xserver-multidpi/hw/xfree86/modes/xf86Cursors.c
Aaron Plattner 245cb8e94f xfree86/modes: Let the driver handle the transform
If a driver can use hardware to handle the crtc transform, then
there's no need for the server's shadow layer to do it.  Add a crtc
flag that lets the driver indicate that it is handling the transform.
If it's set, consider the transformed size of the screen but don't
actually enable the shadow layer.  Also stop adjusting the cursor
image and position.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
2011-10-03 11:30:00 -07:00

704 lines
18 KiB
C

/*
* Copyright © 2007 Keith Packard
* Copyright © 2010-2011 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
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#endif
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include "xf86.h"
#include "xf86DDC.h"
#include "xf86Crtc.h"
#include "xf86Modes.h"
#include "xf86RandR12.h"
#include "xf86CursorPriv.h"
#include "X11/extensions/render.h"
#include "X11/extensions/dpmsconst.h"
#include "X11/Xatom.h"
#include "picturestr.h"
#include "cursorstr.h"
#include "inputstr.h"
/*
* Returns the rotation being performed by the server. If the driver indicates
* that it's handling the screen transform, then this returns RR_Rotate_0.
*/
static Rotation
xf86_crtc_cursor_rotation (xf86CrtcPtr crtc)
{
if (crtc->driverIsPerformingTransform)
return RR_Rotate_0;
return crtc->rotation;
}
/*
* Given a screen coordinate, rotate back to a cursor source coordinate
*/
static void
xf86_crtc_rotate_coord (Rotation rotation,
int width,
int height,
int x_dst,
int y_dst,
int *x_src,
int *y_src)
{
int t;
switch (rotation & 0xf) {
case RR_Rotate_0:
break;
case RR_Rotate_90:
t = x_dst;
x_dst = height - y_dst - 1;
y_dst = t;
break;
case RR_Rotate_180:
x_dst = width - x_dst - 1;
y_dst = height - y_dst - 1;
break;
case RR_Rotate_270:
t = x_dst;
x_dst = y_dst;
y_dst = width - t - 1;
break;
}
if (rotation & RR_Reflect_X)
x_dst = width - x_dst - 1;
if (rotation & RR_Reflect_Y)
y_dst = height - y_dst - 1;
*x_src = x_dst;
*y_src = y_dst;
}
/*
* Given a cursor source coordinate, rotate to a screen coordinate
*/
static void
xf86_crtc_rotate_coord_back (Rotation rotation,
int width,
int height,
int x_dst,
int y_dst,
int *x_src,
int *y_src)
{
int t;
if (rotation & RR_Reflect_X)
x_dst = width - x_dst - 1;
if (rotation & RR_Reflect_Y)
y_dst = height - y_dst - 1;
switch (rotation & 0xf) {
case RR_Rotate_0:
break;
case RR_Rotate_90:
t = x_dst;
x_dst = y_dst;
y_dst = width - t - 1;
break;
case RR_Rotate_180:
x_dst = width - x_dst - 1;
y_dst = height - y_dst - 1;
break;
case RR_Rotate_270:
t = x_dst;
x_dst = height - y_dst - 1;
y_dst = t;
break;
}
*x_src = x_dst;
*y_src = y_dst;
}
struct cursor_bit {
CARD8 *byte;
char bitpos;
};
/*
* Convert an x coordinate to a position within the cursor bitmap
*/
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)
x = (x & ~3) | (3 - (x & 3));
if (((flags & HARDWARE_CURSOR_BIT_ORDER_MSBFIRST) == 0) ==
(X_BYTE_ORDER == X_BIG_ENDIAN))
x = (x & ~7) | (7 - (x & 7));
if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_1)
x = (x << 1) + mask;
else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_8)
x = ((x & ~7) << 1) | (mask << 3) | (x & 7);
else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_16)
x = ((x & ~15) << 1) | (mask << 4) | (x & 15);
else if (flags & HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_32)
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);
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, xf86CursorInfoPtr cursor_info, int x, int y, Bool mask)
{
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, xf86CursorInfoPtr cursor_info, int x, int y, Bool mask)
{
struct cursor_bit bit = cursor_bitpos(image, cursor_info, x, y, mask);
*bit.byte |= 1 << bit.bitpos;
}
/*
* Load a two color cursor into a driver that supports only ARGB cursors
*/
static void
xf86_crtc_convert_cursor_to_argb (xf86CrtcPtr crtc, unsigned char *src)
{
ScrnInfoPtr scrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
CARD32 *cursor_image = (CARD32 *) xf86_config->cursor_image;
int x, y;
int xin, yin;
int flags = cursor_info->Flags;
CARD32 bits;
const Rotation rotation = xf86_crtc_cursor_rotation(crtc);
#ifdef ARGB_CURSOR
crtc->cursor_argb = FALSE;
#endif
for (y = 0; y < cursor_info->MaxHeight; y++)
for (x = 0; x < cursor_info->MaxWidth; x++)
{
xf86_crtc_rotate_coord (rotation,
cursor_info->MaxWidth,
cursor_info->MaxHeight,
x, y, &xin, &yin);
if (get_bit (src, cursor_info, xin, yin, TRUE) ==
((flags & HARDWARE_CURSOR_INVERT_MASK) == 0))
{
if (get_bit (src, cursor_info, xin, yin, FALSE))
bits = xf86_config->cursor_fg;
else
bits = xf86_config->cursor_bg;
}
else
bits = 0;
cursor_image[y * cursor_info->MaxWidth + x] = bits;
}
crtc->funcs->load_cursor_argb (crtc, cursor_image);
}
/*
* Set the colors for a two-color cursor (ignore for ARGB cursors)
*/
static void
xf86_set_cursor_colors (ScrnInfoPtr scrn, int bg, int fg)
{
ScreenPtr screen = scrn->pScreen;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
CursorPtr cursor = xf86_config->cursor;
int c;
CARD8 *bits = cursor ?
dixLookupScreenPrivate(&cursor->devPrivates, CursorScreenKey, screen)
: NULL;
/* Save ARGB versions of these colors */
xf86_config->cursor_fg = (CARD32) fg | 0xff000000;
xf86_config->cursor_bg = (CARD32) bg | 0xff000000;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled && !crtc->cursor_argb)
{
if (crtc->funcs->load_cursor_image)
crtc->funcs->set_cursor_colors (crtc, bg, fg);
else if (bits)
xf86_crtc_convert_cursor_to_argb (crtc, bits);
}
}
}
static void
xf86_crtc_hide_cursor (xf86CrtcPtr crtc)
{
if (crtc->cursor_shown)
{
crtc->funcs->hide_cursor (crtc);
crtc->cursor_shown = FALSE;
}
}
void
xf86_hide_cursors (ScrnInfoPtr scrn)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
xf86_config->cursor_on = FALSE;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled)
xf86_crtc_hide_cursor (crtc);
}
}
static void
xf86_crtc_show_cursor (xf86CrtcPtr crtc)
{
if (!crtc->cursor_shown && crtc->cursor_in_range)
{
crtc->funcs->show_cursor (crtc);
crtc->cursor_shown = TRUE;
}
}
void
xf86_show_cursors (ScrnInfoPtr scrn)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
xf86_config->cursor_on = TRUE;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled)
xf86_crtc_show_cursor (crtc);
}
}
static void
xf86_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y)
{
ScrnInfoPtr scrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
DisplayModePtr mode = &crtc->mode;
Bool in_range;
int dx, dy;
/*
* Transform position of cursor on screen
*/
if (crtc->transform_in_use && !crtc->driverIsPerformingTransform)
{
ScreenPtr screen = scrn->pScreen;
xf86CursorScreenPtr ScreenPriv =
(xf86CursorScreenPtr)dixLookupPrivate(&screen->devPrivates,
xf86CursorScreenKey);
struct pict_f_vector v;
v.v[0] = (x + ScreenPriv->HotX) + 0.5;
v.v[1] = (y + ScreenPriv->HotY) + 0.5;
v.v[2] = 1;
pixman_f_transform_point (&crtc->f_framebuffer_to_crtc, &v);
/* cursor will have 0.5 added to it already so floor is sufficent */
x = floor (v.v[0]);
y = floor (v.v[1]);
/*
* Transform position of cursor upper left corner
*/
xf86_crtc_rotate_coord_back (crtc->rotation,
cursor_info->MaxWidth,
cursor_info->MaxHeight,
ScreenPriv->HotX, ScreenPriv->HotY, &dx, &dy);
x -= dx;
y -= dy;
}
else
{
x -= crtc->x;
y -= crtc->y;
}
/*
* Disable the cursor when it is outside the viewport
*/
in_range = TRUE;
if (x >= mode->HDisplay || y >= mode->VDisplay ||
x <= -cursor_info->MaxWidth || y <= -cursor_info->MaxHeight)
{
in_range = FALSE;
x = 0;
y = 0;
}
crtc->cursor_in_range = in_range;
if (in_range)
{
crtc->funcs->set_cursor_position (crtc, x, y);
xf86_crtc_show_cursor (crtc);
}
else
xf86_crtc_hide_cursor (crtc);
}
static void
xf86_set_cursor_position (ScrnInfoPtr scrn, int x, int y)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
/* undo what xf86HWCurs did to the coordinates */
x += scrn->frameX0;
y += scrn->frameY0;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled)
xf86_crtc_set_cursor_position (crtc, x, y);
}
}
/*
* Load a two-color cursor into a crtc, performing rotation as needed
*/
static void
xf86_crtc_load_cursor_image (xf86CrtcPtr crtc, CARD8 *src)
{
ScrnInfoPtr scrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
CARD8 *cursor_image;
const Rotation rotation = xf86_crtc_cursor_rotation(crtc);
#ifdef ARGB_CURSOR
crtc->cursor_argb = FALSE;
#endif
if (rotation == RR_Rotate_0)
cursor_image = src;
else
{
int x, y;
int xin, yin;
int stride = cursor_info->MaxWidth >> 2;
cursor_image = xf86_config->cursor_image;
memset(cursor_image, 0, cursor_info->MaxHeight * stride);
for (y = 0; y < cursor_info->MaxHeight; y++)
for (x = 0; x < cursor_info->MaxWidth; x++)
{
xf86_crtc_rotate_coord (rotation,
cursor_info->MaxWidth,
cursor_info->MaxHeight,
x, y, &xin, &yin);
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);
}
/*
* Load a cursor image into all active CRTCs
*/
static void
xf86_load_cursor_image (ScrnInfoPtr scrn, unsigned char *src)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled)
{
if (crtc->funcs->load_cursor_image)
xf86_crtc_load_cursor_image (crtc, src);
else if (crtc->funcs->load_cursor_argb)
xf86_crtc_convert_cursor_to_argb (crtc, src);
}
}
}
static Bool
xf86_use_hw_cursor (ScreenPtr screen, CursorPtr cursor)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
++cursor->refcnt;
if (xf86_config->cursor)
FreeCursor (xf86_config->cursor, None);
xf86_config->cursor = cursor;
if (cursor->bits->width > cursor_info->MaxWidth ||
cursor->bits->height> cursor_info->MaxHeight)
return FALSE;
return TRUE;
}
static Bool
xf86_use_hw_cursor_argb (ScreenPtr screen, CursorPtr cursor)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
++cursor->refcnt;
if (xf86_config->cursor)
FreeCursor (xf86_config->cursor, None);
xf86_config->cursor = cursor;
/* Make sure ARGB support is available */
if ((cursor_info->Flags & HARDWARE_CURSOR_ARGB) == 0)
return FALSE;
if (cursor->bits->width > cursor_info->MaxWidth ||
cursor->bits->height> cursor_info->MaxHeight)
return FALSE;
return TRUE;
}
static void
xf86_crtc_load_cursor_argb (xf86CrtcPtr crtc, CursorPtr cursor)
{
ScrnInfoPtr scrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info = xf86_config->cursor_info;
CARD32 *cursor_image = (CARD32 *) xf86_config->cursor_image;
CARD32 *cursor_source = (CARD32 *) cursor->bits->argb;
int x, y;
int xin, yin;
CARD32 bits;
int source_width = cursor->bits->width;
int source_height = cursor->bits->height;
int image_width = cursor_info->MaxWidth;
int image_height = cursor_info->MaxHeight;
const Rotation rotation = xf86_crtc_cursor_rotation(crtc);
for (y = 0; y < image_height; y++)
for (x = 0; x < image_width; x++)
{
xf86_crtc_rotate_coord (rotation, image_width, image_height, x, y,
&xin, &yin);
if (xin < source_width && yin < source_height)
bits = cursor_source[yin * source_width + xin];
else
bits = 0;
cursor_image[y * image_width + x] = bits;
}
crtc->funcs->load_cursor_argb (crtc, cursor_image);
}
static void
xf86_load_cursor_argb (ScrnInfoPtr scrn, CursorPtr cursor)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
for (c = 0; c < xf86_config->num_crtc; c++)
{
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->enabled)
xf86_crtc_load_cursor_argb (crtc, cursor);
}
}
Bool
xf86_cursors_init (ScreenPtr screen, int max_width, int max_height, int flags)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CursorInfoPtr cursor_info;
cursor_info = xf86CreateCursorInfoRec();
if (!cursor_info)
return FALSE;
xf86_config->cursor_image = malloc(max_width * max_height * 4);
if (!xf86_config->cursor_image)
{
xf86DestroyCursorInfoRec (cursor_info);
return FALSE;
}
xf86_config->cursor_info = cursor_info;
cursor_info->MaxWidth = max_width;
cursor_info->MaxHeight = max_height;
cursor_info->Flags = flags;
cursor_info->SetCursorColors = xf86_set_cursor_colors;
cursor_info->SetCursorPosition = xf86_set_cursor_position;
cursor_info->LoadCursorImage = xf86_load_cursor_image;
cursor_info->HideCursor = xf86_hide_cursors;
cursor_info->ShowCursor = xf86_show_cursors;
cursor_info->UseHWCursor = xf86_use_hw_cursor;
#ifdef ARGB_CURSOR
if (flags & HARDWARE_CURSOR_ARGB)
{
cursor_info->UseHWCursorARGB = xf86_use_hw_cursor_argb;
cursor_info->LoadCursorARGB = xf86_load_cursor_argb;
}
#endif
xf86_config->cursor = NULL;
xf86_hide_cursors (scrn);
return xf86InitCursor (screen, cursor_info);
}
/**
* Called when anything on the screen is reconfigured.
*
* Reloads cursor images as needed, then adjusts cursor positions
*/
void
xf86_reload_cursors (ScreenPtr screen)
{
ScrnInfoPtr scrn;
xf86CrtcConfigPtr xf86_config;
xf86CursorInfoPtr cursor_info;
CursorPtr cursor;
int x, y;
xf86CursorScreenPtr cursor_screen_priv;
/* initial mode setting will not have set a screen yet.
May be called before the devices are initialised.
*/
if (!screen || !inputInfo.pointer)
return;
cursor_screen_priv = dixLookupPrivate(&screen->devPrivates,
xf86CursorScreenKey);
/* return if HW cursor is inactive, to avoid displaying two cursors */
if (!cursor_screen_priv || !cursor_screen_priv->isUp)
return;
scrn = xf86Screens[screen->myNum];
xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
/* make sure the cursor code has been initialized */
cursor_info = xf86_config->cursor_info;
if (!cursor_info)
return;
cursor = xf86_config->cursor;
GetSpritePosition (inputInfo.pointer, &x, &y);
if (!(cursor_info->Flags & HARDWARE_CURSOR_UPDATE_UNHIDDEN))
(*cursor_info->HideCursor)(scrn);
if (cursor)
{
void *src = dixLookupScreenPrivate(&cursor->devPrivates, CursorScreenKey, screen);
#ifdef ARGB_CURSOR
if (cursor->bits->argb && cursor_info->LoadCursorARGB)
(*cursor_info->LoadCursorARGB) (scrn, cursor);
else if (src)
#endif
(*cursor_info->LoadCursorImage)(scrn, src);
x += scrn->frameX0 + cursor_screen_priv->HotX;
y += scrn->frameY0 + cursor_screen_priv->HotY;
(*cursor_info->SetCursorPosition)(scrn, x, y);
}
}
/**
* Clean up CRTC-based cursor code
*/
void
xf86_cursors_fini (ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
if (xf86_config->cursor_info)
{
xf86DestroyCursorInfoRec (xf86_config->cursor_info);
xf86_config->cursor_info = NULL;
}
free(xf86_config->cursor_image);
xf86_config->cursor_image = NULL;
if (xf86_config->cursor)
{
FreeCursor (xf86_config->cursor, None);
xf86_config->cursor = NULL;
}
}