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/*
* Copyright © 2017 Valve Corporation.
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "main/mtypes.h"
#include "main/context.h"
#include "main/externalobjects.h"
#include "st_context.h"
#include "st_texture.h"
#include "st_util.h"
#include "st_cb_bitmap.h"
#include "st_cb_bufferobjects.h"
#include "st_cb_semaphoreobjects.h"
#include "state_tracker/drm_driver.h"
#include "pipe/p_context.h"
#include "pipe/p_screen.h"
static struct gl_semaphore_object *
st_semaphoreobj_alloc(struct gl_context *ctx, GLuint name)
{
struct st_semaphore_object *st_obj = ST_CALLOC_STRUCT(st_semaphore_object);
if (!st_obj)
return NULL;
_mesa_initialize_semaphore_object(ctx, &st_obj->Base, name);
return &st_obj->Base;
}
static void
st_semaphoreobj_free(struct gl_context *ctx,
struct gl_semaphore_object *semObj)
{
_mesa_delete_semaphore_object(ctx, semObj);
}
static void
st_import_semaphoreobj_fd(struct gl_context *ctx,
struct gl_semaphore_object *semObj,
int fd)
{
struct st_semaphore_object *st_obj = st_semaphore_object(semObj);
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
pipe->create_fence_fd(pipe, &st_obj->fence, fd, PIPE_FD_TYPE_SYNCOBJ);
#if !defined(_WIN32)
/* We own fd, but we no longer need it. So get rid of it */
close(fd);
#endif
}
static void
st_server_wait_semaphore(struct gl_context *ctx,
struct gl_semaphore_object *semObj,
GLuint numBufferBarriers,
struct gl_buffer_object **bufObjs,
GLuint numTextureBarriers,
struct gl_texture_object **texObjs,
const GLenum *srcLayouts)
{
struct st_semaphore_object *st_obj = st_semaphore_object(semObj);
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_buffer_object *bufObj;
struct st_texture_object *texObj;
/* The driver is allowed to flush during fence_server_sync, be prepared */
st_flush_bitmap_cache(st);
pipe->fence_server_sync(pipe, st_obj->fence);
/**
* According to the EXT_external_objects spec, the memory operations must
* follow the wait. This is to make sure the flush is executed after the
* other party is done modifying the memory.
*
* Relevant excerpt from section "4.2.3 Waiting for Semaphores":
*
* Following completion of the semaphore wait operation, memory will also be
* made visible in the specified buffer and texture objects.
*
*/
for (unsigned i = 0; i < numBufferBarriers; i++) {
if (!bufObjs[i])
continue;
bufObj = st_buffer_object(bufObjs[i]);
pipe->flush_resource(pipe, bufObj->buffer);
}
for (unsigned i = 0; i < numTextureBarriers; i++) {
if (!texObjs[i])
continue;
texObj = st_texture_object(texObjs[i]);
pipe->flush_resource(pipe, texObj->pt);
}
}
static void
st_server_signal_semaphore(struct gl_context *ctx,
struct gl_semaphore_object *semObj,
GLuint numBufferBarriers,
struct gl_buffer_object **bufObjs,
GLuint numTextureBarriers,
struct gl_texture_object **texObjs,
const GLenum *dstLayouts)
{
struct st_semaphore_object *st_obj = st_semaphore_object(semObj);
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_buffer_object *bufObj;
struct st_texture_object *texObj;
for (unsigned i = 0; i < numBufferBarriers; i++) {
if (!bufObjs[i])
continue;
bufObj = st_buffer_object(bufObjs[i]);
pipe->flush_resource(pipe, bufObj->buffer);
}
for (unsigned i = 0; i < numTextureBarriers; i++) {
if (!texObjs[i])
continue;
texObj = st_texture_object(texObjs[i]);
pipe->flush_resource(pipe, texObj->pt);
}
/* The driver is allowed to flush during fence_server_signal, be prepared */
st_flush_bitmap_cache(st);
pipe->fence_server_signal(pipe, st_obj->fence);
}
void
st_init_semaphoreobject_functions(struct dd_function_table *functions)
{
functions->NewSemaphoreObject = st_semaphoreobj_alloc;
functions->DeleteSemaphoreObject = st_semaphoreobj_free;
functions->ImportSemaphoreFd = st_import_semaphoreobj_fd;
functions->ServerWaitSemaphoreObject = st_server_wait_semaphore;
functions->ServerSignalSemaphoreObject = st_server_signal_semaphore;
}
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