);
} else {
xf86RandR12CrtcComputeGamma(crtc, colors, reds, greens, blues,
NULL, NULL, NULL,
xf86GetGammaRampSize(pScreen));
}
xf86RandR12CrtcReloadGamma(crtc);
}
}
@ -1969,7 +2015,7 @@ xf86RandR12EnterVT(ScrnInfoPtr pScrn)
/* reload gamma */
for (i = 0; i < rp->numCrtcs; i++)
xf86RandR12CrtcReloadGamma(rp->crtcs[i]);
xf86RandR12CrtcReloadGamma(rp->crtcs[i]->devPrivate);
return RRGetInfo(pScreen, TRUE); /* force a re-probe of outputs and notify clients about changes */
}