/*
* Copyright © 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)
*/
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include "glapi.h"
#include "glxclient.h"
#include <X11/extensions/dri2proto.h>
#include "xf86dri.h"
#include <dlfcn.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/time.h>
#include "xf86drm.h"
#include "dri2.h"
#include "dri_common.h"
/* From xmlpool/options.h, user exposed so should be stable */
#define DRI_CONF_VBLANK_NEVER 0
#define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
#undef DRI2_MINOR
#define DRI2_MINOR 1
struct dri2_display
{
__GLXDRIdisplay base;
/*
** XFree86-DRI version information
*/
int driMajor;
int driMinor;
int driPatch;
int swapAvailable;
int invalidateAvailable;
__glxHashTable *dri2Hash;
const __DRIextension *loader_extensions[4];
};
struct dri2_screen {
struct glx_screen base;
__DRIscreen *driScreen;
__GLXDRIscreen vtable;
const __DRIdri2Extension *dri2;
const __DRIcoreExtension *core;
const __DRI2flushExtension *f;
const __DRI2configQueryExtension *config;
const __DRItexBufferExtension *texBuffer;
const __DRI2throttleExtension *throttle;
const __DRIconfig **driver_configs;
void *driver;
int fd;
Bool show_fps;
};
struct dri2_context
{
struct glx_context base;
__DRIcontext *driContext;
};
struct dri2_drawable
{
__GLXDRIdrawable base;
__DRIdrawable *driDrawable;
__DRIbuffer buffers[5];
int bufferCount;
int width, height;
int have_back;
int have_fake_front;
int swap_interval;
double previous_time;
unsigned frames;
};
static const struct glx_context_vtable dri2_context_vtable;
static void
dri2_destroy_context(struct glx_context *context)
{
struct dri2_context *pcp = (struct dri2_context *) context;
struct dri2_screen *psc = (struct dri2_screen *) context->psc;
driReleaseDrawables(&pcp->base);
if (context->extensions)
XFree((char *) context->extensions);
(*psc->core->destroyContext) (pcp->driContext);
Xfree(pcp);
}
static Bool
dri2_bind_context(struct glx_context *context, struct glx_context *old,
GLXDrawable draw, GLXDrawable read)
{
struct dri2_context *pcp = (struct dri2_context *) context;
struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
struct dri2_drawable *pdraw, *pread;
struct dri2_display *pdp;
pdraw = (struct dri2_drawable *) driFetchDrawable(context, draw);
pread = (struct dri2_drawable *) driFetchDrawable(context, read);
driReleaseDrawables(&pcp->base);
if (pdraw == NULL || pread == NULL)
return GLXBadDrawable;
if (!(*psc->core->bindContext) (pcp->driContext,
pdraw->driDrawable, pread->driDrawable))
return GLXBadContext;
/* If the server doesn't send invalidate events, we may miss a
* resize before the rendering starts. Invalidate the buffers now
* so the driver will recheck before rendering starts. */
pdp = (struct dri2_display *) psc->base.display;
if (!pdp->invalidateAvailable) {
dri2InvalidateBuffers(psc->base.dpy, pdraw->base.xDrawable);
if (pread != pdraw)
dri2InvalidateBuffers(psc->base.dpy, pread->base.xDrawable);
}
return Success;
}
static void
dri2_unbind_context(struct glx_context *context, struct glx_context *new)
{
struct dri2_context *pcp = (struct dri2_context *) context;
struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
(*psc->core->unbindContext) (pcp->driContext);
}
static struct glx_context *
dri2_create_context(struct glx_screen *base,
struct glx_config *config_base,
struct glx_context *shareList, int renderType)
{
struct dri2_context *pcp, *pcp_shared;
struct dri2_screen *psc = (struct dri2_screen *) base;
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
__DRIcontext *shared = NULL;
if (shareList) {
/* If the shareList context is not a DRI2 context, we cannot possibly
* create a DRI2 context that shares it.
*/
if (shareList->vtable->destroy != dri2_destroy_context) {
return NULL;
}
pcp_shared = (struct dri2_context *) shareList;
shared = pcp_shared->driContext;
}
pcp = Xmalloc(sizeof *pcp);
if (pcp == NULL)
return NULL;
memset(pcp, 0, sizeof *pcp);
if (!glx_context_init(&pcp->base, &psc->base, &config->base)) {
Xfree(pcp);
return NULL;
}
pcp->driContext =
(*psc->dri2->createNewContext) (psc->driScreen,
config->driConfig, shared, pcp);
if (pcp->driContext == NULL) {
Xfree(pcp);
return NULL;
}
pcp->base.vtable = &dri2_context_vtable;
return &pcp->base;
}
static struct glx_context *
dri2_create_context_attribs(struct glx_screen *base,
struct glx_config *config_base,
struct glx_context *shareList,
unsigned num_attribs,
const uint32_t *attribs,
unsigned *error)
{
struct dri2_context *pcp = NULL;
struct dri2_context *pcp_shared = NULL;
struct dri2_screen *psc = (struct dri2_screen *) base;
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
__DRIcontext *shared = NULL;
uint32_t minor_ver = 1;
uint32_t major_ver = 2;
uint32_t flags = 0;
unsigned api;
int reset = __DRI_CTX_RESET_NO_NOTIFICATION;
uint32_t ctx_attribs[2 * 5];
unsigned num_ctx_attribs = 0;
if (psc->dri2->base.version < 3) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
goto error_exit;
}
/* Remap the GLX tokens to DRI2 tokens.
*/
if (!dri2_convert_glx_attribs(num_attribs, attribs,
&major_ver, &minor_ver, &flags, &api, &reset,
error))
goto error_exit;
if (shareList) {
pcp_shared = (struct dri2_context *) shareList;
shared = pcp_shared->driContext;
}
pcp = Xmalloc(sizeof *pcp);
if (pcp == NULL) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
goto error_exit;
}
memset(pcp, 0, sizeof *pcp);
if (!glx_context_init(&pcp->base, &psc->base, &config->base))
goto error_exit;
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
ctx_attribs[num_ctx_attribs++] = major_ver;
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
ctx_attribs[num_ctx_attribs++] = minor_ver;
/* Only send a value when the non-default value is requested. By doing
* this we don't have to check the driver's DRI2 version before sending the
* default value.
*/
if (reset != __DRI_CTX_RESET_NO_NOTIFICATION) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
ctx_attribs[num_ctx_attribs++] = reset;
}
if (flags != 0) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
/* The current __DRI_CTX_FLAG_* values are identical to the
* GLX_CONTEXT_*_BIT values.
*/
ctx_attribs[num_ctx_attribs++] = flags;
}
pcp->driContext =
(*psc->dri2->createContextAttribs) (psc->driScreen,
api,
config->driConfig,
shared,
num_ctx_attribs / 2,
ctx_attribs,
error,
pcp);
if (pcp->driContext == NULL)
goto error_exit;
pcp->base.vtable = &dri2_context_vtable;
return &pcp->base;
error_exit:
if (pcp != NULL)
Xfree(pcp);
return NULL;
}
static void
dri2DestroyDrawable(__GLXDRIdrawable *base)
{
struct dri2_screen *psc = (struct dri2_screen *) base->psc;
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct glx_display *dpyPriv = psc->base.display;
struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
__glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
(*psc->core->destroyDrawable) (pdraw->driDrawable);
/* If it's a GLX 1.3 drawables, we can destroy the DRI2 drawable
* now, as the application explicitly asked to destroy the GLX
* drawable. Otherwise, for legacy drawables, we let the DRI2
* drawable linger on the server, since there's no good way of
* knowing when the application is done with it. The server will
* destroy the DRI2 drawable when it destroys the X drawable or the
* client exits anyway. */
if (pdraw->base.xDrawable != pdraw->base.drawable)
DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
Xfree(pdraw);
}
static __GLXDRIdrawable *
dri2CreateDrawable(struct glx_screen *base, XID xDrawable,
GLXDrawable drawable, struct glx_config *config_base)
{
struct dri2_drawable *pdraw;
struct dri2_screen *psc = (struct dri2_screen *) base;
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
struct glx_display *dpyPriv;
struct dri2_display *pdp;
GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
pdraw = Xmalloc(sizeof(*pdraw));
if (!pdraw)
return NULL;
memset(pdraw, 0, sizeof *pdraw);
pdraw->base.destroyDrawable = dri2DestroyDrawable;
pdraw->base.xDrawable = xDrawable;
pdraw->base.drawable = drawable;
pdraw->base.psc = &psc->base;
pdraw->bufferCount = 0;
pdraw->swap_interval = 1; /* default may be overridden below */
pdraw->have_back = 0;
if (psc->config)
psc->config->configQueryi(psc->driScreen,
"vblank_mode", &vblank_mode);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
case DRI_CONF_VBLANK_DEF_INTERVAL_0:
pdraw->swap_interval = 0;
break;
case DRI_CONF_VBLANK_DEF_INTERVAL_1:
case DRI_CONF_VBLANK_ALWAYS_SYNC:
default:
pdraw->swap_interval = 1;
break;
}
DRI2CreateDrawable(psc->base.dpy, xDrawable);
dpyPriv = __glXInitialize(psc->base.dpy);
pdp = (struct dri2_display *)dpyPriv->dri2Display;;
/* Create a new drawable */
pdraw->driDrawable =
(*psc->dri2->createNewDrawable) (psc->driScreen,
config->driConfig, pdraw);
if (!pdraw->driDrawable) {
DRI2DestroyDrawable(psc->base.dpy, xDrawable);
Xfree(pdraw);
return NULL;
}
if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
(*psc->core->destroyDrawable) (pdraw->driDrawable);
DRI2DestroyDrawable(psc->base.dpy, xDrawable);
Xfree(pdraw);
return None;
}
#ifdef X_DRI2SwapInterval
/*
* Make sure server has the same swap interval we do for the new
* drawable.
*/
if (pdp->swapAvailable)
DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
#endif
return &pdraw->base;
}
#ifdef X_DRI2GetMSC
static int
dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
int64_t *ust, int64_t *msc, int64_t *sbc)
{
CARD64 dri2_ust, dri2_msc, dri2_sbc;
int ret;
ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
&dri2_ust, &dri2_msc, &dri2_sbc);
*ust = dri2_ust;
*msc = dri2_msc;
*sbc = dri2_sbc;
return ret;
}
#endif
#ifdef X_DRI2WaitMSC
static int
dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
{
CARD64 dri2_ust, dri2_msc, dri2_sbc;
int ret;
ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
*ust = dri2_ust;
*msc = dri2_msc;
*sbc = dri2_sbc;
return ret;
}
static int
dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
int64_t *msc, int64_t *sbc)
{
CARD64 dri2_ust, dri2_msc, dri2_sbc;
int ret;
ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
*ust = dri2_ust;
*msc = dri2_msc;
*sbc = dri2_sbc;
return ret;
}
#endif /* X_DRI2WaitMSC */
/**
* dri2Throttle - Request driver throttling
*
* This function uses the DRI2 throttle extension to give the
* driver the opportunity to throttle on flush front, copysubbuffer
* and swapbuffers.
*/
static void
dri2Throttle(struct dri2_screen *psc,
struct dri2_drawable *draw,
enum __DRI2throttleReason reason)
{
if (psc->throttle) {
struct glx_context *gc = __glXGetCurrentContext();
struct dri2_context *dri2Ctx = (struct dri2_context *)gc;
__DRIcontext *ctx =
(dri2Ctx) ? dri2Ctx->driContext : NULL;
psc->throttle->throttle(ctx, draw->driDrawable, reason);
}
}
static void
__dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
int width, int height,
enum __DRI2throttleReason reason)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
XRectangle xrect;
XserverRegion region;
/* Check we have the right attachments */
if (!priv->have_back)
return;
xrect.x = x;
xrect.y = priv->height - y - height;
xrect.width = width;
xrect.height = height;
#ifdef __DRI2_FLUSH
if (psc->f)
(*psc->f->flush) (priv->driDrawable);
#endif
dri2Throttle(psc, priv, reason);
region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFrontLeft, DRI2BufferBackLeft);
/* Refresh the fake front (if present) after we just damaged the real
* front.
*/
if (priv->have_fake_front)
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
XFixesDestroyRegion(psc->base.dpy, region);
}
static void
dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
int width, int height)
{
__dri2CopySubBuffer(pdraw, x, y, width, height,
__DRI2_THROTTLE_COPYSUBBUFFER);
}
static void
dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
{
XRectangle xrect;
XserverRegion region;
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
xrect.x = 0;
xrect.y = 0;
xrect.width = priv->width;
xrect.height = priv->height;
#ifdef __DRI2_FLUSH
if (psc->f)
(*psc->f->flush) (priv->driDrawable);
#endif
region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
XFixesDestroyRegion(psc->base.dpy, region);
}
static void
dri2_wait_x(struct glx_context *gc)
{
struct dri2_drawable *priv = (struct dri2_drawable *)
GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
if (priv == NULL || !priv->have_fake_front)
return;
dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
}
static void
dri2_wait_gl(struct glx_context *gc)
{
struct dri2_drawable *priv = (struct dri2_drawable *)
GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
if (priv == NULL || !priv->have_fake_front)
return;
dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
}
static void
dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
{
struct glx_display *priv;
struct dri2_display *pdp;
struct glx_context *gc;
struct dri2_drawable *pdraw = loaderPrivate;
struct dri2_screen *psc;
if (!pdraw)
return;
if (!pdraw->base.psc)
return;
psc = (struct dri2_screen *) pdraw->base.psc;
priv = __glXInitialize(psc->base.dpy);
pdp = (struct dri2_display *) priv->dri2Display;
gc = __glXGetCurrentContext();
dri2Throttle(psc, pdraw, __DRI2_THROTTLE_FLUSHFRONT);
/* Old servers don't send invalidate events */
if (!pdp->invalidateAvailable)
dri2InvalidateBuffers(priv->dpy, pdraw->base.xDrawable);
dri2_wait_gl(gc);
}
static void
dri2DestroyScreen(struct glx_screen *base)
{
struct dri2_screen *psc = (struct dri2_screen *) base;
/* Free the direct rendering per screen data */
(*psc->core->destroyScreen) (psc->driScreen);
driDestroyConfigs(psc->driver_configs);
close(psc->fd);
Xfree(psc);
}
/**
* Process list of buffer received from the server
*
* Processes the list of buffers received in a reply from the server to either
* \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
*/
static void
process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
unsigned count)
{
int i;
pdraw->bufferCount = count;
pdraw->have_fake_front = 0;
pdraw->have_back = 0;
/* This assumes the DRI2 buffer attachment tokens matches the
* __DRIbuffer tokens. */
for (i = 0; i < count; i++) {
pdraw->buffers[i].attachment = buffers[i].attachment;
pdraw->buffers[i].name = buffers[i].name;
pdraw->buffers[i].pitch = buffers[i].pitch;
pdraw->buffers[i].cpp = buffers[i].cpp;
pdraw->buffers[i].flags = buffers[i].flags;
if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
pdraw->have_fake_front = 1;
if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
pdraw->have_back = 1;
}
}
unsigned dri2GetSwapEventType(Display* dpy, XID drawable)
{
struct glx_display *glx_dpy = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw;
pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
if (!pdraw || !(pdraw->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK))
return 0;
return glx_dpy->codes->first_event + GLX_BufferSwapComplete;
}
static void show_fps(struct dri2_drawable *draw)
{
struct timeval tv;
double current_time;
gettimeofday(&tv, 0);
current_time = (double)tv.tv_sec + (double)tv.tv_usec * 0.000001;
draw->frames++;
if (draw->previous_time + 1 < current_time) {
if (draw->previous_time) {
fprintf(stderr, "libGL: FPS = %.1f\n",
draw->frames / (current_time - draw->previous_time));
}
draw->frames = 0;
draw->previous_time = current_time;
}
}
static int64_t
dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
int64_t remainder)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
struct glx_display *dpyPriv = __glXInitialize(priv->base.psc->dpy);
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
struct dri2_display *pdp =
(struct dri2_display *)dpyPriv->dri2Display;
CARD64 ret = 0;
/* Check we have the right attachments */
if (!priv->have_back)
return ret;
/* Old servers can't handle swapbuffers */
if (!pdp->swapAvailable) {
__dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height,
__DRI2_THROTTLE_SWAPBUFFER);
} else {
#ifdef X_DRI2SwapBuffers
#ifdef __DRI2_FLUSH
if (psc->f) {
struct glx_context *gc = __glXGetCurrentContext();
if (gc) {
(*psc->f->flush)(priv->driDrawable);
}
}
#endif
dri2Throttle(psc, priv, __DRI2_THROTTLE_SWAPBUFFER);
DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable,
target_msc, divisor, remainder, &ret);
#endif
}
if (psc->show_fps) {
show_fps(priv);
}
/* Old servers don't send invalidate events */
if (!pdp->invalidateAvailable)
dri2InvalidateBuffers(dpyPriv->dpy, pdraw->xDrawable);
return ret;
}
static __DRIbuffer *
dri2GetBuffers(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *loaderPrivate)
{
struct dri2_drawable *pdraw = loaderPrivate;
DRI2Buffer *buffers;
buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
width, height, attachments, count, out_count);
if (buffers == NULL)
return NULL;
pdraw->width = *width;
pdraw->height = *height;
process_buffers(pdraw, buffers, *out_count);
Xfree(buffers);
return pdraw->buffers;
}
static __DRIbuffer *
dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *loaderPrivate)
{
struct dri2_drawable *pdraw = loaderPrivate;
DRI2Buffer *buffers;
buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
pdraw->base.xDrawable,
width, height, attachments,
count, out_count);
if (buffers == NULL)
return NULL;
pdraw->width = *width;
pdraw->height = *height;
process_buffers(pdraw, buffers, *out_count);
Xfree(buffers);
return pdraw->buffers;
}
#ifdef X_DRI2SwapInterval
static int
dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
if (psc->config)
psc->config->configQueryi(psc->driScreen,
"vblank_mode", &vblank_mode);
switch (vblank_mode) {
case DRI_CONF_VBLANK_NEVER:
return GLX_BAD_VALUE;
case DRI_CONF_VBLANK_ALWAYS_SYNC:
if (interval <= 0)
return GLX_BAD_VALUE;
break;
default:
break;
}
DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
priv->swap_interval = interval;
return 0;
}
static int
dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
return priv->swap_interval;
}
#endif /* X_DRI2SwapInterval */
static const __DRIdri2LoaderExtension dri2LoaderExtension = {
{__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
dri2GetBuffers,
dri2FlushFrontBuffer,
dri2GetBuffersWithFormat,
};
static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
{__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
dri2GetBuffers,
dri2FlushFrontBuffer,
NULL,
};
#ifdef __DRI_USE_INVALIDATE
static const __DRIuseInvalidateExtension dri2UseInvalidate = {
{ __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
};
#endif
_X_HIDDEN void
dri2InvalidateBuffers(Display *dpy, XID drawable)
{
__GLXDRIdrawable *pdraw =
dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
struct dri2_screen *psc;
struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
if (!pdraw)
return;
psc = (struct dri2_screen *) pdraw->psc;
#if __DRI2_FLUSH_VERSION >= 3
if (pdraw && psc->f && psc->f->base.version >= 3 && psc->f->invalidate)
psc->f->invalidate(pdp->driDrawable);
#endif
}
static void
dri2_bind_tex_image(Display * dpy,
GLXDrawable drawable,
int buffer, const int *attrib_list)
{
struct glx_context *gc = __glXGetCurrentContext();
struct dri2_context *pcp = (struct dri2_context *) gc;
__GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
struct glx_display *dpyPriv = __glXInitialize(dpy);
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct dri2_display *pdp =
(struct dri2_display *) dpyPriv->dri2Display;
struct dri2_screen *psc;
if (pdraw != NULL) {
psc = (struct dri2_screen *) base->psc;
#if __DRI2_FLUSH_VERSION >= 3
if (!pdp->invalidateAvailable && psc->f &&
psc->f->base.version >= 3 && psc->f->invalidate)
psc->f->invalidate(pdraw->driDrawable);
#endif
if (psc->texBuffer->base.version >= 2 &&
psc->texBuffer->setTexBuffer2 != NULL) {
(*psc->texBuffer->setTexBuffer2) (pcp->driContext,
pdraw->base.textureTarget,
pdraw->base.textureFormat,
pdraw->driDrawable);
}
else {
(*psc->texBuffer->setTexBuffer) (pcp->driContext,
pdraw->base.textureTarget,
pdraw->driDrawable);
}
}
}
static void
dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
{
#if __DRI_TEX_BUFFER_VERSION >= 3
struct glx_context *gc = __glXGetCurrentContext();
struct dri2_context *pcp = (struct dri2_context *) gc;
__GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
struct glx_display *dpyPriv = __glXInitialize(dpy);
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct dri2_display *pdp =
(struct dri2_display *) dpyPriv->dri2Display;
struct dri2_screen *psc;
if (pdraw != NULL) {
psc = (struct dri2_screen *) base->psc;
if (psc->texBuffer->base.version >= 3 &&
psc->texBuffer->releaseTexBuffer != NULL) {
(*psc->texBuffer->releaseTexBuffer) (pcp->driContext,
pdraw->base.textureTarget,
pdraw->driDrawable);
}
}
#endif
}
static const struct glx_context_vtable dri2_context_vtable = {
dri2_destroy_context,
dri2_bind_context,
dri2_unbind_context,
dri2_wait_gl,
dri2_wait_x,
DRI_glXUseXFont,
dri2_bind_tex_image,
dri2_release_tex_image,
NULL, /* get_proc_address */
};
static void
dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions,
const char *driverName)
{
int i;
__glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
__glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
__glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
__glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
/*
* GLX_INTEL_swap_event is broken on the server side, where it's
* currently unconditionally enabled. This completely breaks
* systems running on drivers which don't support that extension.
* There's no way to test for its presence on this side, so instead
* of disabling it uncondtionally, just disable it for drivers
* which are known to not support it.
*/
if (strcmp(driverName, "vmwgfx") != 0) {
__glXEnableDirectExtension(&psc->base, "GLX_INTEL_swap_event");
}
if (psc->dri2->base.version >= 3) {
const unsigned mask = psc->dri2->getAPIMask(psc->driScreen);
__glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context");
__glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile");
if ((mask & (1 << __DRI_API_GLES2)) != 0)
__glXEnableDirectExtension(&psc->base,
"GLX_EXT_create_context_es2_profile");
}
for (i = 0; extensions[i]; i++) {
if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
__glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
}
if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
psc->f = (__DRI2flushExtension *) extensions[i];
/* internal driver extension, no GL extension exposed */
}
if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
psc->config = (__DRI2configQueryExtension *) extensions[i];
if (((strcmp(extensions[i]->name, __DRI2_THROTTLE) == 0)))
psc->throttle = (__DRI2throttleExtension *) extensions[i];
/* DRI2 version 3 is also required because
* GLX_ARB_create_context_robustness requires GLX_ARB_create_context.
*/
if (psc->dri2->base.version >= 3
&& strcmp(extensions[i]->name, __DRI2_ROBUSTNESS) == 0)
__glXEnableDirectExtension(&psc->base,
"GLX_ARB_create_context_robustness");
}
}
static const struct glx_screen_vtable dri2_screen_vtable = {
dri2_create_context,
dri2_create_context_attribs
};
static struct glx_screen *
dri2CreateScreen(int screen, struct glx_display * priv)
{
const __DRIconfig **driver_configs;
const __DRIextension **extensions;
const struct dri2_display *const pdp = (struct dri2_display *)
priv->dri2Display;
struct dri2_screen *psc;
__GLXDRIscreen *psp;
struct glx_config *configs = NULL, *visuals = NULL;
char *driverName, *deviceName, *tmp;
drm_magic_t magic;
int i;
psc = Xmalloc(sizeof *psc);
if (psc == NULL)
return NULL;
memset(psc, 0, sizeof *psc);
psc->fd = -1;
if (!glx_screen_init(&psc->base, screen, priv)) {
Xfree(psc);
return NULL;
}
if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
&driverName, &deviceName)) {
glx_screen_cleanup(&psc->base);
XFree(psc);
InfoMessageF("screen %d does not appear to be DRI2 capable\n", screen);
return NULL;
}
psc->driver = driOpenDriver(driverName);
if (psc->driver == NULL) {
ErrorMessageF("driver pointer missing\n");
goto handle_error;
}
extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
goto handle_error;
}
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
psc->core = (__DRIcoreExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
psc->dri2 = (__DRIdri2Extension *) extensions[i];
}
if (psc->core == NULL || psc->dri2 == NULL) {
ErrorMessageF("core dri or dri2 extension not found\n");
goto handle_error;
}
#ifdef O_CLOEXEC
psc->fd = open(deviceName, O_RDWR | O_CLOEXEC);
if (psc->fd == -1 && errno == EINVAL)
#endif
{
psc->fd = open(deviceName, O_RDWR);
if (psc->fd != -1)
fcntl(psc->fd, F_SETFD, fcntl(psc->fd, F_GETFD) | FD_CLOEXEC);
}
if (psc->fd < 0) {
ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
goto handle_error;
}
if (drmGetMagic(psc->fd, &magic)) {
ErrorMessageF("failed to get magic\n");
goto handle_error;
}
if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
ErrorMessageF("failed to authenticate magic %d\n", magic);
goto handle_error;
}
/* If the server does not support the protocol for
* DRI2GetBuffersWithFormat, don't supply that interface to the driver.
*/
psc->driScreen =
psc->dri2->createNewScreen(screen, psc->fd,
(const __DRIextension **)
&pdp->loader_extensions[0],
&driver_configs, psc);
if (psc->driScreen == NULL) {
ErrorMessageF("failed to create dri screen\n");
goto handle_error;
}
extensions = psc->core->getExtensions(psc->driScreen);
dri2BindExtensions(psc, extensions, driverName);
configs = driConvertConfigs(psc->core, psc->base.configs, driver_configs);
visuals = driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
if (!configs || !visuals)
goto handle_error;
glx_config_destroy_list(psc->base.configs);
psc->base.configs = configs;
glx_config_destroy_list(psc->base.visuals);
psc->base.visuals = visuals;
psc->driver_configs = driver_configs;
psc->base.vtable = &dri2_screen_vtable;
psp = &psc->vtable;
psc->base.driScreen = psp;
psp->destroyScreen = dri2DestroyScreen;
psp->createDrawable = dri2CreateDrawable;
psp->swapBuffers = dri2SwapBuffers;
psp->getDrawableMSC = NULL;
psp->waitForMSC = NULL;
psp->waitForSBC = NULL;
psp->setSwapInterval = NULL;
psp->getSwapInterval = NULL;
if (pdp->driMinor >= 2) {
#ifdef X_DRI2GetMSC
psp->getDrawableMSC = dri2DrawableGetMSC;
#endif
#ifdef X_DRI2WaitMSC
psp->waitForMSC = dri2WaitForMSC;
psp->waitForSBC = dri2WaitForSBC;
#endif
#ifdef X_DRI2SwapInterval
psp->setSwapInterval = dri2SetSwapInterval;
psp->getSwapInterval = dri2GetSwapInterval;
#endif
#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
__glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
#endif
}
/* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
* available.*/
psp->copySubBuffer = dri2CopySubBuffer;
__glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
Xfree(driverName);
Xfree(deviceName);
tmp = getenv("LIBGL_SHOW_FPS");
psc->show_fps = tmp && strcmp(tmp, "1") == 0;
return &psc->base;
handle_error:
CriticalErrorMessageF("failed to load driver: %s\n", driverName);
if (configs)
glx_config_destroy_list(configs);
if (visuals)
glx_config_destroy_list(visuals);
if (psc->driScreen)
psc->core->destroyScreen(psc->driScreen);
psc->driScreen = NULL;
if (psc->fd >= 0)
close(psc->fd);
if (psc->driver)
dlclose(psc->driver);
Xfree(driverName);
Xfree(deviceName);
glx_screen_cleanup(&psc->base);
XFree(psc);
return NULL;
}
/* Called from __glXFreeDisplayPrivate.
*/
static void
dri2DestroyDisplay(__GLXDRIdisplay * dpy)
{
struct dri2_display *pdp = (struct dri2_display *) dpy;
__glxHashDestroy(pdp->dri2Hash);
Xfree(dpy);
}
_X_HIDDEN __GLXDRIdrawable *
dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
{
struct glx_display *d = __glXInitialize(dpy);
struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
__GLXDRIdrawable *pdraw;
if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
return pdraw;
return NULL;
}
/*
* Allocate, initialize and return a __DRIdisplayPrivate object.
* This is called from __glXInitialize() when we are given a new
* display pointer.
*/
_X_HIDDEN __GLXDRIdisplay *
dri2CreateDisplay(Display * dpy)
{
struct dri2_display *pdp;
int eventBase, errorBase, i;
if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
return NULL;
pdp = Xmalloc(sizeof *pdp);
if (pdp == NULL)
return NULL;
if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
Xfree(pdp);
return NULL;
}
pdp->driPatch = 0;
pdp->swapAvailable = (pdp->driMinor >= 2);
pdp->invalidateAvailable = (pdp->driMinor >= 3);
pdp->base.destroyDisplay = dri2DestroyDisplay;
pdp->base.createScreen = dri2CreateScreen;
i = 0;
if (pdp->driMinor < 1)
pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
else
pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
pdp->loader_extensions[i++] = &systemTimeExtension.base;
#ifdef __DRI_USE_INVALIDATE
pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
#endif
pdp->loader_extensions[i++] = NULL;
pdp->dri2Hash = __glxHashCreate();
if (pdp->dri2Hash == NULL) {
Xfree(pdp);
return NULL;
}
return &pdp->base;
}
#endif /* GLX_DIRECT_RENDERING */