Currently, vkms only supports the reflect-x property. Therefore, add the reflect-y property to vkms through a software implementation of the operation. This is possible by reverse reading the y axis during the blending. Note that, by implementing the reflect-x and reflect-y properties, it is also possible to add the rotate-180 property, as it is a combination of those two properties. Tested with igt@kms_rotation_crc@primary-reflect-y [1], igt@kms_rotation_crc@sprite-reflect-y [1], igt@kms_rotation_crc@primary-rotation-180, igt@kms_rotation_crc@sprite-rotation-180, and igt@kms_rotation_crc@cursor-rotation-180. Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx> --- drivers/gpu/drm/vkms/vkms_composer.c | 16 +++++++++++++--- drivers/gpu/drm/vkms/vkms_plane.c | 7 +++++-- 2 files changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index a4436981cbcd..6c5ef11b3943 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -53,6 +53,13 @@ static void pre_mul_alpha_blend(struct vkms_frame_info *frame_info, } } +static int get_y_pos(struct vkms_frame_info *frame_info, int y) +{ + if (frame_info->rotation & DRM_MODE_REFLECT_Y) + return drm_rect_height(&frame_info->rotated) - y - 1; + return y; +} + static bool check_y_limit(struct vkms_frame_info *frame_info, int y) { if (y >= frame_info->rotated.y1 && y < frame_info->rotated.y2) @@ -86,6 +93,7 @@ static void blend(struct vkms_writeback_job *wb, { struct vkms_plane_state **plane = crtc_state->active_planes; u32 n_active_planes = crtc_state->num_active_planes; + int y_pos; const struct pixel_argb_u16 background_color = { .a = 0xffff }; @@ -96,10 +104,12 @@ static void blend(struct vkms_writeback_job *wb, /* The active planes are composed associatively in z-order. */ for (size_t i = 0; i < n_active_planes; i++) { - if (!check_y_limit(plane[i]->frame_info, y)) + y_pos = get_y_pos(plane[i]->frame_info, y); + + if (!check_y_limit(plane[i]->frame_info, y_pos)) continue; - vkms_compose_row(stage_buffer, plane[i], y); + vkms_compose_row(stage_buffer, plane[i], y_pos); pre_mul_alpha_blend(plane[i]->frame_info, stage_buffer, output_buffer); } @@ -107,7 +117,7 @@ static void blend(struct vkms_writeback_job *wb, *crc32 = crc32_le(*crc32, (void *)output_buffer->pixels, row_size); if (wb) - wb->wb_write(&wb->wb_frame_info, output_buffer, y); + wb->wb_write(&wb->wb_frame_info, output_buffer, y_pos); } } diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 3639afd7da47..904a278e07d7 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -123,7 +123,8 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, memcpy(&frame_info->map, &shadow_plane_state->data, sizeof(frame_info->map)); drm_framebuffer_get(frame_info->fb); frame_info->rotation = drm_rotation_simplify(new_state->rotation, DRM_MODE_ROTATE_0 | - DRM_MODE_REFLECT_X); + DRM_MODE_REFLECT_X | + DRM_MODE_REFLECT_Y); drm_rect_rotate(&frame_info->rotated, drm_rect_width(&frame_info->rotated), drm_rect_height(&frame_info->rotated), frame_info->rotation); @@ -239,7 +240,9 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, drm_plane_create_rotation_property(&plane->base, DRM_MODE_ROTATE_0, DRM_MODE_ROTATE_0 | - DRM_MODE_REFLECT_X); + DRM_MODE_ROTATE_180 | + DRM_MODE_REFLECT_X | + DRM_MODE_REFLECT_Y); return plane; } -- 2.39.2