xenocara/xserver/hw/xfree86/modes/xf86Rotate.c
2019-12-12 06:05:17 +00:00

492 lines
16 KiB
C

/*
* Copyright © 2006 Keith Packard
* Copyright © 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>
#endif
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include "mi.h"
#include "xf86.h"
#include "xf86DDC.h"
#include "windowstr.h"
#include "xf86Crtc.h"
#include "xf86Modes.h"
#include "xf86RandR12.h"
#include "X11/extensions/render.h"
#include "X11/extensions/dpmsconst.h"
#include "X11/Xatom.h"
static void
xf86RotateCrtcRedisplay(xf86CrtcPtr crtc, RegionPtr region)
{
ScrnInfoPtr scrn = crtc->scrn;
ScreenPtr screen = scrn->pScreen;
WindowPtr root = screen->root;
PixmapPtr dst_pixmap = crtc->rotatedPixmap;
PictFormatPtr format = PictureWindowFormat(screen->root);
int error;
PicturePtr src, dst;
int n = RegionNumRects(region);
BoxPtr b = RegionRects(region);
XID include_inferiors = IncludeInferiors;
if (crtc->driverIsPerformingTransform & XF86DriverTransformOutput)
return;
src = CreatePicture(None,
&root->drawable,
format,
CPSubwindowMode,
&include_inferiors, serverClient, &error);
if (!src)
return;
dst = CreatePicture(None,
&dst_pixmap->drawable,
format, 0L, NULL, serverClient, &error);
if (!dst)
return;
error = SetPictureTransform(src, &crtc->crtc_to_framebuffer);
if (error)
return;
if (crtc->transform_in_use && crtc->filter)
SetPicturePictFilter(src, crtc->filter, crtc->params, crtc->nparams);
if (crtc->shadowClear) {
CompositePicture(PictOpSrc,
src, NULL, dst,
0, 0, 0, 0, 0, 0,
crtc->mode.HDisplay, crtc->mode.VDisplay);
crtc->shadowClear = FALSE;
}
else {
while (n--) {
BoxRec dst_box;
dst_box = *b;
dst_box.x1 -= crtc->filter_width >> 1;
dst_box.x2 += crtc->filter_width >> 1;
dst_box.y1 -= crtc->filter_height >> 1;
dst_box.y2 += crtc->filter_height >> 1;
pixman_f_transform_bounds(&crtc->f_framebuffer_to_crtc, &dst_box);
CompositePicture(PictOpSrc,
src, NULL, dst,
dst_box.x1, dst_box.y1, 0, 0, dst_box.x1,
dst_box.y1, dst_box.x2 - dst_box.x1,
dst_box.y2 - dst_box.y1);
b++;
}
}
FreePicture(src, None);
FreePicture(dst, None);
}
static void
xf86CrtcDamageShadow(xf86CrtcPtr crtc)
{
ScrnInfoPtr pScrn = crtc->scrn;
BoxRec damage_box;
RegionRec damage_region;
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
damage_box.x1 = 0;
damage_box.x2 = crtc->mode.HDisplay;
damage_box.y1 = 0;
damage_box.y2 = crtc->mode.VDisplay;
if (!pixman_transform_bounds(&crtc->crtc_to_framebuffer, &damage_box)) {
damage_box.x1 = 0;
damage_box.y1 = 0;
damage_box.x2 = pScreen->width;
damage_box.y2 = pScreen->height;
}
if (damage_box.x1 < 0)
damage_box.x1 = 0;
if (damage_box.y1 < 0)
damage_box.y1 = 0;
if (damage_box.x2 > pScreen->width)
damage_box.x2 = pScreen->width;
if (damage_box.y2 > pScreen->height)
damage_box.y2 = pScreen->height;
RegionInit(&damage_region, &damage_box, 1);
DamageDamageRegion(&(*pScreen->GetScreenPixmap) (pScreen)->drawable,
&damage_region);
RegionUninit(&damage_region);
crtc->shadowClear = TRUE;
}
static void
xf86RotatePrepare(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
for (c = 0; c < xf86_config->num_crtc; c++) {
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->rotatedData && !crtc->rotatedPixmap) {
crtc->rotatedPixmap = crtc->funcs->shadow_create(crtc,
crtc->rotatedData,
crtc->mode.
HDisplay,
crtc->mode.
VDisplay);
if (!xf86_config->rotation_damage_registered) {
/* Hook damage to screen pixmap */
DamageRegister(&pScreen->root->drawable,
xf86_config->rotation_damage);
xf86_config->rotation_damage_registered = TRUE;
EnableLimitedSchedulingLatency();
}
xf86CrtcDamageShadow(crtc);
}
}
}
static Bool
xf86RotateRedisplay(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
DamagePtr damage = xf86_config->rotation_damage;
RegionPtr region;
if (!damage)
return FALSE;
xf86RotatePrepare(pScreen);
region = DamageRegion(damage);
if (RegionNotEmpty(region)) {
int c;
SourceValidateProcPtr SourceValidate;
/*
* SourceValidate is used by the software cursor code
* to pull the cursor off of the screen when reading
* bits from the frame buffer. Bypassing this function
* leaves the software cursor in place
*/
SourceValidate = pScreen->SourceValidate;
pScreen->SourceValidate = miSourceValidate;
for (c = 0; c < xf86_config->num_crtc; c++) {
xf86CrtcPtr crtc = xf86_config->crtc[c];
if (crtc->transform_in_use && crtc->enabled) {
RegionRec crtc_damage;
/* compute portion of damage that overlaps crtc */
RegionInit(&crtc_damage, &crtc->bounds, 1);
RegionIntersect(&crtc_damage, &crtc_damage, region);
/* update damaged region */
if (RegionNotEmpty(&crtc_damage))
xf86RotateCrtcRedisplay(crtc, &crtc_damage);
RegionUninit(&crtc_damage);
}
}
pScreen->SourceValidate = SourceValidate;
DamageEmpty(damage);
}
return TRUE;
}
static void
xf86RotateBlockHandler(ScreenPtr pScreen, void *pTimeout)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
/* Unwrap before redisplay in case the software
* cursor layer wants to add its block handler to the
* chain
*/
pScreen->BlockHandler = xf86_config->BlockHandler;
xf86RotateRedisplay(pScreen);
(*pScreen->BlockHandler) (pScreen, pTimeout);
/* Re-wrap if we still need this hook */
if (xf86_config->rotation_damage != NULL) {
xf86_config->BlockHandler = pScreen->BlockHandler;
pScreen->BlockHandler = xf86RotateBlockHandler;
} else
xf86_config->BlockHandler = NULL;
}
void
xf86RotateDestroy(xf86CrtcPtr crtc)
{
ScrnInfoPtr pScrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
/* Free memory from rotation */
if (crtc->rotatedPixmap || crtc->rotatedData) {
crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
crtc->rotatedData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
for (c = 0; c < xf86_config->num_crtc; c++)
if (xf86_config->crtc[c]->rotatedData)
return;
/*
* Clean up damage structures when no crtcs are rotated
*/
if (xf86_config->rotation_damage) {
/* Free damage structure */
if (xf86_config->rotation_damage_registered) {
xf86_config->rotation_damage_registered = FALSE;
DisableLimitedSchedulingLatency();
}
DamageDestroy(xf86_config->rotation_damage);
xf86_config->rotation_damage = NULL;
}
}
void
xf86RotateFreeShadow(ScrnInfoPtr pScrn)
{
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
int c;
for (c = 0; c < config->num_crtc; c++) {
xf86CrtcPtr crtc = config->crtc[c];
if (crtc->rotatedPixmap || crtc->rotatedData) {
crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
crtc->rotatedData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
}
}
void
xf86RotateCloseScreen(ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
int c;
/* This has already been destroyed when the root window was destroyed */
xf86_config->rotation_damage = NULL;
for (c = 0; c < xf86_config->num_crtc; c++)
xf86RotateDestroy(xf86_config->crtc[c]);
}
static Bool
xf86CrtcFitsScreen(xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)
{
ScrnInfoPtr pScrn = crtc->scrn;
BoxRec b;
/* When called before PreInit, the driver is
* presumably doing load detect
*/
if (pScrn->is_gpu) {
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
if (pScreen->current_master)
pScrn = xf86ScreenToScrn(pScreen->current_master);
}
if (pScrn->virtualX == 0 || pScrn->virtualY == 0)
return TRUE;
b.x1 = 0;
b.y1 = 0;
b.x2 = crtc->mode.HDisplay;
b.y2 = crtc->mode.VDisplay;
if (crtc_to_fb)
pixman_f_transform_bounds(crtc_to_fb, &b);
else {
b.x1 += crtc->x;
b.y1 += crtc->y;
b.x2 += crtc->x;
b.y2 += crtc->y;
}
return (0 <= b.x1 && b.x2 <= pScrn->virtualX &&
0 <= b.y1 && b.y2 <= pScrn->virtualY);
}
Bool
xf86CrtcRotate(xf86CrtcPtr crtc)
{
ScrnInfoPtr pScrn = crtc->scrn;
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
PictTransform crtc_to_fb;
struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;
xFixed *new_params = NULL;
int new_nparams = 0;
PictFilterPtr new_filter = NULL;
int new_width = 0;
int new_height = 0;
RRTransformPtr transform = NULL;
Bool damage = FALSE;
if (pScreen->isGPU)
return TRUE;
if (crtc->transformPresent)
transform = &crtc->transform;
if (!RRTransformCompute(crtc->x, crtc->y,
crtc->mode.HDisplay, crtc->mode.VDisplay,
crtc->rotation,
transform,
&crtc_to_fb,
&f_crtc_to_fb,
&f_fb_to_crtc) &&
xf86CrtcFitsScreen(crtc, &f_crtc_to_fb)) {
/*
* If the untranslated transformation is the identity,
* disable the shadow buffer
*/
xf86RotateDestroy(crtc);
crtc->transform_in_use = FALSE;
free(new_params);
new_params = NULL;
new_nparams = 0;
new_filter = NULL;
new_width = 0;
new_height = 0;
}
else {
if (crtc->driverIsPerformingTransform & XF86DriverTransformOutput) {
xf86RotateDestroy(crtc);
}
else {
/*
* these are the size of the shadow pixmap, which
* matches the mode, not the pre-rotated copy in the
* frame buffer
*/
int width = crtc->mode.HDisplay;
int height = crtc->mode.VDisplay;
void *shadowData = crtc->rotatedData;
PixmapPtr shadow = crtc->rotatedPixmap;
int old_width = shadow ? shadow->drawable.width : 0;
int old_height = shadow ? shadow->drawable.height : 0;
/* Allocate memory for rotation */
if (old_width != width || old_height != height) {
if (shadow || shadowData) {
crtc->funcs->shadow_destroy(crtc, shadow, shadowData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
shadowData = crtc->funcs->shadow_allocate(crtc, width, height);
if (!shadowData)
goto bail1;
crtc->rotatedData = shadowData;
/* shadow will be damaged in xf86RotatePrepare */
}
else {
/* mark shadowed area as damaged so it will be repainted */
damage = TRUE;
}
if (!xf86_config->rotation_damage) {
/* Create damage structure */
xf86_config->rotation_damage = DamageCreate(NULL, NULL,
DamageReportNone,
TRUE, pScreen,
pScreen);
if (!xf86_config->rotation_damage)
goto bail2;
/* Wrap block handler */
if (!xf86_config->BlockHandler) {
xf86_config->BlockHandler = pScreen->BlockHandler;
pScreen->BlockHandler = xf86RotateBlockHandler;
}
}
if (0) {
bail2:
if (shadow || shadowData) {
crtc->funcs->shadow_destroy(crtc, shadow, shadowData);
crtc->rotatedPixmap = NULL;
crtc->rotatedData = NULL;
}
bail1:
if (old_width && old_height)
crtc->rotatedPixmap =
crtc->funcs->shadow_create(crtc, NULL, old_width,
old_height);
return FALSE;
}
}
#ifdef RANDR_12_INTERFACE
if (transform) {
if (transform->nparams) {
new_params = malloc(transform->nparams * sizeof(xFixed));
if (new_params) {
memcpy(new_params, transform->params,
transform->nparams * sizeof(xFixed));
new_nparams = transform->nparams;
new_filter = transform->filter;
}
}
else
new_filter = transform->filter;
if (new_filter) {
new_width = new_filter->width;
new_height = new_filter->height;
}
}
#endif
crtc->transform_in_use = TRUE;
}
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;
free(crtc->params);
crtc->params = new_params;
crtc->nparams = new_nparams;
crtc->filter = new_filter;
crtc->filter_width = new_width;
crtc->filter_height = new_height;
crtc->bounds.x1 = 0;
crtc->bounds.x2 = crtc->mode.HDisplay;
crtc->bounds.y1 = 0;
crtc->bounds.y2 = crtc->mode.VDisplay;
pixman_f_transform_bounds(&f_crtc_to_fb, &crtc->bounds);
if (damage)
xf86CrtcDamageShadow(crtc);
/* All done */
return TRUE;
}