--- /dev/null
+diff -Nurd xorg-server-1.3.0.0/hw/kdrive/fbdev/fbdev.c xorg-server-1.3.0.0.patched/hw/kdrive/fbdev/fbdev.c
+--- xorg-server-1.3.0.0/hw/kdrive/fbdev/fbdev.c 2006-11-16 19:01:23.000000000 +0100
++++ xorg-server-1.3.0.0.patched/hw/kdrive/fbdev/fbdev.c 2007-09-15 16:53:20.152045000 +0200
+@@ -213,6 +213,24 @@
+
+ /* Now get the new screeninfo */
+ ioctl (priv->fd, FBIOGET_VSCREENINFO, &priv->var);
++ /* Special treatment of 18bpp */
++ if ((priv->var.red.length == 6) && (priv->var.green.length == 6) &&
++ (priv->var.blue.length == 6))
++ {
++ priv->var.red.length = 8;
++ if (priv->var.red.offset != 0)
++ priv->var.red.offset = 16;
++ priv->var.green.length = 8;
++ priv->var.green.offset = 8;
++ priv->var.blue.length = 8;
++ if (priv->var.blue.offset != 0)
++ priv->var.blue.offset = 16;
++ priv->var.bits_per_pixel = 32;
++ priv->Have18Bpp = TRUE;
++ }
++ else
++ priv->Have18Bpp = FALSE;
++
+ depth = priv->var.bits_per_pixel;
+ gray = priv->var.grayscale;
+
+@@ -334,7 +352,7 @@
+ KdMouseMatrix m;
+ FbdevPriv *priv = screen->card->driver;
+
+- if (scrpriv->randr != RR_Rotate_0)
++ if (scrpriv->randr != RR_Rotate_0 || priv->Have18Bpp)
+ scrpriv->shadow = TRUE;
+ else
+ scrpriv->shadow = FALSE;
+@@ -398,6 +416,354 @@
+ return TRUE;
+ }
+
++void
++shadowUpdatePacked18 (ScreenPtr pScreen,
++ shadowBufPtr pBuf)
++{
++ RegionPtr damage = shadowDamage (pBuf);
++ PixmapPtr pShadow = pBuf->pPixmap;
++ int nbox = REGION_NUM_RECTS (damage);
++ BoxPtr pbox = REGION_RECTS (damage);
++ FbBits *shaBase, *shaLine, *sha;
++ FbStride shaStride;
++ int scrBase, scrLine, scr;
++ int shaBpp;
++ int shaXoff, shaYoff; /* XXX assumed to be zero */
++ int x, y, w, h, width;
++ int i;
++ char *winBase = NULL, *win;
++ CARD32 winSize;
++
++ fbGetDrawable (&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, shaYoff);
++ while (nbox--)
++ {
++ x = pbox->x1 * shaBpp;
++ y = pbox->y1;
++ w = (pbox->x2 - pbox->x1) * shaBpp;
++ h = pbox->y2 - pbox->y1;
++
++ scrLine = (x >> FB_SHIFT);
++ shaLine = shaBase + y * shaStride + (x >> FB_SHIFT);
++
++ x &= FB_MASK;
++ w = (w + x + FB_MASK) >> FB_SHIFT;
++
++ while (h--)
++ {
++ winSize = 0;
++ scrBase = 0;
++ width = w;
++ scr = scrLine;
++ sha = shaLine;
++ while (width) {
++ /* how much remains in this window */
++ i = scrBase + winSize - scr;
++ if (i <= 0 || scr < scrBase)
++ {
++ winBase = (char *) (*pBuf->window) (pScreen,
++ y,
++ scr * 3,
++ SHADOW_WINDOW_WRITE,
++ &winSize,
++ pBuf->closure);
++ if(!winBase)
++ return;
++ scrBase = scr;
++ winSize /= 3;
++ i = winSize;
++ }
++ win = winBase + (scr - scrBase);
++ if (i > width)
++ i = width;
++ width -= i;
++ scr += i;
++#define PickBit(a,i) (((a) >> (i)) & 1)
++ while (i--)
++ {
++ FbBits bits = *sha++;
++ *win++ = ((bits & 0xFC) >> 2) |
++ ((bits & 0xC00) >> 4);
++ *win++ = ((bits & 0xF000) >> 12) |
++ ((bits & 0x3C0000) >> 14);
++ *win++ = (bits & 0xC00000) >> 22;
++ }
++ }
++ shaLine += shaStride;
++ y++;
++ }
++ pbox++;
++ }
++}
++
++#define LEFT_TO_RIGHT 1
++#define RIGHT_TO_LEFT -1
++#define TOP_TO_BOTTOM 2
++#define BOTTOM_TO_TOP -2
++
++void
++shadowUpdateRotatePacked18 (ScreenPtr pScreen,
++ shadowBufPtr pBuf)
++{
++ RegionPtr damage = shadowDamage (pBuf);
++ PixmapPtr pShadow = pBuf->pPixmap;
++ int nbox = REGION_NUM_RECTS (damage);
++ BoxPtr pbox = REGION_RECTS (damage);
++ FbBits *shaBits;
++ FbStride shaStride;
++ int shaBpp;
++ int shaXoff, shaYoff;
++ int box_x1, box_x2, box_y1, box_y2;
++ int sha_x1 = 0, sha_y1 = 0;
++ int scr_x1 = 0, scr_x2 = 0, scr_y1 = 0, scr_y2 = 0, scr_w, scr_h;
++ int scr_x, scr_y;
++ int w;
++ int pixelsPerBits;
++ int pixelsMask;
++ FbStride shaStepOverY = 0, shaStepDownY = 0;
++ FbStride shaStepOverX = 0, shaStepDownX = 0;
++ FbBits *shaLine, *sha;
++ int shaHeight = pShadow->drawable.height;
++ int shaWidth = pShadow->drawable.width;
++ FbBits shaMask;
++ int shaFirstShift, shaShift;
++ int o_x_dir;
++ int o_y_dir;
++ int x_dir;
++ int y_dir;
++
++ fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff);
++ pixelsPerBits = (sizeof (FbBits) * 8) / shaBpp;
++ pixelsMask = ~(pixelsPerBits - 1);
++ shaMask = FbBitsMask (FB_UNIT-shaBpp, shaBpp);
++ /*
++ * Compute rotation related constants to walk the shadow
++ */
++ o_x_dir = LEFT_TO_RIGHT;
++ o_y_dir = TOP_TO_BOTTOM;
++ if (pBuf->randr & SHADOW_REFLECT_X)
++ o_x_dir = -o_x_dir;
++ if (pBuf->randr & SHADOW_REFLECT_Y)
++ o_y_dir = -o_y_dir;
++ switch (pBuf->randr & (SHADOW_ROTATE_ALL)) {
++ case SHADOW_ROTATE_0: /* upper left shadow -> upper left screen */
++ default:
++ x_dir = o_x_dir;
++ y_dir = o_y_dir;
++ break;
++ case SHADOW_ROTATE_90: /* upper right shadow -> upper left screen */
++ x_dir = o_y_dir;
++ y_dir = -o_x_dir;
++ break;
++ case SHADOW_ROTATE_180: /* lower right shadow -> upper left screen */
++ x_dir = -o_x_dir;
++ y_dir = -o_y_dir;
++ break;
++ case SHADOW_ROTATE_270: /* lower left shadow -> upper left screen */
++ x_dir = -o_y_dir;
++ y_dir = o_x_dir;
++ break;
++ }
++ switch (x_dir) {
++ case LEFT_TO_RIGHT:
++ shaStepOverX = shaBpp;
++ shaStepOverY = 0;
++ break;
++ case TOP_TO_BOTTOM:
++ shaStepOverX = 0;
++ shaStepOverY = shaStride;
++ break;
++ case RIGHT_TO_LEFT:
++ shaStepOverX = -shaBpp;
++ shaStepOverY = 0;
++ break;
++ case BOTTOM_TO_TOP:
++ shaStepOverX = 0;
++ shaStepOverY = -shaStride;
++ break;
++ }
++ switch (y_dir) {
++ case TOP_TO_BOTTOM:
++ shaStepDownX = 0;
++ shaStepDownY = shaStride;
++ break;
++ case RIGHT_TO_LEFT:
++ shaStepDownX = -shaBpp;
++ shaStepDownY = 0;
++ break;
++ case BOTTOM_TO_TOP:
++ shaStepDownX = 0;
++ shaStepDownY = -shaStride;
++ break;
++ case LEFT_TO_RIGHT:
++ shaStepDownX = shaBpp;
++ shaStepDownY = 0;
++ break;
++ }
++
++ while (nbox--)
++ {
++ box_x1 = pbox->x1;
++ box_y1 = pbox->y1;
++ box_x2 = pbox->x2;
++ box_y2 = pbox->y2;
++ pbox++;
++
++ /*
++ * Compute screen and shadow locations for this box
++ */
++ switch (x_dir) {
++ case LEFT_TO_RIGHT:
++ scr_x1 = box_x1 & pixelsMask;
++ scr_x2 = (box_x2 + pixelsPerBits - 1) & pixelsMask;
++
++ sha_x1 = scr_x1;
++ break;
++ case TOP_TO_BOTTOM:
++ scr_x1 = box_y1 & pixelsMask;
++ scr_x2 = (box_y2 + pixelsPerBits - 1) & pixelsMask;
++
++ sha_y1 = scr_x1;
++ break;
++ case RIGHT_TO_LEFT:
++ scr_x1 = (shaWidth - box_x2) & pixelsMask;
++ scr_x2 = (shaWidth - box_x1 + pixelsPerBits - 1) & pixelsMask;
++
++ sha_x1 = (shaWidth - scr_x1 - 1);
++ break;
++ case BOTTOM_TO_TOP:
++ scr_x1 = (shaHeight - box_y2) & pixelsMask;
++ scr_x2 = (shaHeight - box_y1 + pixelsPerBits - 1) & pixelsMask;
++
++ sha_y1 = (shaHeight - scr_x1 - 1);
++ break;
++ }
++ switch (y_dir) {
++ case TOP_TO_BOTTOM:
++ scr_y1 = box_y1;
++ scr_y2 = box_y2;
++
++ sha_y1 = scr_y1;
++ break;
++ case RIGHT_TO_LEFT:
++ scr_y1 = (shaWidth - box_x2);
++ scr_y2 = (shaWidth - box_x1);
++
++ sha_x1 = box_x2 - 1;
++ break;
++ case BOTTOM_TO_TOP:
++ scr_y1 = shaHeight - box_y2;
++ scr_y2 = shaHeight - box_y1;
++
++ sha_y1 = box_y2 - 1;
++ break;
++ case LEFT_TO_RIGHT:
++ scr_y1 = box_x1;
++ scr_y2 = box_x2;
++
++ sha_x1 = box_x1;
++ break;
++ }
++ scr_w = ((scr_x2 - scr_x1) * shaBpp) >> FB_SHIFT;
++ scr_h = scr_y2 - scr_y1;
++ scr_y = scr_y1;
++
++ /* shift amount for first pixel on screen */
++ shaFirstShift = FB_UNIT - ((sha_x1 * shaBpp) & FB_MASK) - shaBpp;
++
++ /* pointer to shadow data first placed on screen */
++ shaLine = (shaBits +
++ sha_y1 * shaStride +
++ ((sha_x1 * shaBpp) >> FB_SHIFT));
++
++ /*
++ * Copy the bits, always write across the physical frame buffer
++ * to take advantage of write combining.
++ */
++ while (scr_h--)
++ {
++ int p;
++ FbBits bits;
++ char *win;
++ int i;
++ CARD32 winSize;
++
++ sha = shaLine;
++ shaShift = shaFirstShift;
++ w = scr_w;
++ scr_x = scr_x1 * shaBpp >> FB_SHIFT;
++
++ while (w)
++ {
++ /*
++ * Map some of this line
++ */
++ win = (char *) (*pBuf->window) (pScreen,
++ scr_y,
++ scr_x * 3,
++ SHADOW_WINDOW_WRITE,
++ &winSize,
++ pBuf->closure);
++ i = winSize / 3;
++ if (i > w)
++ i = w;
++ w -= i;
++ scr_x += i;
++ /*
++ * Copy the portion of the line mapped
++ */
++ while (i--)
++ {
++ bits = 0;
++ p = pixelsPerBits;
++ /*
++ * Build one word of output from multiple inputs
++ *
++ * Note that for 90/270 rotations, this will walk
++ * down the shadow hitting each scanline once.
++ * This is probably not very efficient.
++ */
++ while (p--)
++ {
++ bits = FbScrLeft(bits, shaBpp);
++ bits |= FbScrRight (*sha, shaShift) & shaMask;
++
++ shaShift -= shaStepOverX;
++ if (shaShift >= FB_UNIT)
++ {
++ shaShift -= FB_UNIT;
++ sha--;
++ }
++ else if (shaShift < 0)
++ {
++ shaShift += FB_UNIT;
++ sha++;
++ }
++ sha += shaStepOverY;
++ }
++ *win++ = ((bits & 0xFC) >> 2) |
++ ((bits & 0xC00) >> 4);
++ *win++ = ((bits & 0xF000) >> 12) |
++ ((bits & 0x3C0000) >> 14);
++ *win++ = (bits & 0xC00000) >> 22;
++ }
++ }
++ scr_y++;
++ shaFirstShift -= shaStepDownX;
++ if (shaFirstShift >= FB_UNIT)
++ {
++ shaFirstShift -= FB_UNIT;
++ shaLine--;
++ }
++ else if (shaFirstShift < 0)
++ {
++ shaFirstShift += FB_UNIT;
++ shaLine++;
++ }
++ shaLine += shaStepDownY;
++ }
++ }
++}
++
+ Bool
+ fbdevSetShadow (ScreenPtr pScreen)
+ {
+@@ -418,7 +784,14 @@
+
+ window = fbdevWindowLinear;
+ update = 0;
+- if (scrpriv->randr)
++ if (priv->Have18Bpp)
++ {
++ if (scrpriv->randr != RR_Rotate_0)
++ update = shadowUpdateRotatePacked18;
++ else
++ update = shadowUpdatePacked18;
++ }
++ else if (scrpriv->randr)
+ if (priv->var.bits_per_pixel == 16) {
+ switch (scrpriv->randr) {
+ case RR_Rotate_90:
+diff -Nurd xorg-server-1.3.0.0/hw/kdrive/fbdev/fbdev.h xorg-server-1.3.0.0.patched/hw/kdrive/fbdev/fbdev.h
+--- xorg-server-1.3.0.0/hw/kdrive/fbdev/fbdev.h 2006-09-18 08:04:17.000000000 +0200
++++ xorg-server-1.3.0.0.patched/hw/kdrive/fbdev/fbdev.h 2007-09-15 16:45:07.362045000 +0200
+@@ -44,6 +44,7 @@
+ int fd;
+ char *fb;
+ char *fb_base;
++ Bool Have18Bpp;
+ } FbdevPriv;
+
+ typedef struct _fbdevScrPriv {
git.openpandora.org / openembedded.git / commitdiff