From ec9d5e181e3ae30e00abed64762945beda6d3c0e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Sun, 30 Aug 2015 03:49:15 +0200 Subject: [PATCH] radeonsi: don't count IB space for states, just use an upper bound MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Since we don't put any resource descriptors in IBs, the space used by draw calls is quite small. Reviewed-by: Alex Deucher Acked-by: Christian König --- src/gallium/drivers/radeonsi/si_hw_context.c | 53 +++------------------------- src/gallium/drivers/radeonsi/si_pipe.h | 7 ---- 2 files changed, 5 insertions(+), 55 deletions(-) diff --git a/src/gallium/drivers/radeonsi/si_hw_context.c b/src/gallium/drivers/radeonsi/si_hw_context.c index 86d7140..dffc6df 100644 --- a/src/gallium/drivers/radeonsi/si_hw_context.c +++ b/src/gallium/drivers/radeonsi/si_hw_context.c @@ -35,8 +35,9 @@ void si_need_cs_space(struct si_context *ctx, unsigned num_dw, /* There are two memory usage counters in the winsys for all buffers * that have been added (cs_add_reloc) and two counters in the pipe * driver for those that haven't been added yet. - * */ - if (!ctx->b.ws->cs_memory_below_limit(ctx->b.rings.gfx.cs, ctx->b.vram, ctx->b.gtt)) { + */ + if (unlikely(!ctx->b.ws->cs_memory_below_limit(ctx->b.rings.gfx.cs, + ctx->b.vram, ctx->b.gtt))) { ctx->b.gtt = 0; ctx->b.vram = 0; ctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL); @@ -46,54 +47,10 @@ void si_need_cs_space(struct si_context *ctx, unsigned num_dw, ctx->b.vram = 0; /* If the CS is sufficiently large, don't count the space needed - * and just flush if there is less than 8096 dwords left. + * and just flush if there is not enough space left. */ - if (cs->max_dw >= 24 * 1024) { - if (cs->cdw > cs->max_dw - 8 * 1024) - ctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL); - return; - } - - /* The number of dwords we already used in the CS so far. */ - num_dw += cs->cdw; - - if (count_draw_in) { - unsigned mask = ctx->dirty_atoms; - - while (mask) - num_dw += ctx->atoms.array[u_bit_scan(&mask)]->num_dw; - - /* The number of dwords all the dirty states would take. */ - num_dw += si_pm4_dirty_dw(ctx); - - /* The upper-bound of how much a draw command would take. */ - num_dw += SI_MAX_DRAW_CS_DWORDS; - } - - /* Count in queries_suspend. */ - num_dw += ctx->b.num_cs_dw_nontimer_queries_suspend + - ctx->b.num_cs_dw_timer_queries_suspend; - - /* Count in streamout_end at the end of CS. */ - if (ctx->b.streamout.begin_emitted) { - num_dw += ctx->b.streamout.num_dw_for_end; - } - - /* Count in render_condition(NULL) at the end of CS. */ - if (ctx->b.predicate_drawing) { - num_dw += 3; - } - - /* Count in framebuffer cache flushes at the end of CS. */ - num_dw += ctx->atoms.s.cache_flush->num_dw; - - if (ctx->screen->b.trace_bo) - num_dw += SI_TRACE_CS_DWORDS * 2; - - /* Flush if there's not enough space. */ - if (num_dw > cs->max_dw) { + if (unlikely(cs->cdw > cs->max_dw - 2048)) ctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL); - } } void si_context_gfx_flush(void *context, unsigned flags, diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h index ba5dd1d..abdc900 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.h +++ b/src/gallium/drivers/radeonsi/si_pipe.h @@ -43,13 +43,6 @@ #define SI_RESTART_INDEX_UNKNOWN INT_MIN #define SI_NUM_SMOOTH_AA_SAMPLES 8 -#define SI_TRACE_CS_DWORDS 7 - -#define SI_MAX_DRAW_CS_DWORDS \ - (/*scratch:*/ 3 + /*derived prim state:*/ 3 + \ - /*draw regs:*/ 18 + /*draw packets:*/ 31 +\ - /*derived tess state:*/ 19) - /* Instruction cache. */ #define SI_CONTEXT_INV_ICACHE (R600_CONTEXT_PRIVATE_FLAG << 0) /* Cache used by scalar memory (SMEM) instructions. They also use TC -- 2.7.4