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output/cursor: fix scale and transform

Browse source 
Many issues here:

- wlr_output_cursor_set_buffer() takes a buffer already scaled for
  the output, not a buffer with scale=1.
- wlr_output_cursor.{width,height,hotspot_x,hotspot_y} are in output
  buffer coordinates.
- render_cursor_buffer() had hardcoded no-ops for scale and
  transform, instead of using the cursor surface's.

Fixes: b64e7e88bf ("output: add output_cursor_set_texture()")
This commit is contained in:
Simon Ser 2023-06-02 20:53:28 +02:00 committed by Alexander Orzechowski
parent 09c87cec3f
commit 52b93f7eb4
2 changed files with 23 additions and 13 deletions
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2
include/wlr/types/wlr_output.h
View file

@ -39,6 +39,8 @@ struct wlr_output_cursor {
bool enabled;
bool visible;
uint32_t width, height;
float scale;
enum wl_output_transform transform;
int32_t hotspot_x, hotspot_y;
struct wlr_texture *texture;
bool own_texture;

34
types/output/cursor.c
View file

@ -263,8 +263,6 @@ static bool output_pick_cursor_format(struct wlr_output *output,
static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor) {
struct wlr_output *output = cursor->output;
float scale = output->scale;
enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
struct wlr_texture *texture = cursor->texture;
if (texture == NULL) {
return NULL;
@ -274,8 +272,8 @@ static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor)
struct wlr_renderer *renderer = output->renderer;
assert(allocator != NULL && renderer != NULL);
int width = texture->width * output->scale / scale;
int height = texture->height * output->scale / scale;
int width = texture->width * output->scale / cursor->scale;
int height = texture->height * output->scale / cursor->scale;
if (output->impl->get_cursor_size) {
// Apply hardware limitations on buffer size
output->impl->get_cursor_size(cursor->output, &width, &height);
@ -313,8 +311,8 @@ static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor)
}
struct wlr_box dst_box = {
.width = texture->width * output->scale / scale,
.height = texture->height * output->scale / scale,
.width = texture->width * output->scale / cursor->scale,
.height = texture->height * output->scale / cursor->scale,
};
wlr_box_transform(&dst_box, &dst_box, wlr_output_transform_invert(output->transform),
@ -326,7 +324,7 @@ static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor)
return NULL;
}
transform = wlr_output_transform_invert(transform);
enum wl_output_transform transform = wlr_output_transform_invert(cursor->transform);
transform = wlr_output_transform_compose(transform, output->transform);
wlr_render_pass_add_rect(pass, &(struct wlr_render_rect_options){
@ -426,28 +424,38 @@ bool wlr_output_cursor_set_buffer(struct wlr_output_cursor *cursor,
}
}
return output_cursor_set_texture(cursor, texture, true, 1,
hotspot_x /= cursor->output->scale;
hotspot_y /= cursor->output->scale;
return output_cursor_set_texture(cursor, texture, true, cursor->output->scale,
WL_OUTPUT_TRANSFORM_NORMAL, hotspot_x, hotspot_y);
}
bool output_cursor_set_texture(struct wlr_output_cursor *cursor,
struct wlr_texture *texture, bool own_texture, float scale,
enum wl_output_transform transform, int32_t hotspot_x, int32_t hotspot_y) {
struct wlr_output *output = cursor->output;
output_cursor_reset(cursor);
cursor->enabled = texture != NULL;
if (texture != NULL) {
struct wlr_box box = { .width = texture->width, .height = texture->height };
struct wlr_box box = {
.width = texture->width / scale,
.height = texture->height / scale,
};
wlr_box_transform(&box, &box, wlr_output_transform_invert(transform), 0, 0);
cursor->width = (int)roundf(box.width * scale);
cursor->height = (int)roundf(box.height * scale);
cursor->width = (int)roundf(box.width * output->scale);
cursor->height = (int)roundf(box.height * output->scale);
cursor->scale = scale;
cursor->transform = transform;
} else {
cursor->width = 0;
cursor->height = 0;
}
cursor->hotspot_x = (int)roundf(hotspot_x * scale);
cursor->hotspot_y = (int)roundf(hotspot_y * scale);
cursor->hotspot_x = (int)roundf(hotspot_x * output->scale);
cursor->hotspot_y = (int)roundf(hotspot_y * output->scale);
output_cursor_update_visible(cursor);