Remove tightvnc-1.3dev5-vncviewer-alpha-cursor.patch.

tightvnc-1.3dev5-vncviewer-alpha-cursor.patch

---- vnc_unixsrc.orig/vncviewer/cursor.c	2003-01-15 04:46:52.000000000 -0500
-+++ vnc_unixsrc/vncviewer/cursor.c	2005-02-05 12:28:10.000000000 -0500
-@@ -472,6 +472,140 @@
-   int offset, bytesPerPixel;
-   char *pos;
- 
-+#define alphahack
-+#ifdef alphahack
-+  /* hack to have cursor transparency at 32bpp <runge@karlrunge.com> */
-+  static int alphablend = -1;
-+
-+  if (alphablend < 0) {
-+	/* you have to set NO_ALPHABLEND=1 in your environment to disable */
-+	if (getenv("NO_ALPHABLEND")) {
-+		alphablend = 0;
-+	} else {
-+		alphablend = 1;
-+	}
-+  }
-+
-+  bytesPerPixel = myFormat.bitsPerPixel / 8;
-+
-+  if (alphablend && bytesPerPixel == 4) {
-+	unsigned long pixel, put, *upos, *upix;
-+	int got_alpha = 0, rsX, rsY, rsW, rsH;
-+	static XImage *image = NULL;
-+	static int iwidth = 128;
-+
-+	if (! image) {
-+		/* watch out for tiny fb (rare) */
-+		if (iwidth > si.framebufferWidth) {
-+			iwidth = si.framebufferWidth;
-+		}
-+		if (iwidth > si.framebufferHeight) {
-+			iwidth = si.framebufferHeight;
-+		}
-+
-+		/* initialize an XImage with a chunk of desktopWin */
-+		image = XGetImage(dpy, desktopWin, 0, 0, iwidth, iwidth,
-+		    AllPlanes, ZPixmap);
-+	}
-+
-+	/* first check if there is any non-zero alpha channel data at all: */
-+	for (y = 0; y < rcHeight; y++) {
-+		for (x = 0; x < rcWidth; x++) {
-+			int alpha;
-+
-+			offset = y * rcWidth + x;
-+			pos = (char *)&rcSource[offset * bytesPerPixel];
-+
-+			upos = (unsigned long *) pos;
-+			alpha = (*upos & 0xff000000) >> 24;
-+			if (alpha) {
-+				got_alpha = 1;
-+				break;
-+			}
-+		}
-+		if (got_alpha) {
-+			break;
-+		}
-+	}
-+
-+	if (!got_alpha) {
-+		/* no alpha channel data, fallback to the old way */
-+		goto oldway;
-+	}
-+
-+	/* load the saved fb patch in to image (faster way?) */
-+	XGetSubImage(dpy, rcSavedArea, 0, 0, rcWidth, rcHeight,
-+	    AllPlanes, ZPixmap, image, 0, 0);
-+	upix = (unsigned long *)image->data;
-+
-+	/* if the richcursor is clipped, the fb patch will be smaller */
-+	rsW = rcWidth;
-+	rsX = 0;	/* used to denote a shift from the left side */
-+	x = rcCursorX - rcHotX;
-+	if (x < 0) {
-+		rsW += x;
-+		rsX = -x;
-+	} else if (x + rsW > si.framebufferWidth) {
-+		rsW = si.framebufferWidth - x;
-+	}
-+	rsH = rcHeight;
-+	rsY = 0;	/* used to denote a shift from the top side */
-+	y = rcCursorY - rcHotY;
-+	if (y < 0) {
-+		rsH += y;
-+		rsY = -y;
-+	} else if (y + rsH > si.framebufferHeight) {
-+		rsH = si.framebufferHeight - y;
-+	}
-+
-+	/*
-+	 * now loop over the cursor data, blend in the fb values,
-+	 * and then overwrite the fb (CopyDataToScreen())
-+	 */
-+	for (y = 0; y < rcHeight; y++) {
-+		y0 = rcCursorY - rcHotY + y;
-+		if (y0 < 0 || y0 >= si.framebufferHeight) {
-+			continue;	/* clipped */
-+		}
-+		for (x = 0; x < rcWidth; x++) {
-+			int alpha, color_curs, color_fb, i;
-+
-+			x0 = rcCursorX - rcHotX + x;
-+			if (x0 < 0 || x0 >= si.framebufferWidth) {
-+				continue;	/* clipped */
-+			}
-+
-+			offset = y * rcWidth + x;
-+			pos = (char *)&rcSource[offset * bytesPerPixel];
-+
-+			/* extract secret alpha byte from rich cursor: */
-+			upos = (unsigned long *) pos;
-+			alpha = (*upos & 0xff000000) >> 24;	/* XXX MSB? */
-+
-+			/* extract the pixel from the fb: */
-+			pixel = *(upix + (y-rsY)*iwidth + (x-rsX));
-+
-+			put = 0;
-+			/* for simplicity, blend all 4 bytes */
-+			for (i = 0; i < 4; i++) {
-+				int sh = i*8;
-+				color_curs = ((0xff << sh) & *upos) >> sh;
-+				color_fb   = ((0xff << sh) & pixel) >> sh;
-+
-+				/* XXX assumes pre-multipled color_curs */
-+				color_fb = color_curs
-+				    + ((0xff - alpha) * color_fb)/0xff;
-+				put |= color_fb << sh;
-+			}
-+			/* place in the fb: */
-+	    		CopyDataToScreen((char *)&put, x0, y0, 1, 1);
-+		}
-+	}
-+	return;
-+  }
-+oldway:
-+#endif
-+
-   bytesPerPixel = myFormat.bitsPerPixel / 8;
- 
-   /* FIXME: Speed optimization is possible. */