Currently, vkms doesn't support any rotation property. Therefore,
improve the vkms IGT test coverage by adding the rotate-0 and rotate-180
properties to vkms. The rotation was implemented by software: invert the
way the blending occurs by reverse reading the x and y axis.
Tested with 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 <mca...@igalia.com>
---
drivers/gpu/drm/vkms/vkms_composer.c | 39 ++++++++++++++++++++++++----
drivers/gpu/drm/vkms/vkms_drv.h | 1 +
drivers/gpu/drm/vkms/vkms_formats.c | 16 +++++++++---
drivers/gpu/drm/vkms/vkms_plane.c | 12 +++++++++
4 files changed, 60 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_composer.c
b/drivers/gpu/drm/vkms/vkms_composer.c
index 80164e79af00..914d85ac1654 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -11,6 +11,23 @@
#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;
+
+ switch (frame_info->rotation & DRM_MODE_ROTATE_MASK) {
+ case DRM_MODE_ROTATE_180:
+ out -= frame_info->dst.x1;
+ break;
+ default:
+ out += frame_info->dst.x1;
+ break;
+ }
+
+ return out;
+}
+
static u16 pre_mul_blend_channel(u16 src, u16 dst, u16 alpha)
{
u32 new_color;
@@ -39,8 +56,7 @@ 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);
@@ -53,6 +69,16 @@ 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)
+{
+ switch (frame_info->rotation & DRM_MODE_ROTATE_MASK) {
+ case DRM_MODE_ROTATE_180:
+ return drm_rect_height(&frame_info->dst) - y - 1;
+ default:
+ return y;
+ }
+}
+
static bool check_y_limit(struct vkms_frame_info *frame_info, int y)
{
if (y >= frame_info->dst.y1 && y < frame_info->dst.y2)
@@ -86,6 +112,7 @@ 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 +123,12 @@ 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 +136,7 @@ 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_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index d7ad813d7ae7..8344395d7745 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 02b0fc5a0839..7a98d4d75f17 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
x_limit, int x)
+{
+ if (frame_info->rotation & DRM_MODE_ROTATE_180)
+ return x_limit - x - 1;
+ return x;
+}
+
static void ARGB8888_to_argb_u16(u16 *src_pixels, struct pixel_argb_u16
*out_pixels, int x)
{
u8 *pixels = (u8 *)src_pixels;
@@ -107,7 +114,7 @@ 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);
int format = plane->frame_info->fb->format->format;
- int pixel_size;
+ int pixel_size, x_pos;
if (format == DRM_FORMAT_RGB565)
pixel_size = 1;
@@ -116,8 +123,11 @@ void vkms_compose_row(struct line_buffer *stage_buffer,
struct vkms_plane_state
else
pixel_size = 4;
- for (size_t x = 0; x < limit; x++, src_pixels += pixel_size)
- plane->pixel_read(src_pixels, out_pixels, x);
+ for (size_t x = 0; x < limit; x++, src_pixels += pixel_size) {
+ 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..f6a884b5872c 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 +121,13 @@ 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_ROTATE_180);
+
+ 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 +237,9 @@ 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_ROTATE_180);
+
return plane;
}
--
2.39.2
