2016-06-27 14:44:15 +01:00
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/*
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* Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Rob Clark <robclark@freedesktop.org>
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*/
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#include "util/hash_table.h"
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#include "util/set.h"
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#include "util/list.h"
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#include "util/u_string.h"
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#include "freedreno_batch.h"
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#include "freedreno_batch_cache.h"
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#include "freedreno_context.h"
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#include "freedreno_resource.h"
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/* Overview:
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*
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* The batch cache provides lookup for mapping pipe_framebuffer_state
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* to a batch.
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*
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* It does this via hashtable, with key that roughly matches the
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* pipe_framebuffer_state, as described below.
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*
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* Batch Cache hashtable key:
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*
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* To serialize the key, and to avoid dealing with holding a reference to
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* pipe_surface's (which hold a reference to pipe_resource and complicate
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* the whole refcnting thing), the key is variable length and inline's the
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* pertinent details of the pipe_surface.
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*
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* Batch:
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*
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* Each batch needs to hold a reference to each resource it depends on (ie.
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* anything that needs a mem2gmem). And a weak reference to resources it
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* renders to. (If both src[n] and dst[n] are not NULL then they are the
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* same.)
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*
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* When a resource is destroyed, we need to remove entries in the batch
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* cache that reference the resource, to avoid dangling pointer issues.
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* So each resource holds a hashset of batches which have reference them
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* in their hashtable key.
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*
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* When a batch has weak reference to no more resources (ie. all the
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* surfaces it rendered to are destroyed) the batch can be destroyed.
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* Could happen in an app that renders and never uses the result. More
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* common scenario, I think, will be that some, but not all, of the
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* surfaces are destroyed before the batch is submitted.
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*
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* If (for example), batch writes to zsbuf but that surface is destroyed
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* before batch is submitted, we can skip gmem2mem (but still need to
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* alloc gmem space as before. If the batch depended on previous contents
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* of that surface, it would be holding a reference so the surface would
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* not have been destroyed.
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*/
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struct key {
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uint32_t width, height, layers;
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uint16_t samples, num_surfs;
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struct fd_context *ctx;
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struct {
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struct pipe_resource *texture;
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union pipe_surface_desc u;
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uint16_t pos, format;
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} surf[0];
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};
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static struct key *
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key_alloc(unsigned num_surfs)
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{
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struct key *key =
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CALLOC_VARIANT_LENGTH_STRUCT(key, sizeof(key->surf[0]) * num_surfs);
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return key;
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}
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static uint32_t
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key_hash(const void *_key)
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{
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const struct key *key = _key;
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uint32_t hash = _mesa_fnv32_1a_offset_bias;
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hash = _mesa_fnv32_1a_accumulate_block(hash, key, offsetof(struct key, surf[0]));
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hash = _mesa_fnv32_1a_accumulate_block(hash, key->surf, sizeof(key->surf[0]) * key->num_surfs);
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return hash;
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}
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static bool
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key_equals(const void *_a, const void *_b)
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{
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const struct key *a = _a;
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const struct key *b = _b;
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return (memcmp(a, b, offsetof(struct key, surf[0])) == 0) &&
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(memcmp(a->surf, b->surf, sizeof(a->surf[0]) * a->num_surfs) == 0);
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}
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void
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fd_bc_init(struct fd_batch_cache *cache)
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{
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cache->ht = _mesa_hash_table_create(NULL, key_hash, key_equals);
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}
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void
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fd_bc_fini(struct fd_batch_cache *cache)
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{
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_mesa_hash_table_destroy(cache->ht, NULL);
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}
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2018-07-17 14:40:23 +01:00
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static void
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bc_flush(struct fd_batch_cache *cache, struct fd_context *ctx, bool deferred)
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2016-06-27 14:44:15 +01:00
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{
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2018-07-17 14:40:23 +01:00
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/* fd_batch_flush() (and fd_batch_add_dep() which calls it indirectly)
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* can cause batches to be unref'd and freed under our feet, so grab
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* a reference to all the batches we need up-front.
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*/
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struct fd_batch *batches[ARRAY_SIZE(cache->batches)] = {0};
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struct fd_batch *batch;
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unsigned n = 0;
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2016-06-27 14:44:15 +01:00
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2018-07-17 14:40:23 +01:00
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fd_context_lock(ctx);
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2016-07-19 23:24:57 +01:00
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2018-07-17 14:40:23 +01:00
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foreach_batch(batch, cache, cache->batch_mask) {
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2016-06-27 14:44:15 +01:00
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if (batch->ctx == ctx) {
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2018-07-17 14:40:23 +01:00
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fd_batch_reference_locked(&batches[n++], batch);
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2016-06-27 14:44:15 +01:00
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}
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}
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2018-07-17 14:40:23 +01:00
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if (deferred) {
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2018-09-03 21:07:17 +01:00
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struct fd_batch *current_batch = fd_context_batch(ctx);
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2018-07-17 14:40:23 +01:00
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for (unsigned i = 0; i < n; i++) {
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2018-09-03 21:07:17 +01:00
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if (batches[i] && (batches[i]->ctx == ctx) &&
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(batches[i] != current_batch)) {
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2018-07-17 14:40:23 +01:00
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fd_batch_add_dep(current_batch, batches[i]);
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}
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}
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fd_context_unlock(ctx);
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} else {
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fd_context_unlock(ctx);
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2016-07-19 23:24:57 +01:00
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2018-07-17 14:40:23 +01:00
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for (unsigned i = 0; i < n; i++) {
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fd_batch_flush(batches[i], false, false);
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}
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}
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for (unsigned i = 0; i < n; i++) {
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fd_batch_reference(&batches[i], NULL);
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2016-07-13 14:49:53 +01:00
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}
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2016-06-27 14:44:15 +01:00
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}
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2018-07-17 14:40:23 +01:00
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void
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fd_bc_flush(struct fd_batch_cache *cache, struct fd_context *ctx)
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{
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bc_flush(cache, ctx, false);
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}
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2017-11-19 16:42:25 +00:00
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/* deferred flush doesn't actually flush, but it marks every other
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* batch associated with the context as dependent on the current
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* batch. So when the current batch gets flushed, all other batches
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* that came before also get flushed.
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*/
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void
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fd_bc_flush_deferred(struct fd_batch_cache *cache, struct fd_context *ctx)
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{
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2018-07-17 14:40:23 +01:00
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bc_flush(cache, ctx, true);
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2017-11-19 16:42:25 +00:00
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}
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2016-06-27 14:44:15 +01:00
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void
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fd_bc_invalidate_context(struct fd_context *ctx)
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{
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struct fd_batch_cache *cache = &ctx->screen->batch_cache;
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struct fd_batch *batch;
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2017-03-05 01:12:30 +00:00
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mtx_lock(&ctx->screen->lock);
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2016-07-19 23:24:57 +01:00
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2016-06-27 14:44:15 +01:00
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foreach_batch(batch, cache, cache->batch_mask) {
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2016-07-19 23:24:57 +01:00
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if (batch->ctx == ctx)
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freedreno: batch cache doesn't hold a ref to batch
The cache doesn't hold a (strong) reference to the batch. So we
shouldn't be trying to drop a reference, as that leads to:
#0 0x0000ffffbecb37a0 in raise () from /lib64/libc.so.6
#1 0x0000ffffbeca159c in abort () from /lib64/libc.so.6
#2 0x0000ffffbecacf48 in __assert_fail_base () from /lib64/libc.so.6
#3 0x0000ffffbecacfa8 in __assert_fail () from /lib64/libc.so.6
#4 0x0000ffffbd28def0 in pipe_reference_described (ptr=0x4f47130, reference=0x0, get_desc=0xffffbd2e0f08 <__fd_batch_describe>) at ../src/gallium/auxiliary/util/u_inlines.h:88
#5 0x0000ffffbd28e188 in fd_batch_reference_locked (ptr=0x4f40de0, batch=0x0) at ../src/gallium/drivers/freedreno/freedreno_batch.h:258
#6 0x0000ffffbd28e9a8 in fd_bc_invalidate_resource (rsc=0x4f40ca0, destroy=true) at ../src/gallium/drivers/freedreno/freedreno_batch_cache.c:244
#7 0x0000ffffbd293778 in fd_resource_destroy (pscreen=0xedc170, prsc=0x4f40ca0) at ../src/gallium/drivers/freedreno/freedreno_resource.c:644
#8 0x0000ffffbd922674 in u_transfer_helper_resource_destroy (pscreen=0xedc170, prsc=0x4f40ca0) at ../src/gallium/auxiliary/util/u_transfer_helper.c:144
#9 0x0000ffffbd29527c in pipe_resource_reference (ptr=0x4f455d8, tex=0x0) at ../src/gallium/auxiliary/util/u_inlines.h:144
#10 0x0000ffffbd29548c in fd_surface_destroy (pctx=0x1012720, psurf=0x4f455d0) at ../src/gallium/drivers/freedreno/freedreno_surface.c:78
#11 0x0000ffffbd1f9c48 in pipe_surface_reference (ptr=0x4f471d0, surf=0x0) at ../src/gallium/auxiliary/util/u_inlines.h:113
#12 0x0000ffffbd1f9ef4 in util_copy_framebuffer_state (dst=0x4f471c8, src=0x0) at ../src/gallium/auxiliary/util/u_framebuffer.c:114
#13 0x0000ffffbd2e0e30 in __fd_batch_destroy (batch=0x4f47130) at ../src/gallium/drivers/freedreno/freedreno_batch.c:225
#14 0x0000ffffbd28e1b0 in fd_batch_reference_locked (ptr=0xfffffffff010, batch=0x0) at ../src/gallium/drivers/freedreno/freedreno_batch.h:262
#15 0x0000ffffbd28e6b0 in fd_bc_invalidate_context (ctx=0x1012720) at ../src/gallium/drivers/freedreno/freedreno_batch_cache.c:190
#16 0x0000ffffbd2e2b6c in fd_context_destroy (pctx=0x1012720) at ../src/gallium/drivers/freedreno/freedreno_context.c:139
#17 0x0000ffffbd2c3280 in fd5_context_destroy (pctx=0x1012720) at ../src/gallium/drivers/freedreno/a5xx/fd5_context.c:56
#18 0x0000ffffbd5b7a8c in st_destroy_context_priv (st=0xfd72f0, destroy_pipe=true) at ../src/mesa/state_tracker/st_context.c:281
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-05-08 18:38:18 +01:00
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fd_bc_invalidate_batch(batch, true);
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2016-06-27 14:44:15 +01:00
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}
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2016-07-19 23:24:57 +01:00
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2017-03-05 01:32:06 +00:00
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mtx_unlock(&ctx->screen->lock);
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2016-06-27 14:44:15 +01:00
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}
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2018-07-17 14:42:27 +01:00
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/**
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* Note that when batch is flushed, it needs to remain in the cache so
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* that fd_bc_invalidate_resource() can work.. otherwise we can have
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* the case where a rsc is destroyed while a batch still has a dangling
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* reference to it.
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*
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* Note that the cmdstream (or, after the SUBMIT ioctl, the kernel)
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* would have a reference to the underlying bo, so it is ok for the
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* rsc to be destroyed before the batch.
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*/
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2016-06-27 14:44:15 +01:00
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void
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2018-07-17 14:42:27 +01:00
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fd_bc_invalidate_batch(struct fd_batch *batch, bool remove)
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2016-06-27 14:44:15 +01:00
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{
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2016-07-19 23:24:57 +01:00
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if (!batch)
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return;
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2016-06-27 14:44:15 +01:00
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struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
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struct key *key = (struct key *)batch->key;
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2018-07-17 14:42:27 +01:00
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fd_context_assert_locked(batch->ctx);
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2016-07-19 23:24:57 +01:00
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2018-07-17 14:42:27 +01:00
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if (remove) {
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2016-06-27 14:44:15 +01:00
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cache->batches[batch->idx] = NULL;
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cache->batch_mask &= ~(1 << batch->idx);
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}
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if (!key)
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return;
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DBG("%p: key=%p", batch, batch->key);
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for (unsigned idx = 0; idx < key->num_surfs; idx++) {
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struct fd_resource *rsc = fd_resource(key->surf[idx].texture);
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rsc->bc_batch_mask &= ~(1 << batch->idx);
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}
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struct hash_entry *entry =
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_mesa_hash_table_search_pre_hashed(cache->ht, batch->hash, key);
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_mesa_hash_table_remove(cache->ht, entry);
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batch->key = NULL;
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free(key);
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}
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void
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fd_bc_invalidate_resource(struct fd_resource *rsc, bool destroy)
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{
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2017-12-04 14:02:07 +00:00
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struct fd_screen *screen = fd_screen(rsc->base.screen);
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2016-07-19 23:24:57 +01:00
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struct fd_batch *batch;
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2017-03-05 01:12:30 +00:00
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mtx_lock(&screen->lock);
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2016-06-27 14:44:15 +01:00
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if (destroy) {
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foreach_batch(batch, &screen->batch_cache, rsc->batch_mask) {
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struct set_entry *entry = _mesa_set_search(batch->resources, rsc);
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_mesa_set_remove(batch->resources, entry);
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}
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rsc->batch_mask = 0;
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2016-07-19 23:24:57 +01:00
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fd_batch_reference_locked(&rsc->write_batch, NULL);
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2016-06-27 14:44:15 +01:00
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}
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foreach_batch(batch, &screen->batch_cache, rsc->bc_batch_mask)
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fd_bc_invalidate_batch(batch, false);
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rsc->bc_batch_mask = 0;
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2016-07-19 23:24:57 +01:00
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2017-03-05 01:32:06 +00:00
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mtx_unlock(&screen->lock);
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2016-06-27 14:44:15 +01:00
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}
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struct fd_batch *
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fd_bc_alloc_batch(struct fd_batch_cache *cache, struct fd_context *ctx)
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{
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struct fd_batch *batch;
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uint32_t idx;
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2017-03-05 01:12:30 +00:00
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mtx_lock(&ctx->screen->lock);
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2016-07-19 23:24:57 +01:00
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2016-06-27 14:44:15 +01:00
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while ((idx = ffs(~cache->batch_mask)) == 0) {
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#if 0
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|
|
for (unsigned i = 0; i < ARRAY_SIZE(cache->batches); i++) {
|
|
|
|
batch = cache->batches[i];
|
|
|
|
debug_printf("%d: needs_flush=%d, depends:", batch->idx, batch->needs_flush);
|
|
|
|
struct set_entry *entry;
|
|
|
|
set_foreach(batch->dependencies, entry) {
|
|
|
|
struct fd_batch *dep = (struct fd_batch *)entry->key;
|
|
|
|
debug_printf(" %d", dep->idx);
|
|
|
|
}
|
|
|
|
debug_printf("\n");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* TODO: is LRU the better policy? Or perhaps the batch that
|
|
|
|
* depends on the fewest other batches?
|
|
|
|
*/
|
|
|
|
struct fd_batch *flush_batch = NULL;
|
|
|
|
for (unsigned i = 0; i < ARRAY_SIZE(cache->batches); i++) {
|
|
|
|
if ((cache->batches[i] == ctx->batch) ||
|
|
|
|
!cache->batches[i]->needs_flush)
|
|
|
|
continue;
|
|
|
|
if (!flush_batch || (cache->batches[i]->seqno < flush_batch->seqno))
|
2016-07-19 23:24:57 +01:00
|
|
|
fd_batch_reference_locked(&flush_batch, cache->batches[i]);
|
2016-06-27 14:44:15 +01:00
|
|
|
}
|
2016-07-19 23:24:57 +01:00
|
|
|
|
|
|
|
/* we can drop lock temporarily here, since we hold a ref,
|
|
|
|
* flush_batch won't disappear under us.
|
|
|
|
*/
|
2017-03-05 01:32:06 +00:00
|
|
|
mtx_unlock(&ctx->screen->lock);
|
2016-06-27 14:44:15 +01:00
|
|
|
DBG("%p: too many batches! flush forced!", flush_batch);
|
2017-11-19 15:36:19 +00:00
|
|
|
fd_batch_flush(flush_batch, true, false);
|
2017-03-05 01:12:30 +00:00
|
|
|
mtx_lock(&ctx->screen->lock);
|
2016-06-27 14:44:15 +01:00
|
|
|
|
|
|
|
/* While the resources get cleaned up automatically, the flush_batch
|
|
|
|
* doesn't get removed from the dependencies of other batches, so
|
|
|
|
* it won't be unref'd and will remain in the table.
|
|
|
|
*
|
|
|
|
* TODO maybe keep a bitmask of batches that depend on me, to make
|
|
|
|
* this easier:
|
|
|
|
*/
|
|
|
|
for (unsigned i = 0; i < ARRAY_SIZE(cache->batches); i++) {
|
|
|
|
struct fd_batch *other = cache->batches[i];
|
|
|
|
if (!other)
|
|
|
|
continue;
|
|
|
|
if (other->dependents_mask & (1 << flush_batch->idx)) {
|
|
|
|
other->dependents_mask &= ~(1 << flush_batch->idx);
|
|
|
|
struct fd_batch *ref = flush_batch;
|
2016-07-19 23:24:57 +01:00
|
|
|
fd_batch_reference_locked(&ref, NULL);
|
2016-06-27 14:44:15 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-07-19 23:24:57 +01:00
|
|
|
fd_batch_reference_locked(&flush_batch, NULL);
|
2016-06-27 14:44:15 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
idx--; /* bit zero returns 1 for ffs() */
|
|
|
|
|
2017-11-24 15:37:22 +00:00
|
|
|
batch = fd_batch_create(ctx, false);
|
2016-06-27 14:44:15 +01:00
|
|
|
if (!batch)
|
2016-07-19 23:24:57 +01:00
|
|
|
goto out;
|
2016-06-27 14:44:15 +01:00
|
|
|
|
|
|
|
batch->seqno = cache->cnt++;
|
|
|
|
batch->idx = idx;
|
|
|
|
cache->batch_mask |= (1 << idx);
|
|
|
|
|
|
|
|
debug_assert(cache->batches[idx] == NULL);
|
|
|
|
cache->batches[idx] = batch;
|
|
|
|
|
2016-07-19 23:24:57 +01:00
|
|
|
out:
|
2017-03-05 01:32:06 +00:00
|
|
|
mtx_unlock(&ctx->screen->lock);
|
2016-07-19 23:24:57 +01:00
|
|
|
|
2016-06-27 14:44:15 +01:00
|
|
|
return batch;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct fd_batch *
|
|
|
|
batch_from_key(struct fd_batch_cache *cache, struct key *key,
|
|
|
|
struct fd_context *ctx)
|
|
|
|
{
|
|
|
|
struct fd_batch *batch = NULL;
|
|
|
|
uint32_t hash = key_hash(key);
|
|
|
|
struct hash_entry *entry =
|
|
|
|
_mesa_hash_table_search_pre_hashed(cache->ht, hash, key);
|
|
|
|
|
|
|
|
if (entry) {
|
|
|
|
free(key);
|
|
|
|
fd_batch_reference(&batch, (struct fd_batch *)entry->data);
|
|
|
|
return batch;
|
|
|
|
}
|
|
|
|
|
|
|
|
batch = fd_bc_alloc_batch(cache, ctx);
|
|
|
|
#ifdef DEBUG
|
|
|
|
DBG("%p: hash=0x%08x, %ux%u, %u layers, %u samples", batch, hash,
|
|
|
|
key->width, key->height, key->layers, key->samples);
|
|
|
|
for (unsigned idx = 0; idx < key->num_surfs; idx++) {
|
|
|
|
DBG("%p: surf[%u]: %p (%s) (%u,%u / %u,%u,%u)", batch, key->surf[idx].pos,
|
|
|
|
key->surf[idx].texture, util_format_name(key->surf[idx].format),
|
|
|
|
key->surf[idx].u.buf.first_element, key->surf[idx].u.buf.last_element,
|
|
|
|
key->surf[idx].u.tex.first_layer, key->surf[idx].u.tex.last_layer,
|
|
|
|
key->surf[idx].u.tex.level);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
if (!batch)
|
|
|
|
return NULL;
|
|
|
|
|
2017-03-05 01:12:30 +00:00
|
|
|
mtx_lock(&ctx->screen->lock);
|
2016-07-19 23:24:57 +01:00
|
|
|
|
2016-06-27 14:44:15 +01:00
|
|
|
_mesa_hash_table_insert_pre_hashed(cache->ht, hash, key, batch);
|
|
|
|
batch->key = key;
|
|
|
|
batch->hash = hash;
|
|
|
|
|
|
|
|
for (unsigned idx = 0; idx < key->num_surfs; idx++) {
|
|
|
|
struct fd_resource *rsc = fd_resource(key->surf[idx].texture);
|
|
|
|
rsc->bc_batch_mask = (1 << batch->idx);
|
|
|
|
}
|
|
|
|
|
2017-03-05 01:32:06 +00:00
|
|
|
mtx_unlock(&ctx->screen->lock);
|
2016-07-19 23:24:57 +01:00
|
|
|
|
2016-06-27 14:44:15 +01:00
|
|
|
return batch;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
key_surf(struct key *key, unsigned idx, unsigned pos, struct pipe_surface *psurf)
|
|
|
|
{
|
|
|
|
key->surf[idx].texture = psurf->texture;
|
|
|
|
key->surf[idx].u = psurf->u;
|
|
|
|
key->surf[idx].pos = pos;
|
|
|
|
key->surf[idx].format = psurf->format;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct fd_batch *
|
|
|
|
fd_batch_from_fb(struct fd_batch_cache *cache, struct fd_context *ctx,
|
|
|
|
const struct pipe_framebuffer_state *pfb)
|
|
|
|
{
|
|
|
|
unsigned idx = 0, n = pfb->nr_cbufs + (pfb->zsbuf ? 1 : 0);
|
|
|
|
struct key *key = key_alloc(n);
|
|
|
|
|
|
|
|
key->width = pfb->width;
|
|
|
|
key->height = pfb->height;
|
|
|
|
key->layers = pfb->layers;
|
2018-07-17 14:44:23 +01:00
|
|
|
key->samples = util_framebuffer_get_num_samples(pfb);
|
2016-06-27 14:44:15 +01:00
|
|
|
key->ctx = ctx;
|
|
|
|
|
|
|
|
if (pfb->zsbuf)
|
|
|
|
key_surf(key, idx++, 0, pfb->zsbuf);
|
|
|
|
|
|
|
|
for (unsigned i = 0; i < pfb->nr_cbufs; i++)
|
|
|
|
if (pfb->cbufs[i])
|
|
|
|
key_surf(key, idx++, i + 1, pfb->cbufs[i]);
|
|
|
|
|
|
|
|
key->num_surfs = idx;
|
|
|
|
|
|
|
|
return batch_from_key(cache, key, ctx);
|
|
|
|
}
|