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-rw-r--r--src/glx/x11/dri2_glx.c392
1 files changed, 392 insertions, 0 deletions
diff --git a/src/glx/x11/dri2_glx.c b/src/glx/x11/dri2_glx.c
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+++ b/src/glx/x11/dri2_glx.c
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+/*
+ * 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)
+ */
+
+#ifdef GLX_DIRECT_RENDERING
+
+#include <X11/Xlib.h>
+#include <X11/extensions/Xfixes.h>
+#include <X11/extensions/Xdamage.h>
+#include "glxclient.h"
+#include "glcontextmodes.h"
+#include "xf86dri.h"
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include "xf86drm.h"
+#include "dri2.h"
+#include "dri_common.h"
+
+typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
+typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
+typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;
+
+struct __GLXDRIdisplayPrivateRec {
+ __GLXDRIdisplay base;
+
+ /*
+ ** XFree86-DRI version information
+ */
+ int driMajor;
+ int driMinor;
+ int driPatch;
+};
+
+struct __GLXDRIcontextPrivateRec {
+ __GLXDRIcontext base;
+ __DRIcontext *driContext;
+ __GLXscreenConfigs *psc;
+};
+
+struct __GLXDRIdrawablePrivateRec {
+ __GLXDRIdrawable base;
+ __DRIbuffer buffers[5];
+ int bufferCount;
+ int width, height;
+};
+
+static void dri2DestroyContext(__GLXDRIcontext *context,
+ __GLXscreenConfigs *psc, Display *dpy)
+{
+ __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
+ const __DRIcoreExtension *core = pcp->psc->core;
+
+ (*core->destroyContext)(pcp->driContext);
+
+ Xfree(pcp);
+}
+
+static Bool dri2BindContext(__GLXDRIcontext *context,
+ __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
+{
+ __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
+ const __DRIcoreExtension *core = pcp->psc->core;
+
+ return (*core->bindContext)(pcp->driContext,
+ draw->driDrawable,
+ read->driDrawable);
+}
+
+static void dri2UnbindContext(__GLXDRIcontext *context)
+{
+ __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
+ const __DRIcoreExtension *core = pcp->psc->core;
+
+ (*core->unbindContext)(pcp->driContext);
+}
+
+static __GLXDRIcontext *dri2CreateContext(__GLXscreenConfigs *psc,
+ const __GLcontextModes *mode,
+ GLXContext gc,
+ GLXContext shareList, int renderType)
+{
+ __GLXDRIcontextPrivate *pcp, *pcp_shared;
+ __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
+ __DRIcontext *shared = NULL;
+
+ if (shareList) {
+ pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
+ shared = pcp_shared->driContext;
+ }
+
+ pcp = Xmalloc(sizeof *pcp);
+ if (pcp == NULL)
+ return NULL;
+
+ pcp->psc = psc;
+ pcp->driContext =
+ (*psc->dri2->createNewContext)(psc->__driScreen,
+ config->driConfig, shared, pcp);
+ gc->__driContext = pcp->driContext;
+
+ if (pcp->driContext == NULL) {
+ Xfree(pcp);
+ return NULL;
+ }
+
+ pcp->base.destroyContext = dri2DestroyContext;
+ pcp->base.bindContext = dri2BindContext;
+ pcp->base.unbindContext = dri2UnbindContext;
+
+ return &pcp->base;
+}
+
+static void dri2DestroyDrawable(__GLXDRIdrawable *pdraw)
+{
+ const __DRIcoreExtension *core = pdraw->psc->core;
+
+ (*core->destroyDrawable)(pdraw->driDrawable);
+ DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->drawable);
+ Xfree(pdraw);
+}
+
+static __GLXDRIdrawable *dri2CreateDrawable(__GLXscreenConfigs *psc,
+ XID xDrawable,
+ GLXDrawable drawable,
+ const __GLcontextModes *modes)
+{
+ __GLXDRIdrawablePrivate *pdraw;
+ __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
+
+ pdraw = Xmalloc(sizeof(*pdraw));
+ if (!pdraw)
+ return NULL;
+
+ pdraw->base.destroyDrawable = dri2DestroyDrawable;
+ pdraw->base.xDrawable = xDrawable;
+ pdraw->base.drawable = drawable;
+ pdraw->base.psc = psc;
+
+ DRI2CreateDrawable(psc->dpy, xDrawable);
+
+ /* Create a new drawable */
+ pdraw->base.driDrawable =
+ (*psc->dri2->createNewDrawable)(psc->__driScreen,
+ config->driConfig, pdraw);
+
+ if (!pdraw->base.driDrawable) {
+ DRI2DestroyDrawable(psc->dpy, drawable);
+ Xfree(pdraw);
+ return NULL;
+ }
+
+ return &pdraw->base;
+}
+
+static void dri2CopySubBuffer(__GLXDRIdrawable *pdraw,
+ int x, int y, int width, int height)
+{
+ __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
+ XRectangle xrect;
+ XserverRegion region;
+
+ xrect.x = x;
+ xrect.y = priv->height - y - height;
+ xrect.width = width;
+ xrect.height = height;
+
+ region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
+ DRI2CopyRegion(pdraw->psc->dpy, pdraw->drawable, region,
+ DRI2BufferFrontLeft, DRI2BufferBackLeft);
+ XFixesDestroyRegion(pdraw->psc->dpy, region);
+}
+
+static void dri2SwapBuffers(__GLXDRIdrawable *pdraw)
+{
+ __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
+
+ dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
+}
+
+static void dri2DestroyScreen(__GLXscreenConfigs *psc)
+{
+ /* Free the direct rendering per screen data */
+ (*psc->core->destroyScreen)(psc->__driScreen);
+ close(psc->fd);
+ psc->__driScreen = NULL;
+}
+
+static __DRIbuffer *
+dri2GetBuffers(__DRIdrawable *driDrawable,
+ int *width, int *height,
+ unsigned int *attachments, int count,
+ int *out_count, void *loaderPrivate)
+{
+ __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
+ DRI2Buffer *buffers;
+ int i;
+
+ 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;
+
+ /* This assumes the DRI2 buffer attachment tokens matches the
+ * __DRIbuffer tokens. */
+ for (i = 0; i < *out_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;
+ }
+
+ Xfree(buffers);
+
+ return pdraw->buffers;
+}
+
+static const __DRIdri2LoaderExtension dri2LoaderExtension = {
+ { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION },
+ dri2GetBuffers,
+};
+
+static const __DRIextension *loader_extensions[] = {
+ &dri2LoaderExtension.base,
+ &systemTimeExtension.base,
+ NULL
+};
+
+static __GLXDRIscreen *dri2CreateScreen(__GLXscreenConfigs *psc, int screen,
+ __GLXdisplayPrivate *priv)
+{
+ const __DRIconfig **driver_configs;
+ const __DRIextension **extensions;
+ __GLXDRIscreen *psp;
+ char *driverName, *deviceName;
+ drm_magic_t magic;
+ int i;
+
+ psp = Xmalloc(sizeof *psp);
+ if (psp == NULL)
+ return NULL;
+
+ /* Initialize per screen dynamic client GLX extensions */
+ psc->ext_list_first_time = GL_TRUE;
+
+ if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
+ &driverName, &deviceName))
+ return NULL;
+
+ psc->driver = driOpenDriver(driverName);
+ if (psc->driver == NULL)
+ 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;
+ }
+
+ psc->fd = open(deviceName, O_RDWR);
+ if (psc->fd < 0) {
+ ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
+ return NULL;
+ }
+
+ if (drmGetMagic(psc->fd, &magic))
+ return NULL;
+
+ if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic))
+ return NULL;
+
+ psc->__driScreen =
+ psc->dri2->createNewScreen(screen, psc->fd,
+ loader_extensions, &driver_configs, psc);
+ if (psc->__driScreen == NULL) {
+ ErrorMessageF("failed to create dri screen\n");
+ return NULL;
+ }
+
+ driBindExtensions(psc, 1);
+
+ psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
+ psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
+
+ psp->destroyScreen = dri2DestroyScreen;
+ psp->createContext = dri2CreateContext;
+ psp->createDrawable = dri2CreateDrawable;
+ psp->swapBuffers = dri2SwapBuffers;
+
+ /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
+ * available.*/
+ psp->copySubBuffer = dri2CopySubBuffer;
+ __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
+
+ Xfree(driverName);
+ Xfree(deviceName);
+
+ return psp;
+
+ handle_error:
+ Xfree(driverName);
+ Xfree(deviceName);
+
+ /* FIXME: clean up here */
+
+ return NULL;
+}
+
+/* Called from __glXFreeDisplayPrivate.
+ */
+static void dri2DestroyDisplay(__GLXDRIdisplay *dpy)
+{
+ Xfree(dpy);
+}
+
+/*
+ * 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)
+{
+ __GLXDRIdisplayPrivate *pdp;
+ int eventBase, errorBase;
+
+ 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->base.destroyDisplay = dri2DestroyDisplay;
+ pdp->base.createScreen = dri2CreateScreen;
+
+ return &pdp->base;
+}
+
+#endif /* GLX_DIRECT_RENDERING */
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