summaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary/vl/vl_winsys_dri.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/auxiliary/vl/vl_winsys_dri.c')
-rw-r--r--src/gallium/auxiliary/vl/vl_winsys_dri.c400
1 files changed, 400 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/vl/vl_winsys_dri.c b/src/gallium/auxiliary/vl/vl_winsys_dri.c
new file mode 100644
index 0000000..8e4e026
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_winsys_dri.c
@@ -0,0 +1,400 @@
+/**************************************************************************
+ *
+ * Copyright 2009 Younes Manton.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/* directly referenced from target Makefile, because of X dependencies */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <X11/Xlib-xcb.h>
+#include <xcb/dri2.h>
+#include <xf86drm.h>
+
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "state_tracker/drm_driver.h"
+
+#include "util/u_memory.h"
+#include "util/u_hash.h"
+#include "util/u_hash_table.h"
+#include "util/u_inlines.h"
+
+#include "vl/vl_compositor.h"
+#include "vl/vl_winsys.h"
+
+struct vl_dri_screen
+{
+ struct vl_screen base;
+ xcb_connection_t *conn;
+ xcb_drawable_t drawable;
+
+ unsigned width, height;
+
+ bool current_buffer;
+ uint32_t buffer_names[2];
+ struct u_rect dirty_areas[2];
+
+ bool flushed;
+ xcb_dri2_swap_buffers_cookie_t swap_cookie;
+ xcb_dri2_wait_sbc_cookie_t wait_cookie;
+ xcb_dri2_get_buffers_cookie_t buffers_cookie;
+
+ int64_t last_ust, ns_frame, last_msc, next_msc, skew_msc;
+};
+
+static const unsigned int attachments[1] = { XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT };
+
+static void
+vl_dri2_handle_stamps(struct vl_dri_screen* scrn,
+ uint32_t ust_hi, uint32_t ust_lo,
+ uint32_t msc_hi, uint32_t msc_lo)
+{
+ int64_t ust = ((((uint64_t)ust_hi) << 32) | ust_lo) * 1000;
+ int64_t msc = (((uint64_t)msc_hi) << 32) | msc_lo;
+
+ if (scrn->last_ust && scrn->last_msc && (ust > scrn->last_ust) && (msc > scrn->last_msc))
+ scrn->ns_frame = (ust - scrn->last_ust) / (msc - scrn->last_msc);
+
+ if (scrn->next_msc && (scrn->next_msc < msc))
+ scrn->skew_msc++;
+
+ scrn->last_ust = ust;
+ scrn->last_msc = msc;
+}
+
+static xcb_dri2_get_buffers_reply_t*
+vl_dri2_get_flush_reply(struct vl_dri_screen *scrn)
+{
+ xcb_dri2_wait_sbc_reply_t *wait_sbc_reply;
+
+ assert(scrn);
+
+ if (!scrn->flushed)
+ return NULL;
+
+ scrn->flushed = false;
+
+ free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
+
+ wait_sbc_reply = xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL);
+ if (!wait_sbc_reply)
+ return NULL;
+ vl_dri2_handle_stamps(scrn, wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo,
+ wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo);
+ free(wait_sbc_reply);
+
+ return xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL);
+}
+
+static void
+vl_dri2_flush_frontbuffer(struct pipe_screen *screen,
+ struct pipe_resource *resource,
+ unsigned level, unsigned layer,
+ void *context_private)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)context_private;
+ uint32_t msc_hi, msc_lo;
+
+ assert(screen);
+ assert(resource);
+ assert(context_private);
+
+ free(vl_dri2_get_flush_reply(scrn));
+
+ msc_hi = scrn->next_msc >> 32;
+ msc_lo = scrn->next_msc & 0xFFFFFFFF;
+
+ scrn->swap_cookie = xcb_dri2_swap_buffers_unchecked(scrn->conn, scrn->drawable, msc_hi, msc_lo, 0, 0, 0, 0);
+ scrn->wait_cookie = xcb_dri2_wait_sbc_unchecked(scrn->conn, scrn->drawable, 0, 0);
+ scrn->buffers_cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, scrn->drawable, 1, 1, attachments);
+
+ scrn->flushed = true;
+ scrn->current_buffer = !scrn->current_buffer;
+}
+
+static void
+vl_dri2_destroy_drawable(struct vl_dri_screen *scrn)
+{
+ xcb_void_cookie_t destroy_cookie;
+ if (scrn->drawable) {
+ free(vl_dri2_get_flush_reply(scrn));
+ destroy_cookie = xcb_dri2_destroy_drawable_checked(scrn->conn, scrn->drawable);
+ /* ignore any error here, since the drawable can be destroyed long ago */
+ free(xcb_request_check(scrn->conn, destroy_cookie));
+ }
+}
+
+static void
+vl_dri2_set_drawable(struct vl_dri_screen *scrn, Drawable drawable)
+{
+ assert(scrn);
+ assert(drawable);
+
+ if (scrn->drawable == drawable)
+ return;
+
+ vl_dri2_destroy_drawable(scrn);
+
+ xcb_dri2_create_drawable(scrn->conn, drawable);
+ scrn->current_buffer = false;
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
+ scrn->drawable = drawable;
+}
+
+struct pipe_resource*
+vl_screen_texture_from_drawable(struct vl_screen *vscreen, Drawable drawable)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)vscreen;
+
+ struct winsys_handle dri2_handle;
+ struct pipe_resource template, *tex;
+
+ xcb_dri2_get_buffers_reply_t *reply;
+ xcb_dri2_dri2_buffer_t *buffers, *back_left;
+
+ unsigned i;
+
+ assert(scrn);
+
+ vl_dri2_set_drawable(scrn, drawable);
+ reply = vl_dri2_get_flush_reply(scrn);
+ if (!reply) {
+ xcb_dri2_get_buffers_cookie_t cookie;
+ cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, drawable, 1, 1, attachments);
+ reply = xcb_dri2_get_buffers_reply(scrn->conn, cookie, NULL);
+ }
+ if (!reply)
+ return NULL;
+
+ buffers = xcb_dri2_get_buffers_buffers(reply);
+ if (!buffers) {
+ free(reply);
+ return NULL;
+ }
+
+ for (i = 0; i < reply->count; ++i) {
+ if (buffers[i].attachment == XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT) {
+ back_left = &buffers[i];
+ break;
+ }
+ }
+
+ if (i == reply->count) {
+ free(reply);
+ return NULL;
+ }
+
+ if (reply->width != scrn->width || reply->height != scrn->height) {
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
+ scrn->width = reply->width;
+ scrn->height = reply->height;
+
+ } else if (back_left->name != scrn->buffer_names[scrn->current_buffer]) {
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->current_buffer]);
+ scrn->buffer_names[scrn->current_buffer] = back_left->name;
+ }
+
+ memset(&dri2_handle, 0, sizeof(dri2_handle));
+ dri2_handle.type = DRM_API_HANDLE_TYPE_SHARED;
+ dri2_handle.handle = back_left->name;
+ dri2_handle.stride = back_left->pitch;
+
+ memset(&template, 0, sizeof(template));
+ template.target = PIPE_TEXTURE_2D;
+ template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
+ template.last_level = 0;
+ template.width0 = reply->width;
+ template.height0 = reply->height;
+ template.depth0 = 1;
+ template.array_size = 1;
+ template.usage = PIPE_USAGE_STATIC;
+ template.bind = PIPE_BIND_RENDER_TARGET;
+ template.flags = 0;
+
+ tex = scrn->base.pscreen->resource_from_handle(scrn->base.pscreen, &template, &dri2_handle);
+ free(reply);
+
+ return tex;
+}
+
+struct u_rect *
+vl_screen_get_dirty_area(struct vl_screen *vscreen)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)vscreen;
+ assert(scrn);
+ return &scrn->dirty_areas[scrn->current_buffer];
+}
+
+uint64_t
+vl_screen_get_timestamp(struct vl_screen *vscreen, Drawable drawable)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)vscreen;
+ xcb_dri2_get_msc_cookie_t cookie;
+ xcb_dri2_get_msc_reply_t *reply;
+
+ assert(scrn);
+
+ vl_dri2_set_drawable(scrn, drawable);
+ if (!scrn->last_ust) {
+ cookie = xcb_dri2_get_msc_unchecked(scrn->conn, drawable);
+ reply = xcb_dri2_get_msc_reply(scrn->conn, cookie, NULL);
+
+ if (reply) {
+ vl_dri2_handle_stamps(scrn, reply->ust_hi, reply->ust_lo,
+ reply->msc_hi, reply->msc_lo);
+ free(reply);
+ }
+ }
+ return scrn->last_ust;
+}
+
+void
+vl_screen_set_next_timestamp(struct vl_screen *vscreen, uint64_t stamp)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)vscreen;
+ assert(scrn);
+ if (stamp && scrn->last_ust && scrn->ns_frame && scrn->last_msc)
+ scrn->next_msc = ((int64_t)stamp - scrn->last_ust) / scrn->ns_frame + scrn->last_msc + scrn->skew_msc;
+ else
+ scrn->next_msc = 0;
+}
+
+void*
+vl_screen_get_private(struct vl_screen *vscreen)
+{
+ return vscreen;
+}
+
+struct vl_screen*
+vl_screen_create(Display *display, int screen)
+{
+ struct vl_dri_screen *scrn;
+ const xcb_query_extension_reply_t *extension;
+ xcb_dri2_query_version_cookie_t dri2_query_cookie;
+ xcb_dri2_query_version_reply_t *dri2_query = NULL;
+ xcb_dri2_connect_cookie_t connect_cookie;
+ xcb_dri2_connect_reply_t *connect = NULL;
+ xcb_dri2_authenticate_cookie_t authenticate_cookie;
+ xcb_dri2_authenticate_reply_t *authenticate = NULL;
+ xcb_screen_iterator_t s;
+ xcb_generic_error_t *error = NULL;
+ char *device_name;
+ int fd, device_name_length;
+
+ drm_magic_t magic;
+
+ assert(display);
+
+ scrn = CALLOC_STRUCT(vl_dri_screen);
+ if (!scrn)
+ return NULL;
+
+ scrn->conn = XGetXCBConnection(display);
+ if (!scrn->conn)
+ goto free_screen;
+
+ xcb_prefetch_extension_data(scrn->conn, &xcb_dri2_id);
+
+ extension = xcb_get_extension_data(scrn->conn, &xcb_dri2_id);
+ if (!(extension && extension->present))
+ goto free_screen;
+
+ dri2_query_cookie = xcb_dri2_query_version (scrn->conn, XCB_DRI2_MAJOR_VERSION, XCB_DRI2_MINOR_VERSION);
+ dri2_query = xcb_dri2_query_version_reply (scrn->conn, dri2_query_cookie, &error);
+ if (dri2_query == NULL || error != NULL || dri2_query->minor_version < 2)
+ goto free_screen;
+
+ s = xcb_setup_roots_iterator(xcb_get_setup(scrn->conn));
+ connect_cookie = xcb_dri2_connect_unchecked(scrn->conn, s.data->root, XCB_DRI2_DRIVER_TYPE_DRI);
+ connect = xcb_dri2_connect_reply(scrn->conn, connect_cookie, NULL);
+ if (connect == NULL || connect->driver_name_length + connect->device_name_length == 0)
+ goto free_screen;
+
+ device_name_length = xcb_dri2_connect_device_name_length(connect);
+ device_name = CALLOC(1, device_name_length);
+ memcpy(device_name, xcb_dri2_connect_device_name(connect), device_name_length);
+ device_name[device_name_length] = 0;
+ fd = open(device_name, O_RDWR);
+ free(device_name);
+
+ if (fd < 0)
+ goto free_screen;
+
+ if (drmGetMagic(fd, &magic))
+ goto free_screen;
+
+ authenticate_cookie = xcb_dri2_authenticate_unchecked(scrn->conn, s.data->root, magic);
+ authenticate = xcb_dri2_authenticate_reply(scrn->conn, authenticate_cookie, NULL);
+
+ if (authenticate == NULL || !authenticate->authenticated)
+ goto free_screen;
+
+ scrn->base.pscreen = driver_descriptor.create_screen(fd);
+ if (!scrn->base.pscreen)
+ goto free_screen;
+
+ scrn->base.pscreen->flush_frontbuffer = vl_dri2_flush_frontbuffer;
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
+
+ free(dri2_query);
+ free(connect);
+ free(authenticate);
+
+ return &scrn->base;
+
+free_screen:
+ FREE(scrn);
+
+ free(dri2_query);
+ free(connect);
+ free(authenticate);
+ free(error);
+
+ return NULL;
+}
+
+void vl_screen_destroy(struct vl_screen *vscreen)
+{
+ struct vl_dri_screen *scrn = (struct vl_dri_screen*)vscreen;
+
+ assert(vscreen);
+
+ if (scrn->flushed) {
+ free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
+ free(xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL));
+ free(xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL));
+ }
+
+ vl_dri2_destroy_drawable(scrn);
+ scrn->base.pscreen->destroy(scrn->base.pscreen);
+ FREE(scrn);
+}