[igt-dev] [PATCH i-g-t 1/2] tests/kms_cursor_crc: Separate hw and sw runs on tests

Petri Latvala petri.latvala at intel.com
Wed Aug 18 09:17:15 UTC 2021


On Tue, Aug 17, 2021 at 08:46:22PM +0300, Juha-Pekka Heikkila wrote:
> On 17.8.2021 18.59, Petri Latvala wrote:
> > On Tue, Aug 17, 2021 at 12:27:23PM +0300, Juha-Pekka Heikkila wrote:
> > > Reset display structure settings and commit them in before starting
> > > test in case some earlier test left tail.
> > > 
> > > Separate hw and sw test runs for optimizing test.
> > > 
> > > Simple cleanup.
> > > 
> > > Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
> > > ---
> > >   tests/kms_cursor_crc.c | 404 +++++++++++++++++++++++++----------------
> > >   1 file changed, 251 insertions(+), 153 deletions(-)
> > > 
> > > diff --git a/tests/kms_cursor_crc.c b/tests/kms_cursor_crc.c
> > > index a9bc3a745..f478ae08d 100644
> > > --- a/tests/kms_cursor_crc.c
> > > +++ b/tests/kms_cursor_crc.c
> > > @@ -46,10 +46,17 @@ IGT_TEST_DESCRIPTION(
> > >   #define DRM_CAP_CURSOR_HEIGHT 0x9
> > >   #endif
> > > +enum cursor_buffers {
> > > +	HWCURSORBUFFER,
> > > +	SWCOMPARISONBUFFER1,
> > > +	SWCOMPARISONBUFFER2,
> > > +	MAXCURSORBUFFER
> > > +};
> > > +
> > >   typedef struct {
> > >   	int drm_fd;
> > >   	igt_display_t display;
> > > -	struct igt_fb primary_fb[2];
> > > +	struct igt_fb primary_fb[MAXCURSORBUFFER];
> > >   	struct igt_fb fb;
> > >   	igt_output_t *output;
> > >   	enum pipe pipe;
> > > @@ -70,29 +77,40 @@ typedef struct {
> > >   #define TEST_DPMS (1<<0)
> > >   #define TEST_SUSPEND (1<<1)
> > > -#define HWCURSORBUFFER 0
> > > -#define SWCOMPARISONBUFFER 1
> > > +#define RED 1.0, 0.0, 0.0
> > > +#define GREEN 0.0, 1.0, 0.0
> > > +#define BLUE 0.0, 0.0, 1.0
> > > +#define WHITE 1.0, 1.0, 1.0
> > > +
> > > +typedef struct {
> > > +	int x;
> > > +	int y;
> > > +	int width;
> > > +	int height;
> > > +} cursorarea;
> > > -static void draw_cursor(cairo_t *cr, int x, int y, int cw, int ch, double a)
> > > +static void draw_cursor(cairo_t *cr, cursorarea *cursor)
> > >   {
> > >   	int wl, wr, ht, hb;
> > >   	/* deal with odd cursor width/height */
> > > -	wl = cw / 2;
> > > -	wr = (cw + 1) / 2;
> > > -	ht = ch / 2;
> > > -	hb = (ch + 1) / 2;
> > > +	wl = cursor->width / 2;
> > > +	wr = (cursor->width + 1) / 2;
> > > +	ht = cursor->height / 2;
> > > +	hb = (cursor->height + 1) / 2;
> > >   	/* Cairo doesn't like to be fed numbers that are too wild */
> > > -	if ((x < SHRT_MIN) || (x > SHRT_MAX) || (y < SHRT_MIN) || (y > SHRT_MAX))
> > > +	if ((cursor->x < SHRT_MIN) || (cursor->x > SHRT_MAX) ||
> > > +	    (cursor->y < SHRT_MIN) || (cursor->y > SHRT_MAX))
> > >   		return;
> > > +
> > >   	cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
> > >   	cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
> > >   	/* 4 color rectangles in the corners, RGBY */
> > > -	igt_paint_color_alpha(cr, x,      y,      wl, ht, 1.0, 0.0, 0.0, a);
> > > -	igt_paint_color_alpha(cr, x + wl, y,      wr, ht, 0.0, 1.0, 0.0, a);
> > > -	igt_paint_color_alpha(cr, x,      y + ht, wl, hb, 0.0, 0.0, 1.0, a);
> > > -	igt_paint_color_alpha(cr, x + wl, y + ht, wr, hb, 1.0, 1.0, 1.0, a);
> > > +	igt_paint_color(cr, cursor->x, cursor->y, wl, ht, RED);
> > > +	igt_paint_color(cr, cursor->x + wl, cursor->y, wr, ht, GREEN);
> > > +	igt_paint_color(cr, cursor->x, cursor->y + ht, wl, hb, BLUE);
> > > +	igt_paint_color(cr, cursor->x + wl, cursor->y + ht, wr, hb, WHITE);
> > >   }
> > >   static void cursor_enable(data_t *data)
> > > @@ -144,7 +162,7 @@ static bool cursor_visible(data_t *data, int x, int y)
> > >   	return true;
> > >   }
> > > -static void restore_image(data_t *data, uint32_t buffer)
> > > +static void restore_image(data_t *data, uint32_t buffer, cursorarea *cursor)
> > >   {
> > >   	cairo_t *cr;
> > > @@ -153,80 +171,84 @@ static void restore_image(data_t *data, uint32_t buffer)
> > >   	cairo_set_source_surface(cr, data->surface, 0, 0);
> > >   	cairo_rectangle(cr, 0, 0, data->screenw, data->screenh);
> > >   	cairo_fill(cr);
> > > +
> > > +	if (cursor)
> > > +		draw_cursor(cr, cursor);
> > > +
> > >   	igt_put_cairo_ctx(cr);
> > >   }
> > > -static void do_single_test(data_t *data, int x, int y)
> > > +static void do_single_test(data_t *data, int x, int y, bool hw_test,
> > > +			   igt_crc_t *hwcrc)
> > >   {
> > >   	igt_display_t *display = &data->display;
> > >   	igt_pipe_crc_t *pipe_crc = data->pipe_crc;
> > > -	igt_crc_t crc, ref_crc;
> > > -	cairo_t *cr;
> > > -	int ret = 0;
> > > +	igt_crc_t crc;
> > > +	int ret = 0, swbufidx;
> > >   	igt_print_activity();
> > > -	/* Hardware test */
> > > -	igt_plane_set_position(data->cursor, x, y);
> > > -	cursor_enable(data);
> > > +	if (hw_test) {
> > > +		/* Hardware test */
> > > +		igt_plane_set_position(data->cursor, x, y);
> > > -	if (chv_cursor_broken(data, x) && cursor_visible(data, x, y)) {
> > > -		ret = igt_display_try_commit2(display, COMMIT_LEGACY);
> > > -		igt_assert_eq(ret, -EINVAL);
> > > -		igt_plane_set_position(data->cursor, 0, y);
> > > -		return;
> > > -	}
> > > +		if (chv_cursor_broken(data, x) && cursor_visible(data, x, y)) {
> > > +			ret = igt_display_try_commit2(display, COMMIT_LEGACY);
> > > +			igt_assert_eq(ret, -EINVAL);
> > > +			igt_plane_set_position(data->cursor, 0, y);
> > > +			return;
> > > +		}
> > > -	igt_plane_set_fb(data->primary, &data->primary_fb[HWCURSORBUFFER]);
> > > -	igt_display_commit(display);
> > > +		igt_display_commit(display);
> > > -	/* Extra vblank wait is because nonblocking cursor ioctl */
> > > -	igt_wait_for_vblank(data->drm_fd,
> > > -			    display->pipes[data->pipe].crtc_offset);
> > > +		/* Extra vblank wait is because nonblocking cursor ioctl */
> > > +		igt_wait_for_vblank(data->drm_fd,
> > > +				display->pipes[data->pipe].crtc_offset);
> > > -	igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &crc);
> > > -	restore_image(data, SWCOMPARISONBUFFER);
> > > +		igt_pipe_crc_get_current(data->drm_fd, pipe_crc, hwcrc);
> > > -	if (data->flags & (TEST_DPMS | TEST_SUSPEND)) {
> > > -		igt_crc_t crc_after;
> > > -		/*
> > > -		 * stop/start crc to avoid dmesg notifications about userspace
> > > -		 * reading too slow.
> > > -		 */
> > > -		igt_pipe_crc_stop(pipe_crc);
> > > -
> > > -		if (data->flags & TEST_DPMS) {
> > > -			igt_debug("dpms off/on cycle\n");
> > > -			kmstest_set_connector_dpms(data->drm_fd,
> > > -						   data->output->config.connector,
> > > -						   DRM_MODE_DPMS_OFF);
> > > -			kmstest_set_connector_dpms(data->drm_fd,
> > > -						   data->output->config.connector,
> > > -						   DRM_MODE_DPMS_ON);
> > > +		if (data->flags & (TEST_DPMS | TEST_SUSPEND)) {
> > > +			igt_crc_t crc_after;
> > > +			/*
> > > +			* stop/start crc to avoid dmesg notifications about userspace
> > > +			* reading too slow.
> > > +			*/
> > > +			igt_pipe_crc_stop(pipe_crc);
> > > +
> > > +			if (data->flags & TEST_DPMS) {
> > > +				igt_debug("dpms off/on cycle\n");
> > > +				kmstest_set_connector_dpms(data->drm_fd,
> > > +							data->output->config.connector,
> > > +							DRM_MODE_DPMS_OFF);
> > > +				kmstest_set_connector_dpms(data->drm_fd,
> > > +							data->output->config.connector,
> > > +							DRM_MODE_DPMS_ON);
> > > +			}
> > > +
> > > +			if (data->flags & TEST_SUSPEND)
> > > +				igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
> > > +							SUSPEND_TEST_NONE);
> > > +
> > > +			igt_pipe_crc_start(pipe_crc);
> > > +			igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &crc_after);
> > > +			igt_assert_crc_equal(hwcrc, &crc_after);
> > >   		}
> > > +	} else {
> > > +		/* Now render the same in software and collect crc */
> > > +		swbufidx = (data->primary->drm_plane->fb_id ==
> > > +			    data->primary_fb[SWCOMPARISONBUFFER1].fb_id) ?
> > > +			    SWCOMPARISONBUFFER2 : SWCOMPARISONBUFFER1;
> > > -		if (data->flags & TEST_SUSPEND)
> > > -			igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
> > > -						      SUSPEND_TEST_NONE);
> > > -
> > > -		igt_pipe_crc_start(pipe_crc);
> > > -		igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &crc_after);
> > > -		igt_assert_crc_equal(&crc, &crc_after);
> > > -	}
> > > -
> > > -	/* Now render the same in software and collect crc */
> > > -	cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > -	draw_cursor(cr, x, y, data->curw, data->curh, 1.0);
> > > -	igt_put_cairo_ctx(cr);
> > > -	igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > -	cursor_disable(data);
> > > -	igt_display_commit(display);
> > > +		restore_image(data, swbufidx, &((cursorarea){x, y, data->curw, data->curh}));
> > > +		igt_plane_set_fb(data->primary, &data->primary_fb[swbufidx]);
> > > -	igt_wait_for_vblank(data->drm_fd,
> > > -			display->pipes[data->pipe].crtc_offset);
> > > +		igt_display_commit(display);
> > > +		igt_wait_for_vblank(data->drm_fd,
> > > +				display->pipes[data->pipe].crtc_offset);
> > > -	igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &ref_crc);
> > > -	igt_assert_crc_equal(&crc, &ref_crc);
> > > +		igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &crc);
> > > +		igt_assert_crc_equal(&crc, hwcrc);
> > > +	}
> > >   }
> > >   static void do_fail_test(data_t *data, int x, int y, int expect)
> > > @@ -248,70 +270,112 @@ static void do_fail_test(data_t *data, int x, int y, int expect)
> > >   	igt_assert_eq(ret, expect);
> > >   }
> > > -static void do_test(data_t *data,
> > > -		    int left, int right, int top, int bottom)
> > > +static void do_test(data_t *data, const cursorarea *coords, igt_crc_t crc[4],
> > > +		    bool hwtest)
> > >   {
> > > -	do_single_test(data, left, top);
> > > -	do_single_test(data, right, top);
> > > -	do_single_test(data, right, bottom);
> > > -	do_single_test(data, left, bottom);
> > > +	do_single_test(data, coords->x, coords->width, hwtest, &crc[0]);
> > > +	do_single_test(data, coords->y, coords->width, hwtest, &crc[1]);
> > > +	do_single_test(data, coords->y, coords->height, hwtest, &crc[2]);
> > > +	do_single_test(data, coords->x, coords->height, hwtest, &crc[3]);
> > >   }
> > >   static void test_crc_onscreen(data_t *data)
> > >   {
> > > -	int left = data->left;
> > > -	int right = data->right;
> > > -	int top = data->top;
> > > -	int bottom = data->bottom;
> > > -	int cursor_w = data->curw;
> > > -	int cursor_h = data->curh;
> > > -
> > > -	/* fully inside  */
> > > -	do_test(data, left, right, top, bottom);
> > > -
> > > -	/* 2 pixels inside */
> > > -	do_test(data, left - (cursor_w-2), right + (cursor_w-2), top               , bottom               );
> > > -	do_test(data, left               , right               , top - (cursor_h-2), bottom + (cursor_h-2));
> > > -	do_test(data, left - (cursor_w-2), right + (cursor_w-2), top - (cursor_h-2), bottom + (cursor_h-2));
> > > -
> > > -	/* 1 pixel inside */
> > > -	do_test(data, left - (cursor_w-1), right + (cursor_w-1), top               , bottom               );
> > > -	do_test(data, left               , right               , top - (cursor_h-1), bottom + (cursor_h-1));
> > > -	do_test(data, left - (cursor_w-1), right + (cursor_w-1), top - (cursor_h-1), bottom + (cursor_h-1));
> > > +	const int left = data->left;
> > > +	const int right = data->right;
> > > +	const int top = data->top;
> > > +	const int bottom = data->bottom;
> > > +	const int cursor_w = data->curw;
> > > +	const int cursor_h = data->curh;
> > > +
> > > +	struct {
> > > +		const cursorarea coords;
> > > +		igt_crc_t crc[4];
> > > +	} tests[] = {
> > > +		/* fully inside  */
> > > +		{{left, right, top, bottom}},
> > > +		/* 2 pixels inside */
> > > +		{{left - (cursor_w - 2), right + (cursor_w - 2), top, bottom}},
> > > +		{{left, right, top - (cursor_h - 2), bottom + (cursor_h - 2)}},
> > > +		{{left - (cursor_w - 2), right + (cursor_w - 2),
> > > +		  top - (cursor_h - 2), bottom + (cursor_h - 2)}},
> > > +		/* 1 pixel inside */
> > > +		{{left - (cursor_w - 1), right + (cursor_w - 1), top, bottom}},
> > > +		{{left, right, top - (cursor_h - 1), bottom + (cursor_h - 1)}},
> > > +		{{left - (cursor_w - 1), right + (cursor_w - 1),
> > > +		  top - (cursor_h - 1), bottom + (cursor_h - 1)}},
> > > +	};
> > > +
> > > +	/* HW test */
> > > +	cursor_enable(data);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[HWCURSORBUFFER]);
> > > +	for (int i = 0; i < ARRAY_SIZE(tests); i++)
> > > +		do_test(data, &tests[i].coords, tests[i].crc, true);
> > > +
> > > +	/* SW test */
> > > +	cursor_disable(data);
> > > +	for (int i = 0; i < ARRAY_SIZE(tests); i++)
> > > +		do_test(data, &tests[i].coords, tests[i].crc, false);
> > >   }
> > >   static void test_crc_offscreen(data_t *data)
> > >   {
> > > -	int left = data->left;
> > > -	int right = data->right;
> > > -	int top = data->top;
> > > -	int bottom = data->bottom;
> > > -	int cursor_w = data->curw;
> > > -	int cursor_h = data->curh;
> > > -
> > > -	/* fully outside */
> > > -	do_test(data, left - (cursor_w), right + (cursor_w), top             , bottom             );
> > > -	do_test(data, left             , right             , top - (cursor_h), bottom + (cursor_h));
> > > -	do_test(data, left - (cursor_w), right + (cursor_w), top - (cursor_h), bottom + (cursor_h));
> > > -
> > > -	/* fully outside by 1 extra pixels */
> > > -	do_test(data, left - (cursor_w+1), right + (cursor_w+1), top               , bottom               );
> > > -	do_test(data, left               , right               , top - (cursor_h+1), bottom + (cursor_h+1));
> > > -	do_test(data, left - (cursor_w+1), right + (cursor_w+1), top - (cursor_h+1), bottom + (cursor_h+1));
> > > -
> > > -	/* fully outside by 2 extra pixels */
> > > -	do_test(data, left - (cursor_w+2), right + (cursor_w+2), top               , bottom               );
> > > -	do_test(data, left               , right               , top - (cursor_h+2), bottom + (cursor_h+2));
> > > -	do_test(data, left - (cursor_w+2), right + (cursor_w+2), top - (cursor_h+2), bottom + (cursor_h+2));
> > > -
> > > -	/* fully outside by a lot of extra pixels */
> > > -	do_test(data, left - (cursor_w+512), right + (cursor_w+512), top                 , bottom                 );
> > > -	do_test(data, left                 , right                 , top - (cursor_h+512), bottom + (cursor_h+512));
> > > -	do_test(data, left - (cursor_w+512), right + (cursor_w+512), top - (cursor_h+512), bottom + (cursor_h+512));
> > > -
> > > -	/* go nuts */
> > > -	do_test(data, INT_MIN, INT_MAX - cursor_w, INT_MIN, INT_MAX - cursor_h);
> > > -	do_test(data, SHRT_MIN, SHRT_MAX, SHRT_MIN, SHRT_MAX);
> > > +	const int left = data->left;
> > > +	const int right = data->right;
> > > +	const int top = data->top;
> > > +	const int bottom = data->bottom;
> > > +	const int cursor_w = data->curw;
> > > +	const int cursor_h = data->curh;
> > > +
> > > +	struct {
> > > +		const cursorarea coords;
> > > +		igt_crc_t crc[4];
> > > +	} tests[] = {
> > > +		/* fully outside */
> > > +		{{left - (cursor_w), right + (cursor_w), top, bottom}},
> > > +		{{left, right, top - (cursor_h), bottom + (cursor_h)}},
> > > +		{{left - (cursor_w), right + (cursor_w), top - (cursor_h),
> > > +		  bottom + (cursor_h)}},
> > > +		/* fully outside by 1 extra pixels */
> > > +		{{left - (cursor_w + 1), right + (cursor_w + 1), top, bottom}},
> > > +		{{left, right, top - (cursor_h + 1), bottom + (cursor_h + 1)}},
> > > +		{{left - (cursor_w + 1), right + (cursor_w + 1),
> > > +		  top - (cursor_h + 1), bottom + (cursor_h + 1)}},
> > > +		/* fully outside by 2 extra pixels */
> > > +		{{left - (cursor_w + 2), right + (cursor_w + 2), top, bottom}},
> > > +		{{left, right, top - (cursor_h + 2), bottom + (cursor_h + 2)}},
> > > +		{{left - (cursor_w + 2), right + (cursor_w + 2),
> > > +		  top - (cursor_h + 2), bottom + (cursor_h + 2)}},
> > > +		/* fully outside by a lot of extra pixels */
> > > +		{{left - (cursor_w + 512), right + (cursor_w + 512), top, bottom}},
> > > +		{{left, right, top - (cursor_h + 512), bottom + (cursor_h + 512)}},
> > > +		{{left - (cursor_w + 512), right + (cursor_w + 512),
> > > +		  top - (cursor_h + 512), bottom + (cursor_h + 512)}},
> > > +		/* go nuts */
> > > +		{{INT_MIN, INT_MAX - cursor_w, INT_MIN, INT_MAX - cursor_h}},
> > > +		{{SHRT_MIN, SHRT_MAX, SHRT_MIN, SHRT_MAX}},
> > > +	};
> > > +
> > > +	/* HW test */
> > > +	cursor_enable(data);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[HWCURSORBUFFER]);
> > > +	for (int i = 0; i < ARRAY_SIZE(tests); i++)
> > > +		do_test(data, &tests[i].coords, tests[i].crc, true);
> > > +
> > > +	/* SW test */
> > > +	cursor_disable(data);
> > > +	/*
> > > +	 * all these crc's should be the same, actually render only first image
> > > +	 * to check crc and then compare rest of crc are matching
> > > +	 */
> > > +	do_test(data, &tests[0].coords, tests[0].crc, false);
> > > +
> > > +	for (int i = 1; i < ARRAY_SIZE(tests); i++) {
> > > +		igt_assert_crc_equal(&tests[0].crc[0], &tests[i].crc[0]);
> > > +		igt_assert_crc_equal(&tests[0].crc[0], &tests[i].crc[1]);
> > > +		igt_assert_crc_equal(&tests[0].crc[0], &tests[i].crc[2]);
> > > +		igt_assert_crc_equal(&tests[0].crc[0], &tests[i].crc[3]);
> > > +	}
> > >   	/* Make sure we get -ERANGE on integer overflow */
> > >   	do_fail_test(data, INT_MAX - cursor_w + 1, INT_MAX - cursor_h + 1, -ERANGE);
> > > @@ -320,29 +384,57 @@ static void test_crc_offscreen(data_t *data)
> > >   static void test_crc_sliding(data_t *data)
> > >   {
> > >   	int i;
> > > +	struct {
> > > +		igt_crc_t crc[3];
> > > +	} rounds[16] = {};
> > >   	/* Make sure cursor moves smoothly and pixel-by-pixel, and that there are
> > >   	 * no alignment issues. Horizontal, vertical and diagonal test.
> > >   	 */
> > > -	for (i = 0; i < 16; i++) {
> > > -		do_single_test(data, i, 0);
> > > -		do_single_test(data, 0, i);
> > > -		do_single_test(data, i, i);
> > > +
> > > +	/* HW test */
> > > +	cursor_enable(data);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[HWCURSORBUFFER]);
> > > +
> > > +	for (i = 0; i < ARRAY_SIZE(rounds); i++) {
> > > +		do_single_test(data, i, 0, true, &rounds[i].crc[0]);
> > > +		do_single_test(data, 0, i, true, &rounds[i].crc[1]);
> > > +		do_single_test(data, i, i, true, &rounds[i].crc[2]);
> > > +	}
> > > +
> > > +	/* SW test */
> > > +	cursor_disable(data);
> > > +	for (i = 0; i < ARRAY_SIZE(rounds); i++) {
> > > +		do_single_test(data, i, 0, false, &rounds[i].crc[0]);
> > > +		do_single_test(data, 0, i, false, &rounds[i].crc[1]);
> > > +		do_single_test(data, i, i, false, &rounds[i].crc[2]);
> > >   	}
> > >   }
> > >   static void test_crc_random(data_t *data)
> > >   {
> > > -	int i, max;
> > > +	igt_crc_t crc[50];
> > > +	int i, max, x[ARRAY_SIZE(crc)], y[ARRAY_SIZE(crc)];
> > > -	max = data->flags & (TEST_DPMS | TEST_SUSPEND) ? 2 : 50;
> > > +	max = data->flags & (TEST_DPMS | TEST_SUSPEND) ? 2 : ARRAY_SIZE(crc);
> > >   	/* Random cursor placement */
> > > +
> > > +	/* HW test */
> > > +	cursor_enable(data);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[HWCURSORBUFFER]);
> > > +
> > >   	for (i = 0; i < max; i++) {
> > > -		int x = rand() % (data->screenw + data->curw * 2) - data->curw;
> > > -		int y = rand() % (data->screenh + data->curh * 2) - data->curh;
> > > -		do_single_test(data, x, y);
> > > +		x[i] = rand() % (data->screenw + data->curw * 2) - data->curw;
> > > +		y[i] = rand() % (data->screenh + data->curh * 2) - data->curh;
> > > +		do_single_test(data, x[i], y[i], true, &crc[i]);
> > >   	}
> > > +
> > > +	/* SW test */
> > > +	cursor_disable(data);
> > > +	for (i = 0; i < max; i++)
> > > +		do_single_test(data, x[i], y[i], false, &crc[i]);
> > > +
> > >   }
> > >   static void cleanup_crtc(data_t *data)
> > > @@ -362,7 +454,8 @@ static void cleanup_crtc(data_t *data)
> > >   	igt_display_commit(display);
> > >   	igt_remove_fb(data->drm_fd, &data->primary_fb[HWCURSORBUFFER]);
> > > -	igt_remove_fb(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +	igt_remove_fb(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > > +	igt_remove_fb(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER2]);
> > >   	igt_display_reset(display);
> > >   }
> > > @@ -379,22 +472,22 @@ static void prepare_crtc(data_t *data, igt_output_t *output,
> > >   	/* create and set the primary plane fbs */
> > >   	mode = igt_output_get_mode(output);
> > > -	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> > > -			    DRM_FORMAT_XRGB8888,
> > > -			    DRM_FORMAT_MOD_NONE,
> > > -			    0.0, 0.0, 0.0,
> > > -			    &data->primary_fb[HWCURSORBUFFER]);
> > > -
> > > -	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> > > -			    DRM_FORMAT_XRGB8888,
> > > -			    DRM_FORMAT_MOD_NONE,
> > > -			    0.0, 0.0, 0.0,
> > > -			    &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +	igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> > > +		      DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
> > > +		      &data->primary_fb[HWCURSORBUFFER]);
> > > +
> > > +	igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> > > +		      DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
> > > +		      &data->primary_fb[SWCOMPARISONBUFFER1]);
> > > +
> > > +	igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
> > > +		      DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
> > > +		      &data->primary_fb[SWCOMPARISONBUFFER2]);
> > >   	data->primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> > >   	data->cursor = igt_output_get_plane_type(output, DRM_PLANE_TYPE_CURSOR);
> > > -	igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > >   	igt_display_commit(display);
> > > @@ -427,7 +520,7 @@ static void prepare_crtc(data_t *data, igt_output_t *output,
> > >   		cairo_destroy(cr);
> > >   		/* Set HW cursor buffer in place */
> > > -			restore_image(data, HWCURSORBUFFER);
> > > +		restore_image(data, HWCURSORBUFFER, NULL);
> > >   	} else
> > >   		data->surface = NULL;
> > > @@ -469,10 +562,10 @@ static void test_cursor_alpha(data_t *data, double a)
> > >   	igt_remove_fb(data->drm_fd, &data->fb);
> > >   	/* Software Test - render cursor in software, drawn it directly on PF */
> > > -	cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +	cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > >   	igt_paint_color_alpha(cr, 0, 0, curw, curh, 1.0, 1.0, 1.0, a);
> > >   	igt_put_cairo_ctx(cr);
> > > -	igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +	igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > >   	igt_display_commit(display);
> > >   	igt_wait_for_vblank(data->drm_fd,
> > >   			display->pipes[data->pipe].crtc_offset);
> > > @@ -513,7 +606,7 @@ static void create_cursor_fb(data_t *data, int cur_w, int cur_h)
> > >   	igt_assert(fb_id);
> > >   	cr = igt_get_cairo_ctx(data->drm_fd, &data->fb);
> > > -	draw_cursor(cr, 0, 0, cur_w, cur_h, 1.0);
> > > +	draw_cursor(cr, &((cursorarea){0, 0, cur_w, cur_h}));
> > >   	igt_put_cairo_ctx(cr);
> > >   }
> > > @@ -610,7 +703,7 @@ static void test_cursor_size(data_t *data)
> > >   		igt_display_commit(display);
> > >   		/* Now render the same in software and collect crc */
> > > -		cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +		cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > >   		/* remove previous cursor sw image */
> > >   		if (prevsize > 0)
> > > @@ -619,7 +712,7 @@ static void test_cursor_size(data_t *data)
> > >   		igt_paint_color_alpha(cr, 0, 0, size, size, 1.0, 1.0, 1.0, 1.0);
> > >   		igt_put_cairo_ctx(cr);
> > > -		igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER]);
> > > +		igt_plane_set_fb(data->primary, &data->primary_fb[SWCOMPARISONBUFFER1]);
> > >   		igt_display_commit(display);
> > >   		igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &ref_crc);
> > > @@ -657,6 +750,8 @@ static void test_rapid_movement(data_t *data)
> > >   	}
> > >   	gettimeofday(&end, NULL);
> > > +	cursor_disable(data);
> > > +
> > >   	/*
> > >   	 * We've done 400 cursor updates now.  If we're being throttled to
> > >   	 * vblank, then that would take roughly 400/refresh seconds.  If the
> > > @@ -813,6 +908,9 @@ igt_main
> > >   		igt_require_pipe_crc(data.drm_fd);
> > >   		igt_display_require(&data.display, data.drm_fd);
> > > +		igt_display_reset(&data.display);
> > > +		igt_display_commit2(&data.display, data.display.is_atomic ?
> > > +				    COMMIT_ATOMIC : COMMIT_LEGACY);
> > >   	}
> > 
> > igt_display_require() calls igt_display_reset at the end of it... but
> > after that does igt_enable_connectors. Is that why this extra
> > igt_display_reset is needed here?
> > 
> 
> This is something I don't yet know where exactly the problem exists, earlier
> failed tests may leave tail which this is able to clear out. I coined this
> for myself to do some debugging:
> https://patchwork.freedesktop.org/series/93756/
> 
> Those igt_display_reset(..) followed by atomic and legacy commit and get crc
> of white imo should match but they don't do that for me. Situation is the
> same as kms_plane_alpha_blend failed and will arrive to new test, there
> maybe differences if test uses legacy or atomic commits.


Well if this series helps, it's
Acked-by: Petri Latvala <petri.latvala at intel.com>

My concern is whether that's all tests covered that need this dancing,
and what kind of dancing is _actually_ required. And whether we can
make this cleaner without requiring all tests to call all kinds of
functions if they're already calling a helper that by its name is
claiming to do all the necessary initialization.


-- 
Petri Latvala


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