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Set visual depth to 24 for 32 bits-per-pixel devices on Win32. This allows

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2005-10-13  Tor Lillqvist  <tml@novell.com>

	Set visual depth to 24 for 32 bits-per-pixel devices on
	Win32. This allows gdk_drawable_real_draw_pixbuf() to use the
	optimized composite_0888() function rather than the slower image
	dithering functions to draw pixbufs (#313993, John Ehresman)

	* gdk/win32/gdkimage-win32.c (_gdk_win32_new_image): Use
	_gdk_windowing_get_bits_for_depth() to initialize
	GdkImage::bits_per_pixel.
	(_gdk_windowing_get_bits_for_depth): Return 32 bits for depth 24.

	* gdk/win32/gdkpixmap-win32.c (gdk_pixmap_new): Use
	_gdk_windowing_get_bits_for_depth() to initialize
	BITMAPINFOHEADER::biBitCount.

	* gdk/win32/gdkvisual-win32.c (_gdk_visual_init): Set
	GdkVisual::depth to 24 even if GetDeviceCaps(BITSPIXEL) returns
	32.
This commit is contained in:
Tor Lillqvist 2005-10-13 07:08:49 +00:00 committed by Tor Lillqvist
parent e3bf16ec14
commit b25e6c5b05
5 changed files with 44 additions and 5 deletions
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20
ChangeLog
View File

@ -1,3 +1,23 @@
2005-10-13 Tor Lillqvist <tml@novell.com>
Set visual depth to 24 for 32 bits-per-pixel devices on
Win32. This allows gdk_drawable_real_draw_pixbuf() to use the
optimized composite_0888() function rather than the slower image
dithering functions to draw pixbufs (#313993, John Ehresman)
* gdk/win32/gdkimage-win32.c (_gdk_win32_new_image): Use
_gdk_windowing_get_bits_for_depth() to initialize
GdkImage::bits_per_pixel.
(_gdk_windowing_get_bits_for_depth): Return 32 bits for depth 24.
* gdk/win32/gdkpixmap-win32.c (gdk_pixmap_new): Use
_gdk_windowing_get_bits_for_depth() to initialize
BITMAPINFOHEADER::biBitCount.
* gdk/win32/gdkvisual-win32.c (_gdk_visual_init): Set
GdkVisual::depth to 24 even if GetDeviceCaps(BITSPIXEL) returns
32.
2005-10-12 Stefan Kost <ensonic@users.sf.net>
* demos/gtk-demo/appwindow.c: (about_cb):

20
ChangeLog.pre-2-10
View File

@ -1,3 +1,23 @@
2005-10-13 Tor Lillqvist <tml@novell.com>
Set visual depth to 24 for 32 bits-per-pixel devices on
Win32. This allows gdk_drawable_real_draw_pixbuf() to use the
optimized composite_0888() function rather than the slower image
dithering functions to draw pixbufs (#313993, John Ehresman)
* gdk/win32/gdkimage-win32.c (_gdk_win32_new_image): Use
_gdk_windowing_get_bits_for_depth() to initialize
GdkImage::bits_per_pixel.
(_gdk_windowing_get_bits_for_depth): Return 32 bits for depth 24.
* gdk/win32/gdkpixmap-win32.c (gdk_pixmap_new): Use
_gdk_windowing_get_bits_for_depth() to initialize
BITMAPINFOHEADER::biBitCount.
* gdk/win32/gdkvisual-win32.c (_gdk_visual_init): Set
GdkVisual::depth to 24 even if GetDeviceCaps(BITSPIXEL) returns
32.
2005-10-12 Stefan Kost <ensonic@users.sf.net>
* demos/gtk-demo/appwindow.c: (about_cb):

6
gdk/win32/gdkimage-win32.c
View File

@ -127,6 +127,7 @@ _gdk_win32_new_image (GdkVisual *visual,
image->width = width;
image->height = height;
image->depth = depth;
image->bits_per_pixel = _gdk_windowing_get_bits_for_depth (gdk_display_get_default (), depth);
switch (depth)
{
case 1:
@ -142,7 +143,7 @@ _gdk_win32_new_image (GdkVisual *visual,
image->bpp = 2;
break;
case 24:
image->bpp = 3;
image->bpp = image->bits_per_pixel / 8;
break;
case 32:
image->bpp = 4;
@ -157,7 +158,6 @@ _gdk_win32_new_image (GdkVisual *visual,
image->bpl = ((width - 1)/8 + 1)*4;
else
image->bpl = ((width*image->bpp - 1)/4 + 1)*4;
image->bits_per_pixel = image->depth;
image->mem = bits;
return image;
@ -423,8 +423,6 @@ _gdk_windowing_get_bits_for_depth (GdkDisplay *display,
return 16;
case 24:
return 24;
case 32:
return 32;
}

2
gdk/win32/gdkpixmap-win32.c
View File

@ -209,7 +209,7 @@ gdk_pixmap_new (GdkDrawable *drawable,
case 1:
case 24:
case 32:
bmi.bmiHeader.biBitCount = depth;
bmi.bmiHeader.biBitCount = _gdk_windowing_get_bits_for_depth (gdk_display_get_default (), depth);
break;
case 4:

1
gdk/win32/gdkvisual-win32.c
View File

@ -246,6 +246,7 @@ _gdk_visual_init (void)
}
else if (bitspixel == 24 || bitspixel == 32)
{
bitspixel = 24;
system_visual->type = GDK_VISUAL_TRUE_COLOR;
system_visual->red_mask = 0x00FF0000;
system_visual->green_mask = 0x0000FF00;