From b45c3debe845a6832d9b6cfec6184b933754f6e9 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Tue, 7 May 2019 23:00:43 +0200 Subject: radeonsi/gfx10: keep track of whether NGG is used We always use NGG by default, except when tessellation is enabled with extreme geometry shader amplification. Acked-by: Bas Nieuwenhuizen --- src/gallium/drivers/radeonsi/si_debug_options.h | 1 + src/gallium/drivers/radeonsi/si_pipe.c | 3 +++ src/gallium/drivers/radeonsi/si_pipe.h | 1 + src/gallium/drivers/radeonsi/si_state_shaders.c | 27 ++++++++++++++++++++++++- 4 files changed, 31 insertions(+), 1 deletion(-) (limited to 'src/gallium/drivers/radeonsi') diff --git a/src/gallium/drivers/radeonsi/si_debug_options.h b/src/gallium/drivers/radeonsi/si_debug_options.h index d6cb3157632..9fdb0bc5dad 100644 --- a/src/gallium/drivers/radeonsi/si_debug_options.h +++ b/src/gallium/drivers/radeonsi/si_debug_options.h @@ -7,5 +7,6 @@ OPT_BOOL(debug_disassembly, false, "Report shader disassembly as part of driver OPT_BOOL(halt_shaders, false, "Halt shaders at the start (will hang)") OPT_BOOL(vs_fetch_always_opencode, false, "Always open code vertex fetches (less efficient, purely for testing)") OPT_BOOL(prim_restart_tri_strips_only, false, "Only enable primitive restart for triangle strips") +OPT_BOOL(disable_ngg, false, "Unconditionally disable NGG (gfx10+)") #undef OPT_BOOL diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c index a290d16b02d..9ea08c8fb26 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.c +++ b/src/gallium/drivers/radeonsi/si_pipe.c @@ -486,6 +486,9 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen, if (!sctx->border_color_map) goto fail; + if (sctx->chip_class >= GFX10) + sctx->ngg = !sscreen->options.disable_ngg; + /* Initialize context functions used by graphics and compute. */ if (sctx->chip_class >= GFX10) sctx->emit_cache_flush = gfx10_emit_cache_flush; diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h index 588de59e0cd..d7edc7be9ae 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.h +++ b/src/gallium/drivers/radeonsi/si_pipe.h @@ -1041,6 +1041,7 @@ struct si_context { bool gs_tri_strip_adj_fix:1; bool ls_vgpr_fix:1; bool prim_discard_cs_instancing:1; + bool ngg:1; int last_index_size; int last_base_vertex; int last_start_instance; diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c index 7a82126a0ad..a55a6d139d4 100644 --- a/src/gallium/drivers/radeonsi/si_state_shaders.c +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c @@ -2588,6 +2588,27 @@ static void si_update_tess_uses_prim_id(struct si_context *sctx) sctx->ps_shader.cso->info.uses_primid); } +static bool si_update_ngg(struct si_context *sctx) +{ + if (sctx->chip_class <= GFX9 || + sctx->screen->options.disable_ngg) + return false; + + bool new_ngg = true; + + /* EN_MAX_VERT_OUT_PER_GS_INSTANCE does not work with tesselation. */ + if (sctx->gs_shader.cso && sctx->tes_shader.cso && + sctx->gs_shader.cso->gs_num_invocations * sctx->gs_shader.cso->gs_max_out_vertices > 256) + new_ngg = false; + + if (new_ngg != sctx->ngg) { + sctx->ngg = new_ngg; + sctx->last_rast_prim = -1; /* reset this so that it gets updated */ + return true; + } + return false; +} + static void si_bind_gs_shader(struct pipe_context *ctx, void *state) { struct si_context *sctx = (struct si_context *)ctx; @@ -2595,6 +2616,7 @@ static void si_bind_gs_shader(struct pipe_context *ctx, void *state) struct si_shader *old_hw_vs_variant = si_get_vs_state(sctx); struct si_shader_selector *sel = state; bool enable_changed = !!sctx->gs_shader.cso != !!sel; + bool ngg_changed; if (sctx->gs_shader.cso == sel) return; @@ -2606,8 +2628,10 @@ static void si_bind_gs_shader(struct pipe_context *ctx, void *state) si_update_common_shader_state(sctx); sctx->last_rast_prim = -1; /* reset this so that it gets updated */ - if (enable_changed) { + ngg_changed = si_update_ngg(sctx); + if (ngg_changed || enable_changed) si_shader_change_notify(sctx); + if (enable_changed) { if (sctx->ia_multi_vgt_param_key.u.uses_tess) si_update_tess_uses_prim_id(sctx); } @@ -2659,6 +2683,7 @@ static void si_bind_tes_shader(struct pipe_context *ctx, void *state) sctx->last_rast_prim = -1; /* reset this so that it gets updated */ if (enable_changed) { + si_update_ngg(sctx); si_shader_change_notify(sctx); sctx->last_tes_sh_base = -1; /* invalidate derived tess state */ } -- cgit v1.2.3