From 9113c9aa9be5626d4d12a794c70860097ae59c1f Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Thu, 13 Aug 2015 17:37:06 -0300 Subject: lib/igt_draw: break if we already wrote every pixel Due to the nature of accessing a tiled buffer in an untiled way, we used to loop through the whole buffer all the time. Add a small mechanism to just break in case we know we already wrote every pixel we should have written. On kms_frontbuffer_tracknig/fbc-2p-primscrn-pri-shrfb-draw-pwrite (with a 3200x1800 primary screen and a 1920x1080 secondary screen), I could reduce the runtime from ~7.53s to ~6.01s. Signed-off-by: Paulo Zanoni --- lib/igt_draw.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib/igt_draw.c') diff --git a/lib/igt_draw.c b/lib/igt_draw.c index 10187d8e..760bda8c 100644 --- a/lib/igt_draw.c +++ b/lib/igt_draw.c @@ -349,6 +349,7 @@ static void draw_rect_pwrite_tiled(int fd, struct buf_data *buf, int tmp_used = 0, tmp_size; bool flush_tmp = false; int tmp_start_pos = 0; + int pixels_written = 0; /* We didn't implement suport for the older tiling methods yet. */ igt_require(intel_gen(intel_get_drm_devid(fd)) >= 5); @@ -380,7 +381,11 @@ static void draw_rect_pwrite_tiled(int fd, struct buf_data *buf, gem_write(fd, buf->handle, tmp_start_pos, tmp, tmp_used * pixel_size); flush_tmp = false; + pixels_written += tmp_used; tmp_used = 0; + + if (pixels_written == rect->w * rect->h) + break; } } } -- cgit v1.2.3