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randr: Add sprite position transforms

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This implements sprite position transformations. Sprite image
transforms are passed all the way to the DDX layer, but the images are
not yet manipulated before being passed to the drivers.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
This commit is contained in:
Keith Packard 2010-12-03 22:08:06 -08:00
parent c8bc25fd76
commit 66294afcab
11 changed files with 333 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
hw/xfree86/modes/xf86Crtc.c
View File

@ -106,12 +106,17 @@ xf86CrtcCreate (ScrnInfoPtr scrn,
pixman_transform_init_identity (&crtc->crtc_to_framebuffer);
pixman_f_transform_init_identity (&crtc->f_crtc_to_framebuffer);
pixman_f_transform_init_identity (&crtc->f_framebuffer_to_crtc);
pixman_f_transform_init_identity (&crtc->f_screen_to_crtc);
pixman_f_transform_init_identity (&crtc->user_sprite_position_transform);
pixman_f_transform_init_identity (&crtc->f_crtc_to_cursor);
pixman_f_transform_init_identity (&crtc->user_sprite_image_transform);
crtc->filter = NULL;
crtc->params = NULL;
crtc->nparams = 0;
crtc->filter_width = 0;
crtc->filter_height = 0;
crtc->transform_in_use = FALSE;
crtc->sprite_transform_in_use = FALSE;
crtc->transformPresent = FALSE;
crtc->desiredTransformPresent = FALSE;
memset (&crtc->bounds, '\0', sizeof (crtc->bounds));

25
hw/xfree86/modes/xf86Crtc.h
View File

@ -345,6 +345,7 @@ struct _xf86Crtc {
int filter_width; /* ABI 2 */
int filter_height; /* ABI 2 */
Bool transform_in_use;
Bool sprite_transform_in_use;
RRTransformRec transform; /* ABI 2 */
Bool transformPresent; /* ABI 2 */
RRTransformRec desiredTransform; /* ABI 2 */
@ -384,6 +385,22 @@ struct _xf86Crtc {
* Clear the shadow
*/
Bool shadowClear;
/**
* Sprite position transforms
*/
/* Transform a screen coordinate to a crtc coordinate */
struct pixman_f_transform f_screen_to_crtc;
/* The user-specified portion of the screen to crtc conversion */
struct pixman_f_transform user_sprite_position_transform;
/* Transform a hardware cursor coordinate to a cursor coordinate */
struct pixman_f_transform f_crtc_to_cursor;
/* The user-specified portion of the cursor to hardware transform */
struct pixman_f_transform user_sprite_image_transform;
};
typedef struct _xf86OutputFuncs {
@ -777,6 +794,14 @@ xf86CrtcSetOrigin (xf86CrtcPtr crtc, int x, int y);
extern _X_EXPORT Bool
xf86CrtcRotate (xf86CrtcPtr crtc);
/*
* Update cursor transform matrices after user changes
* This is just the cursor subset of xf86CrtcRotate
*/
extern _X_EXPORT void
xf86CrtcRotateCursor (xf86CrtcPtr crtc);
/*
* Clean up any rotation data, used when a crtc is turned off
* as well as when rotation is disabled.

4
hw/xfree86/modes/xf86Cursors.c
View File

@ -338,7 +338,7 @@ xf86_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y)
/*
* Transform position of cursor on screen
*/
if (crtc->transform_in_use)
if (crtc->sprite_transform_in_use)
{
ScreenPtr screen = scrn->pScreen;
xf86CursorScreenPtr ScreenPriv =
@ -349,7 +349,7 @@ xf86_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y)
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);
pixman_f_transform_point (&crtc->f_screen_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]);

31
hw/xfree86/modes/xf86RandR12.c
View File

@ -180,14 +180,14 @@ xf86RandR13VerifyPanningArea (xf86CrtcPtr crtc, int screenWidth, int screenHeigh
*/
static void
xf86ComputeCrtcPan (Bool transform_in_use,
xf86ComputeCrtcPan (Bool sprite_transform_in_use,
struct pixman_f_transform *m,
double screen_x, double screen_y,
double crtc_x, double crtc_y,
int old_pan_x, int old_pan_y,
int *new_pan_x, int *new_pan_y)
{
if (transform_in_use) {
if (sprite_transform_in_use) {
/*
* Given the current transform, M, the current position
* on the Screen, S, and the desired position on the CRTC,
@ -374,8 +374,8 @@ xf86RandR13Pan (xf86CrtcPtr crtc, int x, int y)
c.v[0] = x;
c.v[1] = y;
c.v[2] = 1.0;
if (crtc->transform_in_use) {
pixman_f_transform_point(&crtc->f_framebuffer_to_crtc, &c);
if (crtc->sprite_transform_in_use) {
pixman_f_transform_point(&crtc->f_screen_to_crtc, &c);
} else {
c.v[0] -= crtc->x;
c.v[1] -= crtc->y;
@ -402,8 +402,8 @@ xf86RandR13Pan (xf86CrtcPtr crtc, int x, int y)
}
}
if (panned)
xf86ComputeCrtcPan (crtc->transform_in_use,
&crtc->f_framebuffer_to_crtc,
xf86ComputeCrtcPan (crtc->sprite_transform_in_use,
&crtc->f_screen_to_crtc,
x, y, c.v[0], c.v[1],
newX, newY, &newX, &newY);
}
@ -414,7 +414,7 @@ xf86RandR13Pan (xf86CrtcPtr crtc, int x, int y)
* XXX This computation only works when we do not have a transform
* in use.
*/
if (!crtc->transform_in_use)
if (!crtc->sprite_transform_in_use)
{
/* Validate against [xy]1 after [xy]2, to be sure that results are > 0 for [xy]1 > 0 */
if (crtc->panningTotalArea.x2 > crtc->panningTotalArea.x1) {
@ -1732,6 +1732,20 @@ xf86RandR12ChangeGamma(int scrnIndex, Gamma gamma)
return Success;
}
static void
xf86RandR14SetCrtcSpriteTransform(ScreenPtr pScreen,
RRCrtcPtr randr_crtc,
struct pixman_f_transform *f_position_transform,
struct pixman_f_transform *f_image_transform)
{
xf86CrtcPtr crtc = randr_crtc->devPrivate;
crtc->user_sprite_position_transform = *f_position_transform;
crtc->user_sprite_image_transform = *f_image_transform;
xf86CrtcRotateCursor(crtc);
xf86_reload_cursors(pScreen);
}
static Bool
xf86RandR12EnterVT (int screen_index, int flags)
{
@ -1740,6 +1754,7 @@ xf86RandR12EnterVT (int screen_index, int flags)
XF86RandRInfoPtr randrp = XF86RANDRINFO(pScreen);
rrScrPrivPtr rp = rrGetScrPriv(pScreen);
Bool ret;
int i;
if (randrp->orig_EnterVT) {
pScrn->EnterVT = randrp->orig_EnterVT;
@ -1751,7 +1766,6 @@ xf86RandR12EnterVT (int screen_index, int flags)
}
/* reload gamma */
int i;
for (i = 0; i < rp->numCrtcs; i++)
xf86RandR12CrtcSetGamma(pScreen, rp->crtcs[i]);
@ -1782,6 +1796,7 @@ xf86RandR12Init12 (ScreenPtr pScreen)
rp->rrSetConfig = NULL;
pScrn->PointerMoved = xf86RandR12PointerMoved;
pScrn->ChangeGamma = xf86RandR12ChangeGamma;
rp->rrSetCrtcSpriteTransform = xf86RandR14SetCrtcSpriteTransform;
randrp->orig_EnterVT = pScrn->EnterVT;
pScrn->EnterVT = xf86RandR12EnterVT;

44
hw/xfree86/modes/xf86Rotate.c
View File

@ -369,6 +369,39 @@ xf86CrtcFitsScreen (xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)
0 <= b.y1 && b.y2 <= pScrn->virtualY);
}
/*
* A subset of xf86CrtcRotate that just deals with
* cursor image/position transforms. Used when changing
* the cursor transform
*/
void
xf86CrtcRotateCursor (xf86CrtcPtr crtc)
{
/* if this is called during ScreenInit() we don't have pScrn->pScreen yet */
RRTransformPtr transform = NULL;
PictTransform crtc_to_fb;
struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc, f_screen_to_crtc, f_crtc_to_cursor;
if (crtc->transformPresent)
transform = &crtc->transform;
(void) RRTransformCompute (crtc->x, crtc->y,
crtc->mode.HDisplay, crtc->mode.VDisplay,
crtc->rotation,
transform,
&crtc->user_sprite_position_transform,
&crtc->user_sprite_image_transform,
&crtc_to_fb,
&f_crtc_to_fb,
&f_fb_to_crtc,
&f_screen_to_crtc,
&f_crtc_to_cursor,
&crtc->sprite_transform_in_use);
crtc->f_screen_to_crtc = f_screen_to_crtc;
crtc->f_crtc_to_cursor = f_crtc_to_cursor;
}
Bool
xf86CrtcRotate (xf86CrtcPtr crtc)
{
@ -377,7 +410,7 @@ xf86CrtcRotate (xf86CrtcPtr crtc)
/* if this is called during ScreenInit() we don't have pScrn->pScreen yet */
ScreenPtr pScreen = screenInfo.screens[pScrn->scrnIndex];
PictTransform crtc_to_fb;
struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;
struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc, f_screen_to_crtc, f_crtc_to_cursor;
xFixed *new_params = NULL;
int new_nparams = 0;
PictFilterPtr new_filter = NULL;
@ -393,10 +426,15 @@ xf86CrtcRotate (xf86CrtcPtr crtc)
crtc->mode.HDisplay, crtc->mode.VDisplay,
crtc->rotation,
transform,
&crtc->user_sprite_position_transform,
&crtc->user_sprite_image_transform,
&crtc_to_fb,
&f_crtc_to_fb,
&f_fb_to_crtc) &&
&f_fb_to_crtc,
&f_screen_to_crtc,
&f_crtc_to_cursor,
&crtc->sprite_transform_in_use) &&
xf86CrtcFitsScreen (crtc, &f_crtc_to_fb))
{
/*
@ -505,6 +543,8 @@ xf86CrtcRotate (xf86CrtcPtr crtc)
crtc->crtc_to_framebuffer = crtc_to_fb;
crtc->f_crtc_to_framebuffer = f_crtc_to_fb;
crtc->f_framebuffer_to_crtc = f_fb_to_crtc;
crtc->f_screen_to_crtc = f_screen_to_crtc;
crtc->f_crtc_to_cursor = f_crtc_to_cursor;
free(crtc->params);
crtc->params = new_params;
crtc->nparams = new_nparams;

1
randr/Makefile.am
View File

@ -20,6 +20,7 @@ librandr_la_SOURCES = \
rrproperty.c \
rrscreen.c \
rrsdispatch.c \
rrsprite.c \
rrtransform.h \
rrtransform.c

63
randr/randrstr.h
View File

@ -55,9 +55,10 @@
#define RANDR_10_INTERFACE 1
#define RANDR_12_INTERFACE 1
#define RANDR_13_INTERFACE 1 /* requires RANDR_12_INTERFACE */
#define RANDR_14_INTERFACE 1 /* requires RANDR_13_INTERFACE */
#define RANDR_GET_CRTC_INTERFACE 1
#define RANDR_INTERFACE_VERSION 0x0103
#define RANDR_INTERFACE_VERSION 0x0104
typedef XID RRMode;
typedef XID RROutput;
@ -122,9 +123,16 @@ struct _rrCrtc {
Bool transforms;
RRTransformRec client_pending_transform;
RRTransformRec client_current_transform;
PictTransform client_sprite_position_transform;
PictTransform client_sprite_image_transform;
struct pict_f_transform client_sprite_f_position_transform;
struct pict_f_transform client_sprite_f_image_transform;
PictTransform transform;
struct pict_f_transform f_transform;
struct pict_f_transform f_inverse;
struct pict_f_transform f_sprite_position; /* crtc from screen */
struct pict_f_transform f_sprite_image_inverse; /* image from crtc */
};
struct _rrOutput {
@ -233,6 +241,16 @@ typedef Bool (*RRSetConfigProcPtr) (ScreenPtr pScreen,
#endif
typedef void (*RRSetCrtcSpriteTransformPtr) (ScreenPtr pScreen,
RRCrtcPtr randr_crtc,
struct pict_f_transform *position_transform,
struct pict_f_transform *image_transform);
typedef void (*RRGetCrtcSpriteTransformPtr) (ScreenPtr pScreen,
RRCrtcPtr randr_crtc,
struct pict_f_transform *position_transform,
struct pict_f_transform *image_transform);
typedef struct _rrScrPriv {
/*
* 'public' part of the structure; DDXen fill this in
@ -256,7 +274,9 @@ typedef struct _rrScrPriv {
RRGetPanningProcPtr rrGetPanning;
RRSetPanningProcPtr rrSetPanning;
#endif
RRSetCrtcSpriteTransformPtr rrSetCrtcSpriteTransform;
RRGetCrtcSpriteTransformPtr rrGetCrtcSpriteTransform;
/*
* Private part of the structure; not considered part of the ABI
*/
@ -605,25 +625,6 @@ RRCrtcGammaSetSize (RRCrtcPtr crtc,
extern _X_EXPORT void
RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height);
/*
* Compute the complete transformation matrix including
* client-specified transform, rotation/reflection values and the crtc
* offset.
*
* Return TRUE if the resulting transform is not a simple translation.
*/
extern _X_EXPORT Bool
RRTransformCompute (int x,
int y,
int width,
int height,
Rotation rotation,
RRTransformPtr rr_transform,
PictTransformPtr transform,
struct pict_f_transform *f_transform,
struct pict_f_transform *f_inverse);
/*
* Return crtc transform
*/
@ -700,6 +701,19 @@ ProcRRGetPanning (ClientPtr client);
int
ProcRRSetPanning (ClientPtr client);
void
RRCrtcSpriteTransformSet(RRCrtcPtr crtc,
PictTransform *position_transform,
PictTransform *image_transform,
struct pict_f_transform *f_position_transform,
struct pict_f_transform *f_image_transform);
int
ProcRRSetCrtcSpriteTransform (ClientPtr client);
int
ProcRRGetCrtcSpriteTransform (ClientPtr client);
/* rrdispatch.c */
extern _X_EXPORT Bool
RRClientKnowsRates (ClientPtr pClient);
@ -889,6 +903,13 @@ ProcRRConfigureOutputProperty (ClientPtr client);
extern _X_EXPORT int
ProcRRDeleteOutputProperty (ClientPtr client);
/* rrsprite.c */
extern _X_EXPORT int
ProcRRSetCrtcSpriteTransform (ClientPtr client);
extern _X_EXPORT int
ProcRRGetCrtcSpriteTransform (ClientPtr client);
/* rrxinerama.c */
#ifdef XINERAMA
extern _X_EXPORT void

23
randr/rrcrtc.c
View File

@ -93,6 +93,8 @@ RRCrtcCreate (ScreenPtr pScreen, void *devPrivate)
pixman_transform_init_identity (&crtc->transform);
pixman_f_transform_init_identity (&crtc->f_transform);
pixman_f_transform_init_identity (&crtc->f_inverse);
pixman_f_transform_init_identity (&crtc->f_sprite_position);
pixman_f_transform_init_identity (&crtc->f_sprite_image_inverse);
if (!AddResource (crtc->id, RRCrtcType, (pointer) crtc))
return NULL;
@ -231,15 +233,21 @@ RRCrtcNotify (RRCrtcPtr crtc,
RRTransformCopy (&crtc->client_current_transform, transform);
RRCrtcChanged (crtc, TRUE);
}
if (crtc->changed && mode)
{
RRTransformCompute (x, y,
mode->mode.width, mode->mode.height,
rotation,
&crtc->client_current_transform,
&crtc->client_sprite_f_position_transform,
&crtc->client_sprite_f_image_transform,
&crtc->transform, &crtc->f_transform,
&crtc->f_inverse);
&crtc->f_inverse, &crtc->f_sprite_position,
&crtc->f_sprite_image_inverse,
NULL);
}
return TRUE;
}
@ -511,7 +519,7 @@ RRCrtcGammaNotify (RRCrtcPtr crtc)
}
static void
RRModeGetScanoutSize (RRModePtr mode, PictTransformPtr transform,
RRModeGetScanoutSize (RRModePtr mode, struct pixman_f_transform *transform,
int *width, int *height)
{
BoxRec box;
@ -527,7 +535,7 @@ RRModeGetScanoutSize (RRModePtr mode, PictTransformPtr transform,
box.x2 = mode->mode.width;
box.y2 = mode->mode.height;
pixman_transform_bounds (transform, &box);
pixman_f_transform_bounds (transform, &box);
*width = box.x2 - box.x1;
*height = box.y2 - box.y1;
}
@ -538,7 +546,7 @@ RRModeGetScanoutSize (RRModePtr mode, PictTransformPtr transform,
void
RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height)
{
return RRModeGetScanoutSize (crtc->mode, &crtc->transform, width, height);
RRModeGetScanoutSize (crtc->mode, &crtc->f_transform, width, height);
}
/*
@ -924,9 +932,12 @@ ProcRRSetCrtcConfig (ClientPtr client)
mode->mode.width, mode->mode.height,
rotation,
&crtc->client_pending_transform,
&transform, &f_transform, &f_inverse);
&crtc->client_sprite_f_position_transform,
&crtc->client_sprite_f_image_transform,
&transform, &f_transform, &f_inverse, NULL, NULL, NULL);
RRModeGetScanoutSize (mode, &transform, &source_width, &source_height);
RRModeGetScanoutSize (mode, &f_transform,
&source_width, &source_height);
if (stuff->x + source_width > pScreen->width)
{
client->errorValue = stuff->x;

104
randr/rrsprite.c Normal file
View File

@ -0,0 +1,104 @@
/*
* Copyright © 2010 Keith Packard
*
* 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.
*/
#include "randrstr.h"
#include "swaprep.h"
void
RRCrtcSpriteTransformSet(RRCrtcPtr crtc,
PictTransform *position_transform,
PictTransform *image_transform,
struct pict_f_transform *f_position_transform,
struct pict_f_transform *f_image_transform)
{
ScreenPtr pScreen;
rrScrPrivPtr pScrPriv;
pScreen = crtc->pScreen;
pScrPriv = rrGetScrPriv(pScreen);
crtc->client_sprite_position_transform = *position_transform;
crtc->client_sprite_image_transform = *image_transform;
crtc->client_sprite_f_position_transform = *f_position_transform;
crtc->client_sprite_f_image_transform = *f_image_transform;
if (pScrPriv->rrSetCrtcSpriteTransform)
(*pScrPriv->rrSetCrtcSpriteTransform) (pScreen, crtc,
&crtc->client_sprite_f_position_transform,
&crtc->client_sprite_f_image_transform);
}
int
ProcRRSetCrtcSpriteTransform (ClientPtr client)
{
REQUEST(xRRSetCrtcSpriteTransformReq);
RRCrtcPtr crtc;
PictTransform position_transform, image_transform;
struct pixman_f_transform f_position_transform, f_image_transform;
REQUEST_AT_LEAST_SIZE(xRRSetCrtcSpriteTransformReq);
VERIFY_RR_CRTC(stuff->crtc, crtc, DixReadAccess);
PictTransform_from_xRenderTransform (&position_transform, &stuff->positionTransform);
PictTransform_from_xRenderTransform (&image_transform, &stuff->imageTransform);
pixman_f_transform_from_pixman_transform (&f_position_transform, &position_transform);
pixman_f_transform_from_pixman_transform (&f_image_transform, &image_transform);
RRCrtcSpriteTransformSet (crtc, &position_transform, &image_transform,
&f_position_transform, &f_image_transform);
return Success;
}
#define CrtcSpriteTransformExtra (SIZEOF(xRRGetCrtcSpriteTransformReply) - 32)
int
ProcRRGetCrtcSpriteTransform (ClientPtr client)
{
REQUEST(xRRGetCrtcSpriteTransformReq);
xRRGetCrtcSpriteTransformReply *reply;
RRCrtcPtr crtc;
int n;
char *extra;
REQUEST_SIZE_MATCH (xRRGetCrtcSpriteTransformReq);
VERIFY_RR_CRTC(stuff->crtc, crtc, DixReadAccess);
reply = malloc(sizeof (xRRGetCrtcSpriteTransformReply));
if (!reply)
return BadAlloc;
extra = (char *) (reply + 1);
reply->type = X_Reply;
reply->sequenceNumber = client->sequence;
reply->length = bytes_to_int32(CrtcSpriteTransformExtra);
xRenderTransform_from_PictTransform(&reply->positionTransform, &crtc->client_sprite_position_transform);
xRenderTransform_from_PictTransform(&reply->imageTransform, &crtc->client_sprite_image_transform);
if (client->swapped) {
swaps (&reply->sequenceNumber, n);
swapl (&reply->length, n);
SwapLongs((CARD32 *) &reply->positionTransform, bytes_to_int32(sizeof(xRenderTransform)));
SwapLongs((CARD32 *) &reply->imageTransform, bytes_to_int32(sizeof(xRenderTransform)));
}
WriteToClient (client, sizeof (xRRGetCrtcSpriteTransformReply), (char *) reply);
free(reply);
return Success;
}

64
randr/rrtransform.c
View File

@ -134,6 +134,24 @@ RRTransformRescale(struct pixman_f_transform *f_transform, double limit)
f_transform->m[j][i] *= scale;
}
#define EPSILON (1e-20)
#define IS_F_SAME(a,b) (fabs((a)-(b)) < EPSILON)
#define IS_F_ZERO(a) (fabs(a) < EPSILON)
static Bool
pict_f_transform_is_identity (const struct pixman_f_transform *t)
{
return (IS_F_SAME (t->m[0][0], t->m[1][1]) &&
IS_F_SAME (t->m[0][0], t->m[2][2]) &&
!IS_F_ZERO (t->m[0][0]) &&
IS_F_ZERO (t->m[0][1]) &&
IS_F_ZERO (t->m[0][2]) &&
IS_F_ZERO (t->m[1][0]) &&
IS_F_ZERO (t->m[1][2]) &&
IS_F_ZERO (t->m[2][0]) &&
IS_F_ZERO (t->m[2][1]));
}
/*
* Compute the complete transformation matrix including
* client-specified transform, rotation/reflection values and the crtc
@ -148,23 +166,39 @@ RRTransformCompute (int x,
int height,
Rotation rotation,
RRTransformPtr rr_transform,
struct pixman_f_transform *sprite_position_transform,
struct pixman_f_transform *sprite_image_transform,
PictTransformPtr transform,
struct pixman_f_transform *f_transform,
struct pixman_f_transform *f_inverse)
struct pixman_f_transform *f_inverse,
struct pixman_f_transform *f_fb_to_sprite,
struct pixman_f_transform *f_sprite_to_image,
Bool *sprite_transform_in_use)
{
PictTransform t_transform, inverse;
struct pixman_f_transform tf_transform, tf_inverse;
struct pixman_f_transform sf_position_transform, sf_image_transform;
struct pixman_f_transform f_image_to_sprite;
Bool overflow = FALSE;
Bool ret = TRUE;
if (!transform) transform = &t_transform;
if (!f_transform) f_transform = &tf_transform;
if (!f_inverse) f_inverse = &tf_inverse;
if (!f_fb_to_sprite) f_fb_to_sprite = &sf_position_transform;
if (!f_sprite_to_image) f_sprite_to_image = &sf_image_transform;
/* invert the sprite image transform to have it go from dest to source */
if (!pixman_f_transform_invert (&f_image_to_sprite, f_sprite_to_image))
pixman_f_transform_init_identity(&f_image_to_sprite);
pixman_transform_init_identity (transform);
pixman_transform_init_identity (&inverse);
pixman_f_transform_init_identity (f_transform);
pixman_f_transform_init_identity (f_inverse);
pixman_f_transform_init_identity (f_fb_to_sprite);
pixman_f_transform_init_identity (f_sprite_to_image);
if (rotation != RR_Rotate_0)
{
double f_rot_cos, f_rot_sin, f_rot_dx, f_rot_dy;
@ -246,7 +280,14 @@ RRTransformCompute (int x,
pixman_f_transform_translate (f_transform, f_inverse, f_scale_dx, f_scale_dy);
}
#ifdef RANDR_12_INTERFACE
/*
* Sprite position is affected by the transform matrix,
* but the image is not
*/
pixman_f_transform_multiply(f_sprite_to_image,
f_transform,
&f_image_to_sprite);
if (rr_transform)
{
if (!pixman_transform_multiply (transform, &rr_transform->transform, transform))
@ -254,7 +295,7 @@ RRTransformCompute (int x,
pixman_f_transform_multiply (f_transform, &rr_transform->f_transform, f_transform);
pixman_f_transform_multiply (f_inverse, f_inverse, &rr_transform->f_inverse);
}
#endif
/*
* Compute the class of the resulting transform
*/
@ -264,7 +305,7 @@ RRTransformCompute (int x,
pixman_f_transform_init_translate (f_transform, x, y);
pixman_f_transform_init_translate (f_inverse, -x, -y);
return FALSE;
ret = FALSE;
}
else
{
@ -278,6 +319,19 @@ RRTransformCompute (int x,
RRTransformRescale(&f_scaled, 16384.0);
pixman_transform_from_pixman_f_transform(transform, &f_scaled);
}
return TRUE;
ret = TRUE;
}
/*
* Sprite position is affected by the transform matrix,
* but the image is not
*/
pixman_f_transform_multiply(f_fb_to_sprite,
f_inverse,
sprite_position_transform);
if (sprite_transform_in_use)
*sprite_transform_in_use = ret || !pict_f_transform_is_identity(f_fb_to_sprite);
return ret;
}

15
randr/rrtransform.h
View File

@ -59,6 +59,13 @@ RRTransformSetFilter (RRTransformPtr dst,
extern _X_EXPORT Bool
RRTransformCopy (RRTransformPtr dst, RRTransformPtr src);
/*
* Compute the complete transformation matrix including
* client-specified transform, rotation/reflection values and the crtc
* offset.
*
* Return TRUE if the resulting transform is not a simple translation.
*/
extern _X_EXPORT Bool
RRTransformCompute (int x,
int y,
@ -66,10 +73,14 @@ RRTransformCompute (int x,
int height,
Rotation rotation,
RRTransformPtr rr_transform,
struct pict_f_transform *sprite_position_transform,
struct pict_f_transform *sprite_image_transform,
PictTransformPtr transform,
struct pict_f_transform *f_transform,
struct pict_f_transform *f_inverse);
struct pict_f_transform *f_inverse,
struct pict_f_transform *f_fb_to_sprite,
struct pict_f_transform *f_sprite_to_image,
Bool *sprite_transform_in_use);
#endif /* _RRTRANSFORM_H_ */