From: Marek Olšák Date: Thu, 13 Oct 2016 10:18:53 +0000 (+0200) Subject: radeonsi: add infrastr. for compiling optimized shader variants asynchronously X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d984a324bf8702adde68c006f1c3454233871e1c;p=mesa.git radeonsi: add infrastr. for compiling optimized shader variants asynchronously Tested-by: Edmondo Tommasina Reviewed-by: Nicolai Hähnle --- diff --git a/src/gallium/drivers/radeonsi/si_shader.h b/src/gallium/drivers/radeonsi/si_shader.h index 2ed0cb783ff..38aa361d496 100644 --- a/src/gallium/drivers/radeonsi/si_shader.h +++ b/src/gallium/drivers/radeonsi/si_shader.h @@ -435,6 +435,10 @@ struct si_shader_key { uint64_t inputs_to_copy; /* for fixed-func TCS */ } tcs; } mono; + + /* Optimization flags for asynchronous compilation only. */ + union { + } opt; }; struct si_shader_config { @@ -484,7 +488,10 @@ struct si_shader { struct r600_resource *bo; struct r600_resource *scratch_bo; struct si_shader_key key; + struct util_queue_fence optimized_ready; + bool compilation_failed; bool is_monolithic; + bool is_optimized; bool is_binary_shared; bool is_gs_copy_shader; diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c index 72d0518c6bd..00ccbbd53ab 100644 --- a/src/gallium/drivers/radeonsi/si_state_shaders.c +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c @@ -1015,33 +1015,73 @@ static inline void si_shader_selector_key(struct pipe_context *ctx, } } +static void si_build_shader_variant(void *job, int thread_index) +{ + struct si_shader *shader = (struct si_shader *)job; + struct si_shader_selector *sel = shader->selector; + struct si_screen *sscreen = sel->screen; + LLVMTargetMachineRef tm; + struct pipe_debug_callback *debug = &sel->debug; + int r; + + if (thread_index >= 0) { + assert(thread_index < ARRAY_SIZE(sscreen->tm)); + tm = sscreen->tm[thread_index]; + if (!debug->async) + debug = NULL; + } else { + tm = sel->tm; + } + + r = si_shader_create(sscreen, tm, shader, debug); + if (unlikely(r)) { + R600_ERR("Failed to build shader variant (type=%u) %d\n", + sel->type, r); + shader->compilation_failed = true; + return; + } + + if (sel->is_debug_context) { + FILE *f = open_memstream(&shader->shader_log, + &shader->shader_log_size); + if (f) { + si_shader_dump(sscreen, shader, NULL, sel->type, f); + fclose(f); + } + } + + si_shader_init_pm4_state(sscreen, shader); +} + /* Select the hw shader variant depending on the current state. */ static int si_shader_select_with_key(struct si_screen *sscreen, struct si_shader_ctx_state *state, struct si_shader_key *key, - LLVMTargetMachineRef tm, - struct pipe_debug_callback *debug, - bool wait, - bool is_debug_context) + int thread_index) { static const struct si_shader_key zeroed; struct si_shader_selector *sel = state->cso; struct si_shader *current = state->current; struct si_shader *iter, *shader = NULL; - int r; - +again: /* Check if we don't need to change anything. * This path is also used for most shaders that don't need multiple * variants, it will cost just a computation of the key and this * test. */ - if (likely(current && memcmp(¤t->key, key, sizeof(*key)) == 0)) + if (likely(current && + memcmp(¤t->key, key, sizeof(*key)) == 0 && + (!current->is_optimized || + util_queue_fence_is_signalled(¤t->optimized_ready)))) return 0; /* This must be done before the mutex is locked, because async GS * compilation calls this function too, and therefore must enter * the mutex first. + * + * Only wait if we are in a draw call. Don't wait if we are + * in a compiler thread. */ - if (wait) + if (thread_index < 0) util_queue_job_wait(&sel->ready); pipe_mutex_lock(sel->mutex); @@ -1051,6 +1091,22 @@ static int si_shader_select_with_key(struct si_screen *sscreen, /* Don't check the "current" shader. We checked it above. */ if (current != iter && memcmp(&iter->key, key, sizeof(*key)) == 0) { + /* If it's an optimized shader and its compilation has + * been started but isn't done, use the unoptimized + * shader so as not to cause a stall due to compilation. + */ + if (iter->is_optimized && + !util_queue_fence_is_signalled(&iter->optimized_ready)) { + memset(&key->opt, 0, sizeof(key->opt)); + pipe_mutex_unlock(sel->mutex); + goto again; + } + + if (iter->compilation_failed) { + pipe_mutex_unlock(sel->mutex); + return -1; /* skip the draw call */ + } + state->current = iter; pipe_mutex_unlock(sel->mutex); return 0; @@ -1065,31 +1121,21 @@ static int si_shader_select_with_key(struct si_screen *sscreen, } shader->selector = sel; shader->key = *key; + + /* Monolithic-only shaders don't make a distinction between optimized + * and unoptimized. */ shader->is_monolithic = !sel->main_shader_part || sel->main_shader_part->key.as_ls != key->as_ls || sel->main_shader_part->key.as_es != key->as_es || + memcmp(&key->opt, &zeroed.opt, sizeof(key->opt)) != 0 || memcmp(&key->mono, &zeroed.mono, sizeof(key->mono)) != 0; - r = si_shader_create(sscreen, tm, shader, debug); - if (unlikely(r)) { - R600_ERR("Failed to build shader variant (type=%u) %d\n", - sel->type, r); - FREE(shader); - pipe_mutex_unlock(sel->mutex); - return r; - } - - if (is_debug_context) { - FILE *f = open_memstream(&shader->shader_log, - &shader->shader_log_size); - if (f) { - si_shader_dump(sscreen, shader, NULL, sel->type, f); - fclose(f); - } - } - - si_shader_init_pm4_state(sscreen, shader); + shader->is_optimized = + !sscreen->use_monolithic_shaders && + memcmp(&key->opt, &zeroed.opt, sizeof(key->opt)) != 0; + if (shader->is_optimized) + util_queue_fence_init(&shader->optimized_ready); if (!sel->last_variant) { sel->first_variant = shader; @@ -1098,9 +1144,29 @@ static int si_shader_select_with_key(struct si_screen *sscreen, sel->last_variant->next_variant = shader; sel->last_variant = shader; } - state->current = shader; + + /* If it's an optimized shader, compile it asynchronously. */ + if (shader->is_optimized && + thread_index < 0) { + /* Compile it asynchronously. */ + util_queue_add_job(&sscreen->shader_compiler_queue, + shader, &shader->optimized_ready, + si_build_shader_variant, NULL); + + /* Use the default (unoptimized) shader for now. */ + memset(&key->opt, 0, sizeof(key->opt)); + pipe_mutex_unlock(sel->mutex); + goto again; + } + + assert(!shader->is_optimized); + si_build_shader_variant(shader, thread_index); + + if (!shader->compilation_failed) + state->current = shader; + pipe_mutex_unlock(sel->mutex); - return 0; + return shader->compilation_failed ? -1 : 0; } static int si_shader_select(struct pipe_context *ctx, @@ -1110,9 +1176,7 @@ static int si_shader_select(struct pipe_context *ctx, struct si_shader_key key; si_shader_selector_key(ctx, state->cso, &key); - return si_shader_select_with_key(sctx->screen, state, &key, - sctx->tm, &sctx->b.debug, true, - sctx->is_debug); + return si_shader_select_with_key(sctx->screen, state, &key, -1); } static void si_parse_next_shader_property(const struct tgsi_shader_info *info, @@ -1247,8 +1311,7 @@ void si_init_shader_selector_async(void *job, int thread_index) break; } - if (si_shader_select_with_key(sscreen, &state, &key, tm, debug, - false, sel->is_debug_context)) + if (si_shader_select_with_key(sscreen, &state, &key, thread_index)) fprintf(stderr, "radeonsi: can't create a monolithic shader\n"); } @@ -1524,6 +1587,11 @@ static void si_bind_ps_shader(struct pipe_context *ctx, void *state) static void si_delete_shader(struct si_context *sctx, struct si_shader *shader) { + if (shader->is_optimized) { + util_queue_job_wait(&shader->optimized_ready); + util_queue_fence_destroy(&shader->optimized_ready); + } + if (shader->pm4) { switch (shader->selector->type) { case PIPE_SHADER_VERTEX: