kolibrios/drivers/video/Gallium/auxiliary/vl/vl_winsys_dri.c

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/**************************************************************************
*
* 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;
};
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);
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/2) / scrn->ns_frame + scrn->last_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));
while (screen--)
xcb_screen_next(&s);
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 + 1);
memcpy(device_name, xcb_dri2_connect_device_name(connect), device_name_length);
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);
}