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xenocara/xserver/hw/xfree86/dri2/dri2.c
matthieu 3bbfe7b179 Update to xserver 1.15.1. 
Tested by at least ajacoutot@, dcoppa@ & jasper@
2014-05-02 19:27:46 +00:00

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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 "dri2int.h"
#include "xf86VGAarbiter.h"
#include "damage.h"
#include "xf86.h"
CARD8 dri2_major; /* version of DRI2 supported by DDX */
CARD8 dri2_minor;
uint32_t prime_id_allocate_bitmask;
static DevPrivateKeyRec dri2ScreenPrivateKeyRec;
#define dri2ScreenPrivateKey (&dri2ScreenPrivateKeyRec)
static DevPrivateKeyRec dri2WindowPrivateKeyRec;
#define dri2WindowPrivateKey (&dri2WindowPrivateKeyRec)
static DevPrivateKeyRec dri2PixmapPrivateKeyRec;
#define dri2PixmapPrivateKey (&dri2PixmapPrivateKeyRec)
static DevPrivateKeyRec dri2ClientPrivateKeyRec;
#define dri2ClientPrivateKey (&dri2ClientPrivateKeyRec)
#define dri2ClientPrivate(_pClient) (dixLookupPrivate(&(_pClient)->devPrivates, \
dri2ClientPrivateKey))
typedef struct _DRI2Client {
int prime_id;
} DRI2ClientRec, *DRI2ClientPtr;
static RESTYPE dri2DrawableRes;
typedef struct _DRI2Screen *DRI2ScreenPtr;
typedef struct _DRI2Drawable {
DRI2ScreenPtr dri2_screen;
DrawablePtr drawable;
struct xorg_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 */
Bool needInvalidate;
int prime_id;
PixmapPtr prime_slave_pixmap;
PixmapPtr redirectpixmap;
} DRI2DrawableRec, *DRI2DrawablePtr;
typedef struct _DRI2Screen {
ScreenPtr screen;
int refcnt;
unsigned int numDrivers;
const char **driverNames;
const char *deviceName;
int fd;
unsigned int lastSequence;
int prime_id;
DRI2CreateBufferProcPtr CreateBuffer;
DRI2DestroyBufferProcPtr DestroyBuffer;
DRI2CopyRegionProcPtr CopyRegion;
DRI2ScheduleSwapProcPtr ScheduleSwap;
DRI2GetMSCProcPtr GetMSC;
DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
DRI2AuthMagic2ProcPtr AuthMagic;
DRI2AuthMagicProcPtr LegacyAuthMagic;
DRI2ReuseBufferNotifyProcPtr ReuseBufferNotify;
DRI2SwapLimitValidateProcPtr SwapLimitValidate;
DRI2GetParamProcPtr GetParam;
HandleExposuresProcPtr HandleExposures;
ConfigNotifyProcPtr ConfigNotify;
DRI2CreateBuffer2ProcPtr CreateBuffer2;
DRI2DestroyBuffer2ProcPtr DestroyBuffer2;
DRI2CopyRegion2ProcPtr CopyRegion2;
} DRI2ScreenRec;
static void
destroy_buffer(DrawablePtr pDraw, DRI2BufferPtr buffer, int prime_id);
static DRI2ScreenPtr
DRI2GetScreen(ScreenPtr pScreen)
{
return dixLookupPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey);
}
static ScreenPtr
GetScreenPrime(ScreenPtr master, int prime_id)
{
ScreenPtr slave;
if (prime_id == 0 || xorg_list_is_empty(&master->offload_slave_list)) {
return master;
}
xorg_list_for_each_entry(slave, &master->offload_slave_list, offload_head) {
DRI2ScreenPtr ds;
ds = DRI2GetScreen(slave);
if (ds->prime_id == prime_id)
break;
}
if (!slave)
return master;
return slave;
}
static DRI2ScreenPtr
DRI2GetScreenPrime(ScreenPtr master, int prime_id)
{
ScreenPtr slave = GetScreenPrime(master, prime_id);
return DRI2GetScreen(slave);
}
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 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;
xorg_list_init(&pPriv->reference_list);
pPriv->needInvalidate = FALSE;
pPriv->redirectpixmap = NULL;
pPriv->prime_slave_pixmap = NULL;
if (pDraw->type == DRAWABLE_WINDOW) {
pWin = (WindowPtr) pDraw;
dixSetPrivate(&pWin->devPrivates, dri2WindowPrivateKey, pPriv);
}
else {
pPixmap = (PixmapPtr) pDraw;
dixSetPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey, pPriv);
}
return pPriv;
}
Bool
DRI2SwapLimit(DrawablePtr pDraw, int swap_limit)
{
DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
DRI2ScreenPtr ds;
if (!pPriv)
return FALSE;
ds = pPriv->dri2_screen;
if (!ds->SwapLimitValidate || !ds->SwapLimitValidate(pDraw, swap_limit))
return FALSE;
pPriv->swap_limit = swap_limit;
/* Check throttling */
if (pPriv->swapsPending >= pPriv->swap_limit)
return TRUE;
if (pPriv->target_sbc == -1 && !pPriv->blockedOnMsc) {
if (pPriv->blockedClient) {
AttendClient(pPriv->blockedClient);
pPriv->blockedClient = NULL;
}
}
return TRUE;
}
typedef struct DRI2DrawableRefRec {
XID id;
XID dri2_id;
DRI2InvalidateProcPtr invalidate;
void *priv;
struct xorg_list link;
} DRI2DrawableRefRec, *DRI2DrawableRefPtr;
static DRI2DrawableRefPtr
DRI2LookupDrawableRef(DRI2DrawablePtr pPriv, XID id)
{
DRI2DrawableRefPtr ref;
xorg_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;
xorg_list_add(&ref->link, &pPriv->reference_list);
return Success;
}
int
DRI2CreateDrawable2(ClientPtr client, DrawablePtr pDraw, XID id,
DRI2InvalidateProcPtr invalidate, void *priv,
XID *dri2_id_out)
{
DRI2DrawablePtr pPriv;
DRI2ClientPtr dri2_client = dri2ClientPrivate(client);
XID dri2_id;
int rc;
pPriv = DRI2GetDrawable(pDraw);
if (pPriv == NULL)
pPriv = DRI2AllocateDrawable(pDraw);
if (pPriv == NULL)
return BadAlloc;
pPriv->prime_id = dri2_client->prime_id;
dri2_id = FakeClientID(client->index);
rc = DRI2AddDrawableRef(pPriv, id, dri2_id, invalidate, priv);
if (rc != Success)
return rc;
if (dri2_id_out)
*dri2_id_out = dri2_id;
return Success;
}
int
DRI2CreateDrawable(ClientPtr client, DrawablePtr pDraw, XID id,
DRI2InvalidateProcPtr invalidate, void *priv)
{
return DRI2CreateDrawable2(client, pDraw, id, invalidate, priv, NULL);
}
static int
DRI2DrawableGone(pointer p, XID id)
{
DRI2DrawablePtr pPriv = p;
DRI2DrawableRefPtr ref, next;
WindowPtr pWin;
PixmapPtr pPixmap;
DrawablePtr pDraw;
int i;
xorg_list_for_each_entry_safe(ref, next, &pPriv->reference_list, link) {
if (ref->dri2_id == id) {
xorg_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) {
xorg_list_del(&ref->link);
FreeResourceByType(ref->dri2_id, dri2DrawableRes, TRUE);
free(ref);
}
}
if (!xorg_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->prime_slave_pixmap) {
(*pPriv->prime_slave_pixmap->master_pixmap->drawable.pScreen->DestroyPixmap)(pPriv->prime_slave_pixmap->master_pixmap);
(*pPriv->prime_slave_pixmap->drawable.pScreen->DestroyPixmap)(pPriv->prime_slave_pixmap);
}
if (pPriv->buffers != NULL) {
for (i = 0; i < pPriv->bufferCount; i++)
destroy_buffer(pDraw, pPriv->buffers[i], pPriv->prime_id);
free(pPriv->buffers);
}
if (pPriv->redirectpixmap) {
(*pDraw->pScreen->ReplaceScanoutPixmap)(pDraw, pPriv->redirectpixmap, FALSE);
(*pDraw->pScreen->DestroyPixmap)(pPriv->redirectpixmap);
}
free(pPriv);
return Success;
}
static DRI2BufferPtr
create_buffer(DrawablePtr pDraw,
unsigned int attachment, unsigned int format)
{
ScreenPtr primeScreen;
DRI2DrawablePtr pPriv;
DRI2ScreenPtr ds;
DRI2BufferPtr buffer;
pPriv = DRI2GetDrawable(pDraw);
primeScreen = GetScreenPrime(pDraw->pScreen, pPriv->prime_id);
ds = DRI2GetScreenPrime(pDraw->pScreen, pPriv->prime_id);
if (ds->CreateBuffer2)
buffer = (*ds->CreateBuffer2)(primeScreen, pDraw, attachment, format);
else
buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
return buffer;
}
static void
destroy_buffer(DrawablePtr pDraw, DRI2BufferPtr buffer, int prime_id)
{
ScreenPtr primeScreen;
DRI2ScreenPtr ds;
primeScreen = GetScreenPrime(pDraw->pScreen, prime_id);
ds = DRI2GetScreen(primeScreen);
if (ds->DestroyBuffer2)
(*ds->DestroyBuffer2)(primeScreen, pDraw, buffer);
else
(*ds->DestroyBuffer)(pDraw, buffer);
}
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)
|| attachment == DRI2BufferFrontLeft
|| !dimensions_match || (pPriv->buffers[old_buf]->format != format)) {
*buffer = create_buffer (pDraw, attachment, format);
return TRUE;
}
else {
*buffer = pPriv->buffers[old_buf];
if (ds->ReuseBufferNotify)
(*ds->ReuseBufferNotify) (pDraw, *buffer);
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)
{
int i;
if (pPriv->buffers != NULL) {
for (i = 0; i < pPriv->bufferCount; i++) {
if (pPriv->buffers[i] != NULL) {
destroy_buffer(pDraw, pPriv->buffers[i], pPriv->prime_id);
}
}
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)
{
DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
DRI2ScreenPtr ds;
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;
}
ds = DRI2GetScreen(pDraw->pScreen);
dimensions_match = (pDraw->width == pPriv->width)
&& (pDraw->height == pPriv->height);
buffers = calloc((count + 1), sizeof(buffers[0]));
if (!buffers)
goto err_out;
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);
}
pPriv->needInvalidate = TRUE;
return pPriv->buffers;
err_out:
*out_count = 0;
if (buffers) {
for (i = 0; i < count; i++) {
if (buffers[i] != NULL)
destroy_buffer(pDraw, buffers[i], 0);
}
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 || !pPriv->needInvalidate)
return;
pPriv->needInvalidate = FALSE;
xorg_list_for_each_entry(ref, &pPriv->reference_list, link)
ref->invalidate(pDraw, ref->priv, ref->id);
}
/*
* 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;
}
static inline PixmapPtr GetDrawablePixmap(DrawablePtr drawable)
{
if (drawable->type == DRAWABLE_PIXMAP)
return (PixmapPtr)drawable;
else {
struct _Window *pWin = (struct _Window *)drawable;
return drawable->pScreen->GetWindowPixmap(pWin);
}
}
/*
* A TraverseTree callback to invalidate all windows using the same
* pixmap
*/
static int
DRI2InvalidateWalk(WindowPtr pWin, pointer data)
{
if (pWin->drawable.pScreen->GetWindowPixmap(pWin) != data)
return WT_DONTWALKCHILDREN;
DRI2InvalidateDrawable(&pWin->drawable);
return WT_WALKCHILDREN;
}
static void
DRI2InvalidateDrawableAll(DrawablePtr pDraw)
{
if (pDraw->type == DRAWABLE_WINDOW) {
WindowPtr pWin = (WindowPtr) pDraw;
PixmapPtr pPixmap = pDraw->pScreen->GetWindowPixmap(pWin);
/*
* Find the top-most window using this pixmap
*/
while (pWin->parent &&
pDraw->pScreen->GetWindowPixmap(pWin->parent) == pPixmap)
pWin = pWin->parent;
/*
* Walk the sub-tree to invalidate all of the
* windows using the same pixmap
*/
TraverseTree(pWin, DRI2InvalidateWalk, pPixmap);
DRI2InvalidateDrawable(&pPixmap->drawable);
}
else
DRI2InvalidateDrawable(pDraw);
}
DrawablePtr DRI2UpdatePrime(DrawablePtr pDraw, DRI2BufferPtr pDest)
{
DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
PixmapPtr spix;
PixmapPtr mpix = GetDrawablePixmap(pDraw);
ScreenPtr master, slave;
Bool ret;
master = mpix->drawable.pScreen;
if (pDraw->type == DRAWABLE_WINDOW) {
WindowPtr pWin = (WindowPtr)pDraw;
PixmapPtr pPixmap = pDraw->pScreen->GetWindowPixmap(pWin);
if (pDraw->pScreen->GetScreenPixmap(pDraw->pScreen) == pPixmap) {
if (pPriv->redirectpixmap &&
pPriv->redirectpixmap->drawable.width == pDraw->width &&
pPriv->redirectpixmap->drawable.height == pDraw->height &&
pPriv->redirectpixmap->drawable.depth == pDraw->depth) {
mpix = pPriv->redirectpixmap;
} else {
if (master->ReplaceScanoutPixmap) {
mpix = (*master->CreatePixmap)(master, pDraw->width, pDraw->height,
pDraw->depth, CREATE_PIXMAP_USAGE_SHARED);
if (!mpix)
return NULL;
ret = (*master->ReplaceScanoutPixmap)(pDraw, mpix, TRUE);
if (ret == FALSE) {
(*master->DestroyPixmap)(mpix);
return NULL;
}
pPriv->redirectpixmap = mpix;
} else
return NULL;
}
} else if (pPriv->redirectpixmap) {
(*master->ReplaceScanoutPixmap)(pDraw, pPriv->redirectpixmap, FALSE);
(*master->DestroyPixmap)(pPriv->redirectpixmap);
pPriv->redirectpixmap = NULL;
}
}
slave = GetScreenPrime(pDraw->pScreen, pPriv->prime_id);
/* check if the pixmap is still fine */
if (pPriv->prime_slave_pixmap) {
if (pPriv->prime_slave_pixmap->master_pixmap == mpix)
return &pPriv->prime_slave_pixmap->drawable;
else {
(*pPriv->prime_slave_pixmap->master_pixmap->drawable.pScreen->DestroyPixmap)(pPriv->prime_slave_pixmap->master_pixmap);
(*slave->DestroyPixmap)(pPriv->prime_slave_pixmap);
pPriv->prime_slave_pixmap = NULL;
}
}
spix = PixmapShareToSlave(mpix, slave);
if (!spix)
return NULL;
pPriv->prime_slave_pixmap = spix;
#ifdef COMPOSITE
spix->screen_x = mpix->screen_x;
spix->screen_y = mpix->screen_y;
#endif
DRI2InvalidateDrawableAll(pDraw);
return &spix->drawable;
}
static void dri2_copy_region(DrawablePtr pDraw, RegionPtr pRegion,
DRI2BufferPtr pDest, DRI2BufferPtr pSrc)
{
DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
DRI2ScreenPtr ds;
ScreenPtr primeScreen;
primeScreen = GetScreenPrime(pDraw->pScreen, pPriv->prime_id);
ds = DRI2GetScreen(primeScreen);
if (ds->CopyRegion2)
(*ds->CopyRegion2)(primeScreen, pDraw, pRegion, pDest, pSrc);
else
(*ds->CopyRegion) (pDraw, pRegion, pDest, pSrc);
/* cause damage to the box */
if (pPriv->prime_id) {
BoxRec box;
RegionRec region;
box.x1 = 0;
box.x2 = box.x1 + pDraw->width;
box.y1 = 0;
box.y2 = box.y1 + pDraw->height;
RegionInit(&region, &box, 1);
RegionTranslate(&region, pDraw->x, pDraw->y);
DamageRegionAppend(pDraw, &region);
DamageRegionProcessPending(pDraw);
RegionUninit(&region);
}
}
int
DRI2CopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
unsigned int dest, unsigned int src)
{
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;
dri2_copy_region(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 && 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 || pPriv->prime_id) {
BoxRec box;
RegionRec region;
box.x1 = 0;
box.y1 = 0;
box.x2 = pDraw->width;
box.y2 = pDraw->height;
RegionInit(&region, &box, 0);
pPriv->swapsPending++;
dri2_copy_region(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;
DRI2InvalidateDrawableAll(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(ClientPtr client, ScreenPtr pScreen,
unsigned int driverType, int *fd,
const char **driverName, const char **deviceName)
{
DRI2ScreenPtr ds;
uint32_t prime_id = DRI2DriverPrimeId(driverType);
uint32_t driver_id = driverType & 0xffff;
if (!dixPrivateKeyRegistered(dri2ScreenPrivateKey))
return FALSE;
ds = DRI2GetScreenPrime(pScreen, prime_id);
if (ds == NULL)
return FALSE;
if (driver_id >= ds->numDrivers ||
!ds->driverNames[driver_id])
return FALSE;
*driverName = ds->driverNames[driver_id];
*deviceName = ds->deviceName;
*fd = ds->fd;
if (client) {
DRI2ClientPtr dri2_client;
dri2_client = dri2ClientPrivate(client);
dri2_client->prime_id = prime_id;
}
return TRUE;
}
static int
DRI2AuthMagic (ScreenPtr pScreen, uint32_t magic)
{
DRI2ScreenPtr ds = DRI2GetScreen(pScreen);
if (ds == NULL)
return -EINVAL;
return (*ds->LegacyAuthMagic) (ds->fd, magic);
}
Bool
DRI2Authenticate(ClientPtr client, ScreenPtr pScreen, uint32_t magic)
{
DRI2ScreenPtr ds;
DRI2ClientPtr dri2_client = dri2ClientPrivate(client);
ScreenPtr primescreen;
ds = DRI2GetScreenPrime(pScreen, dri2_client->prime_id);
if (ds == NULL)
return FALSE;
primescreen = GetScreenPrime(pScreen, dri2_client->prime_id);
if ((*ds->AuthMagic)(primescreen, 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;
}
#define MAX_PRIME DRI2DriverPrimeMask
static int
get_prime_id(void)
{
int i;
/* start at 1, prime id 0 is just normal driver */
for (i = 1; i < MAX_PRIME; i++) {
if (prime_id_allocate_bitmask & (1 << i))
continue;
prime_id_allocate_bitmask |= (1 << i);
return i;
}
return -1;
}
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;
if (!dixRegisterPrivateKey(&dri2ClientPrivateKeyRec, PRIVATE_CLIENT, sizeof(DRI2ClientRec)))
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 >= 8) {
ds->AuthMagic = info->AuthMagic2;
}
if (info->version >= 5) {
ds->LegacyAuthMagic = info->AuthMagic;
}
if (info->version >= 6) {
ds->ReuseBufferNotify = info->ReuseBufferNotify;
ds->SwapLimitValidate = info->SwapLimitValidate;
}
if (info->version >= 7) {
ds->GetParam = info->GetParam;
cur_minor = 4;
}
if (info->version >= 9) {
ds->CreateBuffer2 = info->CreateBuffer2;
if (info->CreateBuffer2 && pScreen->isGPU) {
ds->prime_id = get_prime_id();
if (ds->prime_id == -1) {
free(ds);
return FALSE;
}
}
ds->DestroyBuffer2 = info->DestroyBuffer2;
ds->CopyRegion2 = info->CopyRegion2;
}
/*
* if the driver doesn't provide an AuthMagic function or the info struct
* version is too low, call through LegacyAuthMagic
*/
if (!ds->AuthMagic) {
ds->AuthMagic = DRI2AuthMagic;
/*
* If the driver doesn't provide an AuthMagic function
* it relies on the old method (using libdrm) or fails
*/
if (!ds->LegacyAuthMagic)
#ifdef WITH_LIBDRM
ds->LegacyAuthMagic = 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);
pScreen->ConfigNotify = ds->ConfigNotify;
if (ds->prime_id)
prime_id_allocate_bitmask &= ~(1 << ds->prime_id);
free(ds->driverNames);
free(ds);
dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, NULL);
}
extern Bool DRI2ModuleSetup(void);
/* Called by InitExtensions() */
Bool
DRI2ModuleSetup(void)
{
dri2DrawableRes = CreateNewResourceType(DRI2DrawableGone, "DRI2Drawable");
if (!dri2DrawableRes)
return FALSE;
return TRUE;
}
void
DRI2Version(int *major, int *minor)
{
if (major != NULL)
*major = 1;
if (minor != NULL)
*minor = 2;
}
int
DRI2GetParam(ClientPtr client,
DrawablePtr drawable,
CARD64 param,
BOOL *is_param_recognized,
CARD64 *value)
{
DRI2ScreenPtr ds = DRI2GetScreen(drawable->pScreen);
char high_byte = (param >> 24);
switch (high_byte) {
case 0:
/* Parameter names whose high_byte is 0 are reserved for the X
* server. The server currently recognizes no parameters.
*/
goto not_recognized;
case 1:
/* Parameter names whose high byte is 1 are reserved for the DDX. */
if (ds->GetParam)
return ds->GetParam(client, drawable, param,
is_param_recognized, value);
else
goto not_recognized;
default:
/* Other parameter names are reserved for future use. They are never
* recognized.
*/
goto not_recognized;
}
not_recognized:
*is_param_recognized = FALSE;
return Success;
}
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