C++ (Cpp) fenced_buffer_create_gpu_storage_locked示例

示例#1

文件： pb_buffer_simple_fenced.c 项目： ashmew2/kolibriosSVN

/**
 * Wrap a buffer in a fenced buffer.
 */
static struct pb_buffer *
fenced_bufmgr_create_buffer(struct pb_manager *mgr,
                            pb_size size,
                            const struct pb_desc *desc)
{
   struct fenced_manager *fenced_mgr = fenced_manager(mgr);
   struct fenced_buffer *fenced_buf;
   enum pipe_error ret;

   fenced_buf = CALLOC_STRUCT(fenced_buffer);
   if(!fenced_buf)
      goto no_buffer;

   pipe_reference_init(&fenced_buf->base.reference, 1);
   fenced_buf->base.alignment = desc->alignment;
   fenced_buf->base.usage = desc->usage;
   fenced_buf->base.size = size;
   fenced_buf->size = size;

   fenced_buf->base.vtbl = &fenced_buffer_vtbl;
   fenced_buf->mgr = fenced_mgr;

   pipe_mutex_lock(fenced_mgr->mutex);

   /*
    * Try to create GPU storage without stalling,
    */
   ret = fenced_buffer_create_gpu_storage_locked(fenced_mgr, fenced_buf,
                                                 desc, TRUE);

   /*
    * Give up.
    */
   if(ret != PIPE_OK) {
      goto no_storage;
   }

   assert(fenced_buf->buffer);

   LIST_ADDTAIL(&fenced_buf->head, &fenced_mgr->unfenced);
   ++fenced_mgr->num_unfenced;
   pipe_mutex_unlock(fenced_mgr->mutex);

   return &fenced_buf->base;

no_storage:
   pipe_mutex_unlock(fenced_mgr->mutex);
   FREE(fenced_buf);
no_buffer:
   return NULL;
}

示例#2

文件： pb_buffer_fenced.c 项目： CPFDSoftware-Tony/gmv

/**
 * Wrap a buffer in a fenced buffer.
 */
static struct pb_buffer *
fenced_bufmgr_create_buffer(struct pb_manager *mgr,
                            pb_size size,
                            const struct pb_desc *desc)
{
   struct fenced_manager *fenced_mgr = fenced_manager(mgr);
   struct fenced_buffer *fenced_buf;
   enum pipe_error ret;

   /*
    * Don't stall the GPU, waste time evicting buffers, or waste memory
    * trying to create a buffer that will most likely never fit into the
    * graphics aperture.
    */
   if(size > fenced_mgr->max_buffer_size) {
      goto no_buffer;
   }

   fenced_buf = CALLOC_STRUCT(fenced_buffer);
   if(!fenced_buf)
      goto no_buffer;

   pipe_reference_init(&fenced_buf->base.base.reference, 1);
   fenced_buf->base.base.alignment = desc->alignment;
   fenced_buf->base.base.usage = desc->usage;
   fenced_buf->base.base.size = size;
   fenced_buf->size = size;
   fenced_buf->desc = *desc;

   fenced_buf->base.vtbl = &fenced_buffer_vtbl;
   fenced_buf->mgr = fenced_mgr;

   pipe_mutex_lock(fenced_mgr->mutex);

   /*
    * Try to create GPU storage without stalling,
    */
   ret = fenced_buffer_create_gpu_storage_locked(fenced_mgr, fenced_buf, FALSE);

   /*
    * Attempt to use CPU memory to avoid stalling the GPU.
    */
   if(ret != PIPE_OK) {
      ret = fenced_buffer_create_cpu_storage_locked(fenced_mgr, fenced_buf);
   }

   /*
    * Create GPU storage, waiting for some to be available.
    */
   if(ret != PIPE_OK) {
      ret = fenced_buffer_create_gpu_storage_locked(fenced_mgr, fenced_buf, TRUE);
   }

   /*
    * Give up.
    */
   if(ret != PIPE_OK) {
      goto no_storage;
   }

   assert(fenced_buf->buffer || fenced_buf->data);

   LIST_ADDTAIL(&fenced_buf->head, &fenced_mgr->unfenced);
   ++fenced_mgr->num_unfenced;
   pipe_mutex_unlock(fenced_mgr->mutex);

   return &fenced_buf->base;

no_storage:
   pipe_mutex_unlock(fenced_mgr->mutex);
   FREE(fenced_buf);
no_buffer:
   return NULL;
}

示例#3

文件： pb_buffer_fenced.c 项目： CPFDSoftware-Tony/gmv

static enum pipe_error
fenced_buffer_validate(struct pb_buffer *buf,
                       struct pb_validate *vl,
                       unsigned flags)
{
   struct fenced_buffer *fenced_buf = fenced_buffer(buf);
   struct fenced_manager *fenced_mgr = fenced_buf->mgr;
   enum pipe_error ret;

   pipe_mutex_lock(fenced_mgr->mutex);

   if(!vl) {
      /* invalidate */
      fenced_buf->vl = NULL;
      fenced_buf->validation_flags = 0;
      ret = PIPE_OK;
      goto done;
   }

   assert(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE);
   assert(!(flags & ~PIPE_BUFFER_USAGE_GPU_READ_WRITE));
   flags &= PIPE_BUFFER_USAGE_GPU_READ_WRITE;

   /* Buffer cannot be validated in two different lists */
   if(fenced_buf->vl && fenced_buf->vl != vl) {
      ret = PIPE_ERROR_RETRY;
      goto done;
   }

   if(fenced_buf->vl == vl &&
      (fenced_buf->validation_flags & flags) == flags) {
      /* Nothing to do -- buffer already validated */
      ret = PIPE_OK;
      goto done;
   }

   /*
    * Create and update GPU storage.
    */
   if(!fenced_buf->buffer) {
      assert(!fenced_buf->mapcount);

      ret = fenced_buffer_create_gpu_storage_locked(fenced_mgr, fenced_buf, TRUE);
      if(ret != PIPE_OK) {
         goto done;
      }

      ret = fenced_buffer_copy_storage_to_gpu_locked(fenced_buf);
      if(ret != PIPE_OK) {
         fenced_buffer_destroy_gpu_storage_locked(fenced_buf);
         goto done;
      }

      if(fenced_buf->mapcount) {
         debug_printf("warning: validating a buffer while it is still mapped\n");
      }
      else {
         fenced_buffer_destroy_cpu_storage_locked(fenced_buf);
      }
   }

   ret = pb_validate(fenced_buf->buffer, vl, flags);
   if (ret != PIPE_OK)
      goto done;

   fenced_buf->vl = vl;
   fenced_buf->validation_flags |= flags;

done:
   pipe_mutex_unlock(fenced_mgr->mutex);

   return ret;
}