From 2b58bc44615c2ac61a0ff35cc69c8aae2b501083 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Thu, 28 Apr 2016 18:06:55 +0200 Subject: gallium/radeon: don't flush the GFX IB if DMA doesn't depend on it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Alex Deucher Reviewed-by: Nicolai Hähnle --- src/gallium/drivers/radeon/r600_pipe_common.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c index 6cbc92bb5f4..a5966d95d97 100644 --- a/src/gallium/drivers/radeon/r600_pipe_common.c +++ b/src/gallium/drivers/radeon/r600_pipe_common.c @@ -154,8 +154,14 @@ void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw, gtt += src->buf->size; } - /* Flush the GFX IB if it's not empty. */ - if (ctx->gfx.cs->cdw > ctx->initial_gfx_cs_size) + /* Flush the GFX IB if DMA depends on it. */ + if (ctx->gfx.cs->cdw > ctx->initial_gfx_cs_size && + ((dst && + ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, dst->buf, + RADEON_USAGE_READWRITE)) || + (src && + ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, src->buf, + RADEON_USAGE_WRITE)))) ctx->gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL); /* Flush if there's not enough space, or if the memory usage per IB -- cgit v1.2.3