499 lines
16 KiB
C
499 lines
16 KiB
C
/*
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* Copyright © 2006 Keith Packard
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* Copyright © 2011 Aaron Plattner
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#else
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#endif
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include "xf86.h"
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#include "xf86DDC.h"
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#include "fb.h"
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#include "windowstr.h"
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#include "xf86Crtc.h"
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#include "xf86Modes.h"
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#include "xf86RandR12.h"
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#include "X11/extensions/render.h"
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#include "X11/extensions/dpmsconst.h"
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#include "X11/Xatom.h"
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/* borrowed from composite extension, move to Render and publish? */
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#define F(x) IntToxFixed(x)
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#define toF(x) ((float) (x) / 65536.0f)
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static void
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xf86RotateCrtcRedisplay(xf86CrtcPtr crtc, RegionPtr region)
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{
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ScrnInfoPtr scrn = crtc->scrn;
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ScreenPtr screen = scrn->pScreen;
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WindowPtr root = screen->root;
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PixmapPtr dst_pixmap = crtc->rotatedPixmap;
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PictFormatPtr format = PictureWindowFormat(screen->root);
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int error;
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PicturePtr src, dst;
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int n = RegionNumRects(region);
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BoxPtr b = RegionRects(region);
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XID include_inferiors = IncludeInferiors;
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if (crtc->driverIsPerformingTransform)
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return;
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src = CreatePicture(None,
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&root->drawable,
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format,
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CPSubwindowMode,
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&include_inferiors, serverClient, &error);
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if (!src)
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return;
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dst = CreatePicture(None,
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&dst_pixmap->drawable,
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format, 0L, NULL, serverClient, &error);
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if (!dst)
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return;
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error = SetPictureTransform(src, &crtc->crtc_to_framebuffer);
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if (error)
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return;
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if (crtc->transform_in_use && crtc->filter)
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SetPicturePictFilter(src, crtc->filter, crtc->params, crtc->nparams);
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if (crtc->shadowClear) {
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CompositePicture(PictOpSrc,
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src, NULL, dst,
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0, 0, 0, 0, 0, 0,
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crtc->mode.HDisplay, crtc->mode.VDisplay);
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crtc->shadowClear = FALSE;
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}
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else {
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while (n--) {
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BoxRec dst_box;
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dst_box = *b;
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dst_box.x1 -= crtc->filter_width >> 1;
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dst_box.x2 += crtc->filter_width >> 1;
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dst_box.y1 -= crtc->filter_height >> 1;
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dst_box.y2 += crtc->filter_height >> 1;
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pixman_f_transform_bounds(&crtc->f_framebuffer_to_crtc, &dst_box);
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CompositePicture(PictOpSrc,
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src, NULL, dst,
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dst_box.x1, dst_box.y1, 0, 0, dst_box.x1,
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dst_box.y1, dst_box.x2 - dst_box.x1,
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dst_box.y2 - dst_box.y1);
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b++;
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}
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}
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FreePicture(src, None);
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FreePicture(dst, None);
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}
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static void
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xf86CrtcDamageShadow(xf86CrtcPtr crtc)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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BoxRec damage_box;
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RegionRec damage_region;
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ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
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damage_box.x1 = 0;
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damage_box.x2 = crtc->mode.HDisplay;
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damage_box.y1 = 0;
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damage_box.y2 = crtc->mode.VDisplay;
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if (!pixman_transform_bounds(&crtc->crtc_to_framebuffer, &damage_box)) {
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damage_box.x1 = 0;
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damage_box.y1 = 0;
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damage_box.x2 = pScreen->width;
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damage_box.y2 = pScreen->height;
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}
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if (damage_box.x1 < 0)
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damage_box.x1 = 0;
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if (damage_box.y1 < 0)
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damage_box.y1 = 0;
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if (damage_box.x2 > pScreen->width)
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damage_box.x2 = pScreen->width;
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if (damage_box.y2 > pScreen->height)
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damage_box.y2 = pScreen->height;
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RegionInit(&damage_region, &damage_box, 1);
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DamageDamageRegion(&(*pScreen->GetScreenPixmap) (pScreen)->drawable,
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&damage_region);
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RegionUninit(&damage_region);
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crtc->shadowClear = TRUE;
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}
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static void
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xf86RotatePrepare(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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for (c = 0; c < xf86_config->num_crtc; c++) {
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xf86CrtcPtr crtc = xf86_config->crtc[c];
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if (crtc->rotatedData && !crtc->rotatedPixmap) {
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crtc->rotatedPixmap = crtc->funcs->shadow_create(crtc,
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crtc->rotatedData,
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crtc->mode.
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HDisplay,
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crtc->mode.
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VDisplay);
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if (!xf86_config->rotation_damage_registered) {
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/* Hook damage to screen pixmap */
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DamageRegister(&pScreen->root->drawable,
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xf86_config->rotation_damage);
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xf86_config->rotation_damage_registered = TRUE;
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EnableLimitedSchedulingLatency();
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}
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xf86CrtcDamageShadow(crtc);
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}
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}
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}
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static Bool
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xf86RotateRedisplay(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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DamagePtr damage = xf86_config->rotation_damage;
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RegionPtr region;
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if (!damage)
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return FALSE;
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xf86RotatePrepare(pScreen);
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region = DamageRegion(damage);
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if (RegionNotEmpty(region)) {
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int c;
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SourceValidateProcPtr SourceValidate;
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/*
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* SourceValidate is used by the software cursor code
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* to pull the cursor off of the screen when reading
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* bits from the frame buffer. Bypassing this function
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* leaves the software cursor in place
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*/
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SourceValidate = pScreen->SourceValidate;
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pScreen->SourceValidate = NULL;
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for (c = 0; c < xf86_config->num_crtc; c++) {
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xf86CrtcPtr crtc = xf86_config->crtc[c];
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if (crtc->transform_in_use && crtc->enabled) {
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RegionRec crtc_damage;
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/* compute portion of damage that overlaps crtc */
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RegionInit(&crtc_damage, &crtc->bounds, 1);
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RegionIntersect(&crtc_damage, &crtc_damage, region);
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/* update damaged region */
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if (RegionNotEmpty(&crtc_damage))
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xf86RotateCrtcRedisplay(crtc, &crtc_damage);
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RegionUninit(&crtc_damage);
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}
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}
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pScreen->SourceValidate = SourceValidate;
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DamageEmpty(damage);
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}
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return TRUE;
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}
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static void
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xf86RotateBlockHandler(ScreenPtr pScreen,
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pointer pTimeout, pointer pReadmask)
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{
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ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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Bool rotation_active;
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rotation_active = xf86RotateRedisplay(pScreen);
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pScreen->BlockHandler = xf86_config->BlockHandler;
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(*pScreen->BlockHandler) (pScreen, pTimeout, pReadmask);
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/* cannot avoid re-wrapping until all wrapping is audited */
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xf86_config->BlockHandler = pScreen->BlockHandler;
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pScreen->BlockHandler = xf86RotateBlockHandler;
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}
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void
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xf86RotateDestroy(xf86CrtcPtr crtc)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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/* Free memory from rotation */
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if (crtc->rotatedPixmap || crtc->rotatedData) {
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crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
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crtc->rotatedData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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for (c = 0; c < xf86_config->num_crtc; c++)
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if (xf86_config->crtc[c]->rotatedData)
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return;
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/*
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* Clean up damage structures when no crtcs are rotated
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*/
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if (xf86_config->rotation_damage) {
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DrawablePtr screenDrawable = NULL;
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if (pScreen && pScreen->root)
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screenDrawable = &pScreen->root->drawable;
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/* Free damage structure */
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if (xf86_config->rotation_damage_registered) {
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if (screenDrawable)
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DamageUnregister(screenDrawable,
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xf86_config->rotation_damage);
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xf86_config->rotation_damage_registered = FALSE;
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DisableLimitedSchedulingLatency();
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}
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if (screenDrawable)
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DamageDestroy(xf86_config->rotation_damage);
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xf86_config->rotation_damage = NULL;
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}
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}
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void
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xf86RotateFreeShadow(ScrnInfoPtr pScrn)
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{
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xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
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int c;
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for (c = 0; c < config->num_crtc; c++) {
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xf86CrtcPtr crtc = config->crtc[c];
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if (crtc->rotatedPixmap || crtc->rotatedData) {
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crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
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crtc->rotatedData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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}
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}
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void
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xf86RotateCloseScreen(ScreenPtr screen)
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{
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ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
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int c;
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for (c = 0; c < xf86_config->num_crtc; c++)
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xf86RotateDestroy(xf86_config->crtc[c]);
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}
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static Bool
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xf86CrtcFitsScreen(xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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BoxRec b;
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/* When called before PreInit, the driver is
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* presumably doing load detect
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*/
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if (pScrn->is_gpu) {
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ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
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if (pScreen->current_master)
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pScrn = xf86ScreenToScrn(pScreen->current_master);
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}
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if (pScrn->virtualX == 0 || pScrn->virtualY == 0)
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return TRUE;
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b.x1 = 0;
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b.y1 = 0;
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b.x2 = crtc->mode.HDisplay;
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b.y2 = crtc->mode.VDisplay;
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if (crtc_to_fb)
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pixman_f_transform_bounds(crtc_to_fb, &b);
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else {
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b.x1 += crtc->x;
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b.y1 += crtc->y;
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b.x2 += crtc->x;
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b.y2 += crtc->y;
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}
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return (0 <= b.x1 && b.x2 <= pScrn->virtualX &&
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0 <= b.y1 && b.y2 <= pScrn->virtualY);
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}
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Bool
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xf86CrtcRotate(xf86CrtcPtr crtc)
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{
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ScrnInfoPtr pScrn = crtc->scrn;
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xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
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ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
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PictTransform crtc_to_fb;
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struct pict_f_transform f_crtc_to_fb, f_fb_to_crtc;
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xFixed *new_params = NULL;
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int new_nparams = 0;
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PictFilterPtr new_filter = NULL;
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int new_width = 0;
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int new_height = 0;
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RRTransformPtr transform = NULL;
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Bool damage = FALSE;
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if (crtc->transformPresent)
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transform = &crtc->transform;
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if (!RRTransformCompute(crtc->x, crtc->y,
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crtc->mode.HDisplay, crtc->mode.VDisplay,
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crtc->rotation,
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transform,
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&crtc_to_fb,
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&f_crtc_to_fb,
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&f_fb_to_crtc) &&
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xf86CrtcFitsScreen(crtc, &f_crtc_to_fb)) {
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/*
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* If the untranslated transformation is the identity,
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* disable the shadow buffer
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*/
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xf86RotateDestroy(crtc);
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crtc->transform_in_use = FALSE;
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free(new_params);
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new_params = NULL;
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new_nparams = 0;
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new_filter = NULL;
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new_width = 0;
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new_height = 0;
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}
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else {
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if (crtc->driverIsPerformingTransform) {
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xf86RotateDestroy(crtc);
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}
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else {
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/*
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* these are the size of the shadow pixmap, which
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* matches the mode, not the pre-rotated copy in the
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* frame buffer
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*/
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int width = crtc->mode.HDisplay;
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int height = crtc->mode.VDisplay;
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void *shadowData = crtc->rotatedData;
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PixmapPtr shadow = crtc->rotatedPixmap;
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int old_width = shadow ? shadow->drawable.width : 0;
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int old_height = shadow ? shadow->drawable.height : 0;
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/* Allocate memory for rotation */
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if (old_width != width || old_height != height) {
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if (shadow || shadowData) {
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crtc->funcs->shadow_destroy(crtc, shadow, shadowData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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shadowData = crtc->funcs->shadow_allocate(crtc, width, height);
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if (!shadowData)
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goto bail1;
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crtc->rotatedData = shadowData;
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/* shadow will be damaged in xf86RotatePrepare */
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}
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else {
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/* mark shadowed area as damaged so it will be repainted */
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damage = TRUE;
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}
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if (!xf86_config->rotation_damage) {
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/* Create damage structure */
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xf86_config->rotation_damage = DamageCreate(NULL, NULL,
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DamageReportNone,
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TRUE, pScreen,
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pScreen);
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if (!xf86_config->rotation_damage)
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goto bail2;
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/* Wrap block handler */
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if (!xf86_config->BlockHandler) {
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xf86_config->BlockHandler = pScreen->BlockHandler;
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pScreen->BlockHandler = xf86RotateBlockHandler;
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}
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}
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if (0) {
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bail2:
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if (shadow || shadowData) {
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crtc->funcs->shadow_destroy(crtc, shadow, shadowData);
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crtc->rotatedPixmap = NULL;
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crtc->rotatedData = NULL;
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}
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bail1:
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if (old_width && old_height)
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crtc->rotatedPixmap =
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crtc->funcs->shadow_create(crtc, NULL, old_width,
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old_height);
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return FALSE;
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}
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}
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#ifdef RANDR_12_INTERFACE
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if (transform) {
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if (transform->nparams) {
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new_params = malloc(transform->nparams * sizeof(xFixed));
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if (new_params) {
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memcpy(new_params, transform->params,
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transform->nparams * sizeof(xFixed));
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new_nparams = transform->nparams;
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new_filter = transform->filter;
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}
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}
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else
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new_filter = transform->filter;
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if (new_filter) {
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new_width = new_filter->width;
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new_height = new_filter->height;
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}
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}
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#endif
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crtc->transform_in_use = TRUE;
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}
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crtc->crtc_to_framebuffer = crtc_to_fb;
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crtc->f_crtc_to_framebuffer = f_crtc_to_fb;
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crtc->f_framebuffer_to_crtc = f_fb_to_crtc;
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free(crtc->params);
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crtc->params = new_params;
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crtc->nparams = new_nparams;
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crtc->filter = new_filter;
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crtc->filter_width = new_width;
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crtc->filter_height = new_height;
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crtc->bounds.x1 = 0;
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crtc->bounds.x2 = crtc->mode.HDisplay;
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crtc->bounds.y1 = 0;
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crtc->bounds.y2 = crtc->mode.VDisplay;
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pixman_f_transform_bounds(&f_crtc_to_fb, &crtc->bounds);
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if (damage)
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xf86CrtcDamageShadow(crtc);
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/* All done */
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return TRUE;
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}
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