text: /*
   * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
   *
   * 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.
   *
   * Authors:
   *    Rob Clark <robclark@freedesktop.org>
   */
  
  #ifndef FREEDRENO_BATCH_CACHE_H_
  #define FREEDRENO_BATCH_CACHE_H_
  
  #include "pipe/p_state.h"
  
  struct fd_resource;
  struct fd_batch;
  struct fd_context;
  
  struct hash_table;
  
  struct fd_batch_cache {
  	struct hash_table *ht;
  	unsigned cnt;
  
  	/* set of active batches.. there is an upper limit on the number of
  	 * in-flight batches, for two reasons:
  	 * 1) to avoid big spikes in number of batches in edge cases, such as
  	 *    game startup (ie, lots of texture uploads, but no usages yet of
  	 *    the textures), etc.
  	 * 2) so we can use a simple bitmask in fd_resource to track which
  	 *    batches have reference to the resource
  	 */
  	struct fd_batch *batches[32];
  	uint32_t batch_mask;
  };
  
  /* note: if batches get unref'd in the body of the loop, they are removed
   * from the various masks.. but since we copy the mask at the beginning of
   * the loop into _m, we need the &= at the end of the loop to make sure
   * we don't have stale bits in _m
   */
  #define foreach_batch(batch, cache, mask) \
  	for (uint32_t _m = (mask); _m && ((batch) = (cache)->batches[u_bit_scan(&_m)]); _m &= (mask))
  
  void fd_bc_init(struct fd_batch_cache *cache);
  void fd_bc_fini(struct fd_batch_cache *cache);
  
  void fd_bc_flush(struct fd_batch_cache *cache, struct fd_context *ctx);
  
  void fd_bc_invalidate_context(struct fd_context *ctx);
  void fd_bc_invalidate_batch(struct fd_batch *batch, bool destroy);
  void fd_bc_invalidate_resource(struct fd_resource *rsc, bool destroy);
  struct fd_batch * fd_bc_alloc_batch(struct fd_batch_cache *cache, struct fd_context *ctx);
  
  struct fd_batch * fd_batch_from_fb(struct fd_batch_cache *cache,
  		struct fd_context *ctx, const struct pipe_framebuffer_state *pfb);
  
  #endif /* FREEDRENO_BATCH_CACHE_H_ */
  