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xserver/hw/xfree86/dri2/dri2.c

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/*
* 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 = malloc((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;
}
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