/* * 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) || defined(GLX_USE_APPLE)) #include #include #include #include #include #include "glxclient.h" #include #include #include #include #include #include #include #include "dri2.h" #include "dri_common.h" #include "dri2_priv.h" #include "loader.h" #include "loader_dri_helper.h" #include "dri_util.h" #undef DRI2_MINOR #define DRI2_MINOR 1 struct dri2_drawable { __GLXDRIdrawable base; __DRIbuffer buffers[5]; int bufferCount; int width, height; int have_back; int have_fake_front; int swap_interval; uint64_t previous_time; unsigned frames; }; static const struct glx_context_vtable dri2_context_vtable; /* For XCB's handling of ust/msc/sbc counters, we have to hand it the high and * low halves separately. This helps you split them. */ static void split_counter(uint64_t counter, uint32_t *hi, uint32_t *lo) { *hi = (counter >> 32); *lo = counter & 0xffffffff; } static uint64_t merge_counter(uint32_t hi, uint32_t lo) { return ((uint64_t)hi << 32) | lo; } static void dri2DestroyDrawable(__GLXDRIdrawable *base) { struct dri2_screen *psc = (struct dri2_screen *) base->psc; struct glx_display *dpyPriv = psc->base.display; __glxHashDelete(dpyPriv->dri2Hash, base->xDrawable); driDestroyDrawable(base->dri_drawable); /* 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 (base->xDrawable != base->drawable) DRI2DestroyDrawable(psc->base.dpy, base->xDrawable); free(base); } static __GLXDRIdrawable * dri2CreateDrawable(struct glx_screen *base, XID xDrawable, GLXDrawable drawable, int type, 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; dpyPriv = __glXInitialize(psc->base.dpy); if (dpyPriv == NULL) return NULL; pdraw = calloc(1, sizeof(*pdraw)); if (!pdraw) return NULL; pdraw->base.destroyDrawable = dri2DestroyDrawable; pdraw->base.xDrawable = xDrawable; pdraw->base.drawable = drawable; pdraw->base.psc = &psc->base; pdraw->bufferCount = 0; pdraw->swap_interval = dri_get_initial_swap_interval(psc->base.frontend_screen); pdraw->have_back = 0; DRI2CreateDrawable(psc->base.dpy, xDrawable); /* Create a new drawable */ pdraw->base.dri_drawable = dri_create_drawable(psc->base.frontend_screen, config->driConfig, false, pdraw); if (!pdraw->base.dri_drawable) { DRI2DestroyDrawable(psc->base.dpy, xDrawable); free(pdraw); return NULL; } if (__glxHashInsert(dpyPriv->dri2Hash, xDrawable, pdraw)) { driDestroyDrawable(pdraw->base.dri_drawable); DRI2DestroyDrawable(psc->base.dpy, xDrawable); free(pdraw); return None; } /* * Make sure server has the same swap interval we do for the new * drawable. */ if (base->driScreen.setSwapInterval) base->driScreen.setSwapInterval(&pdraw->base, pdraw->swap_interval); return &pdraw->base; } static int dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw, int64_t *ust, int64_t *msc, int64_t *sbc) { xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy); xcb_dri2_get_msc_cookie_t get_msc_cookie; xcb_dri2_get_msc_reply_t *get_msc_reply; get_msc_cookie = xcb_dri2_get_msc_unchecked(c, pdraw->xDrawable); get_msc_reply = xcb_dri2_get_msc_reply(c, get_msc_cookie, NULL); if (!get_msc_reply) return 0; *ust = merge_counter(get_msc_reply->ust_hi, get_msc_reply->ust_lo); *msc = merge_counter(get_msc_reply->msc_hi, get_msc_reply->msc_lo); *sbc = merge_counter(get_msc_reply->sbc_hi, get_msc_reply->sbc_lo); free(get_msc_reply); return 1; } static int dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc) { xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy); xcb_dri2_wait_msc_cookie_t wait_msc_cookie; xcb_dri2_wait_msc_reply_t *wait_msc_reply; uint32_t target_msc_hi, target_msc_lo; uint32_t divisor_hi, divisor_lo; uint32_t remainder_hi, remainder_lo; split_counter(target_msc, &target_msc_hi, &target_msc_lo); split_counter(divisor, &divisor_hi, &divisor_lo); split_counter(remainder, &remainder_hi, &remainder_lo); wait_msc_cookie = xcb_dri2_wait_msc_unchecked(c, pdraw->xDrawable, target_msc_hi, target_msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo); wait_msc_reply = xcb_dri2_wait_msc_reply(c, wait_msc_cookie, NULL); if (!wait_msc_reply) return 0; *ust = merge_counter(wait_msc_reply->ust_hi, wait_msc_reply->ust_lo); *msc = merge_counter(wait_msc_reply->msc_hi, wait_msc_reply->msc_lo); *sbc = merge_counter(wait_msc_reply->sbc_hi, wait_msc_reply->sbc_lo); free(wait_msc_reply); return 1; } static int dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust, int64_t *msc, int64_t *sbc) { xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy); xcb_dri2_wait_sbc_cookie_t wait_sbc_cookie; xcb_dri2_wait_sbc_reply_t *wait_sbc_reply; uint32_t target_sbc_hi, target_sbc_lo; split_counter(target_sbc, &target_sbc_hi, &target_sbc_lo); wait_sbc_cookie = xcb_dri2_wait_sbc_unchecked(c, pdraw->xDrawable, target_sbc_hi, target_sbc_lo); wait_sbc_reply = xcb_dri2_wait_sbc_reply(c, wait_sbc_cookie, NULL); if (!wait_sbc_reply) return 0; *ust = merge_counter(wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo); *msc = merge_counter(wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo); *sbc = merge_counter(wait_sbc_reply->sbc_hi, wait_sbc_reply->sbc_lo); free(wait_sbc_reply); return 1; } static __DRIcontext * dri2GetCurrentContext() { struct glx_context *gc = __glXGetCurrentContext(); return (gc != &dummyContext) ? gc->driContext : NULL; } /** * 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) { __DRIcontext *ctx = dri2GetCurrentContext(); dri_throttle(ctx, draw->base.dri_drawable, reason); } /** * Asks the driver to flush any queued work necessary for serializing with the * X command stream, and optionally the slightly more strict requirement of * glFlush() equivalence (which would require flushing even if nothing had * been drawn to a window system framebuffer, for example). */ static void dri2Flush(struct dri2_screen *psc, __DRIcontext *ctx, struct dri2_drawable *draw, unsigned flags, enum __DRI2throttleReason throttle_reason) { if (ctx) { dri_flush(ctx, draw->base.dri_drawable, flags, throttle_reason); } else { if (flags & __DRI2_FLUSH_CONTEXT) glFlush(); dri_flush_drawable(draw->base.dri_drawable); dri2Throttle(psc, draw, throttle_reason); } } static void __dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height, enum __DRI2throttleReason reason, Bool flush) { struct dri2_drawable *priv = (struct dri2_drawable *) pdraw; struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc; XRectangle xrect; XserverRegion region; __DRIcontext *ctx = dri2GetCurrentContext(); unsigned flags; /* 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; flags = __DRI2_FLUSH_DRAWABLE; if (flush) flags |= __DRI2_FLUSH_CONTEXT; dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_COPYSUBBUFFER); 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, Bool flush) { __dri2CopySubBuffer(pdraw, x, y, width, height, __DRI2_THROTTLE_COPYSUBBUFFER, flush); } 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; dri_flush_drawable(priv->base.dri_drawable); 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); } /** * Called by the driver when it needs to update the real front buffer with the * contents of its fake front buffer. */ static void dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate) { struct glx_display *priv; 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); if (priv == NULL) return; gc = __glXGetCurrentContext(); dri2Throttle(psc, pdraw, __DRI2_THROTTLE_FLUSHFRONT); dri2_wait_gl(gc); } static void dri2DeinitScreen(struct glx_screen *base) { struct dri2_screen *psc = (struct dri2_screen *) base; close(psc->fd); } /** * 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 int64_t dri2XcbSwapBuffers(Display *dpy, __GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, int64_t remainder) { xcb_dri2_swap_buffers_cookie_t swap_buffers_cookie; xcb_dri2_swap_buffers_reply_t *swap_buffers_reply; uint32_t target_msc_hi, target_msc_lo; uint32_t divisor_hi, divisor_lo; uint32_t remainder_hi, remainder_lo; int64_t ret = 0; xcb_connection_t *c = XGetXCBConnection(dpy); split_counter(target_msc, &target_msc_hi, &target_msc_lo); split_counter(divisor, &divisor_hi, &divisor_lo); split_counter(remainder, &remainder_hi, &remainder_lo); swap_buffers_cookie = xcb_dri2_swap_buffers_unchecked(c, pdraw->xDrawable, target_msc_hi, target_msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo); /* Immediately wait on the swapbuffers reply. If we didn't, we'd have * to do so some time before reusing a (non-pageflipped) backbuffer. * Otherwise, the new rendering could get ahead of the X Server's * dispatch of the swapbuffer and you'd display garbage. * * We use XSync() first to reap the invalidate events through the event * filter, to ensure that the next drawing doesn't use an invalidated * buffer. */ XSync(dpy, False); swap_buffers_reply = xcb_dri2_swap_buffers_reply(c, swap_buffers_cookie, NULL); if (swap_buffers_reply) { ret = merge_counter(swap_buffers_reply->swap_hi, swap_buffers_reply->swap_lo); free(swap_buffers_reply); } return ret; } static int64_t dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor, int64_t remainder, Bool flush) { struct dri2_drawable *priv = (struct dri2_drawable *) pdraw; struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc; int64_t ret = 0; /* Check we have the right attachments */ if (!priv->have_back) return ret; __DRIcontext *ctx = dri2GetCurrentContext(); unsigned flags = __DRI2_FLUSH_DRAWABLE; if (flush) flags |= __DRI2_FLUSH_CONTEXT; dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_SWAPBUFFER); ret = dri2XcbSwapBuffers(pdraw->psc->dpy, pdraw, target_msc, divisor, remainder); 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); free(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); free(buffers); return pdraw->buffers; } static int dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval) { xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy); struct dri2_drawable *priv = (struct dri2_drawable *) pdraw; struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc; if (!dri_valid_swap_interval(psc->base.frontend_screen, interval)) return GLX_BAD_VALUE; xcb_dri2_swap_interval(c, 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; } static const __DRIdri2LoaderExtension dri2LoaderExtension = { .base = { __DRI_DRI2_LOADER, 3 }, .getBuffers = dri2GetBuffers, .flushFrontBuffer = dri2FlushFrontBuffer, .getBuffersWithFormat = dri2GetBuffersWithFormat, }; _X_HIDDEN void dri2InvalidateBuffers(Display *dpy, XID drawable) { __GLXDRIdrawable *pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, drawable); if (!pdraw) return; dri_invalidate_drawable(pdraw->dri_drawable); } static const struct glx_context_vtable dri2_context_vtable = { .destroy = dri_destroy_context, .bind = dri_bind_context, .unbind = dri_unbind_context, .wait_gl = dri2_wait_gl, .wait_x = dri2_wait_x, }; static const __DRIextension *loader_extensions[] = { &dri2LoaderExtension.base, &dri2UseInvalidate.base, &driBackgroundCallable.base, NULL }; struct glx_screen * dri2CreateScreen(int screen, struct glx_display * priv, bool driver_name_is_inferred) { struct dri2_screen *psc; __GLXDRIscreen *psp; char *driverName = NULL, *loader_driverName, *deviceName, *tmp; drm_magic_t magic; psc = calloc(1, sizeof *psc); if (psc == NULL) return NULL; psc->fd = -1; if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen), &driverName, &deviceName)) { glx_screen_cleanup(&psc->base); free(psc); InfoMessageF("screen %d does not appear to be DRI2 capable\n", screen); return NULL; } psc->fd = loader_open_device(deviceName); if (psc->fd < 0) { ErrorMessageF("failed to open %s: %s\n", deviceName, 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 Mesa knows about the appropriate driver for this fd, then trust it. * Otherwise, default to the server's value. */ loader_driverName = loader_get_driver_for_fd(psc->fd); if (loader_driverName) { free(driverName); driverName = loader_driverName; } psc->base.driverName = driverName; priv->driver = GLX_DRIVER_DRI2; if (!dri_screen_init(&psc->base, priv, screen, psc->fd, loader_extensions, driver_name_is_inferred)) { ErrorMessageF("glx: failed to create dri2 screen\n"); goto handle_error; } psc->base.context_vtable = &dri2_context_vtable; psp = &psc->base.driScreen; psp->deinitScreen = dri2DeinitScreen; psp->createDrawable = dri2CreateDrawable; psp->swapBuffers = dri2SwapBuffers; psp->getDrawableMSC = NULL; psp->waitForMSC = NULL; psp->waitForSBC = NULL; psp->setSwapInterval = NULL; psp->getSwapInterval = NULL; psp->getDrawableMSC = dri2DrawableGetMSC; psp->waitForMSC = dri2WaitForMSC; psp->waitForSBC = dri2WaitForSBC; psp->setSwapInterval = dri2SetSwapInterval; psp->getSwapInterval = dri2GetSwapInterval; psp->maxSwapInterval = INT_MAX; psc->base.can_EXT_texture_from_pixmap = true; /* DRI2 supports SubBuffer through DRI2CopyRegion, so it's always * available.*/ psp->copySubBuffer = dri2CopySubBuffer; free(deviceName); tmp = getenv("LIBGL_SHOW_FPS"); psc->show_fps_interval = (tmp) ? atoi(tmp) : 0; if (psc->show_fps_interval < 0) psc->show_fps_interval = 0; InfoMessageF("Using DRI2 for screen %d\n", screen); return &psc->base; handle_error: CriticalErrorMessageF("failed to load driver: %s\n", driverName); if (psc->fd >= 0) close(psc->fd); free(deviceName); glx_screen_cleanup(&psc->base); free(psc); return NULL; } _X_HIDDEN __GLXDRIdrawable * dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id) { struct glx_display *d = __glXInitialize(dpy); __GLXDRIdrawable *pdraw; if (__glxHashLookup(d->dri2Hash, id, (void *) &pdraw) == 0) return pdraw; return NULL; } bool dri2CheckSupport(Display *dpy) { int eventBase, errorBase; int driMajor, driMinor; if (!DRI2QueryExtension(dpy, &eventBase, &errorBase)) return false; if (!DRI2QueryVersion(dpy, &driMajor, &driMinor) || driMinor < 3) { return false; } return true; } #endif /* GLX_DIRECT_RENDERING */