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Use shadowUpdate32to24 at 24bpp

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Signed-off-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Adam Jackson
2017-01-05 14:36:51 -05:00
parent 3cf9923119
commit e0bce0d017
2 changed files with 43 additions and 6 deletions
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6
man/fbdev.man
View File

@@ -47,12 +47,14 @@ are supported:
The framebuffer device to use. Default: /dev/fb0.
.TP
.BI "Option \*qShadowFB\*q \*q" boolean \*q
Enable or disable use of the shadow framebuffer layer. Default: on.
Enable or disable use of the shadow framebuffer layer. Mandatory for 24bpp
framebuffers on newer servers. Default: on.
.TP
.BI "Option \*qRotate\*q \*q" string \*q
Enable rotation of the display. The supported values are "CW" (clockwise,
90 degrees), "UD" (upside down, 180 degrees) and "CCW" (counter clockwise,
270 degrees). Implies use of the shadow framebuffer layer. Default: off.
270 degrees). Implies use of the shadow framebuffer layer. Disabled for 24bpp
framebuffers. Default: off.
.SH "SEE ALSO"
__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), Xserver(__appmansuffix__),
X(__miscmansuffix__), fbdevhw(__drivermansuffix__)

43
src/fbdev.c
View File

@@ -41,6 +41,10 @@
/* for xf86{Depth,FbBpp}. i am a terrible person, and i am sorry. */
#include "xf86Priv.h"
#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) > 23
#define HAVE_SHADOW_3224
#endif
static Bool debug = 0;
#define TRACE_ENTER(str) \
@@ -181,6 +185,7 @@ typedef struct {
int lineLength;
int rotate;
Bool shadowFB;
Bool shadow24;
void *shadow;
CloseScreenProcPtr CloseScreen;
CreateScreenResourcesProcPtr CreateScreenResources;
@@ -482,6 +487,15 @@ FBDevPreInit(ScrnInfoPtr pScrn, int flags)
fbbpp = 32;
} while (0);
fPtr->shadow24 = FALSE;
#if HAVE_SHADOW_3224
/* okay but 24bpp is awful */
if (fbbpp == 24) {
fPtr->shadow24 = TRUE;
fbbpp = 32;
}
#endif
if (!xf86SetDepthBpp(pScrn, default_depth, default_depth, fbbpp,
Support24bppFb | Support32bppFb | SupportConvert32to24 | SupportConvert24to32))
return FALSE;
@@ -531,12 +545,18 @@ FBDevPreInit(ScrnInfoPtr pScrn, int flags)
/* use shadow framebuffer by default */
fPtr->shadowFB = xf86ReturnOptValBool(fPtr->Options, OPTION_SHADOW_FB, TRUE);
if (!fPtr->shadowFB && fPtr->shadow24) {
xf86DrvMsg(pScrn->scrnIndex, X_INFO,
"24bpp requires shadow framebuffer, forcing\n");
fPtr->shadowFB = TRUE;
}
debug = xf86ReturnOptValBool(fPtr->Options, OPTION_DEBUG, FALSE);
/* rotation */
fPtr->rotate = FBDEV_ROTATE_NONE;
if ((s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE)))
s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE);
if (s && !fPtr->shadow24)
{
if(!xf86NameCmp(s, "CW"))
{
@@ -657,6 +677,14 @@ FBDevPreInit(ScrnInfoPtr pScrn, int flags)
return TRUE;
}
static void
fbdevUpdate32to24(ScreenPtr pScreen, shadowBufPtr pBuf)
{
#ifdef HAVE_SHADOW_3224
shadowUpdate32to24(pScreen, pBuf);
#endif
}
static void
fbdevUpdateRotatePacked(ScreenPtr pScreen, shadowBufPtr pBuf)
{
@@ -676,6 +704,7 @@ FBDevCreateScreenResources(ScreenPtr pScreen)
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
FBDevPtr fPtr = FBDEVPTR(pScrn);
Bool ret;
void (*update)(ScreenPtr, shadowBufPtr);
pScreen->CreateScreenResources = fPtr->CreateScreenResources;
ret = pScreen->CreateScreenResources(pScreen);
@@ -686,9 +715,15 @@ FBDevCreateScreenResources(ScreenPtr pScreen)
pPixmap = pScreen->GetScreenPixmap(pScreen);
if (!shadowAdd(pScreen, pPixmap, fPtr->rotate ?
fbdevUpdateRotatePacked : fbdevUpdatePacked,
FBDevWindowLinear, fPtr->rotate, NULL)) {
if (fPtr->shadow24)
update = fbdevUpdate32to24;
else if (fPtr->rotate)
update = fbdevUpdateRotatePacked;
else
update = fbdevUpdatePacked;
if (!shadowAdd(pScreen, pPixmap, update, FBDevWindowLinear, fPtr->rotate,
NULL)) {
return FALSE;
}