[Intel-gfx] [PATCH 1/2] i-g-t: Adding plane scaling test case

Thomas Wood thomas.wood at intel.com
Mon Mar 23 10:46:47 PDT 2015


On 21 March 2015 at 00:11, Chandra Konduru <chandra.konduru at intel.com> wrote:
> From: chandra konduru <chandra.konduru at intel.com>
>
> This patch is adding i-g-t plane scaling test case to test couple basic
> display plane scaling usages. Additional test scenarios can be added later.

Unfortunately both patches in this series don't apply cleanly to
current master of intel-gpu-tools. Please could you rebase and send
them again?

>
> v2:
> -Added iterative scaling to visually observe scaling (me)
>
> v3:
> -Added a flag to control primary plane scaling.
>
> Signed-off-by: chandra konduru <chandra.konduru at intel.com>
> ---
>  lib/igt_fb.h              |    4 +
>  lib/igt_kms.c             |  122 +++++++++++++--
>  lib/igt_kms.h             |    5 +
>  tests/.gitignore          |    1 +
>  tests/Android.mk          |    1 +
>  tests/Makefile.sources    |    1 +
>  tests/kms_plane_scaling.c |  370 +++++++++++++++++++++++++++++++++++++++++++++
>  7 files changed, 488 insertions(+), 16 deletions(-)
>  create mode 100644 tests/kms_plane_scaling.c
>
> diff --git a/lib/igt_fb.h b/lib/igt_fb.h
> index d9fb6bb..c21d1d0 100644
> --- a/lib/igt_fb.h
> +++ b/lib/igt_fb.h
> @@ -54,6 +54,10 @@ struct igt_fb {
>         unsigned tiling;
>         unsigned size;
>         cairo_surface_t *cairo_surface;
> +       uint32_t src_x;
> +       uint32_t src_y;
> +       uint32_t src_w;
> +       uint32_t src_h;
>  };
>
>  enum igt_text_align {
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 72841ef..895830b 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -1299,6 +1299,14 @@ static int igt_drm_plane_commit(igt_plane_t *plane,
>         igt_display_t *display = output->display;
>         uint32_t fb_id, crtc_id;
>         int ret;
> +       uint32_t src_x;
> +       uint32_t src_y;
> +       uint32_t src_w;
> +       uint32_t src_h;
> +       int32_t crtc_x;
> +       int32_t crtc_y;
> +       uint32_t crtc_w;
> +       uint32_t crtc_h;
>
>         igt_assert(plane->drm_plane);
>
> @@ -1329,32 +1337,43 @@ static int igt_drm_plane_commit(igt_plane_t *plane,
>                                       IGT_FIXED(0,0) /* src_h */);
>
>                 CHECK_RETURN(ret, fail_on_error);
> -       } else if (plane->fb_changed || plane->position_changed) {
> +       } else if (plane->fb_changed || plane->position_changed ||
> +               plane->size_changed) {
> +               src_x = IGT_FIXED(plane->fb->src_x,0); /* src_x */
> +               src_y = IGT_FIXED(plane->fb->src_y,0); /* src_y */
> +               src_w = IGT_FIXED(plane->fb->src_w,0); /* src_w */
> +               src_h = IGT_FIXED(plane->fb->src_h,0); /* src_h */
> +               crtc_x = plane->crtc_x;
> +               crtc_y = plane->crtc_y;
> +               crtc_w = plane->crtc_w;
> +               crtc_h = plane->crtc_h;
> +
>                 LOG(display,
> -                   "%s: SetPlane %s.%d, fb %u, position (%d, %d)\n",
> +                   "%s: SetPlane %s.%d, fb %u, src = (%d, %d) "
> +                       "%ux%u dst = (%u, %u) %ux%u\n",
>                     igt_output_name(output),
>                     kmstest_pipe_name(output->config.pipe),
>                     plane->index,
>                     fb_id,
> -                   plane->crtc_x, plane->crtc_y);
> +                   src_x >> 16, src_y >> 16, src_w >> 16, src_h >> 16,
> +                   crtc_x, crtc_y, crtc_w, crtc_h);
>
>                 ret = drmModeSetPlane(display->drm_fd,
>                                       plane->drm_plane->plane_id,
>                                       crtc_id,
>                                       fb_id,
>                                       0,    /* flags */
> -                                     plane->crtc_x, plane->crtc_y,
> -                                     plane->crtc_w, plane->crtc_h,
> -                                     IGT_FIXED(0,0), /* src_x */
> -                                     IGT_FIXED(0,0), /* src_y */
> -                                     IGT_FIXED(plane->fb->width,0), /* src_w */
> -                                     IGT_FIXED(plane->fb->height,0) /* src_h */);
> +                                     crtc_x, crtc_y,
> +                                     crtc_w, crtc_h,
> +                                     src_x, src_y,
> +                                     src_w, src_h);
>
>                 CHECK_RETURN(ret, fail_on_error);
>         }
>
>         plane->fb_changed = false;
>         plane->position_changed = false;
> +       plane->size_changed = false;
>
>         if (plane->rotation_changed) {
>                 igt_plane_set_property(plane, plane->rotation_property,
> @@ -1449,7 +1468,7 @@ static int igt_primary_plane_commit_legacy(igt_plane_t *primary,
>         igt_assert(!primary->rotation_changed);
>
>         if (!primary->fb_changed && !primary->position_changed &&
> -           !primary->panning_changed)
> +               !primary->size_changed && !primary->panning_changed)
>                 return 0;
>
>         crtc_id = output->config.crtc->crtc_id;
> @@ -1496,6 +1515,7 @@ static int igt_primary_plane_commit_legacy(igt_plane_t *primary,
>         primary->pipe->enabled = (fb_id != 0);
>         primary->fb_changed = false;
>         primary->position_changed = false;
> +       primary->size_changed = false;
>         primary->panning_changed = false;
>
>         return 0;
> @@ -1553,7 +1573,7 @@ static int igt_output_commit(igt_output_t *output,
>         for (i = 0; i < pipe->n_planes; i++) {
>                 igt_plane_t *plane = &pipe->planes[i];
>
> -               if (plane->fb_changed || plane->position_changed)
> +               if (plane->fb_changed || plane->position_changed || plane->size_changed)
>                         need_wait_for_vblank = true;
>
>                 ret = igt_plane_commit(plane, output, s, fail_on_error);
> @@ -1722,7 +1742,22 @@ void igt_plane_set_fb(igt_plane_t *plane, struct igt_fb *fb)
>                 plane->crtc_h = 0;
>         }
>
> +       if (fb) {
> +               /* set default plane pos/size as fb size */
> +               plane->crtc_x = 0;
> +               plane->crtc_y = 0;
> +               plane->crtc_w = fb->width;
> +               plane->crtc_h = fb->height;
> +
> +               /* set default src pos/size as fb size */
> +               fb->src_x = 0;
> +               fb->src_y = 0;
> +               fb->src_w = fb->width;
> +               fb->src_h = fb->height;
> +       }
> +
>         plane->fb_changed = true;
> +       plane->size_changed = true;
>  }
>
>  void igt_plane_set_position(igt_plane_t *plane, int x, int y)
> @@ -1739,21 +1774,76 @@ void igt_plane_set_position(igt_plane_t *plane, int x, int y)
>         plane->position_changed = true;
>  }
>
> +/**
> + * igt_plane_set_size:
> + * @plane: plane pointer for which size to be set
> + * @w: width
> + * @h: height
> + *
> + * This function sets width and height for requested plane.
> + * New size will be commited at plane commit time via
> + * drmModeSetPlane().
> + */
>  void igt_plane_set_size(igt_plane_t *plane, int w, int h)
>  {
>         igt_pipe_t *pipe = plane->pipe;
>         igt_display_t *display = pipe->display;
>
> -       LOG(display, "%s.%d: plane_set_size(%d,%d)\n",
> +       LOG(display, "%s.%d: plane_set_size (%dx%d)\n",
>             kmstest_pipe_name(pipe->pipe), plane->index, w, h);
>
>         plane->crtc_w = w;
>         plane->crtc_h = h;
>
> -       /*
> -        * must be fb_changed so that legacy cursors call
> -        * drmModeSetCursor() instead of drmModeMoveCursor()
> -        */
> +       plane->size_changed = true;
> +}
> +
> +/**
> + * igt_fb_set_position:
> + * @fb: framebuffer pointer

The plane parameter description is missing here.

> + * @x: X position
> + * @y: Y position
> + *
> + * This function sets position for requested framebuffer as src to plane.
> + * New position will be commited at plane commit time via drmModeSetPlane().
> + */
> +void igt_fb_set_position(struct igt_fb *fb, igt_plane_t *plane,
> +       uint32_t x, uint32_t y)
> +{
> +       igt_pipe_t *pipe = plane->pipe;
> +       igt_display_t *display = pipe->display;
> +
> +       LOG(display, "%s.%d: fb_set_position(%d,%d)\n",
> +           kmstest_pipe_name(pipe->pipe), plane->index, x, y);
> +
> +       fb->src_x = x;
> +       fb->src_y = y;
> +
> +       plane->fb_changed = true;
> +}
> +
> +/**
> + * igt_fb_set_position:

This should be igt_fb_set_size, and is also missing the plane
parameter description.

> + * @fb: framebuffer pointer
> + * @w: width
> + * @h: height
> + *
> + * This function sets fetch rect size from requested framebuffer as src
> + * to plane. New size will be commited at plane commit time via
> + * drmModeSetPlane().
> + */
> +void igt_fb_set_size(struct igt_fb *fb, igt_plane_t *plane,
> +       uint32_t w, uint32_t h)
> +{
> +       igt_pipe_t *pipe = plane->pipe;
> +       igt_display_t *display = pipe->display;
> +
> +       LOG(display, "%s.%d: fb_set_position(%dx%d)\n",
> +           kmstest_pipe_name(pipe->pipe), plane->index, w, h);
> +
> +       fb->src_w = w;
> +       fb->src_h = h;
> +
>         plane->fb_changed = true;
>  }
>
> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
> index 4fada1b..2dde5d3 100644
> --- a/lib/igt_kms.h
> +++ b/lib/igt_kms.h
> @@ -181,6 +181,7 @@ typedef struct {
>         unsigned int position_changed : 1;
>         unsigned int panning_changed  : 1;
>         unsigned int rotation_changed : 1;
> +       unsigned int size_changed     : 1;
>         /*
>          * drm_plane can be NULL for primary and cursor planes (when not
>          * using the atomic modeset API)
> @@ -255,6 +256,10 @@ void igt_plane_set_size(igt_plane_t *plane, int w, int h);
>  void igt_plane_set_panning(igt_plane_t *plane, int x, int y);
>  void igt_plane_set_rotation(igt_plane_t *plane, igt_rotation_t rotation);
>  void igt_crtc_set_background(igt_pipe_t *pipe, uint64_t background);
> +void igt_fb_set_position(struct igt_fb *fb, igt_plane_t *plane,
> +       uint32_t x, uint32_t y);
> +void igt_fb_set_size(struct igt_fb *fb, igt_plane_t *plane,
> +       uint32_t w, uint32_t h);
>
>  void igt_wait_for_vblank(int drm_fd, enum pipe pipe);
>
> diff --git a/tests/.gitignore b/tests/.gitignore
> index 69d2ba0..d1381cd 100644
> --- a/tests/.gitignore
> +++ b/tests/.gitignore
> @@ -138,6 +138,7 @@ kms_setmode
>  kms_sink_crc_basic
>  kms_universal_plane
>  kms_crtc_background_color
> +kms_plane_scaling
>  multi-tests.txt
>  pm_lpsp
>  pm_psr
> diff --git a/tests/Android.mk b/tests/Android.mk
> index 96a32b9..c024296 100644
> --- a/tests/Android.mk
> +++ b/tests/Android.mk
> @@ -76,6 +76,7 @@ else
>      kms_force_connector \
>      kms_flip_event_leak \
>      kms_crtc_background_color \
> +    kms_plane_scaling \
>      kms_pwrite_crc
>      IGT_LOCAL_CFLAGS += -DANDROID_HAS_CAIRO=0
>  endif
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 4f612e6..460df02 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -78,6 +78,7 @@ TESTS_progs_M = \
>         kms_setmode \
>         kms_universal_plane \
>         kms_crtc_background_color \
> +       kms_plane_scaling \
>         pm_lpsp \
>         pm_rpm \
>         pm_rps \
> diff --git a/tests/kms_plane_scaling.c b/tests/kms_plane_scaling.c
> new file mode 100644
> index 0000000..180ff5e
> --- /dev/null
> +++ b/tests/kms_plane_scaling.c
> @@ -0,0 +1,370 @@
> +/*
> + * Copyright © 2013,2014 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + *
> + */
> +
> +#include <math.h>
> +
> +#include "drmtest.h"
> +#include "igt_debugfs.h"
> +#include "igt_kms.h"
> +#include "igt_core.h"
> +#include "intel_chipset.h"
> +#include "igt_aux.h"
> +
> +IGT_TEST_DESCRIPTION("Test display plane scaling");
> +
> +typedef struct {
> +       uint32_t devid;
> +       int drm_fd;
> +       igt_display_t display;
> +       igt_crc_t ref_crc;
> +       igt_pipe_crc_t *pipe_crc;
> +
> +       int image_w;
> +       int image_h;
> +
> +       int num_scalers;
> +
> +       struct igt_fb fb1;
> +       struct igt_fb fb2;
> +       struct igt_fb fb3;
> +       int fb_id1;
> +       int fb_id2;
> +       int fb_id3;
> +
> +       igt_plane_t *plane1;
> +       igt_plane_t *plane2;
> +       igt_plane_t *plane3;
> +       igt_plane_t *plane4;
> +} data_t;
> +
> +#define FILE_NAME   "1080p-left.png"
> +
> +static void
> +paint_color(data_t *d, struct igt_fb *fb, uint16_t w, uint16_t h)
> +{
> +       cairo_t *cr;
> +
> +       cr = igt_get_cairo_ctx(d->drm_fd, fb);
> +       igt_paint_test_pattern(cr, w, h);
> +       cairo_destroy(cr);
> +}
> +
> +static void
> +paint_image(data_t *d, struct igt_fb *fb, uint16_t w, uint16_t h)
> +{
> +       cairo_t *cr;
> +
> +       cr = igt_get_cairo_ctx(d->drm_fd, fb);
> +       igt_paint_image(cr, FILE_NAME, 0, 0, w, h);
> +       cairo_destroy(cr);
> +}
> +
> +static void prepare_crtc(data_t *data, igt_output_t *output, enum pipe pipe,
> +                       igt_plane_t *plane, drmModeModeInfo *mode, enum igt_commit_style s)
> +{
> +       igt_display_t *display = &data->display;
> +
> +       igt_output_set_pipe(output, pipe);
> +
> +       /* create the pipe_crc object for this pipe */
> +       igt_pipe_crc_free(data->pipe_crc);
> +       data->pipe_crc = igt_pipe_crc_new(pipe, INTEL_PIPE_CRC_SOURCE_AUTO);
> +
> +       /* before allocating, free if any older fb */
> +       if (data->fb_id1) {
> +               igt_remove_fb(data->drm_fd, &data->fb1);
> +               data->fb_id1 = 0;
> +       }
> +
> +       /* allocate fb for plane 1 */
> +       data->fb_id1 = igt_create_fb(data->drm_fd,
> +                       mode->hdisplay, mode->vdisplay,
> +                       DRM_FORMAT_XRGB8888,
> +                       true, /* tiled */
> +                       &data->fb1);
> +       igt_assert(data->fb_id1);
> +
> +       paint_color(data, &data->fb1, mode->hdisplay, mode->vdisplay);
> +
> +       /*
> +        * We always set the primary plane to actually enable the pipe as
> +        * there's no way (that works) to light up a pipe with only a sprite
> +        * plane enabled at the moment.
> +        */
> +       if (!plane->is_primary) {
> +               igt_plane_t *primary;
> +
> +               primary = igt_output_get_plane(output, IGT_PLANE_PRIMARY);
> +               igt_plane_set_fb(primary, &data->fb1);
> +       }
> +
> +       igt_plane_set_fb(plane, &data->fb1);
> +       if (s == COMMIT_LEGACY) {
> +               int ret;
> +               ret = drmModeSetCrtc(data->drm_fd,
> +                               output->config.crtc->crtc_id,
> +                               data->fb_id1,
> +                               plane->pan_x, plane->pan_y,
> +                               &output->id,
> +                               1,
> +                               mode);
> +               igt_assert(ret == 0);

igt.cocci suggests igt_assert_eq(ret, 0) here instead of igt_assert.

> +       } else {
> +               igt_display_commit2(display, s);
> +       }
> +}
> +
> +static void cleanup_crtc(data_t *data, igt_output_t *output, igt_plane_t *plane)
> +{
> +       igt_display_t *display = &data->display;
> +
> +       igt_pipe_crc_free(data->pipe_crc);
> +       data->pipe_crc = NULL;
> +
> +       if (data->fb_id1) {
> +               igt_remove_fb(data->drm_fd, &data->fb1);
> +               data->fb_id1 = 0;
> +       }
> +       if (data->fb_id2) {
> +               igt_remove_fb(data->drm_fd, &data->fb2);
> +               data->fb_id2 = 0;
> +       }
> +       if (data->fb_id3) {
> +               igt_remove_fb(data->drm_fd, &data->fb3);
> +               data->fb_id3 = 0;
> +       }
> +
> +       if (!plane->is_primary) {
> +               igt_plane_t *primary;
> +
> +               primary = igt_output_get_plane(output, IGT_PLANE_PRIMARY);
> +               igt_plane_set_fb(primary, NULL);
> +       }
> +
> +       igt_plane_set_fb(plane, NULL);
> +       igt_output_set_pipe(output, PIPE_ANY);
> +
> +       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +}
> +
> +/* does iterative scaling on plane2 */
> +static void iterate_plane_scaling(data_t *d, drmModeModeInfo *mode)
> +{
> +       igt_display_t *display = &d->display;
> +
> +       if (mode->hdisplay >= d->fb2.width) {
> +               int w, h;
> +               /* fixed fb */
> +               igt_fb_set_position(&d->fb2, d->plane2, 0, 0);
> +               igt_fb_set_size(&d->fb2, d->plane2, d->fb2.width, d->fb2.height);
> +               igt_plane_set_position(d->plane2, 0, 0);
> +
> +               /* adjust plane size */
> +               for (w = d->fb2.width; w <= mode->hdisplay; w+=10) {
> +                       h = w * d->fb2.height / d->fb2.width;
> +                       igt_plane_set_size(d->plane2, w, h);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +               }
> +       } else {
> +               int w, h;
> +               /* fixed plane */
> +               igt_plane_set_position(d->plane2, 0, 0);
> +               igt_plane_set_size(d->plane2, mode->hdisplay, mode->vdisplay);
> +               igt_fb_set_position(&d->fb2, d->plane2, 0, 0);
> +
> +               /* adjust fb size */
> +               for (w = mode->hdisplay; w <= d->fb2.width; w+=10) {
> +                       h = w * mode->hdisplay / mode->vdisplay;
> +                       igt_fb_set_size(&d->fb2, d->plane2, w, h);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +               }
> +       }
> +}
> +
> +static void test_plane_scaling(data_t *d)
> +{
> +       igt_display_t *display = &d->display;
> +       igt_output_t *output;
> +       cairo_surface_t *image;
> +       enum pipe pipe;
> +       int valid_tests = 0;
> +       int primary_plane_scaling = 0; /* For now */
> +
> +       igt_require(d->display.has_universal_planes);
> +       igt_require(d->num_scalers);
> +
> +       for_each_connected_output(display, output) {
> +               drmModeModeInfo *mode;
> +
> +               pipe = output->config.pipe;
> +               igt_output_set_pipe(output, pipe);
> +
> +               mode = igt_output_get_mode(output);
> +
> +               /* allocate fb2 with image size */
> +               image = cairo_image_surface_create_from_png(FILE_NAME);
> +               igt_assert(cairo_surface_status(image) == CAIRO_STATUS_SUCCESS);
> +               d->image_w = cairo_image_surface_get_width(image);
> +               d->image_h = cairo_image_surface_get_height(image);
> +               cairo_surface_destroy(image);
> +
> +               d->fb_id2 = igt_create_fb(d->drm_fd,
> +                               d->image_w, d->image_h,
> +                               DRM_FORMAT_XRGB8888,
> +                               true, /* tiled */
> +                               &d->fb2);
> +               igt_assert(d->fb_id2);
> +               paint_image(d, &d->fb2, d->fb2.width, d->fb2.height);
> +
> +               d->fb_id3 = igt_create_fb(d->drm_fd,
> +                               mode->hdisplay, mode->vdisplay,
> +                               DRM_FORMAT_XRGB8888,
> +                               true, /* tiled */
> +                               &d->fb3);
> +               igt_assert(d->fb_id3);
> +               paint_color(d, &d->fb3, mode->hdisplay, mode->vdisplay);
> +
> +               /* Set up display with plane 1 */
> +               d->plane1 = igt_output_get_plane(output, IGT_PLANE_PRIMARY);
> +               prepare_crtc(d, output, pipe, d->plane1, mode, COMMIT_UNIVERSAL);
> +
> +               if (primary_plane_scaling) {
> +                       /* Primary plane upscaling */
> +                       igt_fb_set_position(&d->fb1, d->plane1, 100, 100);
> +                       igt_fb_set_size(&d->fb1, d->plane1, 500, 500);
> +                       igt_plane_set_position(d->plane1, 0, 0);
> +                       igt_plane_set_size(d->plane1, mode->hdisplay, mode->vdisplay);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +                       /* Primary plane 1:1 no scaling */
> +                       igt_fb_set_position(&d->fb1, d->plane1, 0, 0);
> +                       igt_fb_set_size(&d->fb1, d->plane1, d->fb1.width, d->fb1.height);
> +                       igt_plane_set_position(d->plane1, 0, 0);
> +                       igt_plane_set_size(d->plane1, mode->hdisplay, mode->vdisplay);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +               }
> +
> +               /* Set up fb2->plane2 mapping. */
> +               d->plane2 = igt_output_get_plane(output, IGT_PLANE_2);
> +               igt_plane_set_fb(d->plane2, &d->fb2);
> +
> +               /* 2nd plane windowed */
> +               igt_fb_set_position(&d->fb2, d->plane2, 100, 100);
> +               igt_fb_set_size(&d->fb2, d->plane2, d->fb2.width-200, d->fb2.height-200);
> +               igt_plane_set_position(d->plane2, 100, 100);
> +               igt_plane_set_size(d->plane2, mode->hdisplay-200, mode->vdisplay-200);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               iterate_plane_scaling(d, mode);
> +
> +               /* 2nd plane up scaling */
> +               igt_fb_set_position(&d->fb2, d->plane2, 100, 100);
> +               igt_fb_set_size(&d->fb2, d->plane2, 500, 500);
> +               igt_plane_set_position(d->plane2, 10, 10);
> +               igt_plane_set_size(d->plane2, mode->hdisplay-20, mode->vdisplay-20);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               /* 2nd plane downscaling */
> +               igt_fb_set_position(&d->fb2, d->plane2, 0, 0);
> +               igt_fb_set_size(&d->fb2, d->plane2, d->fb2.width, d->fb2.height);
> +               igt_plane_set_position(d->plane2, 10, 10);
> +               igt_plane_set_size(d->plane2, 500, 500 * d->fb2.height/d->fb2.width);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               if (primary_plane_scaling) {
> +                       /* Primary plane up scaling */
> +                       igt_fb_set_position(&d->fb1, d->plane1, 100, 100);
> +                       igt_fb_set_size(&d->fb1, d->plane1, 500, 500);
> +                       igt_plane_set_position(d->plane1, 0, 0);
> +                       igt_plane_set_size(d->plane1, mode->hdisplay, mode->vdisplay);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +               }
> +
> +               /* Set up fb3->plane3 mapping. */
> +               d->plane3 = igt_output_get_plane(output, IGT_PLANE_3);
> +               igt_plane_set_fb(d->plane3, &d->fb3);
> +
> +               /* 3rd plane windowed - no scaling */
> +               igt_fb_set_position(&d->fb3, d->plane3, 100, 100);
> +               igt_fb_set_size(&d->fb3, d->plane3, d->fb3.width-300, d->fb3.height-300);
> +               igt_plane_set_position(d->plane3, 100, 100);
> +               igt_plane_set_size(d->plane3, mode->hdisplay-300, mode->vdisplay-300);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               /* Switch scaler from plane 2 to plane 3 */
> +               igt_fb_set_position(&d->fb2, d->plane2, 100, 100);
> +               igt_fb_set_size(&d->fb2, d->plane2, d->fb2.width-200, d->fb2.height-200);
> +               igt_plane_set_position(d->plane2, 100, 100);
> +               igt_plane_set_size(d->plane2, d->fb2.width-200, d->fb2.height-200);
> +
> +               igt_fb_set_position(&d->fb3, d->plane3, 100, 100);
> +               igt_fb_set_size(&d->fb3, d->plane3, d->fb3.width-400, d->fb3.height-400);
> +               igt_plane_set_position(d->plane3, 10, 10);
> +               igt_plane_set_size(d->plane3, mode->hdisplay-300, mode->vdisplay-300);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               if (primary_plane_scaling) {
> +                       /* Switch scaler from plane 1 to plane 2 */
> +                       igt_fb_set_position(&d->fb1, d->plane1, 0, 0);
> +                       igt_fb_set_size(&d->fb1, d->plane1, d->fb1.width, d->fb1.height);
> +                       igt_plane_set_position(d->plane1, 0, 0);
> +                       igt_plane_set_size(d->plane1, mode->hdisplay, mode->vdisplay);
> +
> +                       igt_fb_set_position(&d->fb2, d->plane2, 100, 100);
> +                       igt_fb_set_size(&d->fb2, d->plane2, d->fb2.width-500,d->fb2.height-500);
> +                       igt_plane_set_position(d->plane2, 100, 100);
> +                       igt_plane_set_size(d->plane2, mode->hdisplay-200, mode->vdisplay-200);
> +                       igt_display_commit2(display, COMMIT_UNIVERSAL);
> +               }
> +
> +               /* back to single plane mode */
> +               igt_plane_set_fb(d->plane2, NULL);
> +               igt_plane_set_fb(d->plane3, NULL);
> +               igt_display_commit2(display, COMMIT_UNIVERSAL);
> +
> +               valid_tests++;
> +               cleanup_crtc(d, output, d->plane1);
> +       }
> +       igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
> +}
> +
> +igt_main
> +{
> +       data_t data = {};
> +
> +       igt_skip_on_simulation();
> +
> +
> +       data.drm_fd = drm_open_any();
> +       igt_require_pipe_crc();
> +       igt_display_init(&data.display, data.drm_fd);
> +       data.devid = intel_get_drm_devid(data.drm_fd);
> +
> +       data.num_scalers = intel_gen(data.devid) >= 9 ? 2 : 0;

Since test_plane_scaling() requires num_scalers not to be zero, would
it be clearer just to add an igt_skip here with a suitable
explanation?


> +
> +       igt_subtest("plane-scaling")
> +               test_plane_scaling(&data);

Do you intent to add more subtests? If not then this could be reduced
to a simple test without subtests.

> +
> +       igt_display_fini(&data.display);
> +}
> --
> 1.7.9.5
>
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