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-rw-r--r--xorg-server/hw/xfree86/dri2/dri2.c2459
1 files changed, 1232 insertions, 1227 deletions
diff --git a/xorg-server/hw/xfree86/dri2/dri2.c b/xorg-server/hw/xfree86/dri2/dri2.c
index 7d6f772d7..10be59953 100644
--- a/xorg-server/hw/xfree86/dri2/dri2.c
+++ b/xorg-server/hw/xfree86/dri2/dri2.c
@@ -1,1227 +1,1232 @@
-/*
- * Copyright © 2007, 2008 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Soft-
- * ware"), to deal in the Software without restriction, including without
- * limitation the rights to use, copy, modify, merge, publish, distribute,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, provided that the above copyright
- * notice(s) and this permission notice appear in all copies of the Soft-
- * ware and that both the above copyright notice(s) and this permission
- * notice appear in supporting documentation.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
- * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
- * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
- * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
- * QUENTIAL 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 PERFOR-
- * MANCE OF THIS SOFTWARE.
- *
- * Except as contained in this notice, the name of a copyright holder shall
- * not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization of
- * the copyright holder.
- *
- * Authors:
- * Kristian Høgsberg (krh@redhat.com)
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <errno.h>
-#ifdef WITH_LIBDRM
-#include <xf86drm.h>
-#endif
-#include "xf86Module.h"
-#include "list.h"
-#include "scrnintstr.h"
-#include "windowstr.h"
-#include "dixstruct.h"
-#include "dri2.h"
-#include "xf86VGAarbiter.h"
-
-#include "xf86.h"
-
-CARD8 dri2_major; /* version of DRI2 supported by DDX */
-CARD8 dri2_minor;
-
-static DevPrivateKeyRec dri2ScreenPrivateKeyRec;
-#define dri2ScreenPrivateKey (&dri2ScreenPrivateKeyRec)
-
-static DevPrivateKeyRec dri2WindowPrivateKeyRec;
-#define dri2WindowPrivateKey (&dri2WindowPrivateKeyRec)
-
-static DevPrivateKeyRec dri2PixmapPrivateKeyRec;
-#define dri2PixmapPrivateKey (&dri2PixmapPrivateKeyRec)
-
-static RESTYPE dri2DrawableRes;
-
-typedef struct _DRI2Screen *DRI2ScreenPtr;
-
-typedef struct _DRI2Drawable {
- DRI2ScreenPtr dri2_screen;
- DrawablePtr drawable;
- struct list reference_list;
- int width;
- int height;
- DRI2BufferPtr *buffers;
- int bufferCount;
- unsigned int swapsPending;
- ClientPtr blockedClient;
- Bool blockedOnMsc;
- int swap_interval;
- CARD64 swap_count;
- int64_t target_sbc; /* -1 means no SBC wait outstanding */
- CARD64 last_swap_target; /* most recently queued swap target */
- CARD64 last_swap_msc; /* msc at completion of most recent swap */
- CARD64 last_swap_ust; /* ust at completion of most recent swap */
- int swap_limit; /* for N-buffering */
- unsigned long serialNumber;
-} DRI2DrawableRec, *DRI2DrawablePtr;
-
-typedef struct _DRI2Screen {
- ScreenPtr screen;
- int refcnt;
- unsigned int numDrivers;
- const char **driverNames;
- const char *deviceName;
- int fd;
- unsigned int lastSequence;
-
- DRI2CreateBufferProcPtr CreateBuffer;
- DRI2DestroyBufferProcPtr DestroyBuffer;
- DRI2CopyRegionProcPtr CopyRegion;
- DRI2ScheduleSwapProcPtr ScheduleSwap;
- DRI2GetMSCProcPtr GetMSC;
- DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
- DRI2AuthMagicProcPtr AuthMagic;
-
- HandleExposuresProcPtr HandleExposures;
-
- ConfigNotifyProcPtr ConfigNotify;
-} DRI2ScreenRec;
-
-static DRI2ScreenPtr
-DRI2GetScreen(ScreenPtr pScreen)
-{
- return dixLookupPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey);
-}
-
-static DRI2DrawablePtr
-DRI2GetDrawable(DrawablePtr pDraw)
-{
- WindowPtr pWin;
- PixmapPtr pPixmap;
-
- switch (pDraw->type) {
- case DRAWABLE_WINDOW:
- pWin = (WindowPtr) pDraw;
- return dixLookupPrivate(&pWin->devPrivates, dri2WindowPrivateKey);
- case DRAWABLE_PIXMAP:
- pPixmap = (PixmapPtr) pDraw;
- return dixLookupPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey);
- default:
- return NULL;
- }
-}
-
-static unsigned long
-DRI2DrawableSerial(DrawablePtr pDraw)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- PixmapPtr pPix;
-
- if (pDraw->type != DRAWABLE_WINDOW)
- return pDraw->serialNumber;
-
- pPix = pScreen->GetWindowPixmap((WindowPtr)pDraw);
- return pPix->drawable.serialNumber;
-}
-
-static DRI2DrawablePtr
-DRI2AllocateDrawable(DrawablePtr pDraw)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv;
- CARD64 ust;
- WindowPtr pWin;
- PixmapPtr pPixmap;
-
- pPriv = malloc(sizeof *pPriv);
- if (pPriv == NULL)
- return NULL;
-
- pPriv->dri2_screen = ds;
- pPriv->drawable = pDraw;
- pPriv->width = pDraw->width;
- pPriv->height = pDraw->height;
- pPriv->buffers = NULL;
- pPriv->bufferCount = 0;
- pPriv->swapsPending = 0;
- pPriv->blockedClient = NULL;
- pPriv->blockedOnMsc = FALSE;
- pPriv->swap_count = 0;
- pPriv->target_sbc = -1;
- pPriv->swap_interval = 1;
- /* Initialize last swap target from DDX if possible */
- if (!ds->GetMSC || !(*ds->GetMSC)(pDraw, &ust, &pPriv->last_swap_target))
- pPriv->last_swap_target = 0;
-
- pPriv->swap_limit = 1; /* default to double buffering */
- pPriv->last_swap_msc = 0;
- pPriv->last_swap_ust = 0;
- list_init(&pPriv->reference_list);
- pPriv->serialNumber = DRI2DrawableSerial(pDraw);
-
- if (pDraw->type == DRAWABLE_WINDOW) {
- pWin = (WindowPtr) pDraw;
- dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, pPriv);
- } else {
- pPixmap = (PixmapPtr) pDraw;
- dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, pPriv);
- }
-
- return pPriv;
-}
-
-typedef struct DRI2DrawableRefRec {
- XID id;
- XID dri2_id;
- DRI2InvalidateProcPtr invalidate;
- void *priv;
- struct list link;
-} DRI2DrawableRefRec, *DRI2DrawableRefPtr;
-
-static DRI2DrawableRefPtr
-DRI2LookupDrawableRef(DRI2DrawablePtr pPriv, XID id)
-{
- DRI2DrawableRefPtr ref;
-
- list_for_each_entry(ref, &pPriv->reference_list, link) {
- if (ref->id == id)
- return ref;
- }
-
- return NULL;
-}
-
-static int
-DRI2AddDrawableRef(DRI2DrawablePtr pPriv, XID id, XID dri2_id,
- DRI2InvalidateProcPtr invalidate, void *priv)
-{
- DRI2DrawableRefPtr ref;
-
- ref = malloc(sizeof *ref);
- if (ref == NULL)
- return BadAlloc;
-
- if (!AddResource(dri2_id, dri2DrawableRes, pPriv))
- return BadAlloc;
- if (!DRI2LookupDrawableRef(pPriv, id))
- if (!AddResource(id, dri2DrawableRes, pPriv))
- return BadAlloc;
-
- ref->id = id;
- ref->dri2_id = dri2_id;
- ref->invalidate = invalidate;
- ref->priv = priv;
- list_add(&ref->link, &pPriv->reference_list);
-
- return Success;
-}
-
-int
-DRI2CreateDrawable(ClientPtr client, DrawablePtr pDraw, XID id,
- DRI2InvalidateProcPtr invalidate, void *priv)
-{
- DRI2DrawablePtr pPriv;
- XID dri2_id;
- int rc;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- pPriv = DRI2AllocateDrawable(pDraw);
- if (pPriv == NULL)
- return BadAlloc;
-
- dri2_id = FakeClientID(client->index);
- rc = DRI2AddDrawableRef(pPriv, id, dri2_id, invalidate, priv);
- if (rc != Success)
- return rc;
-
- return Success;
-}
-
-static int DRI2DrawableGone(pointer p, XID id)
-{
- DRI2DrawablePtr pPriv = p;
- DRI2ScreenPtr ds = pPriv->dri2_screen;
- DRI2DrawableRefPtr ref, next;
- WindowPtr pWin;
- PixmapPtr pPixmap;
- DrawablePtr pDraw;
- int i;
-
- list_for_each_entry_safe(ref, next, &pPriv->reference_list, link) {
- if (ref->dri2_id == id) {
- list_del(&ref->link);
- /* If this was the last ref under this X drawable XID,
- * unregister the X drawable resource. */
- if (!DRI2LookupDrawableRef(pPriv, ref->id))
- FreeResourceByType(ref->id, dri2DrawableRes, TRUE);
- free(ref);
- break;
- }
-
- if (ref->id == id) {
- list_del(&ref->link);
- FreeResourceByType(ref->dri2_id, dri2DrawableRes, TRUE);
- free(ref);
- }
- }
-
- if (!list_is_empty(&pPriv->reference_list))
- return Success;
-
- pDraw = pPriv->drawable;
- if (pDraw->type == DRAWABLE_WINDOW) {
- pWin = (WindowPtr) pDraw;
- dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, NULL);
- } else {
- pPixmap = (PixmapPtr) pDraw;
- dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, NULL);
- }
-
- if (pPriv->buffers != NULL) {
- for (i = 0; i < pPriv->bufferCount; i++)
- (*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
-
- free(pPriv->buffers);
- }
-
- free(pPriv);
-
- return Success;
-}
-
-static int
-find_attachment(DRI2DrawablePtr pPriv, unsigned attachment)
-{
- int i;
-
- if (pPriv->buffers == NULL) {
- return -1;
- }
-
- for (i = 0; i < pPriv->bufferCount; i++) {
- if ((pPriv->buffers[i] != NULL)
- && (pPriv->buffers[i]->attachment == attachment)) {
- return i;
- }
- }
-
- return -1;
-}
-
-static Bool
-allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
- DRI2DrawablePtr pPriv,
- unsigned int attachment, unsigned int format,
- int dimensions_match, DRI2BufferPtr *buffer)
-{
- int old_buf = find_attachment(pPriv, attachment);
-
- if ((old_buf < 0)
- || !dimensions_match
- || (pPriv->buffers[old_buf]->format != format)) {
- *buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
- pPriv->serialNumber = DRI2DrawableSerial(pDraw);
- return TRUE;
-
- } else {
- *buffer = pPriv->buffers[old_buf];
- pPriv->buffers[old_buf] = NULL;
- return FALSE;
- }
-}
-
-static void
-update_dri2_drawable_buffers(DRI2DrawablePtr pPriv, DrawablePtr pDraw,
- DRI2BufferPtr *buffers, int *out_count, int *width, int *height)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- int i;
-
- if (pPriv->buffers != NULL) {
- for (i = 0; i < pPriv->bufferCount; i++) {
- if (pPriv->buffers[i] != NULL) {
- (*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
- }
- }
-
- free(pPriv->buffers);
- }
-
- pPriv->buffers = buffers;
- pPriv->bufferCount = *out_count;
- pPriv->width = pDraw->width;
- pPriv->height = pDraw->height;
- *width = pPriv->width;
- *height = pPriv->height;
-}
-
-static DRI2BufferPtr *
-do_get_buffers(DrawablePtr pDraw, int *width, int *height,
- unsigned int *attachments, int count, int *out_count,
- int has_format)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
- DRI2BufferPtr *buffers;
- int need_real_front = 0;
- int need_fake_front = 0;
- int have_fake_front = 0;
- int front_format = 0;
- int dimensions_match;
- int buffers_changed = 0;
- int i;
-
- if (!pPriv) {
- *width = pDraw->width;
- *height = pDraw->height;
- *out_count = 0;
- return NULL;
- }
-
- dimensions_match = (pDraw->width == pPriv->width)
- && (pDraw->height == pPriv->height)
- && (pPriv->serialNumber == DRI2DrawableSerial(pDraw));
-
- buffers = calloc((count + 1), sizeof(buffers[0]));
-
- for (i = 0; i < count; i++) {
- const unsigned attachment = *(attachments++);
- const unsigned format = (has_format) ? *(attachments++) : 0;
-
- if (allocate_or_reuse_buffer(pDraw, ds, pPriv, attachment,
- format, dimensions_match,
- &buffers[i]))
- buffers_changed = 1;
-
- if (buffers[i] == NULL)
- goto err_out;
-
- /* If the drawable is a window and the front-buffer is requested,
- * silently add the fake front-buffer to the list of requested
- * attachments. The counting logic in the loop accounts for the case
- * where the client requests both the fake and real front-buffer.
- */
- if (attachment == DRI2BufferBackLeft) {
- need_real_front++;
- front_format = format;
- }
-
- if (attachment == DRI2BufferFrontLeft) {
- need_real_front--;
- front_format = format;
-
- if (pDraw->type == DRAWABLE_WINDOW) {
- need_fake_front++;
- }
- }
-
- if (pDraw->type == DRAWABLE_WINDOW) {
- if (attachment == DRI2BufferFakeFrontLeft) {
- need_fake_front--;
- have_fake_front = 1;
- }
- }
- }
-
- if (need_real_front > 0) {
- if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFrontLeft,
- front_format, dimensions_match,
- &buffers[i]))
- buffers_changed = 1;
-
- if (buffers[i] == NULL)
- goto err_out;
- i++;
- }
-
- if (need_fake_front > 0) {
- if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFakeFrontLeft,
- front_format, dimensions_match,
- &buffers[i]))
- buffers_changed = 1;
-
- if (buffers[i] == NULL)
- goto err_out;
-
- i++;
- have_fake_front = 1;
- }
-
- *out_count = i;
-
- update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
-
- /* If the client is getting a fake front-buffer, pre-fill it with the
- * contents of the real front-buffer. This ensures correct operation of
- * applications that call glXWaitX before calling glDrawBuffer.
- */
- if (have_fake_front && buffers_changed) {
- BoxRec box;
- RegionRec region;
-
- box.x1 = 0;
- box.y1 = 0;
- box.x2 = pPriv->width;
- box.y2 = pPriv->height;
- RegionInit(&region, &box, 0);
-
- DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
- DRI2BufferFrontLeft);
- }
-
- return pPriv->buffers;
-
-err_out:
-
- *out_count = 0;
-
- for (i = 0; i < count; i++) {
- if (buffers[i] != NULL)
- (*ds->DestroyBuffer)(pDraw, buffers[i]);
- }
-
- free(buffers);
- buffers = NULL;
-
- update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
-
- return buffers;
-}
-
-DRI2BufferPtr *
-DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height,
- unsigned int *attachments, int count, int *out_count)
-{
- return do_get_buffers(pDraw, width, height, attachments, count,
- out_count, FALSE);
-}
-
-DRI2BufferPtr *
-DRI2GetBuffersWithFormat(DrawablePtr pDraw, int *width, int *height,
- unsigned int *attachments, int count, int *out_count)
-{
- return do_get_buffers(pDraw, width, height, attachments, count,
- out_count, TRUE);
-}
-
-static void
-DRI2InvalidateDrawable(DrawablePtr pDraw)
-{
- DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
- DRI2DrawableRefPtr ref;
-
- if (!pPriv)
- return;
-
- list_for_each_entry(ref, &pPriv->reference_list, link)
- ref->invalidate(pDraw, ref->priv);
-}
-
-/*
- * In the direct rendered case, we throttle the clients that have more
- * than their share of outstanding swaps (and thus busy buffers) when a
- * new GetBuffers request is received. In the AIGLX case, we allow the
- * client to get the new buffers, but throttle when the next GLX request
- * comes in (see __glXDRIcontextWait()).
- */
-Bool
-DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw)
-{
- DRI2DrawablePtr pPriv;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return FALSE;
-
- /* Throttle to swap limit */
- if ((pPriv->swapsPending >= pPriv->swap_limit) &&
- !pPriv->blockedClient) {
- ResetCurrentRequest(client);
- client->sequence--;
- IgnoreClient(client);
- pPriv->blockedClient = client;
- return TRUE;
- }
-
- return FALSE;
-}
-
-static void
-__DRI2BlockClient(ClientPtr client, DRI2DrawablePtr pPriv)
-{
- if (pPriv->blockedClient == NULL) {
- IgnoreClient(client);
- pPriv->blockedClient = client;
- }
-}
-
-void
-DRI2BlockClient(ClientPtr client, DrawablePtr pDraw)
-{
- DRI2DrawablePtr pPriv;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return;
-
- __DRI2BlockClient(client, pPriv);
- pPriv->blockedOnMsc = TRUE;
-}
-
-int
-DRI2CopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
- unsigned int dest, unsigned int src)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv;
- DRI2BufferPtr pDestBuffer, pSrcBuffer;
- int i;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return BadDrawable;
-
- pDestBuffer = NULL;
- pSrcBuffer = NULL;
- for (i = 0; i < pPriv->bufferCount; i++)
- {
- if (pPriv->buffers[i]->attachment == dest)
- pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
- if (pPriv->buffers[i]->attachment == src)
- pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
- }
- if (pSrcBuffer == NULL || pDestBuffer == NULL)
- return BadValue;
-
- (*ds->CopyRegion)(pDraw, pRegion, pDestBuffer, pSrcBuffer);
-
- return Success;
-}
-
-/* Can this drawable be page flipped? */
-Bool
-DRI2CanFlip(DrawablePtr pDraw)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- WindowPtr pWin, pRoot;
- PixmapPtr pWinPixmap, pRootPixmap;
-
- if (pDraw->type == DRAWABLE_PIXMAP)
- return TRUE;
-
- pRoot = pScreen->root;
- pRootPixmap = pScreen->GetWindowPixmap(pRoot);
-
- pWin = (WindowPtr) pDraw;
- pWinPixmap = pScreen->GetWindowPixmap(pWin);
- if (pRootPixmap != pWinPixmap)
- return FALSE;
- if (!RegionEqual(&pWin->clipList, &pRoot->winSize))
- return FALSE;
-
- /* Does the window match the pixmap exactly? */
- if (pDraw->x != 0 ||
- pDraw->y != 0 ||
-#ifdef COMPOSITE
- pDraw->x != pWinPixmap->screen_x ||
- pDraw->y != pWinPixmap->screen_y ||
-#endif
- pDraw->width != pWinPixmap->drawable.width ||
- pDraw->height != pWinPixmap->drawable.height)
- return FALSE;
-
- return TRUE;
-}
-
-/* Can we do a pixmap exchange instead of a blit? */
-Bool
-DRI2CanExchange(DrawablePtr pDraw)
-{
- return FALSE;
-}
-
-void
-DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw, int frame,
- unsigned int tv_sec, unsigned int tv_usec)
-{
- DRI2DrawablePtr pPriv;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return;
-
- ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
- frame, pPriv->swap_count);
-
- if (pPriv->blockedClient)
- AttendClient(pPriv->blockedClient);
-
- pPriv->blockedClient = NULL;
- pPriv->blockedOnMsc = FALSE;
-}
-
-static void
-DRI2WakeClient(ClientPtr client, DrawablePtr pDraw, int frame,
- unsigned int tv_sec, unsigned int tv_usec)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- DRI2DrawablePtr pPriv;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: bad drawable\n", __func__);
- return;
- }
-
- /*
- * Swap completed.
- * Wake the client iff:
- * - it was waiting on SBC
- * - was blocked due to GLX make current
- * - was blocked due to swap throttling
- * - is not blocked due to an MSC wait
- */
- if (pPriv->target_sbc != -1 &&
- pPriv->target_sbc <= pPriv->swap_count) {
- ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
- frame, pPriv->swap_count);
- pPriv->target_sbc = -1;
-
- AttendClient(pPriv->blockedClient);
- pPriv->blockedClient = NULL;
- } else if (pPriv->target_sbc == -1 && !pPriv->blockedOnMsc) {
- if (pPriv->blockedClient) {
- AttendClient(pPriv->blockedClient);
- pPriv->blockedClient = NULL;
- }
- }
-}
-
-void
-DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw, int frame,
- unsigned int tv_sec, unsigned int tv_usec, int type,
- DRI2SwapEventPtr swap_complete, void *swap_data)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- DRI2DrawablePtr pPriv;
- CARD64 ust = 0;
- BoxRec box;
- RegionRec region;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: bad drawable\n", __func__);
- return;
- }
-
- pPriv->swapsPending--;
- pPriv->swap_count++;
-
- box.x1 = 0;
- box.y1 = 0;
- box.x2 = pDraw->width;
- box.y2 = pDraw->height;
- RegionInit(&region, &box, 0);
- DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
- DRI2BufferFrontLeft);
-
- ust = ((CARD64)tv_sec * 1000000) + tv_usec;
- if (swap_complete)
- swap_complete(client, swap_data, type, ust, frame, pPriv->swap_count);
-
- pPriv->last_swap_msc = frame;
- pPriv->last_swap_ust = ust;
-
- DRI2WakeClient(client, pDraw, frame, tv_sec, tv_usec);
-}
-
-Bool
-DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable)
-{
- DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
-
- /* If we're currently waiting for a swap on this drawable, reset
- * the request and suspend the client. We only support one
- * blocked client per drawable. */
- if ((pPriv->swapsPending) &&
- pPriv->blockedClient == NULL) {
- ResetCurrentRequest(client);
- client->sequence--;
- __DRI2BlockClient(client, pPriv);
- return TRUE;
- }
-
- return FALSE;
-}
-
-int
-DRI2SwapBuffers(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
- CARD64 divisor, CARD64 remainder, CARD64 *swap_target,
- DRI2SwapEventPtr func, void *data)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv;
- DRI2BufferPtr pDestBuffer = NULL, pSrcBuffer = NULL;
- int ret, i;
- CARD64 ust, current_msc;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: bad drawable\n", __func__);
- return BadDrawable;
- }
-
- for (i = 0; i < pPriv->bufferCount; i++) {
- if (pPriv->buffers[i]->attachment == DRI2BufferFrontLeft)
- pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
- if (pPriv->buffers[i]->attachment == DRI2BufferBackLeft)
- pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
- }
- if (pSrcBuffer == NULL || pDestBuffer == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: drawable has no back or front?\n", __func__);
- return BadDrawable;
- }
-
- /* Old DDX or no swap interval, just blit */
- if (!ds->ScheduleSwap || !pPriv->swap_interval) {
- BoxRec box;
- RegionRec region;
-
- box.x1 = 0;
- box.y1 = 0;
- box.x2 = pDraw->width;
- box.y2 = pDraw->height;
- RegionInit(&region, &box, 0);
-
- pPriv->swapsPending++;
-
- (*ds->CopyRegion)(pDraw, &region, pDestBuffer, pSrcBuffer);
- DRI2SwapComplete(client, pDraw, target_msc, 0, 0, DRI2_BLIT_COMPLETE,
- func, data);
- return Success;
- }
-
- /*
- * In the simple glXSwapBuffers case, all params will be 0, and we just
- * need to schedule a swap for the last swap target + the swap interval.
- */
- if (target_msc == 0 && divisor == 0 && remainder == 0) {
- /* If the current vblank count of the drawable's crtc is lower
- * than the count stored in last_swap_target from a previous swap
- * then reinitialize last_swap_target to the current crtc's msc,
- * otherwise the swap will hang. This will happen if the drawable
- * is moved to a crtc with a lower refresh rate, or a crtc that just
- * got enabled.
- */
- if (ds->GetMSC) {
- if (!(*ds->GetMSC)(pDraw, &ust, &current_msc))
- pPriv->last_swap_target = 0;
-
- if (current_msc < pPriv->last_swap_target)
- pPriv->last_swap_target = current_msc;
-
- }
-
- /*
- * Swap target for this swap is last swap target + swap interval since
- * we have to account for the current swap count, interval, and the
- * number of pending swaps.
- */
- *swap_target = pPriv->last_swap_target + pPriv->swap_interval;
-
- } else {
- /* glXSwapBuffersMscOML could have a 0 target_msc, honor it */
- *swap_target = target_msc;
- }
-
- pPriv->swapsPending++;
- ret = (*ds->ScheduleSwap)(client, pDraw, pDestBuffer, pSrcBuffer,
- swap_target, divisor, remainder, func, data);
- if (!ret) {
- pPriv->swapsPending--; /* didn't schedule */
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: driver failed to schedule swap\n", __func__);
- return BadDrawable;
- }
-
- pPriv->last_swap_target = *swap_target;
-
- /* According to spec, return expected swapbuffers count SBC after this swap
- * will complete.
- */
- *swap_target = pPriv->swap_count + pPriv->swapsPending;
-
- DRI2InvalidateDrawable(pDraw);
-
- return Success;
-}
-
-void
-DRI2SwapInterval(DrawablePtr pDrawable, int interval)
-{
- ScreenPtr pScreen = pDrawable->pScreen;
- DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
-
- if (pPriv == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: bad drawable\n", __func__);
- return;
- }
-
- /* fixme: check against arbitrary max? */
- pPriv->swap_interval = interval;
-}
-
-int
-DRI2GetMSC(DrawablePtr pDraw, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
-{
- ScreenPtr pScreen = pDraw->pScreen;
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv;
- Bool ret;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL) {
- xf86DrvMsg(pScreen->myNum, X_ERROR,
- "[DRI2] %s: bad drawable\n", __func__);
- return BadDrawable;
- }
-
- if (!ds->GetMSC) {
- *ust = 0;
- *msc = 0;
- *sbc = pPriv->swap_count;
- return Success;
- }
-
- /*
- * Spec needs to be updated to include unmapped or redirected
- * drawables
- */
-
- ret = (*ds->GetMSC)(pDraw, ust, msc);
- if (!ret)
- return BadDrawable;
-
- *sbc = pPriv->swap_count;
-
- return Success;
-}
-
-int
-DRI2WaitMSC(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
- CARD64 divisor, CARD64 remainder)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
- DRI2DrawablePtr pPriv;
- Bool ret;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return BadDrawable;
-
- /* Old DDX just completes immediately */
- if (!ds->ScheduleWaitMSC) {
- DRI2WaitMSCComplete(client, pDraw, target_msc, 0, 0);
-
- return Success;
- }
-
- ret = (*ds->ScheduleWaitMSC)(client, pDraw, target_msc, divisor, remainder);
- if (!ret)
- return BadDrawable;
-
- return Success;
-}
-
-int
-DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw, CARD64 target_sbc)
-{
- DRI2DrawablePtr pPriv;
-
- pPriv = DRI2GetDrawable(pDraw);
- if (pPriv == NULL)
- return BadDrawable;
-
- /* target_sbc == 0 means to block until all pending swaps are
- * finished. Recalculate target_sbc to get that behaviour.
- */
- if (target_sbc == 0)
- target_sbc = pPriv->swap_count + pPriv->swapsPending;
-
- /* If current swap count already >= target_sbc, reply and
- * return immediately with (ust, msc, sbc) triplet of
- * most recent completed swap.
- */
- if (pPriv->swap_count >= target_sbc) {
- ProcDRI2WaitMSCReply(client, pPriv->last_swap_ust,
- pPriv->last_swap_msc, pPriv->swap_count);
- return Success;
- }
-
- pPriv->target_sbc = target_sbc;
- __DRI2BlockClient(client, pPriv);
-
- return Success;
-}
-
-Bool
-DRI2HasSwapControl(ScreenPtr pScreen)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
-
- return ds->ScheduleSwap && ds->GetMSC;
-}
-
-Bool
-DRI2Connect(ScreenPtr pScreen, unsigned int driverType, int *fd,
- const char **driverName, const char **deviceName)
-{
- DRI2ScreenPtr ds;
-
- if (!dixPrivateKeyRegistered(dri2ScreenPrivateKey))
- return FALSE;
-
- ds = DRI2GetScreen(pScreen);
- if (ds == NULL || driverType >= ds->numDrivers ||
- !ds->driverNames[driverType])
- return FALSE;
-
- *fd = ds->fd;
- *driverName = ds->driverNames[driverType];
- *deviceName = ds->deviceName;
-
- return TRUE;
-}
-
-Bool
-DRI2Authenticate(ScreenPtr pScreen, uint32_t magic)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
-
- if (ds == NULL || (*ds->AuthMagic)(ds->fd, magic))
- return FALSE;
-
- return TRUE;
-}
-
-static int
-DRI2ConfigNotify(WindowPtr pWin, int x, int y, int w, int h, int bw,
- WindowPtr pSib)
-{
- DrawablePtr pDraw = (DrawablePtr)pWin;
- ScreenPtr pScreen = pDraw->pScreen;
- DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
- DRI2DrawablePtr dd = DRI2GetDrawable(pDraw);
- int ret;
-
- if (ds->ConfigNotify) {
- pScreen->ConfigNotify = ds->ConfigNotify;
-
- ret = (*pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
-
- ds->ConfigNotify = pScreen->ConfigNotify;
- pScreen->ConfigNotify = DRI2ConfigNotify;
- if (ret)
- return ret;
- }
-
- if (!dd || (dd->width == w && dd->height == h))
- return Success;
-
- DRI2InvalidateDrawable(pDraw);
- return Success;
-}
-
-Bool
-DRI2ScreenInit(ScreenPtr pScreen, DRI2InfoPtr info)
-{
- DRI2ScreenPtr ds;
- const char* driverTypeNames[] = {
- "DRI", /* DRI2DriverDRI */
- "VDPAU", /* DRI2DriverVDPAU */
- };
- unsigned int i;
- CARD8 cur_minor;
-
- if (info->version < 3)
- return FALSE;
-
- if (!xf86VGAarbiterAllowDRI(pScreen)) {
- xf86DrvMsg(pScreen->myNum, X_WARNING,
- "[DRI2] Direct rendering is not supported when VGA arb is necessary for the device\n");
- return FALSE;
- }
-
- if (!dixRegisterPrivateKey(&dri2ScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
- return FALSE;
-
- if (!dixRegisterPrivateKey(&dri2WindowPrivateKeyRec, PRIVATE_WINDOW, 0))
- return FALSE;
-
- if (!dixRegisterPrivateKey(&dri2PixmapPrivateKeyRec, PRIVATE_PIXMAP, 0))
- return FALSE;
-
- ds = calloc(1, sizeof *ds);
- if (!ds)
- return FALSE;
-
- ds->screen = pScreen;
- ds->fd = info->fd;
- ds->deviceName = info->deviceName;
- dri2_major = 1;
-
- ds->CreateBuffer = info->CreateBuffer;
- ds->DestroyBuffer = info->DestroyBuffer;
- ds->CopyRegion = info->CopyRegion;
-
- if (info->version >= 4) {
- ds->ScheduleSwap = info->ScheduleSwap;
- ds->ScheduleWaitMSC = info->ScheduleWaitMSC;
- ds->GetMSC = info->GetMSC;
- cur_minor = 3;
- } else {
- cur_minor = 1;
- }
-
- if (info->version >= 5) {
- ds->AuthMagic = info->AuthMagic;
- }
-
- /*
- * if the driver doesn't provide an AuthMagic function or the info struct
- * version is too low, it relies on the old method (using libdrm) or fail
- */
- if (!ds->AuthMagic)
-#ifdef WITH_LIBDRM
- ds->AuthMagic = drmAuthMagic;
-#else
- goto err_out;
-#endif
-
- /* Initialize minor if needed and set to minimum provied by DDX */
- if (!dri2_minor || dri2_minor > cur_minor)
- dri2_minor = cur_minor;
-
- if (info->version == 3 || info->numDrivers == 0) {
- /* Driver too old: use the old-style driverName field */
- ds->numDrivers = 1;
- ds->driverNames = malloc(sizeof(*ds->driverNames));
- if (!ds->driverNames)
- goto err_out;
- ds->driverNames[0] = info->driverName;
- } else {
- ds->numDrivers = info->numDrivers;
- ds->driverNames = malloc(info->numDrivers * sizeof(*ds->driverNames));
- if (!ds->driverNames)
- goto err_out;
- memcpy(ds->driverNames, info->driverNames,
- info->numDrivers * sizeof(*ds->driverNames));
- }
-
- dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, ds);
-
- ds->ConfigNotify = pScreen->ConfigNotify;
- pScreen->ConfigNotify = DRI2ConfigNotify;
-
- xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] Setup complete\n");
- for (i = 0; i < sizeof(driverTypeNames) / sizeof(driverTypeNames[0]); i++) {
- if (i < ds->numDrivers && ds->driverNames[i]) {
- xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] %s driver: %s\n",
- driverTypeNames[i], ds->driverNames[i]);
- }
- }
-
- return TRUE;
-
-err_out:
- xf86DrvMsg(pScreen->myNum, X_WARNING,
- "[DRI2] Initialization failed for info version %d.\n", info->version);
- free(ds);
- return FALSE;
-}
-
-void
-DRI2CloseScreen(ScreenPtr pScreen)
-{
- DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
-
- free(ds->driverNames);
- free(ds);
- dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, NULL);
-}
-
-extern ExtensionModule dri2ExtensionModule;
-
-static pointer
-DRI2Setup(pointer module, pointer opts, int *errmaj, int *errmin)
-{
- static Bool setupDone = FALSE;
-
- dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone, "DRI2Drawable");
-
- if (!setupDone)
- {
- setupDone = TRUE;
- LoadExtension(&dri2ExtensionModule, FALSE);
- }
- else
- {
- if (errmaj)
- *errmaj = LDR_ONCEONLY;
- }
-
- return (pointer) 1;
-}
-
-static XF86ModuleVersionInfo DRI2VersRec =
-{
- "dri2",
- MODULEVENDORSTRING,
- MODINFOSTRING1,
- MODINFOSTRING2,
- XORG_VERSION_CURRENT,
- 1, 2, 0,
- ABI_CLASS_EXTENSION,
- ABI_EXTENSION_VERSION,
- MOD_CLASS_NONE,
- { 0, 0, 0, 0 }
-};
-
-_X_EXPORT XF86ModuleData dri2ModuleData = { &DRI2VersRec, DRI2Setup, NULL };
-
-void
-DRI2Version(int *major, int *minor)
-{
- if (major != NULL)
- *major = DRI2VersRec.majorversion;
-
- if (minor != NULL)
- *minor = DRI2VersRec.minorversion;
-}
+/*
+ * Copyright © 2007, 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL 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 PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ * Kristian Høgsberg (krh@redhat.com)
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <errno.h>
+#ifdef WITH_LIBDRM
+#include <xf86drm.h>
+#endif
+#include "xf86Module.h"
+#include "list.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "dixstruct.h"
+#include "dri2.h"
+#include "xf86VGAarbiter.h"
+
+#include "xf86.h"
+
+CARD8 dri2_major; /* version of DRI2 supported by DDX */
+CARD8 dri2_minor;
+
+static DevPrivateKeyRec dri2ScreenPrivateKeyRec;
+#define dri2ScreenPrivateKey (&dri2ScreenPrivateKeyRec)
+
+static DevPrivateKeyRec dri2WindowPrivateKeyRec;
+#define dri2WindowPrivateKey (&dri2WindowPrivateKeyRec)
+
+static DevPrivateKeyRec dri2PixmapPrivateKeyRec;
+#define dri2PixmapPrivateKey (&dri2PixmapPrivateKeyRec)
+
+static RESTYPE dri2DrawableRes;
+
+typedef struct _DRI2Screen *DRI2ScreenPtr;
+
+typedef struct _DRI2Drawable {
+ DRI2ScreenPtr dri2_screen;
+ DrawablePtr drawable;
+ struct list reference_list;
+ int width;
+ int height;
+ DRI2BufferPtr *buffers;
+ int bufferCount;
+ unsigned int swapsPending;
+ ClientPtr blockedClient;
+ Bool blockedOnMsc;
+ int swap_interval;
+ CARD64 swap_count;
+ int64_t target_sbc; /* -1 means no SBC wait outstanding */
+ CARD64 last_swap_target; /* most recently queued swap target */
+ CARD64 last_swap_msc; /* msc at completion of most recent swap */
+ CARD64 last_swap_ust; /* ust at completion of most recent swap */
+ int swap_limit; /* for N-buffering */
+ unsigned long serialNumber;
+} DRI2DrawableRec, *DRI2DrawablePtr;
+
+typedef struct _DRI2Screen {
+ ScreenPtr screen;
+ int refcnt;
+ unsigned int numDrivers;
+ const char **driverNames;
+ const char *deviceName;
+ int fd;
+ unsigned int lastSequence;
+
+ DRI2CreateBufferProcPtr CreateBuffer;
+ DRI2DestroyBufferProcPtr DestroyBuffer;
+ DRI2CopyRegionProcPtr CopyRegion;
+ DRI2ScheduleSwapProcPtr ScheduleSwap;
+ DRI2GetMSCProcPtr GetMSC;
+ DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
+ DRI2AuthMagicProcPtr AuthMagic;
+
+ HandleExposuresProcPtr HandleExposures;
+
+ ConfigNotifyProcPtr ConfigNotify;
+} DRI2ScreenRec;
+
+static DRI2ScreenPtr
+DRI2GetScreen(ScreenPtr pScreen)
+{
+ return dixLookupPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey);
+}
+
+static DRI2DrawablePtr
+DRI2GetDrawable(DrawablePtr pDraw)
+{
+ WindowPtr pWin;
+ PixmapPtr pPixmap;
+
+ switch (pDraw->type) {
+ case DRAWABLE_WINDOW:
+ pWin = (WindowPtr) pDraw;
+ return dixLookupPrivate(&pWin->devPrivates, dri2WindowPrivateKey);
+ case DRAWABLE_PIXMAP:
+ pPixmap = (PixmapPtr) pDraw;
+ return dixLookupPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey);
+ default:
+ return NULL;
+ }
+}
+
+static unsigned long
+DRI2DrawableSerial(DrawablePtr pDraw)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ PixmapPtr pPix;
+
+ if (pDraw->type != DRAWABLE_WINDOW)
+ return pDraw->serialNumber;
+
+ pPix = pScreen->GetWindowPixmap((WindowPtr)pDraw);
+ return pPix->drawable.serialNumber;
+}
+
+static DRI2DrawablePtr
+DRI2AllocateDrawable(DrawablePtr pDraw)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv;
+ CARD64 ust;
+ WindowPtr pWin;
+ PixmapPtr pPixmap;
+
+ pPriv = malloc(sizeof *pPriv);
+ if (pPriv == NULL)
+ return NULL;
+
+ pPriv->dri2_screen = ds;
+ pPriv->drawable = pDraw;
+ pPriv->width = pDraw->width;
+ pPriv->height = pDraw->height;
+ pPriv->buffers = NULL;
+ pPriv->bufferCount = 0;
+ pPriv->swapsPending = 0;
+ pPriv->blockedClient = NULL;
+ pPriv->blockedOnMsc = FALSE;
+ pPriv->swap_count = 0;
+ pPriv->target_sbc = -1;
+ pPriv->swap_interval = 1;
+ /* Initialize last swap target from DDX if possible */
+ if (!ds->GetMSC || !(*ds->GetMSC)(pDraw, &ust, &pPriv->last_swap_target))
+ pPriv->last_swap_target = 0;
+
+ pPriv->swap_limit = 1; /* default to double buffering */
+ pPriv->last_swap_msc = 0;
+ pPriv->last_swap_ust = 0;
+ list_init(&pPriv->reference_list);
+ pPriv->serialNumber = DRI2DrawableSerial(pDraw);
+
+ if (pDraw->type == DRAWABLE_WINDOW) {
+ pWin = (WindowPtr) pDraw;
+ dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, pPriv);
+ } else {
+ pPixmap = (PixmapPtr) pDraw;
+ dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, pPriv);
+ }
+
+ return pPriv;
+}
+
+typedef struct DRI2DrawableRefRec {
+ XID id;
+ XID dri2_id;
+ DRI2InvalidateProcPtr invalidate;
+ void *priv;
+ struct list link;
+} DRI2DrawableRefRec, *DRI2DrawableRefPtr;
+
+static DRI2DrawableRefPtr
+DRI2LookupDrawableRef(DRI2DrawablePtr pPriv, XID id)
+{
+ DRI2DrawableRefPtr ref;
+
+ list_for_each_entry(ref, &pPriv->reference_list, link) {
+ if (ref->id == id)
+ return ref;
+ }
+
+ return NULL;
+}
+
+static int
+DRI2AddDrawableRef(DRI2DrawablePtr pPriv, XID id, XID dri2_id,
+ DRI2InvalidateProcPtr invalidate, void *priv)
+{
+ DRI2DrawableRefPtr ref;
+
+ ref = malloc(sizeof *ref);
+ if (ref == NULL)
+ return BadAlloc;
+
+ if (!AddResource(dri2_id, dri2DrawableRes, pPriv)) {
+ free(ref);
+ return BadAlloc;
+ }
+ if (!DRI2LookupDrawableRef(pPriv, id))
+ if (!AddResource(id, dri2DrawableRes, pPriv)) {
+ FreeResourceByType(dri2_id, dri2DrawableRes, TRUE);
+ free(ref);
+ return BadAlloc;
+ }
+
+ ref->id = id;
+ ref->dri2_id = dri2_id;
+ ref->invalidate = invalidate;
+ ref->priv = priv;
+ list_add(&ref->link, &pPriv->reference_list);
+
+ return Success;
+}
+
+int
+DRI2CreateDrawable(ClientPtr client, DrawablePtr pDraw, XID id,
+ DRI2InvalidateProcPtr invalidate, void *priv)
+{
+ DRI2DrawablePtr pPriv;
+ XID dri2_id;
+ int rc;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ pPriv = DRI2AllocateDrawable(pDraw);
+ if (pPriv == NULL)
+ return BadAlloc;
+
+ dri2_id = FakeClientID(client->index);
+ rc = DRI2AddDrawableRef(pPriv, id, dri2_id, invalidate, priv);
+ if (rc != Success)
+ return rc;
+
+ return Success;
+}
+
+static int DRI2DrawableGone(pointer p, XID id)
+{
+ DRI2DrawablePtr pPriv = p;
+ DRI2ScreenPtr ds = pPriv->dri2_screen;
+ DRI2DrawableRefPtr ref, next;
+ WindowPtr pWin;
+ PixmapPtr pPixmap;
+ DrawablePtr pDraw;
+ int i;
+
+ list_for_each_entry_safe(ref, next, &pPriv->reference_list, link) {
+ if (ref->dri2_id == id) {
+ list_del(&ref->link);
+ /* If this was the last ref under this X drawable XID,
+ * unregister the X drawable resource. */
+ if (!DRI2LookupDrawableRef(pPriv, ref->id))
+ FreeResourceByType(ref->id, dri2DrawableRes, TRUE);
+ free(ref);
+ break;
+ }
+
+ if (ref->id == id) {
+ list_del(&ref->link);
+ FreeResourceByType(ref->dri2_id, dri2DrawableRes, TRUE);
+ free(ref);
+ }
+ }
+
+ if (!list_is_empty(&pPriv->reference_list))
+ return Success;
+
+ pDraw = pPriv->drawable;
+ if (pDraw->type == DRAWABLE_WINDOW) {
+ pWin = (WindowPtr) pDraw;
+ dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, NULL);
+ } else {
+ pPixmap = (PixmapPtr) pDraw;
+ dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, NULL);
+ }
+
+ if (pPriv->buffers != NULL) {
+ for (i = 0; i < pPriv->bufferCount; i++)
+ (*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
+
+ free(pPriv->buffers);
+ }
+
+ free(pPriv);
+
+ return Success;
+}
+
+static int
+find_attachment(DRI2DrawablePtr pPriv, unsigned attachment)
+{
+ int i;
+
+ if (pPriv->buffers == NULL) {
+ return -1;
+ }
+
+ for (i = 0; i < pPriv->bufferCount; i++) {
+ if ((pPriv->buffers[i] != NULL)
+ && (pPriv->buffers[i]->attachment == attachment)) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static Bool
+allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
+ DRI2DrawablePtr pPriv,
+ unsigned int attachment, unsigned int format,
+ int dimensions_match, DRI2BufferPtr *buffer)
+{
+ int old_buf = find_attachment(pPriv, attachment);
+
+ if ((old_buf < 0)
+ || !dimensions_match
+ || (pPriv->buffers[old_buf]->format != format)) {
+ *buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
+ pPriv->serialNumber = DRI2DrawableSerial(pDraw);
+ return TRUE;
+
+ } else {
+ *buffer = pPriv->buffers[old_buf];
+ pPriv->buffers[old_buf] = NULL;
+ return FALSE;
+ }
+}
+
+static void
+update_dri2_drawable_buffers(DRI2DrawablePtr pPriv, DrawablePtr pDraw,
+ DRI2BufferPtr *buffers, int *out_count, int *width, int *height)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ int i;
+
+ if (pPriv->buffers != NULL) {
+ for (i = 0; i < pPriv->bufferCount; i++) {
+ if (pPriv->buffers[i] != NULL) {
+ (*ds->DestroyBuffer)(pDraw, pPriv->buffers[i]);
+ }
+ }
+
+ free(pPriv->buffers);
+ }
+
+ pPriv->buffers = buffers;
+ pPriv->bufferCount = *out_count;
+ pPriv->width = pDraw->width;
+ pPriv->height = pDraw->height;
+ *width = pPriv->width;
+ *height = pPriv->height;
+}
+
+static DRI2BufferPtr *
+do_get_buffers(DrawablePtr pDraw, int *width, int *height,
+ unsigned int *attachments, int count, int *out_count,
+ int has_format)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
+ DRI2BufferPtr *buffers;
+ int need_real_front = 0;
+ int need_fake_front = 0;
+ int have_fake_front = 0;
+ int front_format = 0;
+ int dimensions_match;
+ int buffers_changed = 0;
+ int i;
+
+ if (!pPriv) {
+ *width = pDraw->width;
+ *height = pDraw->height;
+ *out_count = 0;
+ return NULL;
+ }
+
+ dimensions_match = (pDraw->width == pPriv->width)
+ && (pDraw->height == pPriv->height)
+ && (pPriv->serialNumber == DRI2DrawableSerial(pDraw));
+
+ buffers = calloc((count + 1), sizeof(buffers[0]));
+
+ for (i = 0; i < count; i++) {
+ const unsigned attachment = *(attachments++);
+ const unsigned format = (has_format) ? *(attachments++) : 0;
+
+ if (allocate_or_reuse_buffer(pDraw, ds, pPriv, attachment,
+ format, dimensions_match,
+ &buffers[i]))
+ buffers_changed = 1;
+
+ if (buffers[i] == NULL)
+ goto err_out;
+
+ /* If the drawable is a window and the front-buffer is requested,
+ * silently add the fake front-buffer to the list of requested
+ * attachments. The counting logic in the loop accounts for the case
+ * where the client requests both the fake and real front-buffer.
+ */
+ if (attachment == DRI2BufferBackLeft) {
+ need_real_front++;
+ front_format = format;
+ }
+
+ if (attachment == DRI2BufferFrontLeft) {
+ need_real_front--;
+ front_format = format;
+
+ if (pDraw->type == DRAWABLE_WINDOW) {
+ need_fake_front++;
+ }
+ }
+
+ if (pDraw->type == DRAWABLE_WINDOW) {
+ if (attachment == DRI2BufferFakeFrontLeft) {
+ need_fake_front--;
+ have_fake_front = 1;
+ }
+ }
+ }
+
+ if (need_real_front > 0) {
+ if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFrontLeft,
+ front_format, dimensions_match,
+ &buffers[i]))
+ buffers_changed = 1;
+
+ if (buffers[i] == NULL)
+ goto err_out;
+ i++;
+ }
+
+ if (need_fake_front > 0) {
+ if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFakeFrontLeft,
+ front_format, dimensions_match,
+ &buffers[i]))
+ buffers_changed = 1;
+
+ if (buffers[i] == NULL)
+ goto err_out;
+
+ i++;
+ have_fake_front = 1;
+ }
+
+ *out_count = i;
+
+ update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
+
+ /* If the client is getting a fake front-buffer, pre-fill it with the
+ * contents of the real front-buffer. This ensures correct operation of
+ * applications that call glXWaitX before calling glDrawBuffer.
+ */
+ if (have_fake_front && buffers_changed) {
+ BoxRec box;
+ RegionRec region;
+
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = pPriv->width;
+ box.y2 = pPriv->height;
+ RegionInit(&region, &box, 0);
+
+ DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
+ DRI2BufferFrontLeft);
+ }
+
+ return pPriv->buffers;
+
+err_out:
+
+ *out_count = 0;
+
+ for (i = 0; i < count; i++) {
+ if (buffers[i] != NULL)
+ (*ds->DestroyBuffer)(pDraw, buffers[i]);
+ }
+
+ free(buffers);
+ buffers = NULL;
+
+ update_dri2_drawable_buffers(pPriv, pDraw, buffers, out_count, width, height);
+
+ return buffers;
+}
+
+DRI2BufferPtr *
+DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height,
+ unsigned int *attachments, int count, int *out_count)
+{
+ return do_get_buffers(pDraw, width, height, attachments, count,
+ out_count, FALSE);
+}
+
+DRI2BufferPtr *
+DRI2GetBuffersWithFormat(DrawablePtr pDraw, int *width, int *height,
+ unsigned int *attachments, int count, int *out_count)
+{
+ return do_get_buffers(pDraw, width, height, attachments, count,
+ out_count, TRUE);
+}
+
+static void
+DRI2InvalidateDrawable(DrawablePtr pDraw)
+{
+ DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
+ DRI2DrawableRefPtr ref;
+
+ if (!pPriv)
+ return;
+
+ list_for_each_entry(ref, &pPriv->reference_list, link)
+ ref->invalidate(pDraw, ref->priv);
+}
+
+/*
+ * In the direct rendered case, we throttle the clients that have more
+ * than their share of outstanding swaps (and thus busy buffers) when a
+ * new GetBuffers request is received. In the AIGLX case, we allow the
+ * client to get the new buffers, but throttle when the next GLX request
+ * comes in (see __glXDRIcontextWait()).
+ */
+Bool
+DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw)
+{
+ DRI2DrawablePtr pPriv;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return FALSE;
+
+ /* Throttle to swap limit */
+ if ((pPriv->swapsPending >= pPriv->swap_limit) &&
+ !pPriv->blockedClient) {
+ ResetCurrentRequest(client);
+ client->sequence--;
+ IgnoreClient(client);
+ pPriv->blockedClient = client;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void
+__DRI2BlockClient(ClientPtr client, DRI2DrawablePtr pPriv)
+{
+ if (pPriv->blockedClient == NULL) {
+ IgnoreClient(client);
+ pPriv->blockedClient = client;
+ }
+}
+
+void
+DRI2BlockClient(ClientPtr client, DrawablePtr pDraw)
+{
+ DRI2DrawablePtr pPriv;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return;
+
+ __DRI2BlockClient(client, pPriv);
+ pPriv->blockedOnMsc = TRUE;
+}
+
+int
+DRI2CopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
+ unsigned int dest, unsigned int src)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv;
+ DRI2BufferPtr pDestBuffer, pSrcBuffer;
+ int i;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return BadDrawable;
+
+ pDestBuffer = NULL;
+ pSrcBuffer = NULL;
+ for (i = 0; i < pPriv->bufferCount; i++)
+ {
+ if (pPriv->buffers[i]->attachment == dest)
+ pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+ if (pPriv->buffers[i]->attachment == src)
+ pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+ }
+ if (pSrcBuffer == NULL || pDestBuffer == NULL)
+ return BadValue;
+
+ (*ds->CopyRegion)(pDraw, pRegion, pDestBuffer, pSrcBuffer);
+
+ return Success;
+}
+
+/* Can this drawable be page flipped? */
+Bool
+DRI2CanFlip(DrawablePtr pDraw)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ WindowPtr pWin, pRoot;
+ PixmapPtr pWinPixmap, pRootPixmap;
+
+ if (pDraw->type == DRAWABLE_PIXMAP)
+ return TRUE;
+
+ pRoot = pScreen->root;
+ pRootPixmap = pScreen->GetWindowPixmap(pRoot);
+
+ pWin = (WindowPtr) pDraw;
+ pWinPixmap = pScreen->GetWindowPixmap(pWin);
+ if (pRootPixmap != pWinPixmap)
+ return FALSE;
+ if (!RegionEqual(&pWin->clipList, &pRoot->winSize))
+ return FALSE;
+
+ /* Does the window match the pixmap exactly? */
+ if (pDraw->x != 0 ||
+ pDraw->y != 0 ||
+#ifdef COMPOSITE
+ pDraw->x != pWinPixmap->screen_x ||
+ pDraw->y != pWinPixmap->screen_y ||
+#endif
+ pDraw->width != pWinPixmap->drawable.width ||
+ pDraw->height != pWinPixmap->drawable.height)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Can we do a pixmap exchange instead of a blit? */
+Bool
+DRI2CanExchange(DrawablePtr pDraw)
+{
+ return FALSE;
+}
+
+void
+DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw, int frame,
+ unsigned int tv_sec, unsigned int tv_usec)
+{
+ DRI2DrawablePtr pPriv;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return;
+
+ ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
+ frame, pPriv->swap_count);
+
+ if (pPriv->blockedClient)
+ AttendClient(pPriv->blockedClient);
+
+ pPriv->blockedClient = NULL;
+ pPriv->blockedOnMsc = FALSE;
+}
+
+static void
+DRI2WakeClient(ClientPtr client, DrawablePtr pDraw, int frame,
+ unsigned int tv_sec, unsigned int tv_usec)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ DRI2DrawablePtr pPriv;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: bad drawable\n", __func__);
+ return;
+ }
+
+ /*
+ * Swap completed.
+ * Wake the client iff:
+ * - it was waiting on SBC
+ * - was blocked due to GLX make current
+ * - was blocked due to swap throttling
+ * - is not blocked due to an MSC wait
+ */
+ if (pPriv->target_sbc != -1 &&
+ pPriv->target_sbc <= pPriv->swap_count) {
+ ProcDRI2WaitMSCReply(client, ((CARD64)tv_sec * 1000000) + tv_usec,
+ frame, pPriv->swap_count);
+ pPriv->target_sbc = -1;
+
+ AttendClient(pPriv->blockedClient);
+ pPriv->blockedClient = NULL;
+ } else if (pPriv->target_sbc == -1 && !pPriv->blockedOnMsc) {
+ if (pPriv->blockedClient) {
+ AttendClient(pPriv->blockedClient);
+ pPriv->blockedClient = NULL;
+ }
+ }
+}
+
+void
+DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw, int frame,
+ unsigned int tv_sec, unsigned int tv_usec, int type,
+ DRI2SwapEventPtr swap_complete, void *swap_data)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ DRI2DrawablePtr pPriv;
+ CARD64 ust = 0;
+ BoxRec box;
+ RegionRec region;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: bad drawable\n", __func__);
+ return;
+ }
+
+ pPriv->swapsPending--;
+ pPriv->swap_count++;
+
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = pDraw->width;
+ box.y2 = pDraw->height;
+ RegionInit(&region, &box, 0);
+ DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
+ DRI2BufferFrontLeft);
+
+ ust = ((CARD64)tv_sec * 1000000) + tv_usec;
+ if (swap_complete)
+ swap_complete(client, swap_data, type, ust, frame, pPriv->swap_count);
+
+ pPriv->last_swap_msc = frame;
+ pPriv->last_swap_ust = ust;
+
+ DRI2WakeClient(client, pDraw, frame, tv_sec, tv_usec);
+}
+
+Bool
+DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable)
+{
+ DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
+
+ /* If we're currently waiting for a swap on this drawable, reset
+ * the request and suspend the client. We only support one
+ * blocked client per drawable. */
+ if ((pPriv->swapsPending) &&
+ pPriv->blockedClient == NULL) {
+ ResetCurrentRequest(client);
+ client->sequence--;
+ __DRI2BlockClient(client, pPriv);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+int
+DRI2SwapBuffers(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
+ CARD64 divisor, CARD64 remainder, CARD64 *swap_target,
+ DRI2SwapEventPtr func, void *data)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv;
+ DRI2BufferPtr pDestBuffer = NULL, pSrcBuffer = NULL;
+ int ret, i;
+ CARD64 ust, current_msc;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: bad drawable\n", __func__);
+ return BadDrawable;
+ }
+
+ for (i = 0; i < pPriv->bufferCount; i++) {
+ if (pPriv->buffers[i]->attachment == DRI2BufferFrontLeft)
+ pDestBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+ if (pPriv->buffers[i]->attachment == DRI2BufferBackLeft)
+ pSrcBuffer = (DRI2BufferPtr) pPriv->buffers[i];
+ }
+ if (pSrcBuffer == NULL || pDestBuffer == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: drawable has no back or front?\n", __func__);
+ return BadDrawable;
+ }
+
+ /* Old DDX or no swap interval, just blit */
+ if (!ds->ScheduleSwap || !pPriv->swap_interval) {
+ BoxRec box;
+ RegionRec region;
+
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = pDraw->width;
+ box.y2 = pDraw->height;
+ RegionInit(&region, &box, 0);
+
+ pPriv->swapsPending++;
+
+ (*ds->CopyRegion)(pDraw, &region, pDestBuffer, pSrcBuffer);
+ DRI2SwapComplete(client, pDraw, target_msc, 0, 0, DRI2_BLIT_COMPLETE,
+ func, data);
+ return Success;
+ }
+
+ /*
+ * In the simple glXSwapBuffers case, all params will be 0, and we just
+ * need to schedule a swap for the last swap target + the swap interval.
+ */
+ if (target_msc == 0 && divisor == 0 && remainder == 0) {
+ /* If the current vblank count of the drawable's crtc is lower
+ * than the count stored in last_swap_target from a previous swap
+ * then reinitialize last_swap_target to the current crtc's msc,
+ * otherwise the swap will hang. This will happen if the drawable
+ * is moved to a crtc with a lower refresh rate, or a crtc that just
+ * got enabled.
+ */
+ if (ds->GetMSC) {
+ if (!(*ds->GetMSC)(pDraw, &ust, &current_msc))
+ pPriv->last_swap_target = 0;
+
+ if (current_msc < pPriv->last_swap_target)
+ pPriv->last_swap_target = current_msc;
+
+ }
+
+ /*
+ * Swap target for this swap is last swap target + swap interval since
+ * we have to account for the current swap count, interval, and the
+ * number of pending swaps.
+ */
+ *swap_target = pPriv->last_swap_target + pPriv->swap_interval;
+
+ } else {
+ /* glXSwapBuffersMscOML could have a 0 target_msc, honor it */
+ *swap_target = target_msc;
+ }
+
+ pPriv->swapsPending++;
+ ret = (*ds->ScheduleSwap)(client, pDraw, pDestBuffer, pSrcBuffer,
+ swap_target, divisor, remainder, func, data);
+ if (!ret) {
+ pPriv->swapsPending--; /* didn't schedule */
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: driver failed to schedule swap\n", __func__);
+ return BadDrawable;
+ }
+
+ pPriv->last_swap_target = *swap_target;
+
+ /* According to spec, return expected swapbuffers count SBC after this swap
+ * will complete.
+ */
+ *swap_target = pPriv->swap_count + pPriv->swapsPending;
+
+ DRI2InvalidateDrawable(pDraw);
+
+ return Success;
+}
+
+void
+DRI2SwapInterval(DrawablePtr pDrawable, int interval)
+{
+ ScreenPtr pScreen = pDrawable->pScreen;
+ DRI2DrawablePtr pPriv = DRI2GetDrawable(pDrawable);
+
+ if (pPriv == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: bad drawable\n", __func__);
+ return;
+ }
+
+ /* fixme: check against arbitrary max? */
+ pPriv->swap_interval = interval;
+}
+
+int
+DRI2GetMSC(DrawablePtr pDraw, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv;
+ Bool ret;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL) {
+ xf86DrvMsg(pScreen->myNum, X_ERROR,
+ "[DRI2] %s: bad drawable\n", __func__);
+ return BadDrawable;
+ }
+
+ if (!ds->GetMSC) {
+ *ust = 0;
+ *msc = 0;
+ *sbc = pPriv->swap_count;
+ return Success;
+ }
+
+ /*
+ * Spec needs to be updated to include unmapped or redirected
+ * drawables
+ */
+
+ ret = (*ds->GetMSC)(pDraw, ust, msc);
+ if (!ret)
+ return BadDrawable;
+
+ *sbc = pPriv->swap_count;
+
+ return Success;
+}
+
+int
+DRI2WaitMSC(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
+ CARD64 divisor, CARD64 remainder)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
+ DRI2DrawablePtr pPriv;
+ Bool ret;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return BadDrawable;
+
+ /* Old DDX just completes immediately */
+ if (!ds->ScheduleWaitMSC) {
+ DRI2WaitMSCComplete(client, pDraw, target_msc, 0, 0);
+
+ return Success;
+ }
+
+ ret = (*ds->ScheduleWaitMSC)(client, pDraw, target_msc, divisor, remainder);
+ if (!ret)
+ return BadDrawable;
+
+ return Success;
+}
+
+int
+DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw, CARD64 target_sbc)
+{
+ DRI2DrawablePtr pPriv;
+
+ pPriv = DRI2GetDrawable(pDraw);
+ if (pPriv == NULL)
+ return BadDrawable;
+
+ /* target_sbc == 0 means to block until all pending swaps are
+ * finished. Recalculate target_sbc to get that behaviour.
+ */
+ if (target_sbc == 0)
+ target_sbc = pPriv->swap_count + pPriv->swapsPending;
+
+ /* If current swap count already >= target_sbc, reply and
+ * return immediately with (ust, msc, sbc) triplet of
+ * most recent completed swap.
+ */
+ if (pPriv->swap_count >= target_sbc) {
+ ProcDRI2WaitMSCReply(client, pPriv->last_swap_ust,
+ pPriv->last_swap_msc, pPriv->swap_count);
+ return Success;
+ }
+
+ pPriv->target_sbc = target_sbc;
+ __DRI2BlockClient(client, pPriv);
+
+ return Success;
+}
+
+Bool
+DRI2HasSwapControl(ScreenPtr pScreen)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+ return ds->ScheduleSwap && ds->GetMSC;
+}
+
+Bool
+DRI2Connect(ScreenPtr pScreen, unsigned int driverType, int *fd,
+ const char **driverName, const char **deviceName)
+{
+ DRI2ScreenPtr ds;
+
+ if (!dixPrivateKeyRegistered(dri2ScreenPrivateKey))
+ return FALSE;
+
+ ds = DRI2GetScreen(pScreen);
+ if (ds == NULL || driverType >= ds->numDrivers ||
+ !ds->driverNames[driverType])
+ return FALSE;
+
+ *fd = ds->fd;
+ *driverName = ds->driverNames[driverType];
+ *deviceName = ds->deviceName;
+
+ return TRUE;
+}
+
+Bool
+DRI2Authenticate(ScreenPtr pScreen, uint32_t magic)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+ if (ds == NULL || (*ds->AuthMagic)(ds->fd, magic))
+ return FALSE;
+
+ return TRUE;
+}
+
+static int
+DRI2ConfigNotify(WindowPtr pWin, int x, int y, int w, int h, int bw,
+ WindowPtr pSib)
+{
+ DrawablePtr pDraw = (DrawablePtr)pWin;
+ ScreenPtr pScreen = pDraw->pScreen;
+ DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+ DRI2DrawablePtr dd = DRI2GetDrawable(pDraw);
+ int ret;
+
+ if (ds->ConfigNotify) {
+ pScreen->ConfigNotify = ds->ConfigNotify;
+
+ ret = (*pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
+
+ ds->ConfigNotify = pScreen->ConfigNotify;
+ pScreen->ConfigNotify = DRI2ConfigNotify;
+ if (ret)
+ return ret;
+ }
+
+ if (!dd || (dd->width == w && dd->height == h))
+ return Success;
+
+ DRI2InvalidateDrawable(pDraw);
+ return Success;
+}
+
+Bool
+DRI2ScreenInit(ScreenPtr pScreen, DRI2InfoPtr info)
+{
+ DRI2ScreenPtr ds;
+ const char* driverTypeNames[] = {
+ "DRI", /* DRI2DriverDRI */
+ "VDPAU", /* DRI2DriverVDPAU */
+ };
+ unsigned int i;
+ CARD8 cur_minor;
+
+ if (info->version < 3)
+ return FALSE;
+
+ if (!xf86VGAarbiterAllowDRI(pScreen)) {
+ xf86DrvMsg(pScreen->myNum, X_WARNING,
+ "[DRI2] Direct rendering is not supported when VGA arb is necessary for the device\n");
+ return FALSE;
+ }
+
+ if (!dixRegisterPrivateKey(&dri2ScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+ return FALSE;
+
+ if (!dixRegisterPrivateKey(&dri2WindowPrivateKeyRec, PRIVATE_WINDOW, 0))
+ return FALSE;
+
+ if (!dixRegisterPrivateKey(&dri2PixmapPrivateKeyRec, PRIVATE_PIXMAP, 0))
+ return FALSE;
+
+ ds = calloc(1, sizeof *ds);
+ if (!ds)
+ return FALSE;
+
+ ds->screen = pScreen;
+ ds->fd = info->fd;
+ ds->deviceName = info->deviceName;
+ dri2_major = 1;
+
+ ds->CreateBuffer = info->CreateBuffer;
+ ds->DestroyBuffer = info->DestroyBuffer;
+ ds->CopyRegion = info->CopyRegion;
+
+ if (info->version >= 4) {
+ ds->ScheduleSwap = info->ScheduleSwap;
+ ds->ScheduleWaitMSC = info->ScheduleWaitMSC;
+ ds->GetMSC = info->GetMSC;
+ cur_minor = 3;
+ } else {
+ cur_minor = 1;
+ }
+
+ if (info->version >= 5) {
+ ds->AuthMagic = info->AuthMagic;
+ }
+
+ /*
+ * if the driver doesn't provide an AuthMagic function or the info struct
+ * version is too low, it relies on the old method (using libdrm) or fail
+ */
+ if (!ds->AuthMagic)
+#ifdef WITH_LIBDRM
+ ds->AuthMagic = drmAuthMagic;
+#else
+ goto err_out;
+#endif
+
+ /* Initialize minor if needed and set to minimum provied by DDX */
+ if (!dri2_minor || dri2_minor > cur_minor)
+ dri2_minor = cur_minor;
+
+ if (info->version == 3 || info->numDrivers == 0) {
+ /* Driver too old: use the old-style driverName field */
+ ds->numDrivers = 1;
+ ds->driverNames = malloc(sizeof(*ds->driverNames));
+ if (!ds->driverNames)
+ goto err_out;
+ ds->driverNames[0] = info->driverName;
+ } else {
+ ds->numDrivers = info->numDrivers;
+ ds->driverNames = malloc(info->numDrivers * sizeof(*ds->driverNames));
+ if (!ds->driverNames)
+ goto err_out;
+ memcpy(ds->driverNames, info->driverNames,
+ info->numDrivers * sizeof(*ds->driverNames));
+ }
+
+ dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, ds);
+
+ ds->ConfigNotify = pScreen->ConfigNotify;
+ pScreen->ConfigNotify = DRI2ConfigNotify;
+
+ xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] Setup complete\n");
+ for (i = 0; i < sizeof(driverTypeNames) / sizeof(driverTypeNames[0]); i++) {
+ if (i < ds->numDrivers && ds->driverNames[i]) {
+ xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] %s driver: %s\n",
+ driverTypeNames[i], ds->driverNames[i]);
+ }
+ }
+
+ return TRUE;
+
+err_out:
+ xf86DrvMsg(pScreen->myNum, X_WARNING,
+ "[DRI2] Initialization failed for info version %d.\n", info->version);
+ free(ds);
+ return FALSE;
+}
+
+void
+DRI2CloseScreen(ScreenPtr pScreen)
+{
+ DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
+
+ free(ds->driverNames);
+ free(ds);
+ dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, NULL);
+}
+
+extern ExtensionModule dri2ExtensionModule;
+
+static pointer
+DRI2Setup(pointer module, pointer opts, int *errmaj, int *errmin)
+{
+ static Bool setupDone = FALSE;
+
+ dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone, "DRI2Drawable");
+
+ if (!setupDone)
+ {
+ setupDone = TRUE;
+ LoadExtension(&dri2ExtensionModule, FALSE);
+ }
+ else
+ {
+ if (errmaj)
+ *errmaj = LDR_ONCEONLY;
+ }
+
+ return (pointer) 1;
+}
+
+static XF86ModuleVersionInfo DRI2VersRec =
+{
+ "dri2",
+ MODULEVENDORSTRING,
+ MODINFOSTRING1,
+ MODINFOSTRING2,
+ XORG_VERSION_CURRENT,
+ 1, 2, 0,
+ ABI_CLASS_EXTENSION,
+ ABI_EXTENSION_VERSION,
+ MOD_CLASS_NONE,
+ { 0, 0, 0, 0 }
+};
+
+_X_EXPORT XF86ModuleData dri2ModuleData = { &DRI2VersRec, DRI2Setup, NULL };
+
+void
+DRI2Version(int *major, int *minor)
+{
+ if (major != NULL)
+ *major = DRI2VersRec.majorversion;
+
+ if (minor != NULL)
+ *minor = DRI2VersRec.minorversion;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 05:57:36 +0000