xserver libX11 libxcb update 1/12/2010

1 files changed, 43 insertions, 19 deletions

diff --git a/xorg-server/hw/xfree86/modes/xf86Cursors.c b/xorg-server/hw/xfree86/modes/xf86Cursors.c
index 6886ad7b2..5562f29cc 100644
--- a/xorg-server/hw/xfree86/modes/xf86Cursors.c
+++ b/xorg-server/hw/xfree86/modes/xf86Cursors.c
@@ -1,5 +1,6 @@
 /*

  * Copyright © 2007 Keith Packard

+ * Copyright © 2010 Aaron Plattner

  *

  * Permission to use, copy, modify, distribute, and sell this software and its

  * documentation for any purpose is hereby granted without fee, provided that

@@ -126,12 +127,33 @@ xf86_crtc_rotate_coord_back (Rotation    rotation,
     *y_src = y_dst;

 }

 

+struct cursor_bit {

+    CARD8 *byte;

+    char bitpos;

+};

+

 /*

  * Convert an x coordinate to a position within the cursor bitmap

  */

-static int

-cursor_bitpos (int flags, int x, Bool mask)

+static struct cursor_bit

+cursor_bitpos (CARD8 *image, xf86CursorInfoPtr cursor_info, int x, int y,

+	       Bool mask)

 {

+    const int flags = cursor_info->Flags;

+    const Bool interleaved =

+	!!(flags & (HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1 |

+		    HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_8 |

+		    HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_16 |

+		    HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32 |

+		    HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64));

+    const int width = cursor_info->MaxWidth;

+    const int height = cursor_info->MaxHeight;

+    const int stride = interleaved ? width / 4 : width / 8;

+

+    struct cursor_bit ret;

+

+    image += y * stride;

+

     if (flags & HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK)

 	mask = !mask;

     if (flags & HARDWARE_CURSOR_NIBBLE_SWAPPED)

@@ -149,29 +171,33 @@ cursor_bitpos (int flags, int x, Bool mask)
 	x = ((x & ~31) << 1) | (mask << 5) | (x & 31);

     else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64)

 	x = ((x & ~63) << 1) | (mask << 6) | (x & 63);

-    return x;

+    else if (mask)

+	image += stride * height;

+

+    ret.byte = image + (x / 8);

+    ret.bitpos = x & 7;

+

+    return ret;

 }

 

 /*

  * Fetch one bit from a cursor bitmap

  */

 static CARD8

-get_bit (CARD8 *image, int stride, int flags, int x, int y, Bool mask)

+get_bit (CARD8 *image, xf86CursorInfoPtr cursor_info, int x, int y, Bool mask)

 {

-    x = cursor_bitpos (flags, x, mask);

-    image += y * stride;

-    return (image[(x >> 3)] >> (x & 7)) & 1;

+    struct cursor_bit bit = cursor_bitpos(image, cursor_info, x, y, mask);

+    return (*bit.byte >> bit.bitpos) & 1;

 }

 

 /*

  * Set one bit in a cursor bitmap

  */

 static void

-set_bit (CARD8 *image, int stride, int flags, int x, int y, Bool mask)

+set_bit (CARD8 *image, xf86CursorInfoPtr cursor_info, int x, int y, Bool mask)

 {

-    x = cursor_bitpos (flags, x, mask);

-    image += y * stride;

-    image[(x >> 3)] |= 1 << (x & 7);

+    struct cursor_bit bit = cursor_bitpos(image, cursor_info, x, y, mask);

+    *bit.byte |= 1 << bit.bitpos;

 }

     

 /*

@@ -186,7 +212,6 @@ xf86_crtc_convert_cursor_to_argb (xf86CrtcPtr crtc, unsigned char *src)
     CARD32		*cursor_image = (CARD32 *) xf86_config->cursor_image;

     int			x, y;

     int			xin, yin;

-    int			stride = cursor_info->MaxWidth >> 2;

     int			flags = cursor_info->Flags;

     CARD32		bits;

 

@@ -201,10 +226,10 @@ xf86_crtc_convert_cursor_to_argb (xf86CrtcPtr crtc, unsigned char *src)
 				    cursor_info->MaxWidth,

 				    cursor_info->MaxHeight,

 				    x, y, &xin, &yin);

-	    if (get_bit (src, stride, flags, xin, yin, TRUE) ==

+	    if (get_bit (src, cursor_info, xin, yin, TRUE) ==

 		((flags & HARDWARE_CURSOR_INVERT_MASK) == 0))

 	    {

-		if (get_bit (src, stride, flags, xin, yin, FALSE))

+		if (get_bit (src, cursor_info, xin, yin, FALSE))

 		    bits = xf86_config->cursor_fg;

 		else

 		    bits = xf86_config->cursor_bg;

@@ -407,7 +432,6 @@ xf86_crtc_load_cursor_image (xf86CrtcPtr crtc, CARD8 *src)
         int x, y;

     	int xin, yin;

 	int stride = cursor_info->MaxWidth >> 2;

-	int flags = cursor_info->Flags;

 	

 	cursor_image = xf86_config->cursor_image;

 	memset(cursor_image, 0, cursor_info->MaxHeight * stride);

@@ -419,10 +443,10 @@ xf86_crtc_load_cursor_image (xf86CrtcPtr crtc, CARD8 *src)
 					cursor_info->MaxWidth,

 					cursor_info->MaxHeight,

 					x, y, &xin, &yin);

-		if (get_bit(src, stride, flags, xin, yin, FALSE))

-		    set_bit(cursor_image, stride, flags, x, y, FALSE);

-		if (get_bit(src, stride, flags, xin, yin, TRUE))

-		    set_bit(cursor_image, stride, flags, x, y, TRUE);

+		if (get_bit(src, cursor_info, xin, yin, FALSE))

+		    set_bit(cursor_image, cursor_info, x, y, FALSE);

+		if (get_bit(src, cursor_info, xin, yin, TRUE))

+		    set_bit(cursor_image, cursor_info, x, y, TRUE);

 	    }

     }

     crtc->funcs->load_cursor_image (crtc, cursor_image);