Currently, vkms doesn't support any reflection property. Therefore, add the reflect-x property to vkms through a software implementation of the operation. This is possible by reverse reading the x axis during the blending.
Tested with igt@kms_rotation_crc@primary-reflect-x and igt@kms_rotation_crc@sprite-reflect-x [1]. [1] https://patchwork.freedesktop.org/series/116025/ Signed-off-by: Maíra Canal <[email protected]> --- drivers/gpu/drm/vkms/vkms_composer.c | 14 ++++++++++++-- drivers/gpu/drm/vkms/vkms_drv.h | 1 + drivers/gpu/drm/vkms/vkms_formats.c | 14 ++++++++++++-- drivers/gpu/drm/vkms/vkms_plane.c | 11 +++++++++++ 4 files changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index 80164e79af00..0f65c8c2e85e 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -11,6 +11,17 @@ #include "vkms_drv.h" +static struct pixel_argb_u16 *get_out_buffer(const struct vkms_frame_info *frame_info, + struct line_buffer *output_buffer) +{ + struct pixel_argb_u16 *out = output_buffer->pixels; + + if (frame_info->rotation & DRM_MODE_REFLECT_X) + return out - frame_info->dst.x1; + + return out + frame_info->dst.x1; +} + static u16 pre_mul_blend_channel(u16 src, u16 dst, u16 alpha) { u32 new_color; @@ -39,8 +50,7 @@ static void pre_mul_alpha_blend(struct vkms_frame_info *frame_info, struct line_buffer *stage_buffer, struct line_buffer *output_buffer) { - int x_dst = frame_info->dst.x1; - struct pixel_argb_u16 *out = output_buffer->pixels + x_dst; + struct pixel_argb_u16 *out = get_out_buffer(frame_info, output_buffer); struct pixel_argb_u16 *in = stage_buffer->pixels; int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), stage_buffer->n_pixels); diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index f152d54baf76..21627cdea025 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -27,6 +27,7 @@ struct vkms_frame_info { struct drm_framebuffer *fb; struct drm_rect src, dst; struct iosys_map map[DRM_FORMAT_MAX_PLANES]; + unsigned int rotation; unsigned int offset; unsigned int pitch; unsigned int cpp; diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c index bd542fd00698..42076df864ec 100644 --- a/drivers/gpu/drm/vkms/vkms_formats.c +++ b/drivers/gpu/drm/vkms/vkms_formats.c @@ -42,6 +42,13 @@ static void *get_packed_src_addr(const struct vkms_frame_info *frame_info, int y return packed_pixels_addr(frame_info, x_src, y_src); } +static int get_x_position(const struct vkms_frame_info *frame_info, int limit, int x) +{ + if (frame_info->rotation & DRM_MODE_REFLECT_X) + return limit - x - 1; + return x; +} + static void ARGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { /* @@ -109,8 +116,11 @@ void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state int limit = min_t(size_t, drm_rect_width(&plane->frame_info->dst), stage_buffer->n_pixels); - for (size_t x = 0; x < limit; x++, src_pixels += plane->frame_info->cpp) - plane->pixel_read(src_pixels, &out_pixels[x]); + for (size_t x = 0; x < limit; x++, src_pixels += plane->frame_info->cpp) { + int x_pos = get_x_position(plane->frame_info, limit, x); + + plane->pixel_read(src_pixels, &out_pixels[x_pos]); + } } /* diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 0a23875900ec..729ea7ce2ad3 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -4,6 +4,7 @@ #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> +#include <drm/drm_blend.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h> @@ -120,6 +121,12 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, frame_info->fb = fb; 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_rect_rotate(&frame_info->dst, drm_rect_width(&frame_info->dst), + drm_rect_height(&frame_info->dst), frame_info->rotation); + frame_info->offset = fb->offsets[0]; frame_info->pitch = fb->pitches[0]; frame_info->cpp = fb->format->cpp[0]; @@ -229,5 +236,9 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, drm_plane_helper_add(&plane->base, funcs); + drm_plane_create_rotation_property(&plane->base, DRM_MODE_ROTATE_0, + DRM_MODE_ROTATE_0 | + DRM_MODE_REFLECT_X); + return plane; } -- 2.39.2
